Floods of April-June 1957 in Texas and Adjacent States

By I. D. YOST

FLOODS OF 1957

GEOLOGICAL SURVEY WATER-SUPPLY PAPER 1652-B

Prepared in cooperation with the States of Texas, Oklahoma, Louisiana, and Arkansas, and with other agencies

UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1963 UNITED STATES DEPARTMENT OF THE INTERIOR

STEWART L. UDALL, Secretary

GEOLOGICAL SURVEY

Thomas B. Nolan, Director

For sale by the Superintendent of Documents, U.S. Government Printing Office Washington 25, D.C. CONTENTS

Page Abstract______Bl Introduction.______-______-___-_-__------_---- 1 Acknowledgments ______-_-__-____--__------_---__-__------4 Definition of terms and abbreviations_-_____-_-_--___-----_------5 General features of the floods_--__-_-____--._------__---_------5 Precipitation..______5 Thefloods_-______- 10 Flood-control reservoirs-______---___------_---_------13 Determination of flood discharges______-___---___---- 13 Explanation of data______--_-______--____-_------15 Station data______16 Arkansas River basin______-____--__---_--_-_--_------16 Canadian River near Amarillo, Tex______-_-___.---_- 16 Red River basin______-__-_--_---__------18 Salt Fork Red River at Mangum, Okla_--__-_-_-__---_------18 North Fork Red River near Headrick, Okla______19 Cache Creek near Walters, Okla--_----___------19 Deep Red Run near Randlett, Okla______--__-_--- 20 Lake Kemp near Mabelle, Tex___---_------_----_-_------^ 21 Wichita River at Wichita Falls, Tex__.______22 Beaver Creek near Waurika, Okla--__-----_----_-__---_---_- 24 Lake Kickapoo near Archer City, Tex______24 Little Wichita River near Henrietta, Tex______25 Red River near Terral, Okla______---_--___------26 Red River near Gainesville, Tex______-___-___---__-__-_-_--_ 29 Washita River near Durwood, Okla_____----__-_--__-_------30 Lake Texoma near Denison, Tex______-_--_--_--- 32 Red River near Colbert, Okla____-__--_--__----_--_------33 Red River at Arthur City, Tex______34 Red River at Index, Ark______35 Red River at Fulton, Ark______36 Sulphur River near Talco, Tex______--_-__-----_-_------37 Texarkana Reservoir near Texarkana, Tex______38 Sulphur River below Texarkana Reservoir near Texarkana, Tex_ 39 Posten Bayou near Wardview, La-_-___-__-___---__--__----- 40 Cypress Creek near Jefferson, Tex______------40 Caddo Lake near Mooringsport, La______-__------41 Kelly Bayou near Hosston, La_____-___-___-_---_-_------_ 41 Black Bayou near Gilliam, La______--___---- 43 Twelvemile Bayou near Dixie, La--__---____---_-__------44 Paw Paw Bayou near Greenwood, La-______--_--_---_-___- 46 Red River at Shreveport, La______--____-_-___----_-_---- 48 Bayou Dorcheat near Minden, La______--_---__--_-- 48 Bayou Bodcau (head of Red Chute Bayou) near Sarepta, La 50 Hi IV CONTENTS

Station data Continued Page Red River basin Continued Bayou Bodcau Reservoir near Shreveport, La______B51 Cypress Bayou near Benton, La______-_-____----______52 Red Chute Bayou near Shreveport, La______54 Loggy Bayou near Ninock, La_____-_____-__----_____-___-__ 54 Saline Bayou near Clarence, La______----____--______55 Red River at Alexandria, La______-__-____------___-_-___- 56 Sabine River basin______-___-______---_--__-_-______56 Sabine River near Emory, Tex______-______56 Lake Fork Sabine River near Quitman, Tex______58 Sabine River near Gladewater, Tex______60 Sabine River at Logansport, La,--.------61 Sabine River below Toledo Bend near Burkeville, Tex______61 Sabine River near Ruliff, Tex______-______62 Neches River basin______-____-______-______63 Neches River near Neches, Tex______63 Neches River near Rockland, Tex ______63 Mud Creek near Jacksonville, Tex______64 Angelina River near Lufkin, Tex______65 Attoyac Bayou near Chireno, Tex______66 Angelina River near Zavalla, Tex_____-_-_____-_-_-__--_-____ 67 Dam B Reservoir at Town Bluff, Tex______68 Neches River at Evadale, Tex______69 Village Creek near Kountze, Tex______70 Trinity River basin.______70 North Creek near Jacksboro, Tex______70 West Fork Trinity River near Jacksboro, Tex______72 Bridgeport Reservoir above Bridgeport, Tex ______74 Big Sandy Creek near Bridgeport, Tex.______76 West Fork Trinity River near Boyd, Tex. ______78 Eagle Mountain Reservoir above Fort Worth, Tex_____----___- 80 Clear Fork Trinity River near Aledo, Tex______81 Benbrook Reservoir near Benbrook, Tex_-___------__--______82 Clear Fork Trinity River near Benbrook, Tex.______83 Clear Fork Trinity River at Fort Worth , Tex______86 West Fork Trinity River at Fort Worth, Tex______88 West Fork Trinity River at Grand Prairie, Tex______90 Elm Fork Trinity River near Sanger, Tex______91 Isle du Bois Creek near Pilot Point, Tex______-___-----____ 93 Clear Creek near Sanger, Tex______-_____-___-_----__---_- 95 Garza-Little Elm Reservoir near Lewisville, Tex______98 Elm Fork Trinity River near Lewisville, Tex______----___ 99 Denton Creek near Justin, Tex______100 Grapevine Reservoir near Grapevine, Tex______102 Denton Creek near Grapevine, Tex______--___-----__ 103 Elm Fork Trinity River near Carrollton, Tex______-----___ 105 Trinity River at Dallas, Tex_----_-_-_------_------_- 107 Sister Grove Creek near Princeton, Tex______-_-_-_-_--_-__ 109 Lavon Reservoir near Lavon, Tex______-__----_-_---__-__ 110 East Fork Trinity River near Lavon, Tex______111 East Fork Trinity River near Crandall, Tex______112 Trinity River near Rosser, Tex______--_-__---___- 114 CONTENTS V

Station data Continued Page Trinity River basin Continued Cedar Creek near Mabank, Tex______B115 Richland Creek near Richland, Tex-_----_------_-_-_-_- 117 Chambers Creek near Corsicana, Tex______118 Trinity River near Oakwood, Tex______120 Trinity River near Midway, Tex____-.______---_____-___- 120 Trinity River at Romayor, Tex______121 Trinity River at Liberty, Tex-__------_------_------__- 122 San Jacinto River basin______122 East Fork San Jacinto River near Cleveland, Tex______122 Lake Houston near Sheldon, Tex______123 Brazos River basin______124 Brazos River at Seymour, Tex______124 Fort Phantom Hill Reservoir near Nugent, Tex______126 Clear Fork Brazos River at Nugent, Tex______----_____-___- 127 Lake Stamford near Haskell, Tex______-__----_-__-___-_-_ 129 Clear Fork Brazos River at Fort Griffin, Tex______130 Hubbard Creek near Breckenridge, Tex______132 Brazos River near South Bend, Tex______135 Possum Kingdom Reservoir near Graford, Tex______137 Brazos River near Palo Pinto, Tex___-__-_--_-_-____-_-_-___- 138 Palo Pinto Creek near Santo, Tex______140 Rock Creek near Mineral Wells, Tex______142 Brazos River near Glen Rose, Tex______143 Paluxy Creek at Glen Rose, Tex______145 Nolands River at Blum, Tex_-_------_-----_------147 Whitney Reservoir near Whitney, Tex_ --_------_-----_---_- 148 Brazos River near Whitney, Tex______149 Aquilla Creek near Aquilla, Tex______151 North Bosque River near Clifton, Tex______154 Brazos River at Waco, Tex______-___---___--_-___--_____- 154 Leon River near Hasse, Tex______-__--_____---_-__-__--_-_ 157 Leon River at Gatesville, Tex______159 Belton Reservoir near Belton, Tex______161 Leon River near Belton, Tex_____--__---_--_-__-_-___-_-_-_- 162 Sulphur Creek above Lampasas, Tex_____--_------162 Burleson Creek near Lampasas, Tex______162 Sulphur Creek below Lampasas, Tex______-______:______163 Lampasas River at Youngsport, Tex______-____-_--__- 163 North Fork San Gabriel River near Georgetown, Tex______165 South Fork San Gabriel River near Leander, Tex______165 San Gabriel River at Georgetown, Tex______--_-__--___- 165 Little River at Cameron, Tex______167 Brazos River near Bryan, Tex_____---__-----_-----_------169 Yegua Creek near Somerville, Tex______171 Navasota River near Bryan, Tex______-_--__--- 172 Brazos River at Richmond, Tex______-__-_-______-__-- 173 Brazos River at Brazoria, Tex____------_------_------184 Colorado River basin______175 Lake J. B. Thomas near Vincent, Tex__--_-_------175 Colorado River at Colorado City, Tex______---_-_- 176 Lake Colorado. City near Colorado City, Tex_.______--_--- 178 VI CONTENTS

Station data Continued Page Colorado River basin Continued Colorado River near Silver, Tex___------_-____-_- B179 Oak Creek Reservoir near Blackwell, Tex______182 Colorado River at Ballinger, Tex______183 South Concho River at Christoval, Tex__-_--__-_-_-_-______185 Middle Concho River near Tankersly, Tex______187 Spring Creek near Tankersly, Tex______189 Lake Nasworthy near San Angelo, Tex______190 North Concho River near Carlsbad, Tex______-_-______-__- 191 San Angelo Reservoir at San Angelo Tex______193 Concho River near San Angelo, Tex______194 Concho River near Paint Rock, Tex______197 Colorado River at Winchell, Tex______-__---_--_____-__ 200 Hords Creek Reservoir near Valera, Tex______202 Hords Creek near Valera, Tex ______203. Brownwood Reservoir near Brownwood, Tex______204 Pecan Bayou at Brownwood, Tex______-____------____--__ 205 San Saba River at Menard, Tex______207 Brady Creek at Brady, Tex___------_------_------209 San Saba River at San Saba, Tex__.___-_____----_-_-__-___ 212 Colorado River near San Saba, Tex__-_------__--_- 212 Buchanan Reservoir near Burnet, Tex______214 Llano River near Junction, Tex______215 Llano River at Llano, Tex__------_------218 Pedernales River near Johnson City, Tex______-_____-____--_- 220 Lake Travis near Austin, Tex______A------221 Colorado River at Austin, Tex-_------_------222 Colorado River at Smithville, Tex__-__-_---___----_------224 Colorado River at Columbus, Tex______227 Colorado River near Bay City, Tex__-_------__------229 Lavaca River basin______--__---__----__---__---- 230 Lavaca River near Edna, Tex______230 Navidad River near Ganado, Tex______231 Guadalupe River basin______-_____-_------_ 232 Guadalupe River at Comfort, Tex______232 Guadalupe River near Spring Branch, Tex_____-______---_ 233 Guadalupe River above Comal River at New Braunfels, Tex____ 235 Comal River at New Braunfels, Tex______237 Blanco River at Wimberley, Tex______--___--- _____-__--__ 239 San Marcos River at Luling, Tex______---___------__ 240 Guadalupe River at Victoria, Tex______--___-_-_--_-_ 241 San Antonio River at San Antonio, Tex______243 Medina River near Pipecreek, Tex______-___------_ 245 Medina Lake near San Antonio, Tex______-_-_-_-__------247 Medina River near San Antonio, Tex______--__-_--__-_- 247 San Antonio River near Falls City, Tex.______-__-_--_--_- 249 Cibolo Creek at Selma, Tex___---___------251 Cibolo Creek near Falls City, Tex_.______-______- --_ 253 San Antonio River at Goliad, Tex______---___-^____------255 Nueces River basin______-__------257 Nueces River at Laguna, Tex___-____-_-----__------257 West Nueces River near Brackettville, Tex______--_--_- 258 CONTENTS VII

Station data Continued Page Nueces River basin Continued Nueces River near Asherton, Tex______B260 Nueces River near Tilden, Tex___--_-___-____-__-_--_---___- 261 Frio River at Concan, Tex__-__-____-_-_--_--__--____-__-- 263 Sabinal River near Sabinal, Tex______264 Hondo Creek near Hondo, Tex______--_--_--_-_-______- 266 Seco Creek near D'Hanis, Tex______267 Frio River near Derby, Tex____-___--_---__-__-_-______--- 269 Frio River at Calliham, Tex____-__-_-_-_---_____-__-_-_-_-_ 271 Atascosa River at Whitsett, Tex____-______273 Nueces River near Three Rivers, Tex______-____-_-______-_- 275 Lake Corpus Christi near Mathis, Tex______277 Nueces River near Mathis, Tex_____-______-______--_-- 278 Rio Grande basin______-___---______--__---___ 280 Pecos River near Girvin, Tex______280 Pecos River near Shumla, Tex______-___-_-_-______--- 281 Devils River near Del Rio, Tex___-__-_-_-_------_------281 Rio Grande at Laredo, Tex______.__-_------.-_------282 International Falcon Reservoir------283 Rio Grande at Chapeno, Tex______-___-____-_-____-_-- 284 Summary of flood stages and discharges______-___-----_-___-_-_- 284 Hydraulic and hydrologic analyses...------295 Flood-routing studies______-___-__--_---_-_-_----- 295 Brazos River basin______296 Colorado River basin.______-_____--__-___---_- 296 Flood-frequency studies-______-_-_--____---_--____--- 300 Brazos River basin______301 Colorado River basin. ______301 Rainfall-runoff studies______---__-_____---_-_------302 Sulphur River basin.______--_-_-_---_-___---_- 304 Sabine River basin______-______-_-___-__--_--____-_- 305 North Creek basin______.______-_-----._--_------_-- 306 West Fork Trinity River baain.__-__--_--__----_------307 Little Elm Creek basin____-_-______--_---_---_---_------_-- 308 Honey Creek basin______--_-_------_------309 Cow Bayou basin______-_-_-______-______-_--- 310 San Saba River basin______-__-_-__---_-----_--_--- 311 Waller Creek basin__._-.--.--_-.--- _ ------311 Guadalupe River basin______-______--_____,--___--_-_--- 312 Flood-crest elevations-______-____-______---_-_-_------315 Index.-__.__.______.______.-____.-._--_.-.---.--._.------. 317

ILLUSTRATIONS

Page FIGURE 1. Map showing area covered by this report-___---_--_--_--_- B2 2. View of San Gabriel River at Georgetown, Tex., near crest of flood, April 24, 1957, showing damage to Missouri-Kansas- Texas Railroad bridge-___-______.__,_-_._-_-_--__----- 3 3. View of floodwaters of the Trinity River spread over bottom­ lands near Crockett, Tex., April 25, 1957 ---- ______3 VIII CONTENTS

Page FIGURE 4. View of floodwaters of the Brazos River spread over bottom­ lands at Dennis, Tex., May 1, 1957__-----__-_------__- B4 5. Isohyetal map showing total precipitation during April 1957- _ 6 6. Aerial view of flood damage in residential area of Lampasas, Tex., flood of May 12, 1957------7 7. View of flood damage in residential area of Lampasas, Tex., flood of May 12, 1957___-----.------_.------8 8. Isohyetal map showing total precipitation during May 1957- _ 8 9. Isohyetal map showing total precipitation during June 1957__ 9 10. Isohyetal map showing total precipitation for the period April-June 1957___-_---.------9 11. Map showing location of flood-determination points in Texas west of the 98° meridian____---___--_--___-_____-_- 10 12. Map showing location of flood determination points in Texas and adjacent States east of the 98° meridian.-_--__-__-__ 11 13. Comparison of total runoff during flood period April-June 1957 with average yearly runoff for 7-year period 1950-56 at selected stream-gaging stations.____--_-__-___-____-__ 12 14. Comparison between hydrographs of measured and routed discharge of Brazos River near Whitney, Tex______297 15. Comparison between hydrographs of measured and routed dis­ charge of Brazos River at Waco, Tex____-____--__-_____ 298 16. Comparison between hydrographs of measured and routed discharge of Brazos River near Bryan, Tex______299 17. Comparison between hydrographs of measured and routed discharge of Colorado River at Austin, Tex______300 18. Map of Texas showing location of study areas for rainfall and runoff______303 19-26. Graphs showing rainfall and runoff, April-June 1957: 19. Sulphur River near Talco, Tex_____---__---___-_--- 304 20. Sabine River near Emory, Tex____-___-__-__---_-_- 305 21. North Creek near Jacksboro, Tex______306 22. West Fork Trinity River near Jacksboro, Tex______307 23. Little Elm Creek near Aubrey, Tex-__---____--_-_--_ 308 24. Honey Creek subwatershed No. 12 near McKinney, Tex___------______--__----_-__------__-- 309 25. Cow Bayou subwatershed No. 4 near Bruceville, Tex__ 310 26. San Saba River at Menard, Tex______-___-----_--_ 311 27. Graph showing rainfall and runoff, Waller Creek at 23rd Street, Austin, Tex., April-June 1957______312 28. Graph showing rainfall and runoff, Guadelupe River near Spring Branch, Tex., April-June 1957______313

TABLE

Page TABLE 1. Rainfall and runoff, in inches, for selected basins in Texas, April-June 1957 __-_------.------_. ------B313 FLOODS OF 1957

FLOODS OF APRIL-JUNE 1957 IN TEXAS AND ADJACENT STATES

By I. D. YOST

ABSTRACT The year 1957 in the Southwest was characterized by rainfall that produced a tremendous volume of flood runoff and brought an abrupt end to the severe drought, which had prevailed for several years. The floods of April-June 1957 in Texas and on tributaries to the Red River in Oklahoma and Louisiana were outstanding because of the large extent of the floods and the large volume of runoff produced. All streams in the area, from the Red River to the Rio Grande, were in flood much of the time during this 3-month period. Excluding the Red River and the Rio Grande and considering only the interior streams in Texas, 38 million acre-feet of runoff, adjusted for storage in major reservoirs, was produced over the State during this 3-month period. Peak discharges that exceeded previously known maximums occurred on only a few streams. An outstanding peak flow (45,100 cfs), the maximum since at least 1880, occurred on May 26 on Palo Pinto Creek, a tributary to the Brazos River near Santo, Tex. The stage of May 12 on Sulphur Creek at a site about 3 miles downstream from Lampasas, Tex., was only 1.5 feet lower than that of the flood of 1873. Maximum discharge of record occurred on the Salt Fork Red River and the Washita River, tributaries to the Red River in Oklahoma. This report has been prepared to furnish hydrologic data for detailed planning. Included are general descriptions of the floods, information concerning rainfall, and detailed streamflow records at selected gaging stations throughout areas in Arkansas, Oklahoma, Louisiana, and Texas from the Red River to the Rio Grande. INTRODUCTION During the period April to June 1957, heavy and frequent rain fell over the eastern two-thirds of Texas and over parts of Arkansas, Oklahoma, and Louisiana (fig. 1). Weather records do not show another 3-month period during which so much rainfall occurred over such a large part of the area. This heavy rainfall was a sudden change from the drought that had prevailed over practically all the Southwest from 1951 to March 1957. Bl B2 FLOODS OF 1957

Area covered by this report

FIGURE 1. Map showing area covered by this report.

During the past several years, rainfall and streamflow had been gradually decreasing, and the flow of many streams was the lowest on record, owing to a combination of the drought and increased ground- water withdrawals. Some of the larger springs in Texas had ceased to flow for the first time in the memory of the oldest residents. How­ ever, during these extremely dry years, some of the greatest floods known occurred notably those of September 1952 in the Colorado River basin, May 1953 in the Sabine and Neches River basins' in east Texas and southwestern Louisiana, and June 1954 in the Rio Grande basin. Some of the conditions produced by the drought served to modify the early floods. The soil was relatively dry and most of the major reservoirs were at all-time low stages. The rainfall in early April produced little runoff. Recurrent rainfall on the saturated soil filled most reservoirs and on only a few streams produced floods comparable in magnitude and extent to the greatest on record. For example, between March 1 and June 6, 1957, storage in Lake Texoma increased from its record low to its record high since storage began in 1942. Flooding on all streams during the prolonged period of time caused millions of dollars of damage (figs. 2-4) and some loss of life; several thousand families were evacuated, and thousands of homes were, damaged or destroyed; several hundred thousand acres of productive farmland were inundated for prolonged periods; and municipal and TEXAS AND ADJACENT STATES B3

FIGURE 2. View of San Gabriel River at Georgetown, Tex., near crest of flood, April 24, 1957, showing damage to Missouri-Kansas-Texas Railroad bridge. Photograph by United Press.

FIGURE 3. View of floodwaters of the Trinity River spread over bottomlands near Crockett, Tex., April 25, 1957. Photograph by U.S. Army Corps of Engineers. B4 FLOODS OF 1957

FIGURE 4. View of floodwators of the Brazos River spread over bottomlands at Dennis, Tex., May 1,1957. Photograph by U.S. Army Corps of Engineers. industrial damage was extensive. Most urban damages were caused by comparatively small streams. Many highways, highway bridges, and railroad bridges were damaged or destroyed. A few levees were overtopped or broken, and minor damage to several dams was reported though none was destroyed. This report contains general discussions of the storms and floods of April-June 1957 and detailed stream flow records of the flood- affected areas for the flood period. Sections on special hydraulic and hydrologic studies include flood-routing and flood-frequency studies for parts of the Brazos and the Colorado River basins in Texas, and rainfall-runoff studies on selected river basins in Texas.

ACKNOWLEDGMENTS The collection of basic records of stage and discharge in the area described in this report is a part of continuous cooperative programs of the U.S. Geological Survey with the States of Texas, Oklahoma, Louisiana, and Arkansas and with the U.S. Army Corps of Engineers, the U.S. Bureau of Reclamation, and the Soil Conservation Service- The U.S. Weather Bureau and several State, municipal, and private organizations supplied information included in this report, and acknowledgment of the data is made in the text at the proper place. TEXAS AND ADJACENT STATES B5

The data were collected and compiled in the district offices of the Surface Water Branch under the supervision of the following district engineers: Trigg Twichell, Texas; A. A. Fischback, Jr., Oklahoma; F. N. Hansen, Louisiana; and J. L. Saunders, Arkansas. The com­ pilation of data included in the report was coordinated by S. D. Breeding, Floods Section. DEFINITION OF TERMS AND ABBREVIATIONS The terms and abbreviations of streamflow and other hydrologic data, as used in this report, are defined as follows: Cubic foot per second (cfs) is the rate of discharge of a theoretical stream whose channel is 1 square foot in cross-sectional area and whose average velocity is 1 foot per second. The volume of water repre­ sented by a flow of 1 cubic foot per second for 24 hours is equivalent to 86,400 cubic feet, 1.983471 acre-feet, or 646,317 gallons. Acre-foot (acre-ft) is the quantity of water required to cover an acre to a depth of 1 foot and is equivalent to 43,560 cubic feet. An acre-foot is equivalent to 325,851 gallons. The term is usually used in relation to storage and volume of runoff. Runoff, in inches, is the depth to which an area would be covered if all the water draining from it in a given period of time was uni­ formly distributed on its surface. The term is used for comparing the amount of runoff with rainfall, which also is expressed in inches. Drainage area of a stream at a specified location is that area, measured in a horizontal plane, which is so enclosed by a topographic divide that direct surface runoff from rainfall normally would drain by gravity into the stream above the specified point. Drainage area is expressed in square miles (sq mi) in this report. Contents is the volume of water in a reservoir and is expressed in acre-feet. Volume is computed on the basis of a level pool and does not include bank storage. Stage-discharge relation is the relation between gage height and the rate of flow. GENERAL FEATURES OF THE FLOODS PRECIPITATION Rainfall during 1956 and January 1957 was considerably less than normal over much of Texas, Oklahoma, and Louisiana, and was near normal during February and March 1957. During the first half of April moderate to heavy rains occurred in Louisiana, south­ eastern Oklahoma, and most of the eastern half of Texas. Beginning in most places on April 18 and extending through the middle of June, turbulent weather with tornadoes, high winds, hail, and recurrent heavy rainfall occurred over practically all the Southwest; although at Beaumont, an area of normally heavy rainfall on the upper coast B6 FLOODS OF 1957 of Texas, the total rainfall for May was the lowest for any May since official records began. Monthly totals of rainfall for April ranged from less than 1 inch in extreme western Texas to more than 20 inches in northeastern Texas; Glenfawn in Rusk County recorded 20.48 inches. The heaviest rainfall occurred April 26. Several stations reported more than 7 inches on that date and Jacksboro recorded 9.60 inches. A map of the affected area (fig. 5) shows the pattern of heavy rainfall across the area during April.

FIGURE 5. Isohyetal map showing total precipitation, in inches, during April 1957.

The turbulent weather continued throughout May over much of the area. It was the wettest May of record at Del Rio, San Angelo, Abilene, Wichita Falls, Fort Worth, and Dallas, Tex. The greatest monthly total rainfall recorded was 19.32 inches at Brazos, Palo Pinto County, Tex., and many places throughout central Texas recorded more than 6 inches for the month. On May 12, rainfall ranged from 2 to 12 inches in the vicinity of Lampasas, Tex., producing the floods that caused extensive destruction in that city (figs. 6, 7). Heavy precipitation was widespread over Oklahoma, and as much as 20 inches was measured unofficially overnight on May 15-16 in a small area in the north-central part of the State. As much as 9 TEXAS AND ADJACENT STATES B7 inches of rainfall was measured on May 17-18 in the Washita River valley near Lindsay, Okla., an area tributary to the Red River. Figure 8 shows the pattern of rainfall that was recorded over the area during May.

FIGURE 6. Aerial view of flood damage in residential area of Lampasas, Tex., flood of May 12, 1957. Photograph by United Press.

The heavy rainfall continued through the first week in June; during the remainder of the month, rainfall was scattered, but heavy at times over parts of Texas. In general, the amount of rainfall in June ex­ ceeded the long-term average for June in most of central, eastern, and northeastern Texas. Alvin, in Brazoria County, Tex., recorded a total of 13.55 inches for the month. Figure 9 shows the distribution of total rainfall for June across the area. The total rainfall for the 3-month period over much of the eastern two-thirds of Texas was in excess of that normally recorded during a 12-month period. Figure 10 shows the distribution of the total rain­ fall recorded over the area covered by this report during the period April 1 to June 30, 1957. A comprehensive discussion and analysis of the meteorological con­ ditions that produced the heavy rainfall of April to June 1957, a compilation of hydrometeorological data, and a discussion of the use of radar in flood forecasting is contained in U.S. Weather Bureau Technical Paper No. 33, entitled, "Rainfall and Floods of April, May and June 1957 in the South-Central States". B8 FLOODS OF 1957

FIGURE 7. View of flood damage in residential area of Lampasas, Tex., flood of May 12,1957. Photograph by Texas Department of Public Safety.

101° 97° FIGURE 8. Isohyetal map showing total precipitation, in inches, during May 1957. Prepared from isohyetal map furnished by U.S. Weather Bureau. TEXAS AND ADJACENT STATES B9

FIGURE 9. Isohyetal map showing total precipitation, in inches, during June 1957. Prepared from isohyetal map furnished by U.S. Weather Bureau.

FIGURE 10. Isohyetal map showing total precipitation, in inches, during the period April-June 1957. Prepared from isohyetal map furnished by U.S. Weather Bureau. 656087 O 62 2 BIO FLOODS OF 1957

THE FLOODS A few small floods occurred in scattered localities in Texas early in April. Additional moderate flooding began April 19. Major and wide­ spread flooding began April 24 and continued for about 6 weeks. The floods affected all major streams in Texas east of the Pecos River from

104

FIGURE 11. Map showing location of flood-determination points in Texas west of the 98° meridian. (See fig. 12 for explanation.) TEXAS AND ADJACENT STATES Bll the Red River to the Rio Grande (fig. 11). The floods were notable for their duration and large volume of runoff rather than for high rates of discharge. The maximums of 1957 were the greatest of record at only a few gaging stations, and exceeded historical maximum stages on only a few small streams.

A R K AXN|S A' S Little Roct

Stream-gaging station which sys­ tematic records at stages and dis­ charges are available 0 112 Point at which only determination of maximum discharge is available

FIGURE 12. Map showing location of flood-determination points in Texas and adjacent States east of the 98° meridian. (See fig. 11 for scale.) B12 FLOODS OF 1957

RUNOFF, IN MILLIONS OF ACRE-FEET _2 34567

Red River near Terral, Okla.; drainage area, 28,723 sq mi

Sabine River near Gladewater, Tex.; drainage area, 2846 sq mi

Neches River near Rockland, Tex.; drainage area, 3539 sq mi

Trinity River near Oakwood, Tex.; drainage area, 12,912 sq mi

Brazos River near Bryan, Tex.; drainage area, 38,430 sq mi

Colorado River near San Saba, Tex.; drainage area, 30,600 sq mi

Guadalupe River at Victoria, Tex.; drainage area, 5161 sq mi

Nueces River near Three Rivers, Tex.; drainage area, 15,600 sq mi

Rio Grande at Laredo, Tex.; drainage area, 135,976 sq mi

EXPLANATION

Total runoff, in acre-feet, during flood period April-June 1957. (Not adjusted for storage)

Average yearly runoff, in acre-feet, for 7- year period 1950-56. (Not adjusted for storage)

FIGURE 13. Comparison of total runoff, in acre-feet, during the flood period, April-June 1957, with average yearly runoff, in acre-feet, for 7-year period, 1950-56, at selected stream-gaging stations.

The runoff for May on the Washita River near Durwood, Okla., was well over a million acre-feet, almost double the highest runoff for any previous May in the 30-year record; runoff in April was the second highest flow of record for the month; and that in June was the third highest flow of record for the month. Runoff during May 1957 was the maximum of record for May in the lower reaches of Salt Fork Red North Fork Red, Washita, Blue, and Muddy Boggy River basins. TEXAS AND ADJACENT STATES B13

No flood of any consequence originated within Louisiana. Moderate rises occurred in April along the Red River. More severe rises occurred in May when backwater areas along the Red River were inundated as floodwaters from Texas and Oklahoma moved downstream toward the Gulf of Mexico. The Red River remained above flood stage through most of June, and the peak for that month was nearly as high as the peak for May. Runoff for most of the streams east of the Pecos River in Texas during the period April to June 1957 was large in comparison with any other 3-month period of record. Total runoff for the 3-month period hi 1957 hi each of the nine major river basins in Texas (fig. 13), was considerably greater than the average yearly runoff for the 7-year period, 1950-56. Generally, 1950-56 is considered a period of severe drought in Texas. However, there were large or record-breaking floods in some parts of Texas during each of those 7 years, the most outstanding being the great floods in central Texas in 1952, in eastern Texas (and southwestern Louisiana) in 1953, and in the Rio Grande basin in 1954. FLOOD-CONTROL RESERVOIRS The flood flows in 1957 in the lower reaches of the Red, Trinity, Brazos, and Colorado Rivers and the Rio Grande were materially af­ fected by storage in reservoirs. The capacity of 11 of the many major reservoirs in those basins in Texas is 19 million acre-feet, of which 11 million acre-feet is allocated for flood-control storage. These reser­ voirs had a total storage of 4 million acre-feet on April 1, 1957, and 11 million acre-feet on June 30, 1957. Therefore, these 11 reservoirs were holding a total of 7 million acre-feet more on June 30 than they were on April 1. On June 30, water was still being discharged from the flood-control pools in 9 of the reservoirs. The flood-control pools filled hi 6 of the reservoirs during the flood period and caused uncon­ trolled spill. The flood-control pools in 3 other reservoirs would have filled if releases had not been made during the flood period. During the period many reservoirs, in addition to the 11 discussed above, caught and held flood water. This additional storage reduced the flow of many streams significantly.

DETERMINATION OF FLOOD DISCHARGES The purpose of this report is to show the extent and the magnitude of the floods that occurred during the period April to June 1957. Detailed records of streamflow and reservoir content for selected stations in each of the major river basins are presented. Much of these data have not been published by the U.S. Geological Survey in the annual series of Water-Supply Papers on surface-water supply. B14 FLOODS OF 1957

Data are presented in sufficient detail to be used in studies relative to flood-control measures and watershed development. In order to determine the amount of flow and verify the constantly changing flow conditions in a stream channel, basic streamflow data must be systematically collected throughout the range of flow experi­ enced at each stream-gaging station. The systematic collection of basic data at a stream-gaging station includes a record of stage, measurements of discharge, and other general information pertinent to the determination of the daily flow of the stream at the gaging station. The record of stage is obtained either from periodic readings of some type of nonrecording gage or from an automatic water-stage recorder installation that provides a continuous graphic record of stage. Measurements of flow are generally made by use of a current meter. The operation of a stream-gaging station consists primarily of the determination of stage and measurement of discharge for the definition of the stage-discharge relation in order that discharge may be calcu­ lated for any known stage. The general method used to determine discharge involves computation of a stage-discharge relation curve from current-meter measurements of discharge at stages varying from low to high water and application of the values from this curve to the records of stage. Short extensions of the stage-discharge relation curve may be made by logarithmic plotting, from velocity-area studies, or by use of other measureable hydraulic factors. Many stream channels within the area covered by this report are sandy or silty and are subject to scour and fill especially during periods of sustained flood flow, thus the relation between stage and discharge is continually changing and frequent current-meter measurements are necessary in order that discharge may be reliably defined. During major floods it is often impossible to obtain current-meter measurements because of impassable roads, insufficient flood warning on streams of rapidly changing stage, heavy floating debris, or destruc­ tion of structures from which flood measurements are made. After critical floods, such as those in 1957, the need arises for special peak- flow information on certain streams where stream-gaging stations were inaccessible during the flood or where streamflow data are not avail­ able. Where current-meter measurements were not made, it was necessary to determine the peak flow by indirect methods, such as computation of flow over roadways or through contracted openings, by slope-area method, or by a combination of several methods. A general description oi:, these methods can be found in U.S. Geological Survey Water-Supply Paper 888. TEXAS AND ADJACENT STATES B15

EXPLANATION OF DATA The data in this report consist of records of stage and discharge at gaging stations, and of records of peak stage and peak discharge for many miscellaneous sites in or on the fringe of the area of intense flooding. The stations are numbered and arranged in downstream order from headwater to mouth, with stations on tributaries inserted in the order in which the tributary enters the main stream. The locations of gaging stations and sites of peak flow measurements are shown by number on figures 11 and 12. In general, the information given for each gaging station is: a description of the station, a tabulation of daily mean dischargss for April-June 1957, a tabulation of stages and discharges at selected intervals during days of rise and recession of the flood. For miscel­ laneous sites, only the station description is presented. The description of the gaging station gives information relative to location, datum, type of gage, and drainage area. In addition, the method used to determine the stage during the flood is described, and information is given relative to definition of the stage-discharge relation throughout the ranges of stage experienced during the 1957 floods and the previously recorded maximum flood. The maximum stage and maximum discharge at each gaging station is given for the period covered by the report and for the period during which con­ tinuous records of discharge were obtained. Information regarding floods outside the period of record also is given if available. Remarks on cooperation, regulation, and diversion, together with other perti­ nent information are included where applicable. Tables of daily discharges are presented for the flood period, April to June. The tables also give the monthly mean discharge and the volume of runoff, in acre-feet, and for some stations runoff is given also in inches. In general, runoff, in inches, is computed only for stations in areas where the average annual rainfall exceeds 20 inches, and for these only if the flow is not regulated. For stations at reser­ voirs the tables show elevation or gage height, in feet; contents, in acre-feet, at an indicated time each day; and a summary of change in contents during each month. The tables of stages and discharges at indicated times provide information sufficiently detailed to enable accurate plotting of the discharge hydrograph. The tables generally cover the period during which discharge was changing rapidly, whereas the tables of daily mean discharges furnish sufficient information for days of slowly changing discharge. Central standard time is given throughout. At many stations, stages were obtained from records of a continuous water-stage recorder. For periods when a water-stage recorder was B16 FLOODS OF 1957 not functioning properly, the interrupted stage graph was completed on the basis of a floodmark or supplemental gage readings when avail­ able. For stations at which the records of stage consisted of one or more gage readings each day, a stage graph was drawn on the basis of these readings and any floodmarks available. At either type station, for periods when no data on stage were available, the record of discharge was completed by comparison with records of other stations on the same stream or on nearby streams. Details of the methods used to define the record of stage are given under the "Gage-height record" for each station. For other available data on the records of streamflow and reservoir content of stations included in this report, and also for the records for the many other stations in the area, reference is made to the annual series of Water-Supply Papers, part 7, Lower Mississippi River basin, and part 8, Western Gulf of Mexico basins.

STATION DATA ARKANSAS RIVER BASIN

1. CANADIAN RIVER NEAR AMARILLO, TEX. Location. Lat 35°28'10", long 101°52'45", near left bank on downstream side of bridge on U.S. Highways 87 and 287, 2,000 ft downstream from Pitcher Creek, 2.0 miles downstream from Panhandle and Santa Fe Railway bridge, 19 miles north of Amarillo, Potter County, and at mile 537.7. Drainage area. 19,445 sq mi, of which 4,069 sq mi is probably noncontributing. Gage-height record. Water-stage recorder graph except Apr. 1 21, June 14-18, 28-30, when once-daily, wire-weight gage readings were used. Datum of gage is 2,989.16 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation denned by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 66,900 cfs 5 p.m. May 24, (gage height, 12.82 ft). 1924-25, 1938 to March 1957: Discharge, 135,000 cfs July 25, 1941 (gage height, 15.7 ft), from rating curve extended above 100,000 cfs. Flood of May 1914 reached a stage of about 24.0 ft; a higher stage probably occurred during the flood of October 1904. Remarks. Some regulation by Conchas Reservoir (capacity, 370,200 acre-ft) in New Mexico. Extremely low flow is maintained by sewage effluent from the city of Amarillo. No large diversions above station. TEXAS AND ADJACENT STATES BIT

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

I..... __ 10 103 4,240 11. . 7.4 115 44 21 14 105 11 2 11 177 4,740 12 .. 5.2 209 33 22 14 64 12 3 . 10 179 3,610 13 4.0 178 31 23 16 45 978 4 11 115 2,290 14 5.8 338 29 24.. 14 12,500 792 5 ___ 14 85 1,390 15... .. 6.6 278 27 25 . 14 1,820 146 6.- -. 16 53 681 16 .. 6.6 1,620 21 26 15 236 92 7 - 11 29 259 17 14 648 21 27 ~ 469 408 48 8.2 11 102 18 14 120 20 28 - 2,460 463 35 9_ . 8.2 7.4 76 19 11 85 16 29 260 1,240 26 10 8.2 6.9 53 20 12 36 12 30 175 765 20 31 . 1,150

Monthly mean discharge, in cubic feet per s 122 751 662 Runoff, in acre-feet ______------__ 7.230 46. 190 39.390

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April m May 17 May 86 3.81 35 12m.. ___ 4.35 602 12m.__ 2.42 211 3.87 170 10p.m...... 2.36 138 April #7 12 2.53 12m... 4.02 94 May 18 May 31 4.07 99 d 75 447 12m.. 3.77 109 3 C7 2,740 10 5 60 1 fi<\fl 12p.m...... 3.74 94 11 ..... 5.28 1,130 12 7.45 10,000 3.48 2,480 April %8 4 _____ . .... 4.11 4,230 . ou 6...... 3.88 3,450 i TO 3,120 7 ...... 6.42 13, 300 12m__ ... . 4. 53 1,070 8 5.47 7,900 4.00 460 10 4.82 6,060 12 . 3.90 395 QO 12m... . 4.37 4,300 3 on 6 p.m...... 3.57 1,960 April 29 12m___ ... 4.67 1,180 8 _ ...... 4.32 4,120 S on 2 QOf\ 12 . 4.09 3,310 12m.. 3.67 237 2 6.400 12 p.m...... 3.55 170 3...... 8 nQ June 2 4 10.85 44,400 May 15 5_...... 10 QO 66 900 5 a.m...... 4.52 4,880 7 ...... 9 32 31,500 10 _____ .. 4.12 3,420 12p.m...... 3.85 360 g 8 H7 21 900 12m__. __ .. 4.92 6,490 1 1 500 6 p.m...... 4.52 4,880 May 16 12 S enn 12 4.45 4,610 3.77 5 ... _ 3,450 May Z5 9_ ...... 4.19 572 12 m...... 4.15 3,520 10 ...... 4.98 1,720 4.22 4,490 12p.m___ .... 3.90 2,800 4.73 1,260 4 ... - 2,900 5.58 3,280 8 ...... 3.17 1,800 4.90 1,420 12m. . 1,200 7 ...... 5.20 2,100 2.69 680 12m...... 3.72 2,240 12 4.77 1,220 12 2.53 360 12 p.m...... 3.52 1,880 B18 FLOODS OF 1957

BED RIVER BASIN 2. SALT FORK RED RIVER AT MANGTHVC, OKLA. Location. Lat 34°52', long 99°31', in SW^SEtf sec. 34, T. 5 N., R. 22 W., near left bank on downstream side of pier of bridge on State Highway 34, half a mile south of Mangum, 13 miles downstream from Fish Creek, and at mile 35.5. Drainage area. 1,566 sq mi, of which 209 sq mi is probably noncontributing. Gage-height record. Water-stage recorder graph except May 19-24, 27, 30, 31, June 8-11, for which graph was drawn on basis of wire-weight gage readings made once daily. Datum of gage is 1,490.87 ft above mean sea level, datum of 1929 (levels by U.S. Bureau of Reclamation). Discharge record. Stage-discharge relation defined by current-meter measure­ ments below 50,000 cfs. Maxima. April-June 1957: Discharge, 72,000 cfs 10:30 a.m. May 16 (gage height, 14.55 ft). 1905-6, 1937 to March 1957: Discharge, 60,000 cfs June 16, 1938 (gage height, 14.7 ft). Maximum discharge known, that of May 16, 1957; maximum gage height, that of June 16, 1938.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1. ------23 586 1,230 11 8.5 1,800 100 21 - 372 360 47 2 - 37 940 760 12. 5.3 1,600 88 22 578 330 42 3 140 951 650 1 ^ 4.4 781 88 23 ~ 1,810 280 40 4 ... . 37 2,140 972 14. 3.9 558 71 24 . 495 230 39 5 67 518 735 15 4.7 470 74 25 209 3.560 37 6 - 39 368 720 16 5.3 14, 800 66 26 719 1,030 39 7 - 21 315 430 IT- 4.4 2,740 60 186 470 43 8 14 741 236 IS. . 3.3 2,280 62 952 2,920 390 34 9 . 9.3 2,080 164 19 6.4 825 59 29 3,190 400 26 10 6.4 270 125 20 1,240 490 56 30- 1,480 230 19 01 514

Monthly mean discharge, in cubic feet per 455 1,389 237 Runoff, in acre-feet-.. ______- . ... 27,050 85, 380 14, 110

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May 15 May 16-cont. May /7-cont. 6.55 430 10.25 6.75 1,660 5...... 9.25 12,400 8 6.77 1,700 May 16 6...... 8.65 8,700 10 7.55 3,900 7... ___ ... 8.52 8,100 12 - 7.76 4,800 1 a.m...... 6.55 430 8...... 8.58 8,400 4...... 6.53 416 10 - . o Oft May 18 8...... 6.52 19 7 90 5, 300 9...... 11.20 17 son 7.76 4,800 10...... 14.10 fit) &nn May 17 4 7.48 3,650 10:30...... 14.55 72,000 6 7.28 2,800 11 ...... 13.85 7.67 4,400 12m 6.87 1,800 12m__ _ 12.05 41, 400 4 3,600 6.65 1,250 11.45 34,000 6 7 Oft 2,800 12 - 6.47 1,100 2 ...... 11.05 29 200 10 6 no 2,100 3...... 10.74 26,000 6.78 1,700 TEXAS AND ADJACENT STATES B19

3. NORTH FORK RED RIVER NEAR HEADRICK, OKLA. Location. Lat 34°38', long 99°06', in center of W/2 sec. 21, T. 2 N., R. 18 W., near right bank on downstream side of pier of bridge on U.S. Highway 62, 2}£ miles east of Headrick, 12.9 miles upstream from Otter Creek, and at mile 33.0. Drainage area. 4,244 sq mi, of which 399 sq mi is probably noncontributing. Gage-height record. Water-stage recorder graph except Apr. 6-19, 29, 30, May 7, 8, 29, 30, June 7-17, 20, 23-30. Graphs were drawn on basis of once- daily wire-weight gage readings for all periods except Apr. 6-8. Datum of gage is 1,299.83 ft above mean sea level, datum of 1929 (U.S. Bureau of Recla­ mation bench mark). Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 20,100 cfs 10:45 p.m. May 4 (gage height, 9.36ft). 1905-8, 1937 to March 1957: Discharge, 30,700 cfs Oct. 5, 1955 (gage height, 11.50ft). Maximum stage known, 16.1 ft sometime before 1927, from information by State Highway Department. Remarks. Flow partly regulated by Lake Altus (capacity, 142,900 acre-ft) 39.5 miles above station, where there was no spill other than 2,510 acre-ft distributed through period June 4-29 (maximum discharge, 131 cfs June 18).

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

!___..__ 28 990 642 37 6,520 372 21 5,940 1,500 652 2.______21 2,510 1,100 12 - 37 13,200 372 22 3,190 734 320 3 1,020 4,700 3,120 13 32 9,370 411 23 11, 800 1,560 173 4_____- 1,520 12,200 3,060 14 27 4,400 342 24 9,600 730 162 5 108 16,000 2,110 15 23 1,530 365 25 3,750 1,850 151 6 _ 60 8,070 1,780 16 22 827 403 26 1,070 5,750 140 7 __- 50 984 1,000 17 22 1,360 284 27 1,110 1,800 127 8 48 695 752 18 22 8,780 2,730 28 1,040 816 124 9_-__.__ 44 3,550 545 19 22 9,600 2, 110 29 764 489 115 10- _- 38 10,800 427 20 146 3,370 1,140 30- 704 419 115 01 843

Monthly mean discharge, in cubic feet per s 1,410 4,368 838 Runoff, in acre-feet ______... - . 83.900 268, 600 49, 870

4. CACHE CREEK NEAR WALTERS, OKLA. Location. Lat 34°20', long 98°17', in SE# sec. 19, T. 2 S., R. 10 W., near center of span on downstream side of pier of bridge on State Highway 53, 1% miles east of Walters, 12.2 miles upstream from West Cache Creek, and at mile 19.7. Drainage area. 675 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 938.2 ft above mean sea level (Oklahoma State Highway Commission bench mark). Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 15,000 cfs 6 a.m. May 26 (gage height, 28.80ft). 1938 to March 1957: Discharge, 28,200 cfs May 18, 1951 (gage height, 29.72ft). B20 FLOODS OF 1957

Maximum stage known, that of May 18, 1951. Flood of 1906 reached a stage about the same as those of May 18, 1951, and May 17, 1947 (gage height, 29.62 ft); information from local residents. Remarks. Flow partly regulated by Lake Lawtonka (capacity, 63,000 acre-ft) on Medicine Creek and by Lake Thomas (capacity, 8,300 acre-ft) on Little Medicine Creek.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1. - ... 34 1,400 3,440 11 36 895 326 21 2,130 539 262 2 47 1,440 1,280 33 554 304 22 3,150 710 200 3 44 4,020 1,140 13 30 1,140 293 23 2, 3SO 1,900 180 4 58 7,950 2,820 14 30 1,210 326 24 3,260 852 164 5 501 8,000 3, 490 IS 28 570 304 25 1,620 2,360 153 6 122 4,000 2,310 16 26 252 216 26 2,590 13,200 146 7 -- 70 807 1,030 17 -. 26 280 200 27- 1,690 6,220 136 8. ----- 58 446 683 t 0 27 2,660 684 9R 375 1,340 132 9 47 1,500 496 to 27 4,760 1,600 29 904 641 120 10 41 2,240 397 57 2,960 723 30 1,380 522 114 31 1,590

Monthly mean d ischarsje, in cubic feet per s 694 2,480 789 Runoff, in acre-fe et 41,300 152, 600 46,950

5. DEEP RED RUN NEAR RANDLETT, OE3LA. Location. Lat 34°13', long 98°27', in SV?% sec. 10, T. 4 S., R. 12 W., near right bank on downstream side of pier of bridge on U.S. Highway 277, 2% miles north of Randlett and 4.8 miles upstream from mouth. Drainage area. 617 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 924.49 ft above mean sea level, datum of 1929 (Oklahoma State Highway Commission bench mark). Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April- June 1957: Discharge, 8,050 cfs 1:45 a.m. May 20 (gage height 23.74ft). 1949 to March 1957: Discharge, 20,300 cfs May 18, 1951 (gage height, 27.10 ft), from rating curve extended above 13,000 cfs. Maximum stage known, 1908; somewhat exceeded 27 ft; information from local residents.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1- 1.6 3,470 1,670 11.--. 0.7 2,430 73 21- 1,490 1,990 719 2. _ ... 1.4 2,950 3,050 12 .7 1,360 71 99 1,500 334 91 3...... 1.3 2,780 1,310 13_. .7 960 78 23 2,740 1,810 56 4...... 1.1 6,630 1,320 14- . .6 1,310 103 24 __ 2,270 3,010 40 5 _ 1.0 5,670 1,360 15--.. .6 1,330 88 25 1,620 2,550 30 6 1.4 5,650 980 16 .7 239 54 26. . 3,070 4,020 26 7 .. 1.2 3,300 368 17 .6 244 40 27 2,570 3,760 22 8 .8 574 174 18 .6 2,260 91 28 2,400 720 19 9 .... .7 807 117 19- .6 4,040 1,120 29 2,950 145 17 10 ...... 6 1,460 91 20 166 6,300 2,190 30 3,170 120 15 446

Monthly mean ( ischarge, in cubic feet per 799 2,344 513 Runoff, in acre-fset 47,530 144, 100 30, 510 TEXAS AND ADJACENT STATES B21

6. LAKE KEMP NEAR MABELLE, TEX. Location. Lat 33°45', long 99°09', in outlet-gate control house at dam on Wichita River, 6.2 miles north of Mabelle, Baylor County, and 10.2 miles northeast of Seymour. Drainage area. 2,099 sq mi. Gage-height record. Float-type gage read daily at 8 a.m. Datum of gage is 2.4 ft above mean sea level datum of 1929, Fort Worth supplementary ad­ justment of 1942. Maxima. April-June 1957: Contents, 390,900 acre-ft 8 a.m. May 21 (gage height, 1,147.8ft). 1922 to March 1957: Contents, 420,900 acre-ft June 30, 1941 (gage height, 1,149.6ft). Remarks. Lake is formed by hydraulic-earth-fill dam, 7,500 ft long, having an uncontrolled semicircular concrete service spillway 564 ft long with crest at gage height 1,150.6 ft (capacity, 438,000 acre-ft). Two uncontrolled emer­ gency spillways are located between the left end of dam and the service spill­ way, one 70 ft long with crest at gage height 1,159.1 ft, and the other 335 ft long with crest ranging from gage height 1,159.6 to 1,162.9 ft. Storage began Oct. 1, 1922; dam completed Aug. 25, 1923. Outlet works consist of six con­ duits, 7 ft in diameter, controlled by lift-type gates. Records of daily gage heights furnished by Wichita County Water Improvement Districts Nos. 1 and 2. Capacity table furnished by U.S. Army Corps of Engineers and based on their survey in 1944. Two outlet gates were opened May 19 and closed June 12. Average daily discharge through the gates, about 3,300 cfs. Gage height, in feet, and contents, in acre-feet, at 8 a.m. of indicated day, 1957

Al ril May June Day Gage height Contents Gage height Contents Gage height Contents

1. ____ . 1, 130. 8 1, 138. 7 254, 300 1, 145. 7 356, 400 2...... 1 13ft 8 164 900 1 13Q Q 9fiQ Qftft 1 1 AK. K 353, 200 3 _.._...... 1 13ft 8 164 900 1, 140. 2 973 Qftft 1 14^ 4 351,600 4...... 1 13ft 8 164 900 1, 140. 6 1, 145. 4 351,600 5. . .. 1 13ft Q 165^ 800 1, 141. 2 1, 145. 6 354, 800 6...... 1 13ft Q 165,800 OQft 5ftft 1, 145. 7 356, 400 7 . __ 1 13ft Q 165, 800 1,141.4 1, 145. 6 354,800 8...... 1, 130. 9 165, 800 290, 300 1, 145. 4 351, 600 9...... 1 130 Q 165, 800 1, 141. 7 9Q4 P^nft 1, 145. 0 345, 200 lO...... 1 130 Q 165,800 1, 142. 0 298 700 340, 400 11...... 1, 130. 9 165,800 1, 142. 4 304,700 1, 144. 4 335, 600 12...... 1 13ft 8 164 900 1 t 149 Q 319 90ft 330, 800 13...... 1 13ft 8 164 900 1, 143. 7 330,800 14.... _ . 1 13ft 8 164 900 1 144 2 1, 144. 2 332, 400 15...... i 15ft 8 337, 200 1, 144. 2 332, 400

16...... 1 13ft ft -lOA QAA 1, 144. 5 1, 144. 2 332, 400 17...... 1 13ft 8 164 900 QQQ Qflfl 1, 144. 3 334, 000 18...... 1 13ft 8 164 900 1, 145. 5 337, 200 335, 600 19 . _ .. . 164, 900 1, 144. 4 335, 600 20...... 384, 300 1, 144. 8 342, 000

21.... _ .. . 1 13ft 8 164,900 1, 147. 8 1, 144. 9 343, 600 22...... 1, 131. 6 172, 400 1, 147. 6 387, 600 1, 144. 9 343,600 23...... - 1. 132. 6 182, 200 1, 147. 4 384, 300 1, 145. 0 345, 200 24.... 1 133 1 187, 30(V 1, 147. 7 38Q 9ftft 1, 145. 0 345, 200 25... _ - 1 133 f» m 7ftft 1, 147. 7 1, 145. 0 345, 200 26..... _...... 1 133 Q 196, 100 1, 147. 4 1, 145. 0 345, 200 27...... 381, 000 1, 145. 0 345, 200 28...... 1, 134. 4 201,800 1, 146. 9 376, 000 1, 145. 0 345, 200 29...... 1 13^ 9 211 100 1, 146. 6 1, 145. 0 345. 200 30...... 1, 136. 8 230, 300 1,146.3 366, 200 1, 144. 9 343,600 31 ____ . 361, 200 +65, 400 +130,900 -17,600 B22 FLOODS OF 1957

7. WICHTTA RIVER AT WICHITA FALLS, TEX. Location. Lat 33°54'30", long 98°32'05", near center of stream on downstream side ef Beverly Drive Bridge in Wichita Falls, Wichita County, 4 miles upstream from Fort Worth and Denver City Railway bridge and 8.4 miles upstream from from Holliday Creek. Drainage area. 3,140 sq mi, of which 2,099 sq mi is above Lake Kemp Dam. Gage-height record. From graph based on readings of wire-weight gage made at least twice daily. Datum of gage is 924.26 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 7,200 cfs 6-12 p.m. May 3; gage height, 18.60 ft 12 p.m. May 19 to 3 a.m. May 20. 1938 to March 1957: Discharge observed, 17,800 cfs Oct. 3, 1941 (gage height, 24.00ft). Maximum discharge known, 50,000 cfs on June 8, 1915; computed by Big Wichita River Irrigation Co. Remarks. Runoff from 2,099 sq mi was controlled by Lake Kemp (capacity, 438,000 acre-ft) 71 miles upstream. Two outlet gates in Lake Kemp Dam were opened May 19 and closed June 12. Average daily discharge through the gates, about 3,300 cfs.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1. ... 29 2,820 4,170 11 27 1,220 3.060 21- 1,320 5,700 345 2 30 3,370 5,900 12 29 1,550 3,070 22 712 3,960 255 3 30 6,789 6,650 13 27 2,260 3,320 23 835 3,770 199 4. __ .- 32 6,990 5,700 14 30 1,200 3,3fiO 24 642 4,270 177 5 32 5,900 4,830 15 30 847 1,640 25 267 4,450 187 6 30 4,570 4,490 16- 32 645 794 26 - 1,500 4,210 144 7. 32 2,550 4,350 17 - 31 647 471 27- 799 4,210 135 8 30 1,280 3,850 18 30 4.390 390 28- 992 4,210 139 9. 37 1,260 3,550 19 35 6,700 972 29 2,900 4,080 125 10 27 2,000 3,150 20 119 6,960 555 30 3,380 4,090 121 31. . 4,370

Monthly mean d ischarge, in cubic feet per s 468 3,589 2,203 Runoff, in acre-feet 27,840 220,700 131, 100 TEXAS AND ADJACENT STATES B23

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 27 May 4 May 20 A. 18 414 18.39 6,980 18.60 7,190 7,040 18.30 7,000 April H8 18.25 6,960 17.70 6,600 17.80 6,670 3,75 288 May ti 12m.---- __ 4.00 360 700 12m.. 16.31 5,770 3 7.20 1,460 12 p.m... . 14.35 4,650 6...... 8.15 1,820 16.50 j OOU 12 15.30 5,160 May 2% 12m... . 12.70 3,790 12p.m.- 12.35 3,610 in on 2,940 14.25 4,590 11.65 3,280 13.00 3,940 May 31 "12 12.00 3,440 13.28 4,100 April SO May 7 June 1 6 a.m -..- 12.10 3,480 4 a.m -. 12.10 3,480 12m.-- 12 00 3 440 12 m-_. __ -. 9.80 2,330 3,990 12 11.37 3,150 12 p.m.-.--- 1,540 6p.m._- 13.40 4,150 14.70 4,830 May 1 Mayl7 Junet 10.65 6.28 798 9 on 16.40 5,820 17.25 6,330 May 18 19 17.80 6,670 12m.- 10.30 2,680 1 a.m. __ ... 7.50 1,280 JuneS 6 p.m.--. .- 13.58 4,240 2.- _ . 10.80 2,820 12 15.60 4,570 14.60 4,780 10 a.m .... . 17.90 6,740 12 p.m...... 16.62 5,950 6p.m...... 17.75 6,640 17.30 6,360 May 19 17.30 6,630 9 17.65 6,880 17.40 6,420 17.80 6,980 10 f\f\ 6,800 1Z m...... 16.12 5,650 6 18.27 7,200 18.35 7,030 15.25 5,130 12 . 18.27 7,200 19 18.60 7,190 B24 FLOODS OF 1957

8. BEAVER CREEK NEAR WATJRIKA, OKLA. Location. Lat 34°13', long 98°03', on north line NW^NW^ sec. 16, T. 4 S., R. 8 W., on left bank on downstream side of bridge on State Highway 5, 4.5 miles northwest of Waurika, 6.2 miles upstream from Cow Creek, and at mile 25.8. Drainage area. 563 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 879.17 ft above mean sea level, datum of 1929 (levels by Oklahoma State Highway Commission). Discharge record. State-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 22,500 cfs 4:15 a.m. May 26 (gage height, 21.82ft). 1953 to March 1957: Discharge, 32,200 cfs May 20, 1955 (gage height, 22.42ft). Maximum stage since at least 1889, 22.7 ft on May 18, 1951, from floodmark (discharge, 65,300 cfs by contracted-opening measurement). A similar stage was reached sometime before 1889, according to information furnished by local resident.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1. ----- 6.2 1,720 4,020 3.6 462 196 21 1,600 819 151 2 5.7 1,770 2,300 19 3.6 206 180 22 2,040 345 123 3 6.5 2,120 1,420 13 3.5 505 202 23 3,520 1,450 109 4 6.3 5,060 1,730 3.2 1,510 206 24 3,360 1,860 116 5 5.6 4,950 1,700 15 3.0 818 165 25 2,060 1,300 114 6 _ 5.7 2,480 938 16 4.0 180 626 26 2,420 17, 900 93 7 5.5 298 359 17 3.9 477 183 27 3,050 4,730 87 8 . 4.8 166 257 18 _- 3.7 9,260 223 28-.- 938 1,050 81 9 - 4.1 365 221 10 4.1 11,800 885 OQ 989 347 75 10 3.8 1,010 200 20 __ 45 4,070 419 30 1,680 422 69 Si-­ 2,050

Monthly mean discharge, in cubic feet per 726 2,629 582 Runoff, in acre-feet.. ___ ...... 43, 220 161, 700 34, 610

9. LAKE KICKAPOO NEAR ARCHER CITY, TEX. Location. Lat 33°39'45", long 98°45'45", at intake tower near left end of dam on North Fork Little Wichita River, 8.2 miles south of Mankins and 9.2 miles northwest of Archer City, Archer County. Drainage area. 275 sq mi. Gage-height record. Staff-gage readings made twice daily. Datum of gage is at mean sea level, datum of 1929. Maxima. April-June 1957: Contents, 117,900 acre-ft 8 a.m. May 19 (elevation, 1,046.8 ft). 1946 to March 1957: Contents, 134,300 acre-ft Aug. 2, 1950 (elevation, 1,049.2ft). Remarks. Lake is formed by an earth-fill dam 6,800 ft long, containing a re­ inforced concrete ogee-type uncontrolled service spillway, 482.7 ft long, at right end of dam, Dam completed Dec. 15, 1945, and storage began Feb. 1, 1946. Capacity, 106,000 acre-ft between elevations 1,000.92 ft at sill of two 48- by 60-inch outlet conduits and 1,045.0 ft at top of service spillway. Maximum capacity, 220,000 acre-ft at elevation 1,060 ft with 2-ft freeboard. TEXAS AND ADJACENT STATES B25

There is no dead storage. Water is used as municipal supply for city of Wichita Falls. Capacity curve and records of observed lake elevations furnished by city of Wichita Falls.

Elevation, in feet, and contents, in acre-feet, at 8 a.m. of indicated day, 1957

A-P ril M ay June Day Elevation Contents Elevation Contents Elevation Contents

1 68,420 1, 044. 2 101, 000 1, 045. 1 2 . 1, 038. 4 68 420 1, 044. 6 103,500 1, 045. 2 107, 300 3 ...... 1, 038. 4 68,420 1, 045. 0 106,000 1.045.3 108,000 4 1,038.4 68,420 1, 045. 3 108,000 1 045.3 108,000 5... .--.--...... -.-.....-... 1, 038. 4 1, 046. 0 112,500 1, 045. 5 6 _. 1, 038. 4 68, 420 1, 045. 6 7..-.--.-...... 1, 038. 3 67, 940 1, 045. 6 109, 900 1, 045. 6 8 1, 038. 3 67, 940 1, 045. 6 109. 900 1. 045. 5 109, 200 9 1, 038. 3 67, 940 1. 045. 5 109, 200 1, 045. 4 108, 600 10 - 1, 038. 3 67,940 1, 045. 5 109. 200 1, 045. 3 108, 000 11 1, 038. 3 67 940 109, 200 1, 045. 3 108, 000 12...... 67, 460 1, 045. 3 13 1,038.2 1, 045. 7 1. 045. 3 14 1, 038. 2 67, 460 1, 045. 7 110,600 1, 045. 2 107, 300 15 . 1, 038. 1 66, 980 1, 045. 2 16 1, 038. 1 66, 980 1 041 A. 108,600 1, 045. 1 17 1. 038. 1 66, 980 1, 045. 1 106,600 18 1, 038. 0 1, 046. 2 113,800 1, 045. 2 107, 300 19 1. 038. 0 66, 500 m oon 1, 045. 2 20 1 038 0 1. 045. 2 107,300 21 - 67, 460 1, 045. 8 1. 045. 1 106, 600 22 . . 1,038.3 67, 940 1, 045. 6 109, 900 1. 045. 1 106, 600 23 ___. ______i n^s. ^ eg Qflfl 109, 200 1.045 1 24 1,038.6 69. 380 108, 600 1, 045. 1 106,600 25...... 1,038.6 1 045. 4 108,600 1, 045. 0 106,000 26 ______1,038.7 1. 045. 4 1, 045. 0 106, 000 27 1,039.9 75, 980 1. 045. 4 108, 600 1,045.0 106, 000 28 1 040 1 77, 050 1 045. 3 108,000 1, 045. 0 106, 000 29 - ...... 1,041.8 86, 560 108,000 1, 045. 0 106, 000 30 1, 045. 2 107,300 1, 044. 9 105, 400 31 1. 045. 2 io7 ^nn +27, 010 -1, 900

10. LITTLE WICHITA RIVER NEAR HENRIETTA, TEX. Location. Lat 33°50'00", long 98°12'30", on left bank at downstream side of bridge on State Highway 148, 1.5 miles northwest of Henrietta, Clay County, 4 miles upstream from Turkey Creek, and 5 miles upstream from Dry Fork Little Wichita River. Drainage area. 1,037 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 831.57 ft above mean sea level, datum of 1929. Discharge record. Stage-dischargerelationdefinedby current-meter measurements. Maxima. April-June 1957: Discharge, 6,390 cfs 4 p.m. May 2 (gage height, 18.36ft). 1953 to March 1957: Discharge 5,890 cfs Oct. 26, 1953 (gage height, 17.91 ft). Flood of 1908 reached a stage of about 21 ft; information from State Highway Department. Remarks. Some regulation by Lake Kickapoo on North Fork. City of Wichita Falls diverts water from Lake Kickapoo for municipal use and city of Henrietta diverts water from gage pool for municipal use. 656087 O 62- 3 B26 FLOODS OF 1957

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

!-----_ 2.7 5,370 1.230 11 0 3,050 348 21 1,220 3,640 194 2__._.__ 2.0 6,080 1.910 12 . 0 2, 510 170 22 654 4,000 70 3 .. 2.7 5,530 2,220 13 0 2,830 128 23 1,150 4,050 35 4 2.0 4,980 2,040 14 . 0 2,680 185 24.. 1,490 3,800 18 5 .7 4,350 1,700 15 .. 0 2,220 167 25 1,620 3,690 10 6... . .1 4,040 1.720 16..... 0 2,200 93 26 3,110 3,030 7.6 7 . .1 3,910 2,040 17 0 2,410 58 27 3,430 2,240 6.4 8_ 0 3,760 2,170 18 0 3,740 44 28 3,280 1,890 2.7 9 _ 0 3,640 2,170 19 6.8 3,460 152 29 4,050 1,230 1.5 10 0 3,410 1,540 20 98 3,220 346 SO ­ 5,140 331 .7 SI 361

Monthly mean c ischarge, in cubic feet per 842 3,820 693 Runoff, In acre-fc et 50. 100 201, 600 41, 210

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April H May 3 May 23 12 p.m.._ .... 13.23 1,550 18.15 5,430 12m 17.73 4,050 18.10 17.75 4,120 April 05 12 17.68 3,900 May 4 12 91 1 490 12 16.43 2,270 18.05 5,100 n QO 12m-. - 17.61 3,840 April m 17.54 3,640 12 - 17.59 3,780 17.00 2 7 cn 12m-. 17.32 3,320 16.54 2,330 May 2S 17.45 May 17 12m.- 17.58 3,750 April 27 17.41 3,490 16.58 2,360 12m... 17.38 3,440 10 17.00 2,770 May 31 17.32 3,270 n oo 12 p.m_-_ 8.90 524 April 28 May 18 June 1 lOa.m ...... 17.25 3,120 17.50 3,670 12p.m.. __ 17.47 3,560 17.68 3,990 11.45 1,180 17.57 3,780 12.15 1,340 April 29 12 13.70 1,620 May 19 12m__._ _ .. 17.68 3 990 12 p.m.... .- 17.97 4,670 12 m ----- _ 17.37 3,410 1 7 9Q 15.18 1,900 16.34 2,210 May 20 18.16 5,280 18.12 5,100 17.23 3,140 17.34 3,390 12m. - 16.43 2,250 16.23 2,160 May il 12m-- "i 330 12p.m.. _ 18.25 5,730 12m._ 17.47 3,610 3,960 12 m_-_--- 15.88 2,060 15.06 1,870 May 22 18.31 6,110 4p.m...... 18. 36 6,390 12m-. 17.68 3,960 12 18.29 17.73 4,120

11. RED RIVER NEAR TERRAL, OKLA. Location. Lat 33°52'50", long 97°56'15", near center of stream on downstream side of pier of bridge on U.S. Highway 81, a quarter of a mile downstream from Chicago, Rock Island and Pacific Railroad bridge, 1.2 miles south of TEXAS AND ADJACENT STATES B27

Terral, Jefferson County, 3.2 miles downstream from Little Wichita River, and at mile 872. Drainage area. 28,723 sq mi, of which 5,936 sq mi is probably noncontributtng. Gage-height record. Water-stage recorder graph except Apr. 1-20 and June 6-30, for which graph was drawn on basis of wire-weight gage readings made at least once daily. Datum of gage is 770.31 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 110,000 cfs 8 a.m. June 4 (gage height, 22.72ft). 1938 to March 1957: Discharge, 197,000 cfs June 8, 1941 (gage height, 28.12ft). Maximum stage known before 1938, 27.2 ft on May 19, 1935; floods of 1891 and May 1, 1908, reportedly reached about the same stage. Remarks. Some regulation by Lake Kemp on Wichita River in Baylor County, Tex. (see p. 21); Lake Kickapoo on North Fork Little Wichita River in Archer County, Tex. (see p. 24); Lake Altus on North Fork Red River in Kiowa County, Okla.; and Lake Lawtonka and Lake Thomas in Cache Creek Basin in Comanche County, Okla. Principal diversions are from Wichita River for irrigation of about 20,000 acrea in the vicinity of Wichita Falls, Tex. and from North Fork Red River for irrigation of about 48,000 acres in the vicinity of Altus, Okla. Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 _ . ... 328 53, 200 24, 100 11 538 45,900 10,200 21- _ - 7,700 48,700 12, 400 2-.-. ... 328 42, 400 49, 400 12 440 35,500 9,890 22 36,200 20,600 6,300 338 54, 700 63,300 13 430 55. 200 5,800 23 32, 300 31,200 3,920 4 - 342 61,900 86,800 380 53,600 6,270 24 35, 100 33.600 3,430 5 _ 1,200 67, 300 42. 700 15 328 34, 300 6,270 25 35,900 30,700 2,740 2,750 68, 100 39,800 16 285 28,200 5,360 26 37,200 42,400 2,270 7 .... 1,860 49,000 27,000 17 294 29,700 4,090 27 43,300 64,900 2,000 8 1,190 27,200 17,200 18 255 62,800 3,160 28 31, 200 39,600 1,900 9 822 17,200 13,300 19--... 289 80, 700 10,000 29 32,300 15,800 1,710 10 628 36,200 11,000 20 621 84,100 14,400 30 61,400 11,600 1,530 31- 24,500

Monthly mean discharge, in cubic feet per s 12, 210 43, 580 16, 270 Runoff, In thousands of a ere feet 726.4 2,679 968.4

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 19 April 88 April &5 7.56 346 1 7 OQ 35, 700 17.40 36, 200 17.69 17.00 31,700 April HO 17.73 41 400 9 17.51 37,400 6 17.46 39,600 12 17.48 37,000 8.05 622 12 16.76 12 1,170 April m April 8S April 81 12m 17.23 34,300 12m- - 34, 100 18.02 43,300 9.43 1,850 1 R 93 97 onn 8 ...... 11.00 3,880 April 27 12m- 12.30 6,090 13.44 18.26 45,800 8 - 14.24 12,600 12m- 17.27 37, 500 18.00 42,200 12.. 16.07 23.900 12D.m . -.. 17.40 37.600 12 17.73 38,600 B28 FLOODS OF 1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 28 May 1% Con. May 26 12m 17.25 16.68 07 Knn 12m.. - 17.61 39,800 12 p.m._. __ 16.80 17.47 45,700 19.15 60,300 April 89 May 13 MayKT 16.24 18, 400 12m... 18.48 KC Cflfl 20.06 71,900 16.69 22, 800 18.82 60 800 18. 89 56,700 4 17.96 49 7nn 18.77 60,200 12- 61,100 May 14 April 30 12m. .. 17.57 39,200 12m--. 18.48 56,900 12 p.m.. _ .. 16.11 23.200 19.39 62,500 17.00 40 ' 600 19.18 60,700 12 19.20 61 ' 400 May 15 12m..... 14.93 15,000 12m-_ 16.22 33,000 13.91 10,200 15.95 30 * 600 12m-- KK Qnn 16.76 12 m ...... 13.65 9,000 May % 15.60 27,700 14.85 14.200 15.47 26,400 12 17,000 12m_-_ 16.92 41,100 12 16.33 17.51 48,200 May 17 May 3 7a.m ____ . 16.56 25,600 16.86 QQ onn 10 16.48 24,600 12m .- 18.02 54,700 6 - 16.04 31,200 16.73 27,100 18.52 12 16.62 25,900 12 15.35 25,300 May 4 June 1 May 18 1Q Gf\ 62,100 1 K 70 12 p.m... 18.60 17.42 45,100 17.12 31, 700 1Q4.fi 12.. __._..-_.- 17.65 ?7, 700 76,300 June % 19.07 67 900 1Q 00 n dnn 18.87 53, 000 12m.- 20.55 81,400 12 p.m.. __ 18.95 54, 100 May 6 20.74 83, 700 JuneS 10 49 79 "inn 18.89 19.42 60,600 12 18.56 61,400 21.00 87,800 20.65 77,800 12m._- 20.92 86,500 20.43 79,200 12 20.08 74,000 17.69 40 Qnn 110 000 12 p.m.. 16.39 May HI 20.68 79,600 12 18.30 48,200 May 8 12m__ - 18.13 46,400 16.56 28,000 12m..- .. 17.63 40, 200 17.96 44, 100 May9 12m-.. 15.57 18,900 15.22 16,700 13.68 15,100 14. 27 18,000 12m...- 17. 65 40, 400 17.08 34, 100 May 10 10 a.m...... 16.06 22,800 17.57 39,200 15.52 18.11 46.200 12m- 16 92 39 800 16.47 27, 300 18.12 52,800 May $4 15.68 20,400 May 11 12m...... 16.75 30,000 16.60 28,400 12 m_. ------46,800 15.07 16,900 16.65 May #5 14.62 14, 700 May 1% 12m-- 16.97 32,300 12m. ._ 15.84 29,700 16.74 29, 900 TEXAS AND ADJACENT STATES B29

12. RED RIVER NEAR QAINESVTLLE, TEX. Location. Lat 33°44', long 97° 10', in SW# sec. 36, T. 9 S., R. 1 E., near center of span on downstream side of bridge on U.S. Highway 77, a quarter of a mile downstream from Gulf, Colorado and Santa Fe Railway bridge, 5 miles down­ stream from Fish Creek, 7 miles north of Gainesville, and at mile 791.5. Drainage area. 30,782 sq mi, of which 5,936 sq mi is probably noncontributing. Gage-height record. Water-stage recorder graph except Apr. 1-21, for which graph was drawn on basis of wire-weight gage readings made twice daily. Datum of gage is 627.91 ft above mean sea level, datum of 1929 (levels by U.S. Army Corps of Engineers). Discharge record. Stage-discharge relation denned by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 102,000 cfs 10:30 a.m. to 12 m. June 5 (gage height, 25.14 ft, backwater from Lake Texoma). 1936 to March 1957: Discharge, 168,000 cfs June 9, 1941; gage height, 26.53 ft May 21, 1951. Cooperation. Records collected and computed by U.S. Army Corps of Engineers and reviewed by U.S. Geological Survey.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1- .... 781 64,700 39,000 11 970 42, 700 14, 000 21 1,590 98.000 17,400 2 . 572 52,700 42,500 12 772 38, 300 11,800 22 16,600 53,000 13,300 3 1,540 39,100 70,000 13 781 39,100 9,570 23 . 39, 100 27,400 8,180 4--. --. 1,760 46,300 82,000 14 835 57, 100 8,500 24-. . 33,200 36,000 5,860 5 1,030 54, 400 95,000 15 612 47,200 8,500 25 36,600 39,000 5,350 6-. ... 588 61,900 53,000 16 519 27,500 8,500 26 55,300 39,500 4,540 7-.. ... 740 66,600 32,500 17- - 428 32,300 7,570 27 59,000 43, 000 3,820 8 2,550 42,400 23,200 18 390 60,000 6,300 28 49,000 70,000 3,180 9 1,990 22,700 18,200 19 434 85,000 5,260 29 . 37,400 35,600 2,780 10 1,350 19,700 15,700 20 400 98,000 8,920 30 47, 200 17,000 2,700 31 25, 000

Monthly mean discharge In cubic feet per s 13, 130 47, 780 20,900 Runoff, hi thousands of acre-feet 781.6 2,938 1,244

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May 16 May 18 -Con. May n 12p.m._._.__ 13.81 19.05 70, 400 20. 80 77. 300 8 - 18.60 65, 700 8 19. 40 62, 000 May 17 12 19.20 71, 400 12m _ ------18. 14 49, 000 17. 16 40, 000 6_ 13.51 8 .. - 16. 64 35, 300 10 13.46 in 16. 22 32, 000 12 m. __ 22.600 20.89 86, 000 2p.m...... 14.90 32, 300 21 90 94 ' 000 4 15.70 QQ IflA 6...... 16.40 45 400 15. 80 29, 000 8 ... 17.14 15. 38 25, 000 10 17. 15 52, 600 12m.. __ .. 22.48 98, 000 15. 64 27, 300 12 17.43 99 an 100, 000 15. 60 27, 000 12 22.80 100, 000 6. 15. 50 26, 300 May 18 12 15. 36 25, 000 2 a.m ...... 17.60 May tl 6 ...... 17.45 10 17,15 99 7fl 16. 18 33, 500 12m... 17.34 53, 500 12p.m ...... 21.75 88,000 8 . _ - 17. 18 35, 000 B30 FLOODS OF 1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May $4 Con. May SO Con. June 5 Con. 12m . 17.90 37, 500 14.80 15, 100 23.75 84,000 18.20 38, 200 19 14.58 10 23.22 77, 000 8 18.40 12 22.75 71,000 12 18.33 June 6 May 85 14.68 15,400 6...... 14.76 15. 800 12m 21.20 50,000 12m...--.... 18.86 40,000 8 15.29 19, 000 12 p.m.- 20.72 44,000 12p.m.. -..._ 18.40 39, 000 10 15.92 22, 700 12m.. 16.48 26, 000 June? May 26 2p.m...... 16.84 28. 000 4 . ----- 17.35 30, 800 12m- 19.42 31,500 12m...... 18.90 6 17 78 18.48 27,500 18.73 39. 300 12 18.43 June 8 May 27 June 1 12m-. 17.45 23,000 18.89 39. 800 12m _ ...... 18.90 39,500 12 p.m.. _ 16.52 20,000 12m...... 19.24 41. 300 -iQ no on cn(l 19.55 43, 800 8.--- -- 20.21 49. 500 12 20.90 15.84 18,000 18.58 37, 800 12 p.m.-. ... 15.40 16,800 May es 8 18.70 38, 500 10 18.65 38. 000 21.49 68, 000 18.84 39,000 8. ----- 21.82 73, 000 19.20 14.95 15,700 12 m.. ------21.93 75. 000 4 . ----- 19.67 44 400 14.62 14,800 21.95 75, 000 6 . 48, 000 6 21.82 73. 000 8 -- _ 20.55 51. 300 12 - 21.10 62,000 21.00 55.000 12 21.38 59,000 12m- 14.28 14,000 May 29 13.90 13,000 JuneS 20.38 51, 400 8 19.55 40, 500 22.70 72, 000 12m- 18.64 31, 300 23.10 77. 000 13.46 11,700 17.82 1 o QQ 10,500 8 . 17.19 22, 800 12 16.62 20. 600 23.50 81,000 May SO 24.50 94,000 12m-- - 12.47 9,500 12.11 8,750 16.10 18,900 8 15.60 17, 400 12m....--... 15.19 16, 300 OA QQ 14.85 15, 200 10:30.- 25.14 11.96 8,430 6 14.90 15,900 12m. 25.14 102. 000 11.93 8,370 8 14.85 15,200 24.34 Q9 nftn

Note. Except for May 29, daily discharge computed from daily mean stage.

13. WASHITA RIVER NEAR DURWOOD, OKLA. Location. Lat 34°14', long 96°58', in SE% sec. 3, T. 4 S., R. 3 E., near left bank on downstream side of pier of bridge on State Highway 18, 1.3 miles downstream from Caddo Creek, 4 miles north of Durwood, and at mile 63.4. Drainage area. 7,202 sq mi. Gage-height record. Water-stage recorder graph except Apr. 10-21, 28-30, May 2, 3, May 5 to 2 p.m. May 13, 4 a.m. May 15 to 1 a.m. May 17, 7 p.m. May 18 to 8 a.m. May 19, 12 m. May 21 to 11 a.m. May 22, June 13, 14, 20-23, 26-30, for which graphs were drawn on basis of floodmark, observed crest time, and wire-weight gage readings made at least twice-daily. Datum of gage is 650.57 ft above mean sea level (levels by U.S. Army Corps of Engineers). Discharge record. Stage-discharge relation defined by current-meter measure­ ments. TEXAS AND ADJACENT STATES B31

Maxima. April-June 1957; Discharge, 98,000 cfs about 3 a.m. May 19 (gage height, 42.30 ft, from floodmark). 1928 to March 1957: Discharge, 91,300 cfs May 11, 1943; gage height, 44.37 ft Oct. 31, 1941. Maximum discharge known, that of May 19, 1957. Remarks. Ten discharge measurements furnished by U.S. Army Corps of Engineers.

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May 15 May 19 Con. May 84 Con. 12 p.m.,. .... 14.40 7,130 12 p.m ...... 36.70 72, 000 12m__ ... 15.50 11. 300 14.90 10,300 May 16 8 ...... 14.40 9,500 10 14.20 9,100 13.85 6,310 34.45 64, 000 M l t\ 9.000 8 ...... 13.48 5,790 12m...... 31.65 54,600 14.30 9,400 12m...... 33.24 5,410 27.00 40, 200 4p.m...... 13.10 5,290 12...... 19.35 18, 800 5:30...... 13.06 5,290 8 13.20 5,410 May tl 15.10 10,600 10 13.75 6,310 4 ...... 16.80 13, 800 12 ___ ...... 16.70 10,900 17.10 13,800 6...... 18.40 17,200 8...... 15.90 11, 400 8 .... - 19.90 20, 900 May 17 12m...... 15.20 10, 000 10 21.40 24,500 14.30 8,600 12m.. . 22.50 27, 000 2a.m...... 21.00 18,900 12...... 13.70 7,600 23.47 29. 700 4 __ .. _ . ... 24.40 26,400 4 ..... 24.30 32,200 6 _ . _ ...... 24.95 27,900 May tt 6 ...... 24.85 33, 800 8...... 26.70 32, 100 8 ...... 25.36 35, 300 10 30.50 43,600 13.35 7,200 10 OK 7ft 36, 600 12m...... 32.90 51, 900 10 13.20 6,800 12 - 26.15 37,700 2p.m...... 34.40 57,400 12m... __ .. 13.20 6,800 4 _ ...... 35.05 KQ 7ftft 13.10 6,680 6 .... 35.20 60,500 4 ...... 13.12 8 ...... 35. 15 60,500 6 ...... 13.45 7,130 Ofi OK 39,600 10p.m...... 34.95 59, 700 8...... 14.20 8,400 g 40, 900 12 34.88 59,300 10 15.75 11,000 11:15-- 41, 000 12 17.50 14, 600 27.31 41, 000 May 18 27. 14 40,500 May 83 8 26.70 39,400 2a.m______34.95 59,700 19 26.14 38, 400 ^...... 35.40 19.30 IS 7ftft 8...... 36.78 67, 100 on on May 87 12m...... 37.90 71,900 6...... 2p.m...... 38.55 75, 300 8 22.55 27, 300 34,300 4.-.-.-.. _ .. 39.50 80.200 10 22.85 28,200 ^4.37 32,600 6...... 40.50 86, 100 12m.. 23.00 28,500 23.75 31,200 10...... 41.80 94, 500 23.30 29, 800 12...... 42.18 22.70 10 27, 700 6 ...... 22.30 26, 700 12..... _ .... 21.25 24,600 May 19 8 ...... 21.40 24,500 10 20.38 21,800 May 88 2 a.m. ___ .. 42.28 98,000 12 19.35 17.80 16, 700 3.-.-...... 42.30 Q 15.64 12, 600 4...... 42.28 98,000 10,400 8 . 41.95 95, 900 13.84 9,500 12m...... 40.80 88.800 17.70 15, 700 8 ...... 13.47 8,900 6 p.m...... 38.75 79.600 8...... 16.40 13. 000 12 13.18 8,400 B32 FLOODS OF 1957

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 .. _ . 3,610 15, 100 23,000 1,190 8,900 4,210 21 22,300 10,900 2,630 2. .,. 1,600 13, 200 24, 200 12_____ 930 5,790 3,540 22_____ 20,400 7,810 2,590 3.. .. 13,500 14,500 18,000 13 __ 805 13,500 2,920 23 24, 400 24,800 3,980 4 ______6,700 16,500 15,900 14 580 23,700 2,720 24_.___ 26,100 12, 300 6,620 5_ 3,320 11,800 17,500 15 520 11,100 10,700 25. 11, 300 25,400 4,450 6_ 2,230 7,700 14,700 16 500 6,050 15,400 26 24, 000 39,900 2,820 7- 2,490 6,570 9,700 17.- 452 44,500 7,820 27 20,800 32,500 2,360 8.- _ __ 3,430 7,130 8,300 18 - 408 74, 900 4, 670 28 10,800 12, 400 2,220 9 2,540 8,450 7,550 384 87,800 5,670 29 10. 100 7,700 2,450 10 1,740 9,820 5,530 20.____ 633 51,000 3,820 30.____ 11,400 8,690 2,090 31 28,200

Monthly mean discharge, in cubic feet per s 7,639 20,920 7,935 Runoff, in thousands of acre-feet 454.5 1.286 472.2 14. LAKE TEXOMA NEAR DENISON, TEX. Location. Lat 33°49', long 96°34', in NE^ sec. 33, T. 8 S., R. 7 E., Indian meridian, at Denison Dam on Red River, \}i miles upstream from Shawnee Creek, \% miles upstream from Sand Creek, 4 miles northwest of Denison, Grayson County, and at mile 725.9. Drainage area. 39,719 sq mi, of which 5,936 sq mi is probably noncontributing. Gage-height record. Water-stage recorder graph. Datum of gage is at mean sea level, datum of 1929 (levels by U.S. Army Corps of Engineers). Maxima. April-June 1957: Contents, 5,991,300 acre-ft 9 p.m. June 5 (eleva­ tion, 643.18ft). 1942 to March 1957: Contents, 4,295,000 acre-ft Apr. 19, 1945 (elevation 629.07 ft); capacity table then ip use. Elevation, in feet, and contents, in acre-feet, at 12 p.m. of indicated day, 1957

April May June Day Elevation Contents Elevation Contents Elevation Contents

1 600.65 1, 646, 600 621. 80 3, 297, 700 641.85 5, 794, 800 2 . 600.73 1, 651, 200 622, 75 3, 394, 600 642.12 5, 834, 400 3 601.75 1, 709, 400 623.28 3, 449, 200 642. 44 5, 881, 500 602.06 1,727,000 623.67 3, 490, 200 642. 78 5, 931, 500 5_. ______._._--______. 602.16 1, 732, 700 624, 14 3, 539, 500 643. 15 5,986,800 6 _ __ 602.35 1, 744, 000 624, 55 3,583,000 642. 85 5,941,800 7 _ - - 602.70 1, 765, 000 625. 05 3, 637, 000 642. 23 5, 850, 600 8 _ _ . 602.63 1, 760, 800 625.20 3, 653, 200 641.66 5, 766, 800 9 602. 70 1, 765, 000 624, 80 3, 610, 000 640, 94 5, 663, 800 10 602. 75 1, 768, 000 624. 45 3, 572, 200 640. 18 5, 555, 900 11_ 602. 87 1, 775, 200 624, 66 3, 594, 900 639. 38 5, 444, 700 12______- _ _ _ 602. 89 1, 776, 400 624. 83 3, 613, 200 638.65 5, 344, 000 13 602.92 1, 778, 200 625. 24 3, 657, 500 637. 94 5, 246, 800 14 602.95 1, 780, 000 526. 20 3, 763, 300 637. 58 5, 198, 200 15 602.93 1, 778, 800 627.24 3, 881, 000 636. 30 5, 025, 400 16 602. 90 1, 777, 000 627.64 3, 927, 000 635. 78 4, 955, 200 17 602.88 1, 775, 800 628. 10 3, 980, 800 635. 27 4, 887, 600 18 602. 87 1, 775, 200 629.24 4, 116, 700 634. 65 4, 805, 800 19 . - _ - 603.05 1, 786, 000 630.86 4, 316, 900 633. 95 4, 713, 400 20 603.32 1, 802, 200 632. 85 4, 570, 400 633.16 4, 610, 400 21... 603.66 1, 822, 600 634. 25 4, 753, 000 632.52 4, 527, 900 22 604. 11 1, 819, 600 634.50 4, 786, 000 631.84 4, 440, 300 23 606.57 2, 007, 200 634.91 4, 840, 100 631.23 4, 363, 500 24 608. 34 2, 128, 200 636.10 4, 998, 400 630. 38 4, 256, 700 25 610. 40 2, 280, 700 637. 68 5, 211, 700 629. 44 4, 141, 100 26 . .. _ --.-_--_ 613. 70 2, 547, 100 638.75 5, 357, 800 628. 52 4, 030, 300 27 615. 97 2, 743, 600 639.76 5, 497, 200 627. 56 3, 917, 600 28 617. 74 2, 904, 800 640.73 5, 634, 000 626.55 3, 802, 300 29- . 619. 15 3, 037, 600 640.93 5, 662, 400 625. 44 3, 679, 100 30 620.49 3, 167, 400 640.80 5, 643, 900 624. 33 3, 559, 400 31 641.04 5, 678, 000 Change in contents, acre-feet- +1, 524, 700 . _ -_--- _ . +2, 510, 600 _____ -.-- 2, 118, 600 TEXAS AND ADJACENT STATES B33

Remarks. Lake is formed by a rolled-fill earth dam. Regulated storage began Oct. 31, 1943. Capacity, 5,530,300 acre-ft at crest of spillway (elevation 640.0 ft) and 2,836,300 acre-ft at maximum elevation of power pool (elevation 617.0 ft). Lake is used principally for flood control and power development. Records furnished by U.S. Army Corps of Engineers.

15. RED RIVER NEAR COLBERT, OKLA. Location. Lat 33°49', long 96°31', in E/2 sec. 36, T. 8 S., R. 7 E., near center of span on downstream side of pier of highway bridge, 1.3 miles downstream from Sand Creek, 2 miles south of Colbert, 2.9 miles downstream from Denison Dam, and at mile 723.0. Drainage area. 39,777 sq mi, of which 5,936 sq mi is probably non contributing. Gage-height record. Water-stage recorder graph except 9-11 p.m. May 18 and May 27, for which graphs were drawn on basis of recorded range in stage and shape of graph for adjacent periods. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 102,000 cfs 4 p.m. June 5 (gage height, 26.26ft). 1923 to March 1957: Discharge, 201,000 cfs May 21, 1935; gage height, 32.0 ft Apr. 25, 1942. Maximum stage known, 45.5 ft on May 26, 1908, from records of U.S. Weather Bureau. Remarks. Ten discharge measurements furnished by U.S. Army Corps of Engi­ neers. Flow regulated by Lake Texoma, 2.9 miles above station.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 ...... 2,360 13, 000 55,700 2,030 40,500 70, 900 21 . 650 62,000 58, 800 2... _ 2,910 27,300 66,900 12 2,150 40, 800 69,500 22 2,070 58, 800 55, 800 3 3,600 32,900 76,300 13 970 33, 800 59,300 23- 3,380 28,500 54, 300 4 . .... 2,640 45,800 79,200 14... __ 160 19, 200 65,800 24 2,800 10,600 60,200 5 ...... 2,230 48, 800 96,200 15 2,410 16, 000 64,200 25 2,390 11,300 61,800 6 ... 300 52,900 91,600 16 2,520 14,000 62,600 26 6,150 6,740 61,800 7 _-_- 96 49,500 91,600 17 2,760 18,700 58, 000 27 9,710 8,280 61,000 8_ 2,190 46, 900 81,000 18 2,510 38,900 50,800 28 9,460 12, 900 61,000 9 2,980 53,700 77, 200 19 . 3,710 53,400 54,300 29 9,360 27, 900 64, 200 10 2,380 53, 900 74,200 20 1,200 59,500 58,000 30 7,950 iO, 100 66, 600 31 49, 300

Monthly mean discharge, in cubic feet per ; 3,201 34, 710 66, 960 Runoff, in thousands of a 190.5 2,134 3,984 B34 FLOODS OF 1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May 26 May SI June 6 con. 12p.m.. __ 9.76 7,150 19.70 45, 000 25.70 95, 700 12m---..-.-. 20.69 51,500 4p.m. . ______26.26 102, 000 May 27 20.81 52,200 6 ...... 26.16 101,000 12...... 20.20 48,200 12 24.12 79,600 5 a.m _ . _ .. 9.28 5,900 8...... - 9.24 5,800 12 m...... 10.78 9,930 5p.m... __ 10.90 10, 300 20.05 46, 900 24.30 81,600 7:30...... 10.47 9,070 5...... 20.25 48, 200 5 _ .....--.-. 25.45 92,600 10...... 10.88 10, 200 12m ...... 22.26 63, 400 7...... 25.50 93,600 12...... 10.09 8,040 21.35 56,500 9 ...... 25.78 96, 800 10...... 21.78 59,500 25.38 92,600 May 2(, 12 _ ...... 21.54 57, 200 8 25.50 93,600 12...... 25.52 93,600 4 a.m.___ __ 9.34 6,050 8...... 9.24 5.800 10...... 10.50 9,150 21.50 57, 200 12m.._._ ... 10.82 10, 000 11 21.70 58, 800 12m_...... 25.20 90,600 5 p.m...... 14.33 20,800 23.82 76, 600 25.32 91. 600 7.-30...... 14.30 20, 800 6...... 24.00 78,600 10...... 14.52 21,500 12. 23.78 76,600 12...... 14.05 19,800 25.00 88,600 May Iff 10... 25.10 89,600 23.85 76, 600 12m... _ ... 23.90 77,600 5 a.m ...... 14.00 19,800 12m...... 23.80 76, 600 23.08 70, 100 7...... 14.20 20, 500 23.70 75,600 12...... 23.38 72, 800 12m__.__ .... 15.20 23,900 10...... 23.82 76,600 5 p.m...... 18.45 37,600 23.60 74, 600 7:30...... 18.40 37,600 10...... 18.68 39,200 12m_.__ .... 23.92 77.600 12...... 18.10 36, 100 24.18 80,600 23.50 73, 700 12.....-- . 23.88 77,600 May SO 23.75 76,600 4:30..- -... 24.62 84,600 June 10 4 a.m...... 17.79 34,600 5:30... .-. 23.50 73, 700 8 ...... 17.80 34,600 8 25.10 24.00 78,600 12m..... _ . 18.54 38,100 25.70 95, 700 12m...... 23.55 74,600 18.50 38, 100 23.35 72, 800 5 ...... 19.50 43, 8QO 9 .... . 23.20 71, 000 9...... 20.82 12...... 22.68 66, 600 12 __ ...... 20.23 48,200 25.92 97,900

16. RED RIVER AT ARTHUR CITY, TEX. Location. Lat 33°53', long 95°30', in NWM sec. 11, T. 8 S., R. 17 E., near right bank on downstream side of pier of bridge on U.S. Highway 271 at Arthur City, Lamar County, 10.6 miles downstream from Muddy Boggy River, 26.0 miles upstream from Kiamichi River, and at mile 633.1. Drainage area. 44,531 sq mi, of which 5,936 sq mi is probably noncontributing. Gage-height record. Water-stage recorder graph except 1 p.m. Apr. 22 to 9 a.m. Apr. 26 and June 5-30, for which graphs were drawn on basis of wire-weight gage readings made at least twice daily. Datum of gate is 380.07 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 136,000 cfs 4 a.m. June 6 (gage height, 28.35 ft, from floodmark). 1905-11, 1936 to March 1957: Discharge, 400,000 cfs May 28, 1908 (gage height, 43.2 ft). Maximum stage known, that of May 28, 1908. Remarks. Some regulation by Lake Texoma, 92.8 miles above station. Cooperation. Records collected and computed by U.S. Army Corps of Engineers and reviewed by U.S. Geological Survey. TEXAS AND ADJACENT STATES B35

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 ... 13,900 55,200 89,600 11 11,700 63,600 92,500 21 24,000 72,600 67,200 2 25,400 59,400 94,400 12 6,310 46,500 83,000 22 24,000 79,200 65,400 3. ... 22,600 66,300 101,000 13 5,430 58,800 79,200 23 30,900 85,800 61, 100 4 26,800 68,100 118,000 14 5,260 76,400 69,900 24 45,800 69,000 61,100 24,000 75,400 132,000 15 4,040 51,400 72,600 25 54,400 61,100 63,600 6 - 23,200 73,500 134,000 16 4,760 34,900 70,800 26 56,000 87,800 69,000 7 .... 21,300 69,000 129,000 17 5,260 25,100 71,700 27 87,800 98,200 66,300 8. ... 20,100 62,800 124,000 18 4,920 31,600 69,000 28 90,400 65,400 65,400 9 ... 19,000 58,600 112,000 19 4,440 54,900 61, 100 29 66,300 52,800 64,500 10 15,800 60,200 99,200 20 10,300 68,100 63,600 30 58,600 57,700 64,500 31- ... 79,200

Monthly mean discharge, in cubic feet per s 27,090 63,180 83,820 Runoff, in thousands of a<3re-feet 1,612 3,885 4,988

17. RED RIVER AT INDEX, TEX. Location. Lat 33°33'05", long 94°02'25", in SWK sec. 7, T. 14 S., R. 28 W.» near right bank on downstream side of pier of bridge on U.S. Highway 71 at Index, 2% miles south of Ogden, 20.6 miles upstream from Little River, and at mile 485.3. Drainage area. 48,030 sq mi, of which 5,936 sq mi is probably noncontnbuting. Gage-height record. Water-stage recorder graph. Discharge record. Stage-discharge relation denned by current-meter measure­ ments. Discharge taken from loop curves Apr. 30 to June 30. Maxima. April-June 1957: Discharge, 154,000 cfs 2 p.m. June 8 (gage height, 28.56 ft in gage well, 29.3 ft from outside gage). 1936 to March 1957: Discharge, 297,000 cfs Feb. 23, 1938 (gage height, 34.25 ft.) Maximum stage known, that of Feb. 23, 1938. Remarks. Some regulation by Lake Texoma, 241 miles above station.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June l...... 26,600 122,000 94,200 11 29,700 65,000 136, 000 21 13,200 70,400 65,600 2 27,600 108,000 96,900 12 24,700 64,200 122,000 22 23,400 76,600 66,700 3 .... 39,400 97,200 105,000 13 19,400 60,000 108, 000 23 51,200 85,000 68,200 4 51,400 92,600 112,000 14 13,900 63,300 94,900 24 69,300 95,000 66,700 5 ... 59,000 91,800 124,000 15 10,200 78,600 84,900 25 84,300 104,000 64,400 6 60,400 90,200 137,000 16 9,440 85,400 77,800 26 97,300 106,000 63,200 7 . 58,800 88,200 148, 000 17 8,770 77,300 74,500 27- ... 107, 000 110,000 64,400 8 56,400 82,500 153,000 18 10,200 64,400 72,300 28 116,000 120,000 65,000 9 . 46,800 75,600 152, 000 19 16,200 55,500 71,200 29 124,000 130,000 64,600 10 36,100 69,800 147, 000 20 15,500 59,100 68,500 30 128,000 122,000 64,000 31 103,000

Monthly mean discharge, in cubic feet per s 47, 810 87, 510 94,400 Runoff, in thousands of ai3re-feet 2,845 5,381 5,617 B36 FLOODS OF 1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May 25 May 31 Con. June 8 24.64 105,000 12p.m...... 23.75 96,000 28.52 154,000 28.56 154,000 12 153,000 12m...... 24.70 106,000 12m...... 23.52 93,600 24.72 106,000 12p.m...... 23.52 93, 600 12m__...... 28.44 152,000 MayS7 28.30 150,000 12m...... 25. 02 110, 000 12m...... 23.80 96,500 25.40 114, 000 24.20 101, 000 12 m...... 147,000 27 96 143,000 12m...... 25.92 120,000 12m...... 24.56 105, 000 26.45 127,000 24.90 108,000 12m...... 97 fin 137, 000 27.14 129,000 26.60 129,000 12m... _ ... 25.16 112,000 12m...... 26.72 131.000 117,000 26,75 131,000 12m...... 26.68 122, 000 6..- ...... 26.73 114, 000 12 ...... 26.66 12m...... 26.16 124,000 June IS May SO 12p.m...... 26.74 131,000 12m...... 25.80 108,000 26.44 197 nnn 100,000 12m _ ...... 26.10 123,000 6 p.m...... 25.66 117, 000 12m...... 27.28 137, 000 June 14 12...... 25.25 112,000 27.80 143,000 12m...... 24.84 94,600 May 31 24.44 90,300 24.80 107,000 12m...... 28.12 148,000 June 15 12 m_...... 24.36 102,000 151,000 23.85 84,500 24.00 98,500 23.30 80,200

18. RED RIVER AT FULTON, ARK. Location. Lat 33°37', long 93°49', in NE1/^ sec. 20, T. 13 S., R. 26 W., near left bank on downstream side of bridge on U.S. Highway 67 at Fulton, 0.3 mile downstream from Missouri Pacfic Railroad Bridge, 2l/2 miles downstream from Little River, and at mile 463.0. Drainage area. 52,380 sq mi, of which 5, 936 sq mi is probably noncontributing. Gage-height record. Wire-weight gage read twice daily. Discharge record. Stage-discharge relation denned by current-meter measure­ ments. Discharge taken from loop curves. Maxima. April-June 1957: Discharge, 228,000 cfs 8 a.m. to 5 p.m. June 9 (gage height, 31.12 ft). 1927 to March 1957: Discharge, 338,000 cfs Feb. 24, 1938; gage height, 37.4 ft, Apr. 2, 1945. Remarks. Some regulation by Lake Texoma 261 miles upstream. Records collected at site 39 miles downstream were published as "at Garland" before October 1949. TEXAS AND ADJACENT STATES B37

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 43,700 220,000 142, 000 11 59, 400 94, 200 190,000 21 24,100 82, 300 75,100 2 - 44, 500 208,000 140,000 12... 53,600 87, 500 169,000 22 .. 31,000 86, 100 75,000 3 55,300 183,000 146, 000 13 46, 900 80,900 157,000 23 63, 600 92, 100 78, 800 4..... 73, 300 170,000 157, 000 14... 36, 700 78, 200 145,000 24 86, 700 104,000 78,400 5 86, 000 165, 000 176, 000 15 26, 500 99,000 132,000 25 104, 000 119,000 74, 100 6 90, 200 158,000 193,000 16-,. 19, 800 113,000 115, 000 26 119,000 131,000 71, 600 7..... 89,900 152, 000 206,000 17 16, 100 114, 000 101,000 27 137,000 142,000 70, 800 8 87,000 144,000 222,000 18 15, 100 92, 800 91, 300 28 157, '000 157,000 73, 100 9 76, 300 132, 000 228,000 19.,. 21, 900 76, 000 84,900 29 - 183, 000 171,000 73, 100 10- 66,000 104,000 222,000 20 25, 300 73, 900 79, 400 30 204, 000 173,000 72, 200 31 157,000

Monthly mean discharge- in niihir> feet tier spRonrl 71,430 127, 700 128, 000 Runoff, in thousands of acre-feet. __-.--.. _ ..-- ...... 4,250 7,855 7,614

19. SULPHUR RIVER NEAR TALCO, TBX. Location. Lat 33°23'20", long 95°07'50", on right bank at downstream side of pier of bridge on U.S. Highway 271, 2.4 miles northwest of Talco, Titus County, and 3.0 miles downstream from Mustang Creek. Drainage area. 1,365 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 290.82 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 32,000 cfs 3 p.m. Apr. 27 (gage height, 23.63 ft). 1956 to March 1957: Discharge, 13,000 cfs Mar. 19, 1957 (gage height, 22.28 ft). Maximum stage known since at least 1908, about 27.5 ft in 1908 and 1914.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 8,820 18,500 14, 700 11 130 740 2,080 21 1,370 1,860 79 2 . 22, 600 14, 100 17, 100 12 86 657 1,230 22.. ... 10, 600 1,310 71 3 . 12, 100 10,900 10, 500 13 74 9,300 980 23 15,900 4,660 90 4..----. 17, 000 8,860 17, 700 14 65 26, 000 887 24 25, 800 20, 300 116 5 14, 400 6,470 31,200 15 66 24,200 790 25 28, 500 21, 200 273 6 9,580 3,930 25,400 16 56 21, 200 670 26. 26, 800 27, 600 162 7 . 5,900 2,300 19, 300 17 65 15, 700 502 27 .... 30, 900 30,800 101 8 . 2,550 1,520 13, 600 18 92 10,000 295 28 28, 000 24,200 82 9 . 753 1,170 7,970 19..... 67 5,140 142 29 25, 700 20, 500 68 10 . 264 935 3,820 20 68 3,260 92 30 23, 500 15,000 68 Si- 9,940

Monthly mean c ischarge, in cubic feet per 10,390 11,690 5,669 Runoff, in acre-f< 3et_.-____. __. _ 618, 500 718, 500 337, 300 Runoff, in inche^ 8.50 9.87 4.63 B38 FLOODS OF 1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 19 April 27- Con. May 25 12p.m. _ ... 1.70 54 23.49 31,400 6a.m__... .. 22.41 22,100 12m...... 22.31 20, 800 April 20 22.22 19,600 12 . 22.28 20, 500 2 p.m...... 1.63 49 23.00 26,000 6 1.90 70 12 22 98 25, 700 May 26 12...... 2.90 153 22.65 25,500 12m 22.90 28, 700 680 12p.m..... 23.15 31, 800 2 a. m ...... 3.23 183 6 __ ...... 4.50 310 May 12 9...... 6.50 510 12m...... 10.00 875 7.20 580 23.23 32,700 3 p.m.... _ . 13.40 1,380 10 - 8.50 710 12m...... 23.15 31,800 6_ - ..... 16.60 2,260 11 10.25 905 12p.m...... 22.77 27, 100 9...... 18. 45 3,160 12 ...... 12.70 1,250 12...... 19.75 4,300 May 31 May 13 April 22 21.48 9,680 16.40 2,190 12m .... 21.35 8,490 20.50 5,190 18.10 2,920 21.59 10, 900 6 ...... 21.08 6 ...... 19.60 4,150 12 . 21.58 10, 700 9 .__. 21.55 8,350 8.. -.___...... 20.20 4,830 12m...... 21.93 11,900 10 20.70 5,560 3p.m... .. 22.12 14,100 12m. -,..._.. 21.07 6,230 7 22.18 21.45 8,210 21.57 10,600 12...... 22.13 14,200 4...... 21.85 12, 200 4 ...... 21.60 11,000 22.12 16,000 22.03 16, 800 April 23 22.27 18, 300 8 22.14 18, 400 12 ...... 22.48 21,200 10 22.15 18,500 22.07 1Q Kf\f\ 12 22.13 18, 300 12p.m...... 22.48 June 2 April 24 12m...... 22.95 27,400 23.02 28, 300 5:30 p.m.._ ... 22.05 17, 100 6a.m...... 22.72 22,400 12 ...... 22.90 26, 900 12 21.92 15, 000 12m. __ .... 23.10 23.35 on Qftn 12- _ ...... 23.25 14.62 1,660 12m.. _ .... 21.47 9,590 April US 21.35 8,490 8 ...... 21.31 8,210 23.02 9fi 9fift 12 , 21.40 8,940 12m... __ . 23.12 16.08 2 080 10 p.m...... 23.50 31,500 9...... 2,240 12...... 23.50 Qi KfiA 1C 1C 2,950 4,520 21.78 13, 100 April H6 4...... 20.60 5,600 12m...... 22.10 17,900 6 ...... 21.00 6,410 22. 38 21, 800 9 a.m...... 23.23 23,500 21.33 8,350 12 22.80 27,400 12m ...... 23.20 19 91 7>5 19 7ftft 22.94 f)K Ofifl 12...... __ .. oc onn 23.12 31, 500 April 27 22 09 17,600 11.... ___ - 23.23 32,700 12m...... 22.35 21,400 1 p.m...... 23.23 32, 700 9a.m...... 23. 51 31,600 22.52 23,700 3...... 23.22 32,600 12m.. _ . 23.60 99 1515 24 200 12 22 99 29,800 3 p.m...... 23.63 32,900 12...... 22.53 23,800

20. TEXARKANA RESERVOIR NEAR TEXARKANA, TEX. Location. Lat 33°18'16", long 94°09'38", at Texarkana Dam on Sulphur River, 10 miles southwest of Texarkana, Bowie County, and at mile 44.5. Drainage area. 3,443 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is at mean sea level, datum of 1941. Maxima. April-June 1957: Contents, 1,698,000 acre-ft 7 p.m. June 12 (eleva­ tion, 250.34ft). TEXAS AND ADJACENT STATES B39

Remarks. Reservoir is formed by a rolled-fill earth dam with an uncontrolled concrete spillway and two controlled outlet conduits near south abutment. Storage began June 27, 1956. Reservoir capacity, 2,654,000 acre-ft at eleva­ tion 220.0 ft. Records furnished by U.S. Army Corps of Engineers.

Contents, in acre-feet, at 7 a.m. of indicated day, 1957

Day April May June Day April May June

I...... 350, 600 781, 000 1,355,000 16. 458, 600 889, 100 1,659,000 2...----.-..--.-.. 353, SCO 862, 100 1,390,000 17 436,900 911,600 1,641,000 3 354, 300 912, 800 1, 40f, 000 18 414, 300 968, 300 1, 616, 000 4 3«0, 800 939, 900 1,423,000 19 . 388, 700 1,021,000 1,577,000 5 .. 390, 400 951,000 1,446,000 20 362, 600 1,053,000 1,543,000 6 . . _ __ 420,000 948,500 1,478,000 21 . 342, 800 1,073,000 1,509,000 7...... 455, 900 936, 200 1,514,000 22 . .___----_--. 328, 400 1,081,000 1,472,000 8.... . - --.- 4(48,900 939, 900 1, 575, 000 23, - 316, 600 1,084,000 1,457,000 9-.--_ __ 514, 300 942, 400 1, 634, 000 24. 314, 400 1,089,000 1,426,000 10 528, 900 938, 700 1,671,000 25 ------317,600 1, 061, 000 1,387,000 11 ...... 532, 800 935,000 1,690,000 9fi 322, 400 1, 035, 000 1,353,000 12 --.--.-.--. 526, 300 925, 800 1,698,000 97 357, 700 1,C36,000 1,318,000 13 ------515, 100 914,600 1,697,000 28, - 444, 800 1,075,000 1,284,000 14 500, 100 907, 500 1,690,000 29, 569, 400 1,145,000 1,250,000 15 -.- - . . 484, 800 898, 600 1,677,000 30. ------681, 100 1,232,000 1, 213, 000 31 1,306,000 Change in acre-fe ;t_ +343, 300 +624, 900 -93, 000

21. SULPHUR RIVER BELOW TEXARKANA RESERVOIR NEAR TEXARKANA, TEX. Location. Lat 33° 18'17", long 94°09'06", at downstream side of bridge on U.S. Highway 59, 2,000 ft downstream from Texarkana Reservoir, 10 miles southwest of Texarkana, and at mile 44.2 Drainage area. 3,443 sq mi, part above Texarkana Reservoir. Gage-height record. Water-stage recorder graph. Datum of gage is at mean sea level. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 25,700 cfs 7 p.m. May 25; elevation, 216.06 ft 7 a.m. May 6. Remarks. Discharge regulated by Texarkana Reservoir since June 27, 1956. Records furnished by U.S. Army Corps of Engineers.

Mean discharge, in cubic feet per second, for the @4 hours ending at 7 a.m. of indicated day, 1957

Day April May June Day April May June Day April May June

1 7,390 21,500 10,500 11 15,500 9,380 10,800 21 13,800 9,940 20,500 2...... 7,810 22, 600 14,600 12 16,000 9,380 10, 200 22 . 11,900 9,940 20,500 3...... 8,330 23, 100 12, 200 13. _ . 16,000 9,660 10,200 23 10, 200 10,200 20, 500 4 9,380 23,100 11, 200 14 15,500 10,500 10,200 24 10,200 13, 000 20,500 5 11,900 23,100 11,500 15 15,500 10,800 10, 800 25.. _ 11,500 21,000 19, 900 6 . 13,800 22,600 11,900 16 .. 15, 100 10,500 10,800 26 11,900 25,700 19,900 7 . 14, 200 22,000 11,500 17-.--, 13,400 10, 800 10,800 27 13, 800 24,200 19,400 8 15, 100 15, 100 11, 500 18 12,600 10, 200 13, 800 28 16,400 16,000 18,900 9 15,100 10,800 11,200 19 13, 000 9,940 18, 400 29 . 14, 600 11,200 18,900 10 15,500 10, 500 11,200 20 14, 200 9,940 19,900 30. 16, 400 10, 200 19,900 01 10,500

Monthly mean c ischarge, in cubic feet per 13, 200 14,750 14, 740 Runoff, in acre-f jet 785, 500 907, 200 876, 900 B40 FLOODS OF 1957

22. POSTEN BAYOU NEAR WARDVIEW, LA. Location. Lat 33°00'25", long 93°46'30", in NE#NE# sec. 11, T. 23 N., R.-14 W., at bridge on parish road, 3 miles northeast of Wardview. Gage-height record. Water-stage recorder graph. Datum of gage is mean sea level (levels by U.S. Army Corps of Engineers). Maxima. April-June 1957: Elevation, 196.70 ft 9 a.m. Apr. 28. 1956 to March 1957: Elevation, 194.02 ft Feb. 2, 1957. Remarks. Records furnished by U.S. Army Corps of Engineers.

Elevation, in feet, at 8 a.m. of indicated day 1957

Day April May June Day April May June Day April May June

1 192.1 195.7 190.4 11 186.7 21 185.8 185.9 186.9 2 192.6 195.1 191.2 12 186.4 189.6 193.2 22.. _ 185.8 185.8 186.4 3 . 191.0 194.8 193.4 13 186.2 187.9 193.2 23.___- 185.9 185.8 186.1 4. _ ... 195.4 194.4 194.0 14..... 189.2 192.6 24 188.9 190.8 186.4 5 195.6 194.0 194.2 15. . 184.9 190.3 191.9 25 192.5 191.2 186.7 6...... 194.1 193.3 193.8 16 184.9 188.4 191.0 26 193.0 190.6 186.3 7...... _ 192.5 192.8 192.7 17- 184.8 187.6 189.2 27 194.3 192.7 186.1 8 . 190.3 192.4 191.7 18 187.7 187.8 28 196.6 191.5 185.9 9 . 187.8 192.0 192.1 19 185.8 187.0 186.8 29 196.6 190.0 185.8 10 ... 187.0 191.5 192.0 20 185.7 186. 1 186.2 30 195.8 190.2 185.7 31 190.5

23. CYPRESS CREEK NEAR JEFFERSON, TEX. Location. Lat 32°45', long 94°29', at bridge on Farm Road 726, 1,500 ft down­ stream from Lake O' the Pines Dam, 8 miles west of Jefferson, Marion County, and 14 miles upstream from Black Cypress Creek. Drainage area. 850 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is at mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 16,000 cfs Apr. 27 (gage height, 205.61 ft). 1924 to March 1957: Discharge, 57,100 cfs Apr. 1, 1945 (gage height, 28.78 ft at site 1,500 ft upstream and at datum then in use), from rating curve extended above 29,000 cfs. Maximum stage known since at least 1853, that of Apr. 1, 1945. Remarks. No regulation by dams upstream during April-June 1957.

Mean discharge, in cubic feet per second, for the 24 hours ending at 7 a.m. of indicated day, 1957

Day April May June Day April May June Day April May June

1 990 13, 300 5,460 11 1,390 1,690 4,190 21 950 835 188 2 1,090 11,200 6,000 12 _. 1,590 1,550 3,240 22 1,140 892 160 3 .... 1,090 8,050 4,690 13 1,690 1,410 2,520 23 1,590 911 370 4 1,070 5,280 3,490 14 1,650 1,310 2,080 24 2,130 970 435 5 1,070 3, 850 2,930 15 1,520 1,140 1,760 25 3,400 970 435 6___ ... 1,090 3,080 2,860 16 1,310 873 1,490 26. . 7,100 817 520 7.-.- ... 1,050 2,580 2,710 17 970 728 1,200 27- 10, 900 911 781 8 1,010 2,290 3,760 18 677 694 817 28 15, 600 1,090 1,090 9 . 1,030 2,030 5,820 19 835 728 435 29 _-_- 13, 700 1,240 1,310 10 1,160 1,800 5,640 20 1,030 781 251 30 13, 700 1,390 1,360 31 2,400

Monthly mean d ischarge, in cubic feet per 3,117 2,477 2,266 Runoff, in acre-f >et 185, 500 152, 300 134, 900 TEXAS AND ADJACENT STATES B41

24. CADDO LAKE NEAR MOORINGSPORT, LA. Location. Lat 32°42'15", long 93°55'11" in SE^SEK sec. 21, T. 20 N., R. 15 W., at south end of dam on Cypress Creek, 0.3 mile upstream from confluence with Black Bayou and 3 miles northeast of Mooringsport. Drainage area. 2,744 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 164.54 ft above mean sea level (levels by U.S. Army Corps of Engineers). Maxima. April-June 1957: Contents, 600,700 acre-ft May 4 (gage-height, 14.4ft). 1921 to March 1957: Contents observed, 745,500 acre-ft Apr. 5, 1945 (gage- height, 17.3 ft). Remarks. Lake is formed by gravity-type concrete and earth dam. An uncon­ trolled concrete spillway is at gage height, 3.86 ft (capacity, 170,000 acre-ft). The dam is submerged at flood stage. Records furnished by U.S. Army Corps of Engineers.

Gage height, in feet, and contents in acre-feet, at 8 a.m. of indicated day, 1957

AI>ril May June Day Gage Contents Gage Contents Gage Contents height height height

1 __ . .. .. 5.0 209, 300 13.1 540, 600 4.7 198, 700 2...... _ --..--. ... 5.0 10 0 K79 oftft A Q 3 ...... 5.0 209, 300 U o A. Q 4 ...... 5.1 919 Hftft 14.4 600, 700 5.1 212, 800 5 5 A OOQ 4ftn 14.3 KQC inn 5.4 990 A(\[\ 6 . . ..._ 5.1 212, 800 14.0 582, 100 5.6 230,600 7..-...... K ft OftK Oftft 13.6 563, 500 5 7 904. Qftn 8 ...... 5.3 13.2 RAK Oftft K Q 241, 800 9,_ ...... ___ ...... 5.0 12.7 6.1 249,200 10...... 5.0 209, 300 12.2 500, 100 6.1 249,200 11 ...... _ ---.. _ ..---... 5.0 11.7 6.6 268, 000 12 4.9 n o 456, 100 6.8 275, 700 13 ._ ...... 4.9 205, 800 10.7 434, 500 7.0 283, 400 14 4.9 205, 800 10.4 421, 700 7.0 283, 400 15 4.9 205, 800 9 Q 400, 600 6 Q 279, 600 16 4.9 205, 800 9.4 379, 700 6.8 275, 700 17 8 Q 6.5 264, 100 18 202, 300 8.4 338, 700 6.3 256, 700 19. _ ...... 4.8 202, 300 8.0 322, 800 5.9 241,800 20 4.7 7 5 306, 800 5.6 230, 600 21 4.9 205, 800 7.1 287, 300 5.3 219, 900 22 . A 0 9ft9 °.ftft 6.6 5.1 212, 800 23 4.8 202, 300 6.2 252, 900 5.0 209, 300 24 5.1 212, 800 5.8 238, 100 5.0 209, 300 25 5.3 5 C 4.9 205, 800 26 5.4 223, 400 5.3 219, 900 4.8 202, 300 27.. ___ 6.1 249, 200 5.2 216, 300 4.7 198, 700 28...------. -_-.. _ - 8.3 334, 700 5.0 209, 300 4.8 202, 300 29 10.4 421, 700 4.9 205, 800 4.8 202, 300 30 ... 12.0 491, 200 4.8 202, 300 4.8 202, 300 31 . 4.8 202, 300 Change in contents, acre-feet.. +281, 900 ...... -288, 900 ...... 0

25. KELLY BAYOU NEAR HOSSTON, LA. Location. Lat 32°51'25", long 93°52'20", in SW^NEK sec. 36, T. 22 N., R. 15 W., near center of span on downstream iside of bridge on U.S. Highway 71, 0.4 mile downstream from Willow Lake lateral, 2.0 miles south of Hosston, and 2.7 miles upstream from mouth. 656087 O 62 4 B42 FLOODS OF 1957

Drainage area. 116 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 165.53 ft above mean sea level datum of 1929, supplementary adjustment of 1941. Discharge record. Slope-stage discharge relation defined by current-meter measurements. Discharge Apr. 1-11, 24-30, May 1-19, 24-28, June 1-21 computed by use of fall as determined from auxiliary recorder. Discharge for period of indefinite stage-discharge relation May 20-23 computed on basis of records for adjacent periods and records for nearby stations. Maxima. April-June 1957: Discharge, 1,720 cfs 6-11 a.m. Apr. 29; gage height, 17.23 ft 4 p.m. Apr. 29. 1944 to March 1957: Discharge, 1,800 cfs Mar. 3, 1945; gage height, 16.23 ft Apr. 5, 1945. Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

I.. .. _ 351 1,310 54 11 94 10 166 21 40 7.0 38 2...... 253 984 236 12 . 76 19 93 22 52 6.0 40 3 . 418 688 318 13 58 17 72 23 175 5.0 28 4 795 429 355 14 50 203 61 24 ..... 472 28 33 5 734 243 866 15 48 265 45 25 766 56 40 6 ...... 653 179 845 16 47 30 25 26.. 520 80 36 7 505 74 760 17 46 13 21 27 1,210 156 26 8...... 338 55 622 18 46 8.2 18 28.. _ 1,610 145 21 9 198 18 414 19 42 11 9.3 29. 1,700 92 18 10 126 6.4 260 20 40 9.0 14 30 . 1,490 56 16 31. 40

Monthly mean d ischarge, in cubic feet per 432 169 185 Runoff, in acre-fc et 25, 690 10,400 11, 010

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 2S April 25 April 27 Con. 6 a.m ___ 3.91 78 10.68 12m-. 14.00 1,330 12m-- 4.13 88 11.00 070 14.39 1,400 1 p.m...... 4.18 91 6 ...... 11.12 884 14.68 1,460 2 _ . ___ ... 4.40 104 11.10 3...... 14.89 1,500 3...... 5.00 142 12 m...... 10.86 7QQ 4 15.07 1,520 4.-. .... 5.63 186 10 49 710 8 15.26 1,510 5 6.20 229 8 ... 10.15 654 15.41 1,520 6 6.60 269 9 88 598 7.. ___ ..... 6.93 308 April 88 8 7.25 351 April 86 9 7.53 392 15.77 1,560 10. 7.80 435 9 E7 12m 16.12 1,610 11- . 8.01 4.79 12m-._ _ 9.33 enc 16.47 1,650 12 . 8.17 9 1 K 476 16.78 1,690 9 9.08 457 April 24 10 9.30 489 April S9 11 9.60 536 2 a.m ...... 8.36 518 12- ..- 603 17.01 1,710 3 _ 8.37 518 6 17.05 1,720 4... 8.36 A/r)r4J &? 11 17.18 1,720 5 . 8.34 KflC 12m-. 17.19 1,710 6 8.30 495 10.27 CQ1 17.23 1,690 9. .. 8.09 452 10.58 634 12- . . 17.17 1,640 12m . 7.84 407 3- 10.78 661 7.57 365 4 ...... 11.06 777 Jufic 1 6 _ 7.32 331 5 11.50 859 7. - . 7.78 393 6 - 11.98 953 2,72 36 8 8.53 en? 1,040 6 2.64 33 9 9.03 582 19 on 1,120 8 2.62 33 10 . 9.41 637 g 1,180 9 3.37 57 11 .. 9.81 698 10 - 1 Q O7 1 230 10 3.74 72 12 ...... 10.18 754 11 13.58 L240 11.. ___ . 3.81 74 TEXAS AND ADJACENT STATES B43

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height

June 1 Con. June 2 Con. June 5 12m... . . 3.70 70 7 07 1,070 3.30 10 7.56 318 4...... 12. 59 1,030 3.21 50 12 ...... 7.57 313 6 12.43 975 3.17 49 11.83 833 6 ...... 3.18 49 11.30 728 8 ...... 3.42 CQ 8 ...... 11.30 732 10 3.86 76 12 m...... 7.38 324 10 11.39 758 12 4.39 7.37 310 12 11 48 783 June 2 June 4 June 6 4.83 12 m...... 7.26 289 11.78 847 4 - 5.27 160 7.14 272 12m... 11.90 871 6 5.64 187 8 ...... 7.10 266 11.91 870 8...... 5.93 90S Q 8.50 422 11.90 867 10 6.19 228 10 10.50 720 6. 11.89 856 12m ...... 6.37 245 11 11.63 926 12...-... . 11.81 826 6 p.m...... 6.67 277 12 __ ..... 12.12 1,000

26. BLACK BAYOU NEAR GILLIAM, LA. Location. Lat 32°48'55", long 93°52'15", in SE^NW^ sec. 13, T. 21 N., R. 15 W., near left bank on downstream side of bridge on State Highway 170, 0.2 mile downstream from Red Bayou and 2 miles southwest of Gilliam. Drainage area. 364 sq mi. Gage-height record. Water stage-recorder graph. Datum of gage is 155.59 ft above mean sea level datum of 1929, supplementary adjustment of 1941. Discharge record. Slope-stage discharge relation defined by current-meter measurements. Discharge computed by use of fall as determined from auxil­ iary recorder. Discharge for periods of indefinite stage-discharge relation May 19-22, June 23 computed on basis of records for adjacent periods and records for nearby stations. Maxima. April-June 1957: Discharge, 8,200 cfs 12 m. Apr. 29; gage height, 23.32 ft 4 a.m. to 4 p.m. May 3. 1942 to March 1957: Discharge, 6,270 cfs May 4, 1944; gage height, 25.73 ft Apr. 5, 1945.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 ___ . 880 5,860 426 11- 1,130 107 1,560 21 239 70 121 2 925 4,410 6EO 19 815 98 1,080 22 261 60 139 3 1,120 3,270 997 13 668 91 686 23 478 48 150 4...... 2,030 1,920 1,280 14 529 930 492 24 1,020 91 149 5 2,280 1,120 3,510 15 . 412 258 317 25 1,940 -211 111 6 2,820 736 3,020 16 357 156 266 26 1,750 320 132 7 . 2,920 421 3,160 17 . 310 71 101 27 3,980 480 142 8 2,630 260 3,350 18 284 135 48 28 6,710 491 166 9 2,040 242 2,800 19 255 100 45 29 . 7,980 411 173 10 1,500 229 2,140 20 241 80 42 30 7,150 292 175 O1 157

M onthly mean c ischarge, in cubic feet per seond 1,858 746 914 Runoff, in acre-fcjet 110, 500 45. 880 54,400 Runoff, in inches 5.69 2.36 2.80 B44 FLOODS OF'1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 28 April 27 Con. June 1 Con. 6 a.m ...... 7.18 324 15.47 2,110 10.22 517 12m. __ ... 7.38 3...... 15.66 2 290 5. 10.23 1 p.m...... 7.42 330 4 ... 2,450 6 . 10.24 493 2 ...... 345 5 16.10 9 Ann 10.25 493 3...... 7.70 368 6 ...... 2,750 10 10.25 473 4...... 8.00 446 7 16.55 12 10.30 5...... 8.40 575 16.80 3,100 6 ...... 8.82 700 Q 17.00 3 9.10 7. --...... 9.11 762 10 17 OQ 3,460 8. ___ .. __ . 9.36 807 11 17.55 3,740 10.31 524 9...... 9.60 12m 10.37 521 10...... 9 QQ QQO 4,320 6. - 10.45 558 11 .-.-... . 10.06 QO1 10 At) 4 600 10.52 575 12 10.24 QCQ 18.63 10 10.61 612 4 ...... ift sn 4 960 12m... .. 10.67 626 April 24 5,580 10.93 673 12 19.63 5,800 8 11.20 794 10. 57 1,000 10 11.50 885 3...... 10.68 974 April 28 11.75 962 4 in £3 QfiC 5..-. _ ...... 10.91 938 20.10 6,320 6 11.07 12m...... 20.50 6,700 9...... 11 34 994 on on 7,140 12m-- . 12.22 978 12m...... 11,54 QQ7 12 21.32 7,570 12.63 1,070 3 p.m...... 11.67 6 11.74 Qo£» April 29 7 11.77 959 11 92 1,030 21.70 7 Qfcfl 12 m-.- 12. 85 1,020 9... _ . _ ... 12.14 1,080 11 8 1AO 12.96 1,050 10...... 12.43 1,170 99 flfl 8,200 8.. - 13.02 1,050 11...... _ ... 12.74 1,270 2° 03 8,170 9 13.91 1,910 12 13.20 1,570 22.08 Q 1 K fl 10-. 15.00 2,790 3...... 22.12 ft ftfcfl 11 15.60 3,060 April 25 22.15 12 16.10 3,270 5 ..... 22.18 8,020 2a.m_.__ ..... 13.77 1,810 6 22.23 8,080 4 14.13 1 QAA 12 99 Ar\ 7 onn 6 - 14.43 1 QQA 16.85 3,650 14.64 f) AQ/\ 4 17.18 3,790 12m.... 14 90 6 17.34 3,830 14 97 2 ftfifi 22.43 7 ft7rt 8 ... 17.38 3,750 4 14.98 o (\f\f\ 99 4.1 7 860 10. - 17.37 3,680 6 . 14 97 1 940 3...... 22.47 7,780 12m--. 17.34 3,610 8 1 880 4 7,730 17.14 3,310 12 - 14.98 1,870 22.50 7,620 8 17.08 3,220 6 ...... 22.52 7 600 10 17.03 3,130 April 26 22.58 7,140 12 . 17.00 3,080 22.64 6,610 14 93 1 7QA 12 6,560 12 m.. ------14.88 1,680 U QQ 1 640 17.03 3,020 15. 00 1,760 12m-. 17.12 3,000 10 15.09 1,840 9 71 909 17.15 3,000 11. ------15.19 1,920 9 71 303 4. ----- 17.18 2,990 15.28 I QQrt 9 QA 392 6 17.22 3,020 10 9.86 A(\A 12-- . 17.32 3,030 April 27 11 10.02 515 12m...... 10.11 545 15.37 2 040 10.21 534

27. TWEL.VEMILB BAYOTJ NEAR DIXIE, LA. Location. Lat 32°38'45", long 93°52'40", in NWtfNWtf sec. 14, T. 19 N., R. 15 W., near right bank on downstream side of pier of bridge on State Highway 173, 0.1 mile downstream from Cottonmouth Bayou, 4.2 miles southwest of Dixie, 5.5 milep downstream from Caddo Lake, and 17.3 miles upstream from mouth. Drainage area. 3,137 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 143.88 ft above mean sea level datum of 1929, supplementary adjustment of 1941. TEXAS AND ADJACENT STATES B45

Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Discharge Apr. 4 to June 30 computed by use of submergence as determined from auxiliary gage as a factor. Maxima. April-June 1957: Discharge, 26,100 cfs 1 a.m. to 4 p.m. May 4 (gage height, 32.59ft). 1942 to March 1957: Discharge, 34,900 cfs Apr. 5, 1945 (gage height, 35.65 ft). Remarks. Flood discharge affected by temporary storage in Caddo Lake (see p. 41). Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 . 4,880 22, 100 3,080 11 5,440 18,900 8,380 21..... 3,220 11, 000 7,850 2...... - 4,940 24, 300 3,440 12 4,920 17,900 8,830 22 3,300 10, 300 6,730 3 .. 4,950 25, 700 4,320 13 4,690 17, 100 9,690 23 3,630 9,620 5,430 4___ . 6,060 26, 000 4,810 14 - 4,430 16,300 9,780 24..... 4,860 9,020 4,860 5 . 6,450 25,300 6,330 15 4,190 15, 400 10, 000 25 6,210 8,350 4,450 6 6,260 24,700 7,660 16____. 4,000 14,400 10, 100 26..... 7,040 7,620 4,010 7 6,240 23,200 8,040 17 3,750 13,500 9,940 27 8,820 6,680 3,590 8 6,530 21, 900 8,130 18 3,560 12, 700 9,730 28 11, 700 5,650 3,630 9 6,260 20,900 7,870 19 3,240 12,200 9,180 29 15, 300 4,480 3,600 10 5,880 19,800 8,340 20 3,080 11,600 8,650 SO ­ 19, 300 3,320 3,530 SI 2,720

Monthly mean d ischarge, in cubic feet per 6,104 14, 920 6,799 Runoff, in acre-f Bet 363, 200 917, 700 404, 600 Runoff, in inche 3 ______2.18 5.49 2.42

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 23 April 28 Con. April 30 12.86 3,490 on fjfi 18,500 12m... .. 13.00 3,550 20.77 7,020 12m...... 30.08 19,400 13.03 3,560 21.12 7,250 30.43 20, 100 6...... 13.49 3,760 12...... 21.44 7,440 12 30.76 20,900 9...... 13.78 3,870 12...... 14.45 4,150 AprU 27 91 art 7,710 31.30 22,100 8 ...... 99 p;n 8,310 31.70 23,300 2a.m.-...... 14.90 4,340 12m...... 23.08 8,850 6...... 15.58 4,610 23.60 9,360 May % 10...... 16.10 4,840 8 ______... 24.06 9,820 2p.m...... 16.49 4,980 12 24.47 10,300 12m...... 32.06 24,400 6...... 16.76 5,070 12p.m... _ 32.28 25,100 12...... 17.87 5,510 MayS April %5 25.09 10,900 12m--. 25.188 11,700 12m 32.50 25,800 18.50 5,810 26.28 12,400 12 p.m...... 32.58 26,000 8...... 19.00 6,070 12 26.85 13,300 12m...... 19.43 6,300 19.71 6,440 8.. ___ ...... 19.93 6,560 32.59 26, 100 12...... 20.17 6,670 27.48 14,300 32.59 26, 100 12m...... 28.08 15,200 5 _ .. 32.59 26, 000 28 64 16,300 6 32.59 26,000 12 17,500 8...... 32.58 25,900 20.48 6,850 12 32.56 25,900 B46 FLOODS OF 1957

28. PAW PAW BAYOU NEAR GREENWOOD, LA. Location. Lat 32°31'00", long 93°58'20", in SE% sec. 26, T. 18 N., R. 16 W., near center of span on downstream side of bridge on State Highway 169, 1 mile upstream from Cross Lake, 5.1 miles north of Greenwood, and 11 miles west of Shreveport. Drainage area. 78 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 170.35 ft above mean sea level (Louisiana Geodetic Survey bench mark). Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 3,750 cfs 5-6 a.m. Apr. 28 (gage height, 11.24ft). 1955 to March 1957: Discharge, 2,820 cfs May 2, 1956 (gage height, 10.75 ft).

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 - 644 914 34 11 14 8.3 8.9 21 12 5.2 8.8 2 743 1,050 52 12--.-. 12 7.3 6.8 22 22 4.1 3.8 3 ... 442 621 322 13.^- 10 6.6 19 23 67 3.3 3.3 4 398 265 623 14 . 9.1 74 47 24 374 4.2 14 5 ... 515 56 610 15 8.6 266 16 25 1,380 5.0 16 6 ... 288 27 518 16.--. 9.4 87 6.8 26. - 1,190 65 6.2 7 57 19 166 17 12 20 4.2 27- 1,930 313 3.2 8 32 14 31 18 17 11 3.0 28 2,640 240 2.4 9 23 12 21 19 15 7.9 19 29 976 30 1.9 10- . 18 10 14 20 . 12 6.3 34 SO ­ 649 13 1.6 SI .. 8.3

Monthly mean d ischarge, in cubic feet per ; jecond 417 135 87.2 Runoff, in acre-ft et 24,830 8,280 5,190 Runoff, in inches 5.97 1.99 1.25 TEXAS AND ADJACENT STATES B47

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 23 April US Con. April SO 3.13 28 8.92 698 12m...... 3.20 30 10.02 1,610 12m. ____ . 8.72 623 3.32 33 9.. _ ...... 10.00 1,580 8.61 577 3.53 38 10 10.00 1,580 12...... 8.75 632 3. 3 79 46 12 9.98 1,560 4. 4.20 63 Mot 1 4.70 82 April 86 6 5.20 101 8.85 666 T...... 122 9.87 1,400 6 ... 9.08 766 5.77 143 9.62 1,110 9 ... 9.12 785 Q *, QQ 159 9.48 988 12m...... 9,15 800 10 6.17 173 12 9.42 950 9.35 910 11. . 6 34 186 6 1,240 10 6 AQ 1QQ April 27 7 ...... 9.78 1,280 8 9.79 1,290 AnviJ 9t 9.41 944 9...... 9 7Q 1,280 4 9.39 932 11 9.74 1,230 6.77 228 6...... 9.40 938 12 9.73 1,220 4_. _.__ . _... *7 Aft 260 8---- 9.48 988 6. 7.28 292 10 9.58 1,080 May 2 7.41 311 12m... 10.00 1,580 10 7.51 328 10.38 2,160 9 7n 1,190 12 m...... 7.61 QJO 10.67 2,670 12m...... 1,040 7.70 358 6 ...... 10.83 2,960 9.41 944 4 7 Q3 386 8 10.98 3,250 19 9 94. 845 6 7.98 416 10 11.11 3,310 8 __ .. 8.23 473 12 11.18 3,630 10 8.62 580 12 _ .. 9.19 820 April 28 8.98 722 8.62 580 April 25 11.19 3,650 8 4K 530 2 11.21 3,690 19 8 15 457 9.43 956 3 11.22 3,710 9 ft1 1,100 5 ... 11.24 3,750 3. . 9 74. 1,230 6 11.24 3,750 4 .... 9 QQ 1,330 7 ... 11.22 3,710 7 OQ 418 9 CO 1,410 8 11.17 3,610 6 7.78 376 6 9.90 1,440 9...... 11.10 3,480 9 ...... 7.46 320 8_ 9.90 1,440 10 11.02 3,330 12 m...... 7.00 253 9 9 QO 1,410 11...... 10.90 3,100 6.49 200 10 9 OR 1,350 10.81 2,930 6 _ .... 5.97 158 11... _____ 9.83 1,330 10.24 1,930 9 ...... 5.47 121 12m ...... 9.82 1,320 12 9.80 1,300 12 .. 5.07 95 9.80 1,300 9 sn 1,300 April 29 3 ...... 9.81 1,310 4.... __ .... 9 87 1 400 9.60 1,090 4.50 66 5 _____ . ... 9.95 1,520 12m.. 9.40 938 12m ____ 4.10 53 6 ..... 10.00 1,580 9.24 845 3.77 42 7 __ ... 10.03 1,620 12 _ ...... 9.08 766 19 3.51 35 B48 FLOODS OF 1957

29. RED RIVER AT SHREVEPORT, LA. Location. Lat 32°30'55", long 93°44'25" in SE#SE# sec. 30, T. 18 N., R. 13 W., on second pier from east bank, at Illinois Central Railroad bridge at Shreve- port, half a mile downstream from Cross Bayou. Drainage area. 60,613 sq mi, of which 5,936 sq mi above Denison Dam is non- contributing. Gage-height record. Water-stage recorder graph except Apr. 7-18, 26-30, for which graphs were drawn on basis of daily gage readings. Datum of gage is 131.48 ft above mean sea level datum of 1929, supplementary adjustment of 1941 (levels by U.S. Army Corps of Engineers). Discharge record. Stage-discharge relation denned by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 230,000 cfs May 3; gage height observed, 33.91 ft May 4. 1928 to March 1957: Discharge, 303,000 cfs Apr. 5, 1945; gage height, 37.9 ft in gage well, 38.4 ft from outside gage, Apr. 7, 1945. Maximum stage known, 45.9 ft in August 1849. Remarks. Some regulation by Lake Texoma (see p. 32) and by Texarkana Reservoir (see p. 38). Records computed by the U.S. Army Corps of Engi­ neers and reviewed by the U.S. Geological Survey.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1. .... 47, 500 194,000 157,000 11. 95, 500 162, 000 213, 000 21 38,800 100, 000 108, 000 2 52, 700 216, 000 147, 000 12... 85. 100 145, 000 199, 000 22 40, 500 99,EOO 100,000 3 ..... 55, 300 228, 000 142,000 13 76, 300 131, 000 188,000 23 42,800 104,000 95,500 4 ..... 67, 200 226, 000 1JO, 000 14 ... 68, 600 126, 000 183,000 24 65,800 108, 000 93,700 5 85, 100 220,000 1EO, 000 15 60,200 121, 000 171. 000 25 90, 800 114, 000 92,900 6 - 95. 900 213,000 157,000 16 52, 200 121, 000 157, 000 26 104, 000 127,000 88,200 7 _ 102, 000 210, 000 165,000 17-- 45, SOO 127, 000 141, 000 27 122. 000 135, 000 85, 900 8 105, 000 204, 000 173, 000 18 40,000 128, 000 130, 000 28 142,000 144, 000 86,800 9 ..... 106, 000 195, 000 198, 000 19 34, 000 119,000 122, 000 29 154, 000 155,000 86, 800 10- 104, 000 180,000 201, 000 20 33, 500 108, 000 114,000 30 168, 000 166, 000 86,800 31 173, 000

79, 340 154, 800 139, 400 Runoff, in thousands of a 4,721 9,520 8,296

30. BAYOU DORCHEAT NEAR MINDEN, LA. Location. Lat 32°35'55", long 93°20'00", in NW% sec. 31, T. 19 N., R. 9W., at bridge on U.S. Highway 80, 3 miles west of Minden. Drainage area. 1,097 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 133.75 ft above mean sea level, datum of 1929 (levels by U.S. Army Corps of Engineers). Discharge record. Stage-discharge relation denned by current-meter measure­ ments. Stage-discharge relation indefinite May 7 to June 4, June 7-23; dis­ charge estimated on the basis of three discharge measurements and of weather records and records for nearby stations. Maxima. April-June 1957: Discharge, 23,100 cfs 12 m. May 2 (gage height, 22.12ft). 1928-31, 1936 to March 1957: Discharge, 40,000 cfs May 21, 1930 (gage height, 22.95 ft), from rating curve extended above 30,000 cfs. TEXAS AND ADJACENT STATES B49

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 2,440 20,100 600 11 10, 800 3,100 1,400 21 1,780 1,200 300 2 ... .. 2,640 22,900 700 12...-. 8,680 2,800 1,100 22 1, 5.50 1,000 300 3...... 2.770 21.100 1,000 13 6,940 2,500 900 23- 1,380 1,000 500 4 .... 3, 150 17,200 1,500 14 5,540 2,900 800 24 1,400 1,000 894 5_ .. 3,400 13,200 2,290 15..... 4,570 3,400 800 25 1,640 800 989 6 3,700 10,100 2,980 16 3,880 3,600 700 26 1,940 900 1,210 4,120 7,200 2,700 17 3,320 3,200 600 27- 2,380 1,200 1,560 8... . 5,300 5,300 2,200 18 2,830 2,600 400 28 3,280 1,300 1,860 9...... 9, 6fO 4,200 2,000 19 2,380 2,000 400 29 5,540 1,300 2,050 10 12,000 3,500 1,700 20 2,000 1,600 300 30 11, 500 1,000 2,120 31 800

Monthly mean c ischarge, in cubic feet per s 4,417 5, 290 1,228 Runofl, in acre-fc et 262,800 325,300 73, 100 Runoff, in inches 4.50 5.56 1.25

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April! April 12 Con. April SO Con.

13.95 4 ' 340 17.07 7 7^n 19. 33 11,700 4 ..... - 19.62 12,500 April IS 6 19.91 13,500 14.01 4,390 8 ...... 20.21 14,700 4 14.08 4 450 6,920 10 20.43 15,500 6 ... .-. 14.16 4,530 15.73 6,160 12-- -- 20.63 16,300 8 14.27 4,640 10 - .. 14.43 4,800 12 m- _ __ 14.65 5,020 2 p.m. __ 14.89 5,260 11.22 2,190 20.99 17,800 4 15.22 K fififi 8 - 21.30 19, 200 6 . 15.55 5,960 11.86 2,600 12 m. ------21.58 20,400 8 6,370 12 9 sin 21.78 21,400 10 . 16.31 6,820 8 ... 21.93 22,200 12 . 7 Ofifi 22.02 22,600 Apr tt 9 12.36 2,970 Mag % 8 12.55 3,120 2 a.m --- 17.05 7,720 12 m - .. 12.69 3,280 22.08 22,900 4 _ 17.38 8,150 3,390 8 22.11 23,000 6 17.68 8,570 8 ...... 13.15 3,620 12m. 22.12 23,100 8 ...... 17.95 8,980 12 13.49 3,920 22.10 23,000 10 9 QQA 22.06 22,800 12m- 18.41 9 7K(\ 12 21.98 22, 400 18.60 10,100 4 ...... 18.79 10, 500 13.70 4,110 MayS 6...... 18.94 10 800 8- ...... 19.07 6 . 14.15 4,520 21.80 21, 500 10 19.19 11, 300 8 -- 14.41 4,780 21.68 20, 900 12 . 19.28 11,600 10 U fiQ 5,060 12 21.34 19, 300 12' m .-_. .- 14.97 5,340 April 10 15.31 4 15.63 19.47 12, 100 6_ 15.98 6,440 12m 20.84 17,200 12 m 19.52 8. - 16.36 20.37 15, 300 6 p.m. ____ 19.51 12,200 10 16. 75 7,350 19.37 11 800 17.14 7,840 12m- 19.77 13,000 19.17 11,300 12m 18.95 10,800 17. 54 8,380 12 p.m _ .... 18.38 9,700 4 8,930 May 6 6 18.23 9,440 April 12 8- _ 18.45 9,820 12m.- _ _--_ 18.54 9,970 10 - 18.73 10,300 17.96 9,000 12m_ ___ , 17.73 8,640 12m.. 11,000 B50 FLOODS OF 1957

81. BAYOU BODCAU NEAR SAREPTA, LA. Location. Lat 32°54'15", long 93°28'55", in NWM sec. 15, T. 22 N., R. 11 W., on left bank on downstream side of bridge on State Highway 2, 2 miles west of Sarepta and 9.5 miles upstream from Caney Creek. Drainage area. 546 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 173.91 ft above mean sea level datum of 1929, supplementary adjustment of 1941 (levels by U.S. Army Corps of Engineers). Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Rate of change of stage used as a factor in discharge computations Apr. 4-9, 11-18, 26-30 and May 5-13, 26-29. Stage-discharge relation in­ definite due to backwater from flood-control dam June 6-19; discharge esti­ mated on basis of records of weather and records for nearby stations. Maxima. April-June 1957: Discharge, 8,890 cfs 7:00 p.m. Apr. 28; gage height, 20.48 ft Apr. 29. 1938 to March 1957: Discharge, 12,600 cfs July 6, 1940 (gage height, 22.16 ft). Flood of May 22, 23, 1930, exceeded 25 ft and flood of 1905 may have reached a stage of 27 ft; information from local residents. Remarks. Water used by the paper mill at Springhill is pumped from wells and discharged later as waste into the bayou approximately 8 miles above station. This discharge is not continuous but is stored in a reservoir and released when­ ever the flow of bayou is sufficient to dilute effluent from the mill.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 270 5,460 1,610 ll_ 4,680 2,170 1,300 21 1,470 682 233 2 360 5,500 1,760 12 3,900 1,790 1,100 22 1,570 586 193 3_ ._ 436 5,950 1,850 13 3,230 1,510 900 23 1,590 454 220 4______636 5,920 1,920 14 2,730 1,390 750 24 1,690 452 361 5 . . 1,690 5, 120 2,100 15 2,290 1,460 650 25 1,900 454 109 6 2,180 4, 240 2,100 16 1,920 1,660 550 26 2,160 817 113 7 2,450 3,570 2,100 17 1,590 1,660 450 27 3,180 1,620 198 8 3,320 3,060 1,900 18. 1,320 1,440 400 28 7,700 1,880 240 9 4,530 2,750 1,700 19 1,220 1,140 350 29 7,820 1,660 512 10 4,990 2,450 1,500 20 1,310 844 295 30 5,880 1,430 742 31 1,520

Monthly mean c ischarge, in cubic feet per s 2,667 2,279 940 Runoff, in acre-fe et 158,700 140, 100 55,950 TEXAS AND ADJACENT STATES B51

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 26 April 28 Con. May 26 Con. 12m...... 14.88 2,170 20.44 8,650 12p.m...... 7.93 507 12p.m_'_ _ 15.09 2,220 April 29 May 26 April V? 20.47 8,460 8.53 582 , 12m._ _ . ... 20.33 7,870 12m...... 10.19 804 g 6 p.m.__ __ . 20.10 7,320 6 p.m...... 11.20 1,010 12... _ ...... 19.80 6,610 12...... 12.12 1,240 16.23 3,420 8. 16.67 4,100 April SO May%7 12...... 17.32 4,780 19.51 6,160 12.98 1,480 12m.-_ 19.21 5,630 12m...... 13.57 1,670 April 28 18 Qfi 5,630 13.96 1,800 12 IS Q^ 12...... 14.24 1,860 18.06 6,200 8...... 18.86 7,410 May 25 12m...... 19.49 8,410 19.95 8,650 7.38 439 12m.- 14.46 1,900 7...... 20.22 8,890 12m_._ ... 7.39 441 12p.m.- ..... 14.35 1,860 8...... 20.28 8,840 7.56 461

32. BAYOU BODCAU RESERVOIR NEAR SHREVEPORT, LA. Location. Lat 32°42'07", long 93°30'39", in NW^NWK sec. 28, T. 20 N., R. 11 W., directly above control line of outlet structure, 2.1 miles northeast of Bellevue and 20 miles northe'ast of Shreveport. Drainage area. 683 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is at mean sea level (levels by U.S. Army Corps of Engineers). Maxima. April-June 1957: Contents, 129,800 acre-ft May 10 (elevation, 184.44 ft). 1949 to March 1957: Contents, 157,200 acre-ft May 26, 1953 (elevation, 187.01 ft). Remarks. Reservoir is formed by earth-fill dam with uncontrolled outlet works and spillway. The reservoir does not retain a permanent pool. Intake invert of outlet works at elevation 157.0 ft. Capacity, 967,900 acre-ft at crest of spillway (elevation, 219.0 ft). Outlet works completed Dec. 17, 1949. Reser­ voir built for flood control. Records furnished by U.S. Army Corps of Engineers. B52 FLOODS OF 1957

Elevation, in feet, and contents, in acre-feet, at 7 a.m., and mean discharge from reservoir, in cubic-feet per second, for 24 hours ending at 7 a.m. of indicated day, 1957

April May June Day Eleva­ Contents Dis­ Eleva­ Contents Dis­ Eleva­ Contents Dis­ tion charge tion charge tion charge

1 163. 23 3,960 558 179. 85 87, 730 2,390 178. 97 80, 610 2,330 2 163. 70 4,720 638 180.79 2, 460 178. 87 79 840 2 000 3 163 94 5,170 679 181. 69 103, 600 178. 74 78,830 9 ^10 4 _ .... 164. 37 6,050 767 182. 47 110, 700 2, 570 178. 78 79, 140 2,310 5 . 164. 63 6,620 821 183. 14 117,000 i!,620 179. 04 81, 160 2,330 6 .. -. .. . 164. 80 6,990 857 183. 70 122, 400 2, 660 179. 21 82, 540 2,340 7 165. 33 8,300 QQO 184.07 126, 000 2, 680 8 ...... 166.12 10, 480 1,110 184. 30 128, 400 2, 700 179. 29 82, 190 2,350 9 ...... 167. 11 13, 660 1,230 184.40 129, 400 2, 700 179. 30 83, 270 2,350 10 168. 27 17, 930 1,360 184.44 129, 800 2, 710 179. 28 83,110 2,350 11 169. 58 23, 340 1,500 184.40 129, 400 2, 700 179. 20 82, 460 2,340 12 171. 03 30,090 1,640 184. 29 128, 300 2, 700 179. 12 81,810 2,340 13 172. 26 OC Af\f\ 1 7^fl 184. 08 126, 100 2,680 179 08 81, 490 2,340 14 173. 05 40, 690 184.10 126, 300 2, 690 178.92 80,220 2,320 15 173. 54 43, 530 1,870 183. 87 124, 100 2, 670 178. 73 78, 760 2,310 16 m S7 45 440 1 QOfl 183. 60 121, 500 2,650 178. 52 77, 130 17 174. 00 1,920 183.33 118, 800 2,630 178. 29 75, 340 2,280 18 174. 01 46, 250 1,920 183.10 116, 600 2,620 178. 00 73, 120 2,260 19.. ..-. 173. 98 1,920 182. 81 113, 900 2,600 -177. 63 70, 410 2,220 20. 173. 78 44,920 1,900 182. 46 110, 600 2,570 177. 19 67, 190 2,190 21. 173. 62 43, 990 1,890 182. 01 106, 400 2,550 176. 65 63, 370 2,150 22 173. 43 49 SQO 1 S7fl 181. 55 102, 400 2,510 176. 10 59, 560 2,100 23 181. 03 97, 730 2,480 175. 51 55, 670 2,050 24 173. 30 42, 140 1,860 180. 70 94, 910 2,450 175. 05 52, 670 2,010 25 173. 42 42, 830 1,870 180. 23 90, 910 2,320 174. 60 49,880 1,970 26 173. 51 43, 350 1,880 179. 90 88, 140 2,400 174. 04 46,440 1,920 27 173. 79 44 970 1,900 179. 84 87, 650 2,390 173. 44 42, 950 1,870 28 175. 00 179. 70 86,520 2,380 172. 88 39, 750 1,820 29 176.90 65, 110 2,160 179. 60 85, 710 2 370 172. 29 36, 560 1,770 30 - 178. 59 77,680 2,300 179. 43 84,330 .2. 360 171. 72 33,580 1,720 31 179. 22 82,620 2.340 Change in contents, +74, 340 +4, 490 -49, 040

33. CYPRESS BAYOU NEAR BENTON, LA. Location Lat 32°42'20", long 93°41'15", sec. 23, T. 20 N., R. 13 W., near right bank on downstream side of bridge on State Highway 162, 2 miles up­ stream from Little Caney Bayou and 3 miles east of Benton. Drainage area. 91 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 165.98 ft above mean sea level, datum of 1929 (authority, U.S. Army Corps of Engineers). Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 8,130 cfs 2 p.m. Apr. 28 (gage height, 15.08ft). 1956 to March 1957: Discharge, 396 cfs Feb. 11, 1957 (gage height, 8.26 ft). TEXAS AND ADJACENT STATES B53

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 .. ... 369 1,900 160 11. . 160 99 209 21 46 54 17 2 420 1,620 270 12 117 75 139 22 40 38 14 3...... 449 2,320 334 13 93 58 388 23 43 30 15 4 .... 588 1,800 353 14 78 310 325 24 114 76 111 5... ---. 1,020 1,200 572 15 70 439 257 25. . 333 187 161 6- ... 1,250 690 1,120 16 - 67 504 165 26 413 332 144 7 .... 1,020 398 1,390 17 66 466 69 27 1,910 481 62 8 510 268 1,010 18 - 74 330 40 28 7,540 524 39 9 348 178 482 19 69 170 28 29 5,400 426 35 10 239 129 316 20 58 76 22 30 2,750 307 34 31 168

Monthly mean c ischarge, in cubic feet per 855 505 276 Runoff, in acre-f eet 50,880 31, 050 16,430 Runoff, in inche 10.48 6.40 3.38

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 23 April 29-Con. May 13 3.00 *JQ 1 *J 99 4,470 12m 3.35 54 3.43 58 19 12.81 3 49 58 April 24 April 30 May 14 12m.. _ - ... 4.29 106 12.36 3,140 3.84 80 5.50 188 2,620 8 6.87 292 11.65 2,260 12m... - 8.00 389 April 25 12 11.51 2,120 8.30 418 8. 8.43 431 6.77 284 19 8.49 438 8 7.37 333 12m.- 7.61 354 12m...... 11.27 1,890 7.75 366 11.06 1,690 19 7.91 QQ1 8 AC\ 49S 8.70 462 April 26 12m.. 10.91 1,560 May 16 12m.... . 8.19 407 11.08 8.65 456 8.83 481 May 3 12m.. 9.04 518 April 27 9.09 528 11.63 2,240 19 9.04 518 8.72 465 12m.-. -- 11.88 2,530 8 9.10 530 n no 2 con May 17 12m.- 10.23 1,080 6 ... 2 4.70 11.30 1,920 12 8.77 472 8 . 13.06 0 I C 12 14.10 6,100 May 18 April 28 1,770 1,470 12m.. 7.36 332 14.68 7 260 6.40 255 12m-- 15.06 8,080 15.08 8,130 6 15.01 7,970 10.40 1,190 12 14.80 7,500 10.00 950 April 29 May 6 14.17 6,240 12m..- 9.43 665 13.65 12p.ta_ 8 00 470 B54 FLOODS OF 1957

34. RED CHUTE BAYOU NEAR SHREVEPORT, LA. Location. Lat 32°33'15", long 93°37'26", in NW^NEK sec. 17, T. 18 N., R. 12 W., at bridge on U.S. Highway 80, 7 miles east of Shreveport. Drainage area. 925 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 133.83 ft above mean sea level (levels by U.S. Army Corps of Engineers). Maxima. April-June 1957: Gage height, 26.31 ft May 1. 1939 to March 1957: Gage height, 31.1 ft Jan. 4, 5, 1941. Flood of July 26, 1933, reached a stage of 33.1 ft. Remarks. Records furnished by U.S. Army Corps of Engineers.

Gage height, in feet, at 8 a.m. of indicated day, 1957

Day April May June Day April May June Day April May June

1 . 18.8 26.3 23.6 11 10 0 24.3 21 20.6 24.2 22.9 2 18.9 26.1 23.4 12 19.9 24.1 22 20.7 24.0 22.7 3 19.1 26.0 24.8 13 20.0 24.1 23 20.7 23.8 22.6 4 19.8 26.0 25.0 14 20.1 24.0 24 20.9 23.7 22.5 5.- ... _ 19.8 25.9 01 1 15 23.9 25 21.5 23.6 22.3 6 19.8 25.7 25.1 16- 20.3 23.8 26 21.5 23.8 22 2 7 19.8 25.6 25.0 17 20.4 24.7 23.6 27 22.0 23.9 22.0 8. ... 19.9 25.4 24.8 1Q 20.4 24.6 OQ K 28 23.4 23.9 21.9 9...... 19.8 24.6 10 20.5 24.5 23.2 29 25.3 23.9 21.8 10 19.8 ...... 24.5 20 " 20.6 24.4 23.1 30 . 26.0 23.8 21.6 31 23.7

35. LOGGY BAYOU NEAR NINOCK, LA. Location. Lat 32°14'10", long 93°25'35" in the SE^SE^ sec. 31, T. 15 N., R. 10 W., at bridge on U.S. Highway 71, a quarter of a mile downstream from Flat River and 2 miles south of Ninock. Drainage area. 2,628 sq mi. Gage-height record. Water-stage recorder graph. Auxiliary gage water-stage recorder graph except Apr. 26 to May 2, May 26-29, and June 2-5. Discharge record. Slope-stage-discharge relation defined by current-meter measurements. Discharge computed by use of fall as determined from aux­ iliary gage as a factor. Discharge Apr. 26 to May 7, May 11-14, 24-29, June 2-5 computed on basis of four measurements of discharge, records of precipitation, stages of Red River, fall in the reach, and records for nearby stations. Maxima. April-June 1957: Discharge, 17,000 cfs 1:00 p.m. May 15; gage height, 47.08 ft May 7. 1948 to March 1957: Daily discharge, 20,000 cfs May 21, 22, 1953; gage height, 43.95 ft May 21, 1953. TEXAS AND ADJACENT STATES B55

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1...... 5,500 7,500 3,960 11 _ .. 7,990 14, 500 4,540 21.. 4,840 13, 800 11,500 2...... 6,020 3,000 5,500 12..... 10, 200 15,000 5,770 22 4,370 13, 000 11,500 3...... 6,030 6,800 6,000 13 11, 700 16, 000 6,930 23 4,230 11,300 9,880 4 ... . 7,020 8,500 6,000 14 - 11, 700 16, 500 7,950 24 4,850 10, 000 8,430 5...... 6,870 8,500 7,500 15 10, 900 16, 700 9,430 25 6,010 9,000 7,160 6...... 6,430 12,000 7,300 16 - 9,710 16, 600 10,400 26 6,500 8,000 6,380 7...... 6,320 13,000 6,200 17 8,520 15, 400 11,100 27 7,000 6,500 5,600 8. ... 5,820 13,000 5,090 18. . 7,520 13, 900 11,900 28 8,000 5,000 5,650 9. ... 6,150 13,400 3,870 19 6,490 12, 900 12,200 29- ... 8,500 4,500 5,230 10...... 6,670 13,900 3,960 20 5,490 13,000 12,500 30 9,000 3,900 5,000 31 4,450

Monthly mean c ischarge, in cubic feet per 7,212 10, 950 7,481 Kunoff, in acre-fset 429, 100 673, 500 445,200

36. SALINE BAYOU NEAR CLARENCE, LA. Location. Lat 31°49'05", long 92°56'55", in SEJ4 sec. 26, T. 10 N., R. 6 W., at bridge on U.S. Highway 84, 4.6 miles east of Clarence and 6.7 miles upstream from mouth. Drainage area. 1,382 sq mi. Gage-height record. Water-stage recorder graph at both gages. Datum of gage is 72.75 ft above mean sea level (levels by Louisiana Department of Public Works). Datum of auxiliary gage is 72.97 ft above mean sea level. Discharge record. Slope-stage-discharge relation defined by current-meter measurements. Discharge computed by use of fall as determined from auxil­ iary gage as a factor. Indefinite stage-discharge relation May 13 and June 10; discharge estimated on the basis of records for adjacent periods and fall in the reach. Upstream flow May 1-13 and June 10-16 due to high stages on Red River. Maxima. April-June 1957: Discharge, 6,980 cfs 12 m. June 29; gage height, 38.08 ft May 13. 1949 to March 1957: Discharge, 14,200 cfs May 19, 1953; gage height, 40.46 ft May 21, 1953. Flood of April 1945 reached a stage of 43.6 ft; information from local resident. Remarks. Some regulation by Saline Lake 4.0 miles above station.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 .... 1,900 -2,320 3,180 11 3,420 -4,740 -2, 590 21 - 2,210 5,930 5,290 2 .... 1,880 -2,650 2,680 12 .. 3,490 3, 780 -3, 170 22 2,020 6,290 5,640 3 .... 1,910 -3,450 2,600 13 .. 3,570 -700 -3, 970 23 1,910 6,580 6,000 4. ... 2,390 -4,080 2,710 14 3,630 3,530 -3,950 24 1,900 6,560 6,340 5 2,900 -4,620 3,090 15 3,630 4,890 -3,420 25 2,000 6,400 6,530 6 3,140 -5, 110 3,330 16 - 3,420 5,720 -2,640 26 2,790 6,280 6,490 7 - 3,340 -5,430 3,250 17 3,200 6,080 2,460 27 3,2£0 5,940 6,600 8 ... . 3,680 -5, 570 2,950 18 2,930 6,030 3,240 28 3,140 5,530 6,820 9 .... 3,550 -5,600 2,140 19 2,650 5,990 4,200 29 2,810 4,990 6,960 10 3,300 -5,390 -1,200 20.- 2,440 5,790 4,880 30 1,950 4,430 6,840 Q1 3,790

Monthly mean <3 ischarge, in cubic feet per 2,812 1,531 2,776 Kunoff, in acre-feet 167, 300 94,160 165, 200 B56 FLOODS OF 1957

37. RED RIVER AT ALEXANDRIA, LA. Location. Lat 31°18'46", long 92°26'34", in SE}^ sec. 10, T. 4 N., R. 1 W., near center of span of old bridge on U.S. Highway 165 between Alexandria and Pineville, 1.7 miles downstream from Bayou Rigolette. Drainage area. 67,500 sq mi, of which 5,936 sq mi above Denison Dam is noncontributing. Gage-height record. Wire-weight gage read twice daily. Datum of gage is 44.26 ft above mean sea level datum of 1929, supplementary adjustment of 1941 (levels by U.S. Army Corps of Engineers). Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 197,000 cfs May 7; gage height, 40.70 ft May 13. 1928 to March 1957: Discharge, 233,000 cfs Apr. 17, 1945 (gage height, 45.23ft). Remarks. Some regulation by Lake Texoma (see p. 32) and by Texarkana Reservoir (see p. 38). Records computed by the U.S. Army corps of Engineers and reviewed by the U.S. Geological Survey.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 - 50,400 1£0,000 144,000 11... 103,000 185,000 165, 000 21 50,000 152, 000 152,000 2..... 53,000 163,000 146, 000 12 102,000 184, 000 163, 000 22... 48,200 149,000 149, 000 3..... 59, 100 107, 000 147,000 13 98,400 182,000 165, 000 23___ 49, 500 147,000 147, 000 4--___ 66,200 169,000 149, 000 14 .. 95,000 175, 000 168,000 24 51,400 141, 000 144, 000 5-____ 74,300 173, 000 1EO.OOO 15_. 90, fiOO 173,000 172,000 25 60,000 136, 000 138, 000 6 82, 900 185,000 151,000 16 84,400 171,000 172,000 26 82,000 131,000 133,000 7 _ _ 89, fiOO 196,000 152,000 17 77,100 170,000 172,000 27 101,000 130,000 129, 000 8 95, 600 193, 000 154,000 18 69,100 168, 000 168, 000 28... 117,000 133, 000 127,000 9 - 99, ?00 189, 000 160, 000 19 61,800 165,000 166, 000 29 127,000 137, 000 122,000 10 102,000 186, 000 165, 000 20 55, 100 157,000 160,000 30 137, 000 140,000 118,000 31 142,000

Monthly mean discharge, in niihin fppt ner sprnnH 81, 120 162, £00 151,600 Runoff, in thousands of acre-feet.. ______. _ .. 4,827 9,995 9,021

SABINE RIVER BASIN 38. SABINE RIVER NEAR EMORY, TEX. Location. Lat 32°46', long 95°48', on left bank at downstream side of bridge on State Highway 19, 3.0 miles upstream from Giladon Creek, 7.5 miles south of Emory, Rains County, 8.0 miles downstream from McBees Creek and at mile 501. Drainage area. 965 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 350.28 ft above mean sea level, unadjusted (Texas Reclamation Department bench mark). Discharge record. Stage-discharge relation defined by current-meter measure­ ments below 46,200 cfs. Maxima. April-June 1957: Discharge, 74,000 cfs 12 p.m. Apr. 27 (gage height, 25.06ft). 1952 to March 1957: Discharge, 34,400 cfs Apr. 30, 1953 (gage height, 20.28ft). Maximum stage known since 1900, 25.7 ft June 1943, from information by local resident and the Texas Highway Department. TEXAS AND ADJACENT STATES B57

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 517 11, 600 703 11 62 71 132 21 2,680 202 15 2..... 1,140 9,880 1,280 12 42 66 71 22 3,970 73 24 3 4,540 12, 700 3,580 13 31 347 53 23 7,9fiO 92 65 4. _ ... 9,010 9,580 5,590 14 24 4,870 39 24 15, F 00 856 21 5 7,580 5,650 8,230 15 21 20,600 31 25 17,000 16, 800 12 6 . 8,190 2,860 12,200 16 18 11,800 28 26 17, 200 14, 200 8.7 7 4,720 1,380 9,840 17 14 6,140 23 27 38, 900 15,000 6.8 8 2,070 374 4,870 18 12 3,500 18 28 55, 500 17,900 8.0 9 425 149 1,960 19 9.8 2,710 15 on 21,600 8,800 18 10 108 99 446 20 317 1,180 12 30 10, 400 3,180 16 31 1,260

Monthly mean c ischarge, in cubic feet per . 7,652 5,832 1,645 Runoff, in acre-fe 455, 300 358, 600 97, 880 Runoff, in inches 8.88 7.00 1.91

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 19 April £8 May 8 5.06 OO OC 56, 800 12m- 8.20 326 20.12 34 QAA 7.30 192 April 20 April 29 May 9 5.38 22 9 ..... 6.05 61 12m. - IQ finn 12m- 6.72 145 12m- .. 7.30 185 13,000 6.64 115 8.80 419 6 ...... 9.64 12 10.77 940 12m-. - 14.77 10, 000 6.45 97 14 40 8,780 6.30 84 11.57 1,670 May H 12m...... 12.38 2,530 13.04 3 7Efl 14.18 7,960 6.15 71 12...... 13.28 4,570 14.13 7,770 6.10 68 12 14.28 8,230 April 22 May IS May 2 1O QO 3 Af\(\ 6.06 65 12m.- 14.77 10,000 11, 300 May 13

1O QC 3, 580 6.02 62 1 Q QA 6 7QA 7.54 223 10, 500 15.68 13, 300 8.10 310 12 16.30 13,200 6 9.50 568 15.16 11, 400 19 10.80 1,100 April 24 May 4 12m... 16.25 15,400 May 14 15.98 14.68 9,670 14.06 7,580 12m 11.97 2,080 April $5 12.16 2,300 6 - 13.34 5,010 12m...... 16.55 16, 800 8 15.44 12,400 16.98 5,630 17.26 19,700 12...... 18,400 13.00 3,780 May 15 April 26 May 6 16,400 18.12 23, 700 12...... 16.61 16,900 12m- 12.52 2,800 12m.- 17.80 22, 100 2 Ofifl 16.38 16, 100 April 27 17.25 19, 500 May 7 May 16 23.85 62,000 11.22 1,410 12m... 15.20 11,500 12...... 25.06 74.000 12D.m_._ 9.82 653 12 p.m...... 14.37 8,610 656087 O 62- B58 FLOODS OF 1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957- Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May 17 May 25 Con June 2 12 m...... K Qlfl 12.63 2 Qfin 11.05 1,290 13.11 11.47 1,620 5 8,800 May 18 7 15.52 13, 100 June 3 12 m.- 16.79 17,900 12 m______12.88 3,420 17 04 10 cnn 12m...... 13.00 3,750 12.80 16.85 18,000 13.38 5,190 12 16.60 17,000 May 19 June 4 May 26 12m..-. . 12.52 2 of\n 12m...... 13.53 5,280 11.93 2 040 1 K OK 11,700 14.00 7,130 May SO May 27 June 5 12 m...... 10.93 14.97 10, 700 12m...... 14.41 8,650 9.98 704 15.57 12p.m...... 14.72 9,830 12 8.75 418 n oo 1 Q onr) 12 17.84 22,200 May SI 12m...... 15.67 13, 300 7.73 OKO 15.70 13, 400 12m...... 7.08 12m.. 16.94 18,400 12...... 15.41 12,300 6.50 12,600 June 7 May 22 May 29 12m...... 14.75 9,940 6.07 66 14.37 8,650 13.94 7,170 13.52 5,710 May S3 June 8 May SO 12 m...... 6.05 64 12m-. 13.25 4,650 6.08 66 1 9 R7 3 inn 12.66 3,000 8 . 6.83 12- 217 May 31 Mayg4 11.87 1,980 12m . 10.78 1,090 6p.m...... 11.32 1,500 6 a.m ...... 9.20 504 9.80 647 12 10.58 968 12 m___ __ .. 10.24 11.47 May 25 9.63 602 6a.m ...... 9.54 580 632 12m ...... 8.47 370 2 a.m.,,. .... 11.93 2,040 10.53 940 7.09 164

39. LAKE PORK 8ABINE RIVER NEAR QUITMAN, TEX. Location. Lat 32°46', long 95°28', near center of main channel at upstream side of bridge on State Highway 37, half a mile downstream from Dry Creek and 2.5 miles south of Quitman, Wood County. Drainage area. 586 sq mi. Gage-height record. From graph based on wire-weight gage readings made twice daily except Apr. 21,22 and June 18-27. Datum of gage is 317.42 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation denned by current-meter measure­ ments. Maxima. April-June 1957: Discharge 17,800 cfs 4 p.m. Apr. 28 (gage height, 20.38ft). 1924-26, 1939 to March 1957: Discharge, 75,600 cfs Mar. 30, 1945 (gage height, 29.85 ft, from floodmark), from rating curve extended above 49,000 cfs. Maximum stage since at least 1895, that of Mar. 30, 1945. Flood in July 1895 reached a stage of about 25.9 ft; information from local resident. TEXAS AND ADJACENT STATES B59

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 _ .... 395 7,370 924 11.---. 130 111 186 21..... 337 103 25 2. ... 459 7.8EO 1,090 12 83 105 111 22..... 1,110 79 30 3...... 607 6,600 3,180 13 68 162 77 23 .. 3,810 109 45 4 .... 4,680 3,660 5,780 14..... 61 707 61 24 .. 12, 300 469 60 5... __ 9,000 2,200 7,800 15 57 7,690 51 25. _ . 14,200 709 40 6 5, £00 1,570 7,270 16 60 5,010 43 26 . 12,600 6,130 30 7 2,630 942 4,680 17 80 2,550 38 27 12,900 12, £00 25 8 1.430 410 2,420 18 82 1,460 35 28 16,600 11,100 19 9. ... '873 195 1,470 19 73 776 30 29 10,100 4,620 18 10 276 127 787 20 98 244 28 30 4,910 2,160 14 Si-­ 1,270

Monthly mean c ischarge, in cubic feet per 3, 8£0 2, 871 1,212 Kunoff, in acre-fc et 229, 100 176, £00 72, 130 Runoff, in inches 7.33 5.65 2.31

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 19 April %8 Con. May 16 12p.m...... 4.79 72 20.38 17,800 12m.. 16.45 4,790 8 20.20 17 15.83 3,550 April HO 12 19.73 15,100 12. 15.60 3,220 4.88 77 April 20 May 17 12m...... 5.08 07 5.60 110 12m-. 18.20 Q un 12m. 14.96 2,500 12 6.40 163 12 p.m...... 17.00 6,100 14.28 1,970 April HI April 30 May 18 12 m...... 8.40 300 12m ic on 4,660 13.75 1,660 12p.m...... 10.40 584 16.22 4,280 12m. 13.30 1,450 12... _ ...... 16.30 4 ' 460 12.70 1,220 April 2% 12... _ 12.00 1,030 May 1 12 m...... 12.60 1,030 12 p.m...... 14.60 1 ' 800 12m.. 17.80 8,300 1 7 QA s finn 12m. 10.96 792 April 23 12 17.67 7,910 10.00 602 12. 9.20 462 8 a.m.-...... 16.00 12 m...... 16.10 3 QAn 16.12 3,880 5.36 1HQ 12. , 17.20 6,600 7 on 291 May 18 12m - 7.00 216 April 24 5.80 128 5 At) 105 4 a.m...... 18.80 11 600 12m.- 5 no 136 12m...... 19.12 12 800 6.60 181 12p.m...... 19.46 14,000 12 s nn onn 4.75 71 12m. 5.00 83 April 85 May 14 5.80 128 12 . 7.30 240 11 a.m ____ 19.70 15,000 9.30 478 12m...... 19.66 14,800 12m. in ^s 676 12 p. m._._ 19.22 13, 100 11.00 ftfin 8 11.30 Sfifi 8.85 409 April K 10 12.20 1,080 12m. 9.40 494 12 14.40 2,050 9.73 557 12 m...... 19.00 12, 300 12 . 9.95 593 12p.m...... 19.10 19 7nn May 15 May 25 April 27 16.00 3,840 12m. - 10.30 660 12m... 19.08 12,600 16.90 5 sfln 10.50 700 6 p.m...... 19.14 12,800 6 ...... 17 CO 7,480 10.95 790 12...... 19.55 14,400 8 . 1 7 78 8 94H 10 11.45 899 10 18.00 s Qnn 12. 12.65 1,200 April 28 12m.--.. . 18,07 9,120 18 1 1 9 OQA 8a.m...... 20.18 17,000 4 ... . 18.10 9,220 12m. . 20.32 17,500 12...... 17.60 7.700 4 a.m.-. 15.45 3,040 B60 FLOODS OF 1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May #6 Con. May %9 June 4 6 ...... 16.20 4,240 12m.. 16.20 4,240 16.94 5,960 12m...... 16.90 5,860 15.30 2,860 12m-.- 16.94 5,960 6p.m...... 18.10 9,220 16.82 5,670 12...... 18.15 9,380 12. 17.10 6,340 11.60 932 12m...... 17.80 8,300 18.20 9,540 17.82 8,360 12m...... 19.10 12, 700 11.65 944 12 17.72 8,060 6p.m...... 19.85 15,600 12m..... 11.85 992 6:30--- . 19.90 15, 800 12.40 1,130 7 ...... 19.85 12__ 13.70 1,640 12...... 19.65 14 ' 800 17.50 7,420 12m.. 17.50 7,420 JuneS 17.35 7,000 12.. . 17.04 6,200 14.88 2,430 12m...... 18.70 11,200 12m... 15.40 2,980 12p.m...... 17.40 7,140 16.55 5,020

40. SABINE RIVER NEAR GLADEWATER, TEX. Location. Lat 32°32', long 94°57', on right bank on downstream side of bridge on U.S. Highway 271, half a mile downstream from Glade Creek, 1 mile south­ west of Gladewater, Gregg County, and at mile 398. Drainage area. 2,846 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 243.85 ft above mean sea level (Texas Reclamation Department bench mark based on U.S. Geological Survey datum). Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 58,900 cfs 4 p.m. May 1 (gage height, 40.35 ft). 1932 to March 1957: Discharge, 138,000 cfs Apr. 2, 1945 (gage height, 44.16 ft, from floodmark). Maximum stage since at least 1914, Apr. 2, 1945. Flood in May 1914 reached a stage of about 41.7 ft (discharge, 71,100 cfs); information from local resident. Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 5,950 57, 400 22,900 11 6,990 12, 100 15,900 21 6,090 9,170 1,260 2 _ 5,380 54, 700 20,500 12..... 7,620 10,400 14,700 22 6,430 10,200 866 3...... 4,620 45, 700 18,500 13. . 7,870 8,990 13, 200 23 7,660 10, 400 1,180 4...... 3,760 36, 300 16,600 14..... 7,880 7,100 11,500 24 8,520 9,990 1,320 5. ... 3,080 29,200 15, 800 15 7,430 5,830 9,850 25 9,330 9,27C 1,110 6 3,050 24,400 15,000 16 6,180 4,820 7,820 26 13,400 8,680 959 7 2,950 20,900 14, 000 17..... 4,920 4,220 5,950 27 32,600 8,080 836 8...... 4,150 18, 500 14,000 18 3,390 4,400 4,150 28 37,100 7,390 763 9 5,450 16, 100 14, 900 19 2,330 5,700 2,760 29 41,800 7,090 656 10 ._. 6,280 14,000 16,000 20..... 3,210 7,390 1,840 30 47,500 12,800 460 31 21,100

Monthly mean c ischarge, in cubic feet per 10, 430 16,200 8,843 Runoff, in acre-f set 620,700 996,300 526, 200 Runoff, in inche 4.09 6.57 3.47 TEXAS AND ADJACENT STATES B61

41. SABINE RIVER AT LOGANSPORT, LA. Location. Lat 31°59', long 94°01', at Logansport, De Sota Parish, 4,600 ft upstream from bridge on U.S. Highway 84, 4,800 ft upstream from Texas and New Orleans Railroad bridge, 4 miles upstream from Bayou Castor, and at mile 268. Supplementary wire-weight gage at highway bridge 4,600 ft downstream used as regular gage above a stage of 24.0 ft. Drainage area. 4,858 sq mi. Gage-height record. Water-stage recorder graph Apr. 1-24. Graph for Apr. 25 to June 30 drawn on basis of wire-weight gage readings made at least once daily. Datum of gages is 147.72 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Affected by backwater May 26-30. Maxima. April-June 1957: Discharge, 61,300 cfs 12 m. May 7 (gage height, 39.41 ft). 1903 to March 1957: Discharge, 92,000 cfs Apr. 8, 1945 (gage height, 44.07ft from floodmark at site of supplementary gage). Maximum stage since at least 1884, that of Apr. 8, 1945. Flood in May 1884 reached a stage of 39.4 ft at site of supplementary gage. Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

I... . 6,890 30,600 9,120 11 5,250 45,100 20,900 21.--. 7,880 16,900 15,900 2...... 7,320 34,900 9,330 12. . 5,720 39,900 20, 800 22..... 8,180 15,600 15,600 3...... 7,680 40,900 9,740 13. . 4,670 35, 300 20,400 23. . 8,670 14, 300 15, 200 4...... 8,430 48,900 10,100 14 4,820 33,000 19,600 24 9,940 12,900 14,800 5...... 8,790 56,500 10,700 15 5,070 29, 400 18,900 25 11,500 11,400 13,900 6 8,630 60,300 11,500 16.-... 5,400 26,000 18,200 26 13,200 10,200 12,200 7... . 8,070 61, 300 12,400 17 5,940 23,200 17, 600 27 15, 200 9,200 10,500 8... . 7,610 59,100 13,800 18 7,700 21,000 17,000 28 18,200 8,700 8,300 9...... 7,070 55,300 17, 100 19. . 8,100 19,600 16,600 29 21,800 8,600 5,500 10 6,160 51,000 19,900 20 7,840 18,200 16, 400 30 26,700 8,700 3,340 31 8,950

Monthly mean d ischarge, hi cubic feet per s 9,248 29, 510 14,180 Kunoff, in thous fflds of a 3re-feet 550.3 1,815 843,6 Kunoff, in inches 2.12 7.00 3.26

42. SABINE RIVER BELOW TOLEDO BEND, NEAR BURKEVILLE, TEX. Location. Lat 31°03'50", long 93°31'10", near center of channel on down­ stream handrail of bridge on State Highway 63, about 200 ft downstream from Pearl Creek, 10 miles northeast of Burkeville, Newton County, 16 miles down­ stream from Bayou Toro, 23 miles downstream from proposed Toledo Bend Dam, and at mile 140. Drainage area. 7,547 sq mi. Gage-height record. From wire-weight gage readings made twice daily. Datum of gage is 70.59 ft above mean sea level, datum of 1929, supplementary adjustment of 1941. Discharge record. Stage-discharge relation denned by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 52,900 cfs 3-11 p.m. May 15 (gage height, 32.43 ft). 1955 to March 1957: Discharge, 14,800 cfs Apr. 12, 1956 (gage height, 17.73 ft). Maximum stage since about 1860, 35.9 ft in May 1884, from information by local resident. Flood of Apr. 15, 1945, reached a stage of 35.8 ft, and flood of May 23, 1953, reached a stage of 35.3 ft according to floodmarks. B62 FLOODS OF 1957

Mean discharge, in,cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 __ ... 8,020 25,300 17,000 11 11,800 45, £00 14,000 21 8,610 42,400 18,700 2 9,280 26,900 14,800 12 11,200 48,200 14,200 22 9,120 39, £00 18,800 3 10,400 28,300 13, £00 13 9,480 £0, £00 14,600 23 9,190 36,600 19,400 4 _ ... 12,400 29,600 13,300 14. .... 7,160 52,100 15,000 24 10,100 33,800 19,900 5 14,700 31,000 15,300 15 6,130 52,800 15,700 25 11,000 31,700 19,900 6 15,100 32,800 15,400 16 5,840 52,100 16,200 26 . 14,700 29,700 19,700 7 . 14,400 34,800 14,800 17 5,840 51,500 16,900 27 17,000 27, 00 20,300 8...... 13,800 37,100 14,600 18 6,000 £0,000 17,400 28 19,100 26,000 21,300 9 13,300 39,800 14,300 19 _ .. 6,440 48,200 18,000 29 21,000 23,800 20,800 10 12,600 42, £00 14,000 20 7,620 45,300 18, £00 30 23,100 21,700 20,200 31 19,200

Monthly mean c ischarge in cubic feet per £>econd 11, 480 37,300 16,890 Runoff, in thous mds of acre-feet 683.0 2,293 1,005 Runoff, in inches 1.70 5.70 2.50

43. SABINE RIVER NEAR RTJLJFF, TEX. Location. Lat 30°18'10", long 93°44'40", at bridge on State Highway 235> 2.4 miles north of Ruliff, Newton County, 4.2 miles upstream from Kansas City Southern Railway bridge, 4.5 miles downstream from Cypress Creek, and at mile 40. Drainage area. 9,440 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 4.08 ft above mean sea level datum of 1929, supplementary adjustment of 1941. Discharge record. Stage-discharge relation denned by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 53,800 cfs 7 a.m. May 20 to 11 a.m. May 21 (gage height, 15.96 ft). 1924 to March 1957: Discharge, 121,000 cfs May 22, 1953 (gage height, 19.98ft). Maximum stage since at least 1835, about 22.2 ft in May or June 1884; information from local residents.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 __ ... 12,000 25,600 33,000 11 .. 20,900 33,900 19,200 21 10,000 53, £00 20,000 2 ... 12,300 30,100 30,700 12 20,900 35,900 18,700 22 10,000 52, £00 20,800 3 . 13,000 33, £00 28,100 13 20,100 38,000 18,200 23 10,400 51,200 21, 800 4 14,000 34,700 25,600 14- .... 20,000 40,500 17,700 24 11,000 49,100 22,700 5...... 14,300 33,900 23,000 15 19,600 42,100 17, £00 25 11,700 47,100 22,700 6 . 14,800 33,000 21,200 16 18,600 44,900 17, £00 26 12,000 44,900 23,000 7...... 15,700 32,200 19,800 17 16,000 47,900 17,700 12,600 42,600 28,900 8 16,800 32,100 19,000 18 13,400 £0,500 18,000 28 14,400 40,500 38,700 g 17,600 32,200 19,000 19 11,700 52,800 18,500 29. 16,900 38,000 40,000 10 _ ... 18,100 33,400 19,200 20 10,500 53,700 19, 200 30 - 21,200 35,400 40,000 31 33,000

Monthly mean c ischarge in cubic feet per ; 15,020 40,290 23, 310 Runoff, in thous inds of acre-feet 893.6 2,478 1,387 Runoff, in inches 1.77 4.92 2.75 TEXAS AND ADJACENT STATES B63

NECHES RIVER BASIN 44. NECHES RIVER NEAR NECHES, TEX. Location. Lat 31°54', long 95°26', near left bank on downstream side of pier of bridge on U.S. Highway 79, half a mile downstream from International- Great Northern Railroad bridge, 1 mile downstream from Walnut Creek, 4.4 miles northeast of Neches, Anderson County, and at mile 333. Drainage area, 1,129 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 263.93 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation denned by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 15,800 cfs 12 p.m. May 1 (gage height, 17.80ft). 1939 to March 1957: Discharge, 45,500 cfs Apr. 2, 1945 (gage height, 22.07ft). Highest stage since at least 1884; 24.3 ft in May 1908; information from local resident. Flood in May 1884 was probably higher.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1. ------944 15,100 3,830 11. _ . 634 2,110 3,340 21 1,240 930 540 2 970 14,800 3,390 12 575 1,840 2,470 22 2,090 998 423 3_ ... 978 11,800 2,920 13 550 1,600 2,020 23 4,310 1,060 398 4_ ...... 984 9,860 2,840 14-, - 557 1,430 1,660 24 6,280 1,060 397 5 _ .... 974 8,200 4,530 15 569 1,300 1,370 25- 11,600 1,010 391 6... 930 6,600 9,360 16 614 1,210 1,180 26 . 14, 100 936 360 7...... 879 5,180 10, 500 17-. 716 1,120 1,040 27 14,800 837 308 8 ... - 827 4,050 8,820 18 772 1,040 932 28- 14,900 875 268 9 . 769 3,250 6,480 19- 796 964 830 29.- 14,000 1,550 247 10 _._ 700 2,570 4,590 20 861 918 700 30 . 13,600 4,120 226 31 4,480

Monthly mean d ischarge, in cubic feet per 3,751 3,639 2,545 Runoff, in acre-fe et 223,200 223,700 151,500 Runoff, in inches 3.71 3.72 2.52

45. NECHES RIVER NEAR ROCKLAND, TEX. Location. Lat 31°01'45", long 94°23'50", on left bank 2,100 ft upstream from Texas and New Orleans Railroad bridge, 2,200 ft downstream from bridge on U.S. Highway 69, 1 mile north of Rockland, Tyler County, 3.6 miles downstream from Billams Creek, and at mile 158. Drainage area. 3,623 sq mi. Gage-height record. Staff-gage readings made twice daily. Datum of gage is 91.41 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 29,700 cfs, 1 p.m. May 3 (gage height, 25.10 ft); gage height, 25.34 ft at 3 p.m. May 4. 1903 to March 1957: Discharge, 49,800 cfs May 6,1944 (gage height, 31.84ft). Maximum stage known, 34.9 ft (discharge, about 62,000 cts) in May 1884; information from local residents. B64 FLOODS OF 1957

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1- _ .. 1,890 16, 200 2,280 11 1,310 20,400 3,410 21 1,160 7,600 6,480 2 _ 1,790 25,100 2,370 1,250 18, 700 3, 550 22 1,140 6,850 6,620 3 1,780 29,000 2,110 13 1,200 17, 700 3,580 23 1,120 6,150 6,690 4 _ 2,770 28, 100 2,120 14 1,160 16,400 3,470 24 1,210 5,570 6,570 5... .-. 2,060 27,000 2,180 15 1,140 15, 000 3,360 25 2,440 4,950 6,060 6...... 1,830 26,300 2,370 16 1,260 13, 500 3,350 26 4,430 4,530 5,630 7 1,650 25, 500 2,470 17 1,310 12, 200 3,540 27 4,620 4,110 5,320 8 ... . 1,410 24,400 2,630 18 1,220 10, 800 4,240 28 . 5,470 3,660 5,240 9 1,260 23,100 2,870 19- 1,200 9,590 5,140 29 7,420 3,260 4,440 10 1,160 21,600 3,170 20 1,180 8,540 5,960 30. 9,860 2,930 3,700 01 2,540

Monthly mean d ischarge, in cubic feet per s 2,290 14, 230 4,031 Runoff, in acre-fe et 136, 300 875, 300 239, 800 Runoff, in inches 0.72 4.64 1.27

46. MUD CREEK NEAR JACKSONVILLE, TEX. Location. Lat 31°58'40", long 95°09'40", on right bank on downstream side of pile bent of bridge on U.S. Highway 79, 0.6 mile downstream from Caney Creek, 3.9 miles downstream from another Caney Creek, 4 miles downstream from International-Great Northern Railroad bridge, and 6.9 miles east of Jacksonville, Cherokee County. Drainage area. 382 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 271.64 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 7,040 cfs 8 a.m. May 1 (gage height, 10.12 ft.) 1939 to March 1957: Discharge, 23,400 cfs May 3, 1944 (gage height, 14.09 ft). Maximum stage since May 1884, about 20 ft in May 1908 and December 1913; flood of May 1884 was higher, stage unknown; information from local residents. Remarks. Flow slightly regulated by Lake Tyler (usable capacity, 39,000 acre-ft) on Prairie Creek.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 227 6,190 461 60 360 622 21 - 290 200 128 2 226 5,520 811 12..... 52 288 490 22 934 138 175 3 198- 4,290 2,840 13 .. 46 249 371 OO 3,500 103 234 4...... 179 2,540 4,420 14____. 43 248 262 24 3.560 165 195 5 165 1,470 4,200 15-... 41 252 213 25 4,000 121 219 6_.._.._ 147 960 4,330 16 48 249 181 26 3,830 131 239 7 .... 127 740 3,220 17- 73 276 150 27 3,180 222 248 8 117 614 1,920 18. . 104 312 116 28 4, 230 242 210 9 102 520 1,130 19 134 326 106 29 5,250 269 132 10. 77 446 783 20 167 271 193 SO ­ 4,890 300 93 SI - 340

Monthly mean d ischarge, in cubic feet per 1,200 915 956 Runoff, in acre-fe et_- . 71,400 56, 240 56, 910 Runoff, in inches 3.50 2.76 2.79 TEXAS AND ADJACENT STATES B65

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 19 April 36 Con. June 1 12 p.m__ ..... 4.60 145 12 p.m___ 8.75 3,240 12 p.m...... 6.85 555 April 20 April 27 June & 4.75 154 12m______8.72 3,220 6.77 502 6.-.-----.. 5.15 185 8.64 3,060 12 m...... 6.95 630 12_. ______5.60 225 7.32 1,080 April 18 12 7.88 1,990 April 31 12m...... 9.08 4,030 6.03 270 9.78 5,790 6.30 306 8.42 2,940 12 __ _ 6.58 360 ' April 29 8.29 2,700 12...... 8.78 3.680 April K 9.80 5, 850 12m...... 9.60 5,350 12m.-.____._ 6.92 484 12p.m...... 9.19 4,380 7.18 654 9.33 4,960 8... --_--__ 8.05 1,940 April SO 12m...... 9.28 4.830 12______.__ . 8.65 3,000 9.00 4,160 9.05 4,090 12 9.07 4,330 9.37 4,860 9.65 5,650 8.90 3,500 12 9.92 6,410 8.97 3,650 10a.ni -__ 8.88 3,900 12.. ______8.91 3,520 9.00 4,160 12 9.22 4,690 April 24 10.12 7,040 9.74 5,960 12m______8.98 3,680 10 ---_ 9.40 5,140 8.83 3,360 12. 9.42 5,190 9.25 4,760 12 m _ _ 9.08 4,350 April IB 12 p.m...... 8.83 3,790 12m______9.16 4,070 12m 9.65 5,820 8p.m___ ..... 9.30 4,400 12p.m__ ..... 9.45 5,270 12...... 9.28 4,350 12m... _._.._ 8.59 3,280 May S 12p.m__ ..... 8.20 2,540 April 36 12m____ .... 9.05 4,280 12m 9.05 3,870 8.62 3,340

47. ANGELINA RIVER NEAR LTJFKIN, TEX. Location. Lat 31°27'26", long 94°42'34", near right bank on downstream side of bridge on U.S. Highway 59, 200 ft upstream from Procella Creek, \}'i miles downstream from Bayou Loco, 1.5 miles upstream from Southern Pacific Rail­ road bridge, and 8 miles north of Lufkin, Agelina County. Drainage area. 1,630 sq mi. Gage-height record. Water-stage recorder graph except June 3-9. Datum of gage is 164.72 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation denned by current-meter measure­ ments. Discharge June 3-9 estimated on basis of recorded range in stage, records of weather, and records for station near Zavalla. Maxima. April-June 1957: Discharge, 19,900 cfs 1 a.m. May 2 (gage height, 15.92ft). 1923-34, 1939 to March 1957: Discharge, 38,200 cfs Feb. 24, 1932; gage height, 18.55 ft May 7, 1944. Maximum stage known, about 26.5 ft in May 1884; informationfrom local residents. B66 FLOODS OF 1957

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 966 18, 800 755 11 920 6,100 6,920 21 394 1,250 1,810 2 1,060 19,400 818 12 804 4,980 6,610 22 . 519 1,100 1,510 3... 1,130 17,800 940 13 643 4,250 5,910 23 713 954 1,320 1,190 17,000 1,200 14- _ . 526 3,800 5,210 24 2,520 846 1,320 5 1,220 16,600 1,500 15 453 3,500 4,470 25 8,650 766 1,440 6...... 1,210 15,600 2,000 16 455 3,050 3,870 26 8,550 696 1,500 7 1,200 13, 700 2,700 17 464 2,540 3,400 27 7,360 702 1,500 8 .... 1,170 11,400 3,600 18 438 2,120 2,930 28 8,410 762 1,470 9. ... 1,100 9,330 4,800 19 392 1,760 2,450 29 13,400 727 1,440 10 992 7,600 6,240 20 378 1,440 2,080 30 16,000 668 1,350 31. 671

Monthly mean d ischarge, in cubic feet per 2,774 6,126 2,769 Runoff, in acre-fe et 165, 100 376, 700 164,800 Runoff, in inches 1.90 4.33 1. tfO

48. ATTOYAC BAYOU NEAR CHIRENO, TEX. Location. Lat 31°30'15", long 94°18'15", on left bank just downstream from bridge on State Highway 21, 3 miles northeast of Chireno, Nacogdoches County, and 7 miles downstream from Arenoso Creek. Drainage area. 502 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 169.95 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 14,300 cfs 1 a.m. May 2 (gage height, 21.34ft). 1924-25, 1939-54, 1955 to March 1957: Discharge, 31,900 cfs Nov. 24, 1940 (gage height, 25.97 ft). Maximum stage known since at least 1902, 29.9 ft in June 1912; information from local residents.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1- 623 11,600 271 196 494 1,100 21.. 178 264 185 2_ ... 629 12,000 302 12 230 354 915 22 250 212 206 3 603 5,060 719 13 185 304 525 23 461 180 400 695 1,880 822 14 158 311 312 24 1,250 161 590 743 1,390 923 15 145 568 390 25 4,580 166 -649 6 . 645 1,090 1,010 16 152 656 438 26 8,760 307 653 7 428 1,010 2,000 17 198 618 397 27 5,190 419 675 8 285 965 1,780 18 241 574 274 28 4,570 458 705 9_ 215 928 1,470 19 278 521 180 29 7,710 506 624 10 175 779 1,280 20 240 375 152 30 7,650 528 359 31- 462

Monthly mean d ischarge, in cubic feet per 1,589 1.456 677 Runoff, in acre-fe et 94,540 89,530 40,280 Runoff, in inches 3.53 3.35 1.50 TEXAS AND ADJACENT STATES B67

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April SI April 25 Con. April 29 Con. 12p.m...... 5.78 165 16.22 1,840 19.20 7,500 16.70 2,310 8 _ 19.27 7,710 April U 2.... _ . _ .. 17.45 3,340 12 .... 19.19 7,470 4 ...... 18.85 6,480 6.44 209 8 ...... 19.90 9,600 8...... 6.22 193 12 20.35 11,000 12m...... 6.48 212 2a.m.._...... 19.11 7,230 7.83 314 9- _ ...... 19,22 7,560 12...... 8.50 368 2p.m...... 19.18 7,440 20.37 11, 100 12 19.53 8,490 April 23 9..-...... 20.00 9,330 19.55 7,980 Mayl 9.35 442 12 19.02 6,420 10.00 500 19.97 9,810 12...... 10.27 524 April 27 20.84 12,600 12 21.33 14, 200 April 24 12m...- 18.49 5,100 18.09 4,150 11.80 675 4.-...... 13.35 864 21.34 14,300 6...... 14.50 1,070 5...... 21.25 14,000 7...... 14.90 1,180 17.83 3,810 11 20.87 12,700 12m.- 15.60 1,440 2p.m ...... 17.94 4,030 7p.m _ ..... 20.05 10,100 15.65 1,470 7-.....- .-. 18.49 5,320 12 19.53 8,490 12 15.86 1,590 12 19.18 7,440 May 3 April 25 April 29 12m ...... 18.48 4,550 16.30 1,900 19.39 8,070 12p.m...... 17.77 2,650

49. ANGELINA RIVER NEAR ZAVALLA, TEX. Location. Lat 31° 13', long 94°18', at bridge on State Highway 147, just down­ stream from Harvey Bayou, 3 miles downstream from Attoyac Bayou, and 8% miles northeast of Zavalla, Angelina County. Drainage area. 2,880 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 104.48 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation denned by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 32,700 cfs 9 p.m. May 3 (gage height, 27.23ft). 1951 to March 1957: Discharge, 37,300 cfs May 18, 1953 (gage height, 27.72ft). Maximum stage since about 1883, about 29.4 ft in June 1902; flood of 1932 was second highest, stage unknown; information from local residents. B68 FLOODS OF 1957

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1.... _ 2,020 25,700 1,660 11 1,770 15,400 3,320 21 983 5,680 5,590 2 2,030 28,800 1,650 12..... 1,680 14,100 3,720 22 - 912 4,850 5,090 3_ ... 2,230 31,900 1, 730 13. 1,660 12,800 4,000 23 944 3,900 4,910 4 _ 3,070 31,000 2,100 14 1,570 11,500 4,350 24 __ 1,160 2,970 4,460 5 2,680 26,400 2,280 15 1,410 10,300 4,930 25 3,640 2,250 3,980 6...... 2,440 22,800 2,440 16 1,240 9,030 5,580 26_ _ 4,820 1,870 3,440 7 2,290 20,500 2,690 17 1,140 8,160 6,130 27 5,280 2,020 2,900 8 2,220 19,200 2,850 18 1,100 7,570 6,340 28 10, 400 2,500 2,750 9_...... 2,150 18,000 2,920 19 1,050 7,080 6,300 29 17,500 2,410 2,520 10 1,970 16,800 3,030 20 1,010 6,420 6,120 30 21,800 1,950 2,440 31 1,710

Monthly mean d ischarge, in cubic feet per 3,472 12,120 3,741 Runoff, in acre-fe *t 206,600 744, 900 222, 600 Runoff, in inches 1.34 4.85 1.45

50. DAM B RESERVOIR AT TOWN BLUFF, TEX. Location. Lat 30°47'47", long 94°10'52", near right bank 70 ft upstream from outlet structure of Dam B on Neches River, about 0.4 mile north of Town Bluff, Tyler County, and at mile 114. Drainage area. 7,407 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is at mean sea level datum of 1929, Galveston-Houston supplementary adjustment (levels by U.S. Army Corps of Engineers). Maxima. April-June 1957: Contents, 96,180 acre-ft 12 p.m. June 4 (elevation, 83.14ft). 1951 to March 1957: Contents, 128,400 acre-ft May 22, 1953 (elevation, 85.21 ft). Remarks. Reservoir is formed by earth-fill dam with a concrete section having a total length of dam, 6,698 ft, including concrete spillway and nonoverflow section. There is a 6,100-ft uncontrolled emergency spillway, with a crest at elevation 85.0 ft, on the left bank. There also is a 326-ft gated spillway with six 40- by 34-foot taintor gates at elevation 50.0 ft. Capacity, 306,400 acre-ft at maximum design water surface (elevation, 93.0 ft), 124,700 acre-ft at crest of uncontrolled spillway and top of taintor gates (elevation, 85.0 ft), and 94,200 acre-ft at normal pool (elevation, 83.0 ft). Capacity is zero at sill of taintor gates (elevation, 50,0 ft). Records furnished by U.S. Army Corps of Engineers. TEXAS AND ADJACENT STATES B69

Elevation, in feet, and contents, in acre-feet, at 12 p.m. of indicated day, 1957

Al)ril May Julie Day Elevation Contents Elevation Contents . Elevation Contents

1 ...... 82.80 91,540 82.26 84, 150 82.80 91,540 2 . _ _ ...... 82.68 82.22 84,000 82.92 93 160 3 83.02 94,520 82.37 85, 910 83.05 94,940 4...... 83.04 94,800 82.39 86,160 83.14 96, 180 82.71 84, 380 83.03 94,660 6 82.71 90, 340 82.28 84, 760 82.78 91, 270 7 ------82.80 91,540 82.16 83,250 82.62 89,150 8. .. . - 82.84 82.12 82, 760 82.54 88, 100 9 82.80 91,540 82.15 82.45 86,940 10. _ . _ _-._.: 82.77 91, 130 82.19 83,630 82.56 88,360 ii - - . ... _-.._. 82.78 91, 270 82.21 83,880 82.77 91, 130 12...... 82.70 90, 200 82.22 84,000 82.82 91,800 13...... 82.62 89, 150 82.23 84, 130 82.70 90,200 14 _ _ _ . 82.67 89, 810 82.30 85, 010 82.62 89, 150 15 82.75 90, 870 82.42 86,550 82.66 89,680 16 82.78 91, 270 82.50 87, 580 82.83 91,940 17 . 82.68 89, 930 82.57 88, 490 83.02 94,520 18... .. 82.66 89, 680 82.92 93, 160 19...... - ..... ---._. 82.73 90,600 82.60 88,880 82.62 89,150 20 82.82 91,800 82.76 91,000 82.52 87, 840 21. - ...... 82.84 92, 070 82.87 92, 480 82.54 88,100 22...... - ...... 82.76 91,000 82.83 91, 940 82.61 89,020 23 82.70 90,200 82.80 91, 540 82.58 88,620 24...... 82.65 89, 540 82.74 90,740 82.47 87, 190 25 _ 82.72 90,470 82.85 92, 210 82.38 86, 040 26 -. .. 82.63 89,280 82.92 93,160 82.40 86,290 27 -- ...... 82.66 89,680 82.90 92, 880 82.46 87,060 28 .. _ 82.43 86,680 93, 430 82.45 86, 940 29 -_-.- _ .--.-.. -----.. .. 82.20 83,750 82.97 93, 840 82.58 88,620 30 . 82.22 84,000 82.91 93,020 82.61 89,020 31 82,89 92,750 +8, 750 -3, 730

51. NECHES RIVER AT EVADALE, TEX. Location. Lat 30°21', long 94°05', near left bank on downstream side of pier of bridge on U.S. Highway 96, 200 ft upstream from Gulf, Colorado and Santa Fe Railway bridge at Evadale, Jasper County, 600 ft downstream from Mill Creek, 15 miles upstream from Village Creek, and at mile 55. Drainage area. 7,923 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 8.25 ft above mean sea level datum of 1929, Galveston-Houston supplementary adjustment of 1936. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 55,300 cfs 1-6 a.m. May 10 (gage height, 20.55ft). 1904-6, 1923 to March 1957: Discharge, 92,100 cfs May 11, 1944 (gage height, 23.58 ft, from floodmark). Maximum stages known, 26.2 ft in May 1884 (discharge, about 125,000 cfs) and 24.5 ft in August 1915 (discharge, about 102,000 cfs), from rating curve extended above 92,000 cfs.* Information on stages from Gulf, Colorado and Santa Fe Railway Co. Remarks. Some regulation by Dam B Reservoir. B70 FLOODS OF 1957

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 4,920 20,900 6,760 11 5,820 53,200 7,320 21 2,540 27,600 10,400 2--.. .- 5,660. 23,800 6,390 12 5,480 50,300 6,530 22 - 2,220 25,100 12,000 3 6,650 25,400 5,880 13 5,700 47,200 6,030 23 2,310 22,300 13,100 4 - 6,830 27,300 5,120 14 __ 5,720 44,400 6,520 24 2,650 19,600 13,400 5 -.- 6,710 30,200 4,670 15..... 4,700 41,800 7,390 25 - 2,900 16,900 13,700 6 7,880 37,000 5,060 16 3,620 39,200 8,010 26. 3,420 14,500 14,100 7 9,400 46,000 6,050 17 3,250 36,500 8,110 27 4,850 11,600 15,400 8 ... 9,300 52,000 7,060 18 3,400 34,000 8,030 28 . 7,550 9,440 16,300 9 ... 7,390 54,800 7,550 19 3,490 32,000 8,210 29 11,200 7,960 15,500 10 - . 5,950 55,000 7,630 20 3,120 29,700 9,040 30 15,800 7,100 14,900 31--.. 6,680

Monthly mean discharge, in cubic feet per s 5,681 30,630 9,205 Eunoff, in thousands of ai3re-feet 338.0 1,883 547.8

52. VILLAGE CREEK NEAR KOUNTZE, TEX. Location. Lat 30°23'43", long 94°15'45", on left bank 800 ft downstream from bridge on Farm Road 418, 1.2 miles upstream from Gulf, Colorado and Santa Fe Railway bridge, 2.7 miles upstream from Cypress Creek, 3.2 miles north­ east of Kountze, Hardin County, and 4}6 miles downstream from Beech Creek. Drainage area. 837 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 25.12 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 10,700 cfs 4-7 p.m. May 2 (gage height, 17.96 ft). 1924-27, 1939 to March 1957: Discharge, 67,200 cfs Nov. 26, 1940 (gage height, 27.6 ft, from floodmark), from rating curve extended above 35,000 cfs. Maximum stage known since 1913, about 34 ft in August 1915. Flood of May 27, 1929, reached

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1_ 980 7,230 179 11 752 740 590 21 498 324 298 2 _ .... 1,040 10, 100 217 12 1,250 637 372 22 389 269 297 3.. 1,020 9,500 299 13 1,290 501 281 23- 324 241 529 4 1,030 7,500 825 14 1,060 433 230 24 287 211 483 5...... 1,170 5,590 1,300 15 762 378 195 25 . 270 189 367 1,290 4,060 944 16 552 373 173 26 259 176 291 7 .. 1,380 2,880 577 17 518 358 157 27 259 174 446 8 1,210 1,930 1,200 18 631 314 146 28 484 179 1,870 9 . 771 1,210 1,360 19 727 351 141 29 2,250 187 2,260 10 540 804 1,010 20--- 646 420 235 30 4,210 182 1,740 31 167

Monthly mean c ischarge, in cubic feet per 928 1,858 634 Runoff, in acre-fe 55, 240 114,300 37, 710 Runoff, in inrhe. .. ______.. ______-_. __ . 1.24 2.56 0.84

TRINITY RIVER BASIN 53. NORTH CREEK NEAR JACKSBORO, TEX. Location. Lat 33°17', long, long 98°18', on left bank at downstream side of bridge on U.S. Highway 281, 1.5 miles upstream from Henderson Creek, 9.3 TEXAS AND ADJACENT STATES B71

miles northwest of Jacksboro, Jack County, and 14 miles upstream from mouth. Drainage area. 21.6 sq mi. Gage-height record. Water-stage recorder graph except May 19-22 and May 25 to June 6. Datum of gage is 1,016.33 ft above mean sea level, unadjusted (State Highway Department bench mark). Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Discharge for periods with no record of gage height estimated on basis of recorded range in stage and records for a nearby station. Maxima. April-June 1957: Discharge, 6,990 cfs 2:45 p.m. Apr. 28 (gage height, 24.45ft). August 1956 to March 1957: Discharge, 1,560 cfs Oct. 15, 1956 (gage height 12.13ft). Flood of May 3, 1956, reached a stage of 21.58 ft according to floodmarks.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1. ... 0 47 13 11 0 150 2.3 21 13 2.9 3.0 2...... 0 52 4 12..... 0 48 3.3 22 .1 2.6 2.8 3 0 219 6 13 0 276 2.7 23 88 127 28 4...... 0 86 50 14..... 0 22 2.1 24...... 4 46 3.2 5...... 0 19 ' 180 15 0 6.5 1.9 25 502 979 2.0 6. ... 0 5.5 25 16 0 3.8 1.7 26 2,010 14 1.7 7 _ .... 0 3.4 5.3 17 0 119 1.6 27 100 6 1.6 8 __ .. 0 2.4 4.0 18 0 597 52 28 1,970 4 1.4 9 .... 0 187 3.0 19 0 8.9 5.3 29 137 2 1.2 10...... 0 14 2.7 20 .1 3.8 3.6 30 52 2 1.2 31 1

Monthly mean d ischarge, in cubic feet per 16.2 98.6 13.9 Runoff, in acre-feet 9,660 6,060 824

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April US April 26 Con. April 26 Con. 0 16.00 3,180 15.07 2,770 7:15. _ 3.80 .1 6:30 14.60 2,560 9:30 14.62 2,570 7:30... 6.24 134 7 12.67 1,790 10 14.00 2,320 7:45- 7.80 352 7:30 10.48 1,000 10:30-. - 13.00 1,920 8 9.00 600 8 -- ... 8.92 580 11 11.75 1,440 8:15- 10.50 1,010 8:30 8.08 406 11:30 - 10.50 1,010 8:30.- 11.68 1,420 9 ...... 7.57 312 12 9.70 775 8:45... 13.18 9 nnn 9:80 7.22 258 9...... 14.50 2,520 10 - 7.05 233 April W 9:30 . 16.00 3,180 11...... 6.87 208 10 16.45 3,390 11:15 7.10 8.40 470 10:30- 16.70 3,500 11:30- 7.50 301 2 7.50 301 11 17.07 3,670 12m. 8.65 520 3 7.00 226 11:30..- . 17.42 3,820 12:30 p.m. 9.45 712 5 6.17 127 12 17.30 3,770 9.12 630 8 5.52 71 1:30. 9.20 650 12m. 5.08 41 April K 2...... 9.60 750 4.72 18 2:30- 10.56 1 030 12 4.48 8.9 12:30 a.m.... . 16.55 3,430 3.. - ...... 11.50 1,360 1 14.95 2,710 3:30... 12.50 1,720 April 28 1:30... 13.42 2,090 4 ... 13.45 2,100 2 15.50 2,960 4:30.. 14.05 2,340 4.48 8.9 2:30__ ... 17.55 3,880 5- _ 14.67 2,590 6 4.37 5.9 2:45. 17.75 3,970 W) 15.20 2,820 7 4.34 5.3 3 .. 17.58 3,900 6 2,890 9 4.74 19 3:30 17.13 3,690 6:30.. 15.25 2,850 9:30.. 4.88 27 4 _ .... 16.90 3,590 7 _ 15.27 2,860 10 5.45 66 4:30 16.72 3,510 8 . 2,960 10:30-. 8.45 480 5:30 16.62 3,460 8:30- 15.35 2 890 11.. _ 16.50 3,460 B72 FLOODS OF 1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957- Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

Aprils-Con. May 14 Con. May 24 Con. 11:30 a.m ..... 5 440 4 pro ,10 K O7 40 12m...... 24.05 6,810 9 ...... 4 91 OQ 23.95 6,760 12m..- 4.77 20 2...... 24.28 6,910 4.68 16 2:30...... 24.42 4.21 3.2 6- ...... - 4.60 13 2:45...... 24.45 6,990 9 11 3...... 24.43 6 QQA May 17 10:30- 4 54 11 3:30...... 24.08 6,820 11 5 7ft OK 4.-.. _ ...... 23.30 6,470 12m- 4.16 2.6 11:30-- 8.00 390 4:30.... .- 21.60 5,700 4.13 2.2 12 9.68 770 5...... 18.80 4 CO 23 5:30... 15.90 3,140 10 6.92 215 6. .- .. 14.10 2,360 10:15- 9.10 625 6:30--. . 12.70 1 800 10:30- 10.27 941 11.20 i 9'%n 11.55 1,370 U 79 19 94 1,620 7:30. 10.55 1,020 11:30- 19 P.7 1:30-- 13.00 8 9.84 812 12 ...... 13.90 2 ...... 13.43 2,100 8:30. 9.08 620 9-115 13.48 2 19ft 9...... 8.64 518 May 18 2:30- 13.42 2,090 10 7.95 380 3 13.07 1,950 11 7.48 298 14.17 2 0Qfl 3:30---.. 1,680 12 7.12 243 4 .... 11.60 1,390 13.83 4:30- 10.63 1,050 May in 2 ...... 13.43 2,100 5 9.77 792 3 ...... 12.47 1,710 5:30.... 9.09 622 5.38 62 n ftl 1,460 6 9.90 830 5 ...... 11.08 1,210 6:30-.- 11.00 1,180 6...... 1 060 1,480 7 .... 10.03 869 8 13.86 2,270 5.00 35 8 9.06 615 8:30--. 2,540 5:30--.. . 5.75 89 9 .. 8.16 422 9 - 14.97 2,720 6. 7.10 240 7.42 288 2 73ft 6:30...... 8.29 ddS 6 OK 205 9:30... 14.86 2,670 7- ____ .... 9.45 712 12m.. .. 6.40 150 10 . 14.20 2,400 8:30-.- . 10.62 1,050 5 80 93 10:30- 13.40 2,080 11...... 9.18 6 ...... K 97 12.45 1,700 12m...... 8.23 436 9 5.02 36 11:30.-. 11.32 1,290 2 p.m... __ 7.10 240 12 4.82 23 12m...... 10.48 1,000 5:30..-.-.... 6.07 117 9.88 824 10 5.38 62 I,... __ _ . 9.50 725 12 5.20 49 2 ..... 8.82 555 K Kfi 74 3.... . 8.12 414 May 14 6 ...... 6.50 161 9 .... 5.40 63 4.87 26 12 4.85 25 12m...... 4.70 17 5.28 55

54. WEST FORK TKINITY RIVEK NEAR JACKSBORO, TEX. Location. Lat 33°17'30", long 98°04'40", on left bank at downstream side of bridge on State Highway 24, 4 miles downstream from North Creek, 7 miles upstream from Carroll Creek, 7 miles northeast of Jacksboro, Jack County, and at mile 660. Drainage ar ?a. 683 sq mi. Gage-height record. Water-stage recorder graph except 10 a.m. Apr. 26 to 7 p.m. Apr. 29. Graph was drawn on basis of outside gage readings made Apr. 27-29. Datum of gage is 873.98 ft above mean sea level, unadjusted (levels by State Highway Department). Discharge record. Stage-discharge relation defined by current-meter measure­ ments. TEXAS AND ADJACENT STATES B73

Maxima. April-June 1957: Discharge, 35,100 cfs about 2 a.m. Apr. 27 (gage height, 32.10 ft, from floodmark). March 1956 to March 1957: Discharge, 1,890 cfs June 5, 1956 (gage height, 17.27ft). Maximum stage known since at least 1900, that of Apr. 27, 1957. Flood of June 1941 reached a stage of about 30 ft; information from local resident. Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

I...... 1.2 5,920 660 11 0 1,680 160 21 632 2,860 137 2...... 8 2,940 711 12 0 2,020 198 22 706 2,140 127 3 . .6 2,880 407 13 0 1,980 230 23 998 895 124 4... _ .5 2,770 1,120 14 0 2,390 232 24 1,190 1,150 145 5---.. . .2 2, 510 2,670 15 0 1,920 220 25..... 1,380 3,000 122 6 .... 0 3,010 2,090 16 0 1,610 161 26 18, 700 4,160 134 0 2,490 1 790 17 0 1,000 144 27 29, 200 2,870 125 8 0 1,880 1,800 18 0 3,000 188 28 16, 100 2,350 115 9 0 1,540 1,070 19 0 4,490 424 29 15, 700 1,700 107 10...... 0 1,680 205 20 56 4,310 160 30 10,900 546 82 31 329

Monthly mean d ischarge, in cubic feet per 3,186 2,388 529 Runoff, in acre-fset 189, 600 146,800 31, 450

656087 O 62- B74 FLOODS OF 1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 19 April $8 Con May 19 Con 0 97 4ft 17,400 4 p.m___ ..... 22.05 4,980 12...... 21.91 4,770 April » April 29 May to 2 a.m 0 27.59 18,000 12m...... 4,370 3...... 2.75 13 12m...... 26.90 16,000 21.06 3,670 5...... 3.00 23 25.65 12,600 12m-...... 2.88 IB May 21 2.72 April SO 10...... 6.00 949 19.36 2,530 12...... 10.15 638 94 7* n onn 12 p.m...... 23.80 8,700 May 2S April 21 11.00 734 10.80 710 10 9.15 535 12 m__ ...... 22.35 5, 620 10.60 687 3,760 12...... 10.30 654 1 140 12m..... _ . 14.93 1,320 April 22 10 p.m...... 13.90 1,140 10 Q^ 2,720 19 14.60 1,250 10.20 643 20.64 3,180 12m--. 10.85 716 11.03 738 10 10.92 17.20 1,830 12. . 11.40 20.67 3,220 19.60 2,610 19.92 2 79ft 21.45 4,140 April 23 8 .... 20.52 3,050 12 22.47 5,650 12 ___ . _ ... 20.20 2,840 995 14.44 1,220 21.98 4,870 April $4 20.15 2 QOft 12 m...... 21.02 3,620 2,620 20.93 3,520 14.53 1 240 13.94 1 140 May 27 April 25 12m...... 19.02 2,410 12 p.m...... 19.46 2,560 18.98 2,390 12m...... 13.95 1,140 12 20.77 0 OOfl 14.05 1,160 9 ...... 16.90 5,760 6.75 310 11 20.20 2 840 12...... 21.40 4,080 20.85 3,420 12p.m...... 19.90 2,720 April 26 7.00 332 May 17 10 9.40 560 22.70 6,060 12.40 915 8...... 26.00 13,500 14 40 3,210 15.50 1,430 29.50 24,700 6 .. 18.00 2,050 12 32.00 34,700 May 18 19 18.72 2,300 April 27 18.00 2,050 June 6 10. 18.50 2,220 2 a.m...... 32.10 35, 100 19.10 2,440 12m...... 20.00 2,750 12m.... 30.80 29,900 91 Qft 4,870 20.38 2,930 12p.m...... 38.60 21,200 12 91 fifl A Q4fi 19.68 2,640 April 28 May 19 June 6 12m_-...... 26.40 91 (Yl Q A4A 17.80 1,990 5 p.m...... 25.50 12, 200 12m...... 4,760 12p.m...... 16.80 1,730

55. BRIDGEPORT RESERVOIR ABOVE BRIDGEPORT, TEX. Location. Lat 33°13'20", long 97°50'10", at left end of Bridgeport Dam on West Fork Trinity River, 2.0 miles west of Bridgeport, Wise County, 5.8 miles upstream from Big Sandy Creek, and at mile 626. TEXAS AND ADJACENT STATES B75

Drainage area. 1,114 sq mi. Gage-height record. Staff gage read once daily. Datum of gage is 0.06 ft above mean sea level, datum of 1929. Maxima. April-June 1957: Contents observed, 380,800 acre-ft May 26, 27 (gage height, 835.9 ft). 1932 to March 1957: Contents observed, 407,600 acre-ft Apr. 29, 30, 1942 (gage height, 836.2 ft). Remarks. Reservoir formed by a rolled-fill earth dam, containing a concrete service spillway with three 20-ft bays, two equipped with vertical-lift gates and the other left open. There are two emergency spillways of natural ground. Dam completed Dec. 15, 1931; storage began Apr. 1, 1932. Capacity, 270,400 acre-ft between gage heights 751.4 ft at bottom of three 48-inch outlet con­ duits and 826.1 ft at top of service spillway. Dead storage is negligible. Reservoir used for flood control and municipal supply for city of Fort Worth. Figures represent total contents. Capacity is based on a redetermination of reservoir capacity during fall of 1952. Capacity curve and record of daily gage heights furnished by Tarrant County Water Control and Improvement District No. 1.

Gage height, in feet, and contents, in acre-feet, at 7 a. m. of indicated day, 1957

April May June Day Gage Contents Gage Contents Gage Contents height height heignt

1...... 794.1 47, 090 830.8 321,600 833.4 351, 300 2...... 794.1 47, 090 832.0 335, 200 832.9 345, 600 3...... 794.2 47,480 832.4 339,800 832.9 345,600 4... .-__. ...__._._. 794.2 47,480 832.7 343,200 832.5 341, 000 5...... 794.3 47, 870 832.7 343,200 832.7 343, 200 6 ...... _ . 794.3 47, 870 832.7 343, 200 832.9 345, 600 7...... _ ...... 794.3 47, 870 832.4 339,800 832.8 344, 400 8_._.-_ ...... 794.2 47, 480 832.3 338, 600 832.5 341, 000 9 . _ 794.2 47, 480 832.3 338,600 832.2 337, 500 10. .. _ - 794.2 47, 480 832.2 337, 500 831.9 334, 100 u...... 794.2 47, 480 832.1 336, 400 831.4 328, 400 12...... 794.2 47, 480 832.0 335, 200 831.0 323,800 13...... 794.2 47, 480 832.0 335, 200 830.6 319, 300 14...... 794.2 47, 480 832.0 335, 200 830.4 317, 100 IS...... 794.2 47, 480 832.0 335,200 830.2 314,800 16...... _...... 794.2 47, 480 831.9 334, 100 830.0 312, 600 17.... .-...... 794.2 47, 480 831.7 331,800 829.7 309, 300 18...... 794.2 47, 480 831.8 332, 900 829.5 307, 000 19 ...... 794.2 47, 480 832.3 338, 600 829.3 304, 800 20...... 794.2 47, 480 832.5 341, 000 829.2 303, 700 21 ...... 794.6 49. 040 833.1 347,900 829.0 301, 500 22...... 795.1 51,010 833.4 351, 300 828.8 299, 300 23...... 795.7 53,470 833.4 351, 300 828.6 297, 100 24 ...... 796.7 57,640 834.1 359, 500 828.6 297,100 25 ._.__..____._____ 797.2 59, 780 834.6 365, 300 828.5 296, 000 26...... 800.1 73, 310 835.9 380,800 828.4 295, 000 27 ...... 812.1 147,800 835.9 380, 800 828.4 295, 000 28 ...... 820.2 213, 800 835.6 377,200 828.4 295, 000 29...... 825.2 261, 200 835.2 372, 400 828.4 295, 000 30...... 828.4 295,000 834.6 365,300 828.3 293, 900 31 ...... 833.9 357, 100 +247, 900 +62, 100 -63,200 B76 FLOODS OF 1957

56. BIG SANDY CREEK NEAR BRIDGEPORT, TEX. Location. Lat 33°13', long 97°41', on downstream side of bridge on State Highway 24, 1.9 miles upstream from Turkey Creek, 4.4 miles upstream from mouth, and 5 miles east of Bridgeport, Wise County. Drainage area. 332 sq mi. Gage-height record. Water-stage recorder graph except June 12-20. Datum of gage is 727.44 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation denned by current-meter measure­ ments below 22,000 cfs. Discharge June 12-20 estimated on basis of records of weather and records of nearby station. Maxima. April-June 1957: Discharge, 29,300 cfs 10:30 p.m. Apr. 26 (gage height, 13.05 ft). 1936 to March 1957: Discharge, 53,000 cfs June 10, 1941 (gage height, 15.69 ft, from floodmark). Remarks. Flow affected by storage in Amon Carter Reservoir (capacity, 32,290 acre-ft) drainage area, 103 sq mi.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 .-_ _ 9 809 1,130 11 0 541 41 21 315 987 0 2...... 0 353 3,680 12..... 0 820 30 22..... 718 344 0 3 97 215 4,100 13 0 794 20 23 732 636 0 4. ... 28 260 968 14 0 1,380 13 94 950 1,420 4.3 5...... 12 250 1,160 15..... 0 862 9 25 249 7,500 27 6. ... 0 158 352 16..... 1.2 304 6 26..... 9,940 4,940 0 7... . 0 92 183 17 1.3 132 4 27. . 13,80& 1,820 0 8..-.--. 0 75 122 18 1.0 699 3 28.. 3,980 879 0 9 0 140 76 19 6.9 2,330 2 29. . 2,720 322 0 10 . 0 613 53 20 17 1,940 1 30 1,680 178 0 31 871

Monthly mean d ischarge, in cubic feet per 1,175 1,054 399 Runofi, in acre-feet ___ 69,910 64,790 23,770 TEXAS AND ADJACENT STATES B77

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1967

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April m April 28 May 25 Con 3.88 8.6 9.53 4,440 10 a.m_____ ... 10.45 10,500 9 43 3,620 12m.. 10.34 9,860 April HI 9.36 2 QQO 10.43 10,400 12...... 9.90 7,360 4.06 13 2...... 6.70 150 May 26 3...... 7.68 9Q9 12m...... 9.35 2,960 11 ...... 7 97 372 9 23 1 ' 980 12m..... 9.53 4,880 12m...... 7.85 340 9.28 2,650 4 p.m...... 7.73 313 April 30 12 fi 1O 417 May 27 12m.___ .... 9.13 1,760 April n 8.95 1,210 12m... _ .. 9.17 1,640 Q 0^ 1,350 8.60 790 May 17 10...... 8 77 950 12m...... 8.75 930 6.30 123 8.30 530 12 p.m...... 7.54 275 12...... 8 04 392 May 18 May SI April US 6.82 163 5 __ ...... 7.31 7.93 361 7 90 353 7. _ 7.68 302 7 ...... 8.54 742 7...... 8.37 565 10 8.18 477 12m.. 8.83 1,010 12m...... 8.73 910 12m...... 8.39 8.93 1,130 8.74 920 8.91 1,100 9 - 8.93 1,130 8...... 8.72 900 12 __ ...... 9.22 1,740 12 8.82 1,000 12 -_ ...... 8.74 920 May 19 June 1 April 24 9.42 2,680 8.65 835 12m...... 8 92 1,110 9.32 2,220 12m... .. 9.01 1,290 8.74 920 9.07 1,380 12 8.88 1,070 April US 12m...... 9.27 7 90 353 9 15 1,600 9...... 7 44 240 12m...... 8.81 991 7.13 185 May 21 9.31 3,170 6.70 150 6...... 9.85 7,080 9:30...... 6.12 111 12m...... 8.74 920 7:30. 10.30 9,620 10...... 6.35 126 8.25 508 12 10.20 9,020 11 . 7.00 173 12 _ .... 7.67 282 12m...... 7.80 328 9.69 5,630 7.27 214 12m...... 9.37 3,390 8.13 457 8.96 1,160 2...... 8.47 689 May US 3...... 9.18 1,870 4 L .... 9.56 4,570 6.83 116 9 72 5,820 12m...... 6 97 175 12m...... 8.47 689 10.27 8,790 7.25 211 8.48 696 6...... 10.88 12,600 3 ...... 7.87 346 8 ... 9.00 1,210 7. _____ ... 11.42 16,100 5...... 8.55 750 12...... 9.20 1,700 8...... 12.18 21,500 7 ... .. 9.26 1,940 9...... 12.80 26,900 9 13 1,570 10:30...... 13.05 29,300 12...... 12.84 27,200 9.20 1,700 12m.. 8.95 1,150 April 27 12 m__ ...... 9.08 1,400 8.58 774 1,550 12...... 8.27 516 12.06 20,600 12 8.87 1,060 9 . . 11.23 14,900 12m...... 10.95 13,000 10.40 9,560 12m..... 7.75 328 9. . 10.00 7,300 9.36 3,350 7.25 234 12 9.77 6,080 7 ...... 9.76 6,600 B78 FLOODS OF 1957

57. WEST FORK TRINITY RIVER NEAR BOYD, TEX. Location. Lat 33°05'05", long 97°33'30", on right bank at downstream side of bridge on Farm Road 730, 0.6 mile northeast of Boyd, Wise County, 3.5 miles downstream from Boggy Creek, and at mile 602. Drainage area. 1,729 sq mi. Gage-height record. Water-stage recorder graph except June 26, 27. Datum of gage is 660.57 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Discharge for period with no record of gage height estimated on basis of records of weather and engineer's notes. Maxima. April-June 1957: Discharge, 24,400 cfs 1 p.m. Apr. 27 (gage height, 21.60ft). 1947 to March 1957: Discharge, 6,650 cfs July 28, 1950 (gage height, 18.20 ft) at former site 2.2 miles downstream at datum 5.48 ft lower. Flood in April 1942 reached a stage of 20.6 ft; information from State High­ way Department. Flood in 1908 was highest since at least 1880 and reached a stage of about 25 ft; information from local residents. Remarks. Flow partly regulated by Bridgeport Reservoir, 21 miles upstream. Flood of Apr. 27, 1957, originated downstream from Bridgeport Reservoir

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1...... 3.5 3,020 4,220 11 1.8 3,710 2,870 21- 427 3,150 1,140 2...... 8.8 2,960 5,050 12 1.7 3,860 2,710 22. .... 387 3,180 1,060 3 87 3,080 8,900 13 1.6 3,950 2,460 23 1,130 4,190 966 4...... 83 3,220 6,500 14 1.6 3,770 2,210 24. 1,100 4,790 905 5 .... 46 3,350 4,100 15 1.4 3,680 1,930 25.. ... 657 13,000 501 6...... 19 3,410 3,950 16 1.2 3,710 1,770 26 4,150 15,000 324 7...... 8.0 3,530 3,500 17 1.2 3,470 1,590 27- 18,600 8,440 288 8.. .. 5.0 3,560 3,300 18 1.3 3,080 1,440 28 11,200 5,800 258 9...... 3.3 3,560 3,180 19 13 3,350 1,350 29 4,890 5,220 251 10...... 2.3 3,500 3,000 20 51 3,300 1,240 30 3,590 4,530 244 31 4,360

Monthly mean d ischarge, in cubic feet per s 1,549 4,540 2,374 Runoff, in acre-feiCt- 92,180 279, 100 141,200 TEXAS AND ADJACENT STATES B79

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 19 April 26 May 25 Con. 12 p.m...... 2.63 7.3 10.00 822 18.05 7,700 2.__ .... 11.50 1,060 8 ... 18.52 10,000 April 20 5...... 14.67 1,690 19.45 14,700 1...... 15.20 1,810 20.62 20,100 2.70 9 0 10 14.94 1 7^0 12 20.60 20,000 2...... 3.13 33 15.62 1,930 7...... 3.63 66 16.55 2,550 May K 12m...... 3.58 62 4 . 17.08 3,590 10p.m...... 3.28 42 5 ...... 17.37 4,500 19.66 15,800 12..... ___ . 3.47 54 6 .... - 17.88 6,850 12m ...... 19.43 14,600 8 ...... 18.42 9,550 18.58 10,400 April 21 12. 19.08 May 27 5.05 April 27 2..... __ .... 7.12 408 12m..... 18.15 3 . 7.42 444 18.86 11,800 17.90 4 ..... 7.20 418 Q 19 600 7...... 5.70 244 21.60 9d inn 8. - -- 5.45 218 20.99 21, 600 10____. _._._-. 5.92 266 19 20.13 17 1 900 17.28 4,190 12 m...... 7.50 454 8.60 602 April 28 6...... 8.52 12..-..- . 7 70 492 1Q 90 13, 400 17.24 4,070 18.67 10,800 17.30 4,250 April 2% 17.76 6 ocfl 5...... 17.54 5,180 6. . 17.90 6,950 12m...... 6.73 362 8 18.10 7,950 7p.m. ... . 6.42 324 12 , 17.85 6,700 12...... 6.90 382 12m... 17.42 4 680 17.20 April 2S 17.63 5,600 1 a.m...... 7.33 434 9 ...... 17.96 7,250 2 ...... 9.50 747 17.00 3,350 12 m_._ ...... 18.58 10,400 3 ...... 11.47 1,060 18.92 12,000 4 11.98 1,150 12 . 18.40 9,450 7 ...... 11.38 1 040 10...... 12.40 1,220 12m... 17.00 3,350 12m...... 12.46 1 240 17.66 12.37 1,220 17.50 5,000 18.10 7,950 12...... 1,270 8 ...... 17.82 6,550 12 m...... 17. 59 5,400 April 24 17.52 5.090 17.46 4,840 8...... 17.75 6,200 12m...... 11.87 1,130 8 ...... 17.67 5,800 12 17.52 5,090 12p.m...... 10.42 886 17.53 5,140 17.32 4,320 April 25 12.. 17.20 17.19 3,920 12m__._ _ 9.07 682 17.30 4,260 10p.m...... 7.08 416 11...... 7.08 17.37 4,500 12...... 7.55 474 4...... 17.62 5.550 B80 FLOODS OF 1957

58. EAGLE MOUNTAIN RESERVOIR ABOVE FORT WORTH, TEX. Location. Lat 32°52/35",. long 97°28'15", at right end of main dam on West Fork Trinity River, 3.0 miles downstream from Ash Creek, 4.1 miles down­ stream from Walnut Creek. 14.6 miles northwest of Fort Worth, Tarrant County, and at mile 583. Drainage area. 1,974 sq mi. Gage-height record. Staff gage read once daily at 8 a.m. Datum of gage is at mean sea level, datum of 1929. Maxima. April-June 1957: Contents observed, 292,200 acre-ft May 27 (eleva­ tion, 658.9 ft). 1934 to March 1957: Contents observed, 333,500 acre-ft Apr. 26, 1942 (elevation, 659.9 ft). Remarks. Reservoir is formed by a composite rolled-fill and hydraulic-fill earth dam, containing a concrete service spillway with four 25-ft bays, three of which are equipped with vertical lift gates and the other left open. There is an emer­ gency spillway of natural ground. Dam completed Oct. 24, 1932, and storage began Feb. 28, 1934. Capacity, 182,700° acre-ft between elevations 599.9 ft at bottom of four 48-inch outlet conduits and 649.1 ft at top of service spillway. Dead storage is negligible. Reservoir used for flood control and to maintain level of Lake Worth from which city of Fort Worth derives its municipal supply. Figures represent total contents. Capacity since Oct. 1, 1951, is based on redetermination of reservoir capacity during fall of 1952. Capacity curve and record of daily elevations furnished by Tarrant County Water Control and Improvement District No. 1. Elevation, infect, and contents, in acre-feet, at 8 a.m. of indicated day, 1957

April May June Day Elevation Contents Elevation Contents Elevation Contents

I-...-..-...- __ . _ ----- .. 631.9 69, 230 648.8 180, 200 656.4 261, 700 2.... _ ...... _ ..... _ .... 631.9 69, 230 649.4 185,600 656.0 256, 900 3...... 632.4 71,660 650.0 191, 400 656.1 258, 100 4- . ___ .. _ . _ --.. _ ... 632.6 72, 640 650.5 196,400 656.6 264, 100 5.. . _ 632.7 73, 130 650.8 199, 400 656.6 264, 100 6... _ ...... _ - _ . _ .... 632.6 72, 640 651.1 202, 400 656.2 259,300 7...... 632.6 72, 640 651.4 205, 400 655.8 254.500 8.-. 632.6 72, 640 651.4 205, 400 655.3 248, 500 9.. .. . 632.6 72,640 651.5 206, 400 654.8 242, 600 10...... 632.6 72,640 651.7 208,400 654.3 236, 800 11.. .._ 632.6 72, 640 651.8 209, 400 653.9 232, 300 12., __ ..... __ ..... ___ .. 632.6 72, 640 652.0 211, 400 653.6 229, 000 13...... 632.4 71, 660 652.3 214, 700 653.2 224, 600 14 632.3 71, 170 653.1 223, 500 652.8 220,200 15 632.3 71, 170 653.2 224, 600 652.5 216, 900 16....-...... 632.3 71, 170 653.2 224, 600 652.1 212, 500 17...... 632.3 71, 170 653.2 224,600 651.8 209, 400 18...... 632.3 71, 170 653.4 226, 800 651.5 206, 400 19...... 632.3 71, 170 653.4 226, 800 651.2 203, 400 20 632.5 72, 150 653.1 223, 500 650.9 200, 400 21 . 632.7 73, 130 653.0 222, 400 650.6 197, 400 22 . 632.9 74, 110 652.9 221, 300 650.3 194, 400 23 633.4 76, 600 652.8 220, 200 650.1 192, 400 24 634.0 79,600 654.2 235, 100 649.9 190, 400 25...... 634.5 82,200 655.2 247, 300 649.6 187,500 26 635.5 87,650 658.5 287, 200 649.3 184, 700 27-. 639.1 108, 700 658.9 292, 200 649.2 183, 700 28 643.8 140, 800 658.4 285,900 649.2 183, 700 29.. 646.6 162, 100 657.9 279, 700 649.1 182, 700 30 647.9 172, 700 657.3 272, 500 649.2 183, 700 31 ...... 656.9 267, 700 Change in contents, acre-feet-­ +103, 900 +95, 000 -84, 000 TEXAS AND ADJACENT STATES B81

59. CLEAR PORK TRINITY RIVER NEAR ALEDO, TEX. Location. Lat 32°38'25", long 97°33'50", on left bank 3 miles downstream from Turkey Creek, 3}<2 miles upstream from bridge on U.S. Highway 377, 4 miles southeast of Aledo, Parker County, and 11.8 miles upstream from Benbrook Dam. Drainage area. 246 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 723.33 ft above mean sea level, datum of 1929 (U.S. Army Corps of Engineers bench mark). Discharge record. Stage-discharge relation defined by current-meter measure­ ments below 17,500 cfs. Maxima. April-June 1957: Discharge, 34,000 cfs 8:30 p.m. May 25 (gage height, 29.00 ft). 1947 to March 1957: Discharge, 15,900 cfs May 17, 1949 (gage height, 25.00 ft). Maximum stage known since at least 1858, about 34 ft between Apr. 25 and May 9, 1922, from information by local residents. Remarks. Flow partly regulated by reservoir of city of Weatherford (capacity, 19,500 acre-ft). Flow from 57.9 sq mi above this station was partly controlled by 24 flood-detention structures with a total combined capacity of 18,085 acre- ft below the spillway crests, of which 14,842 acre-ft is flood-water detention capacity and 3,243 acre-ft is sediment-pool capacity.

Mean discharge, in cubic feet per second, 1'957

Day April May June Day April May June Day April May June

1 . 6.2 161 431 11 0.7 69 198 21 237 77 102 2--.- 3.5 146 518 12 1.1 311 185 22 24 69 102 3 164 2,020 537 13 1.2 2,170 173 23 251 1,370 102 4 8.9 721 1,260 14. 1.7 441 153 24 71 2,060 102 5 ... 3.2 138 1,120 15 1.2 138 142 25 33 13, 100 99 6 1.4 91 856 16 1.7 108 124 26 754 7,000 99 7 . 1.1 76 397 17. _ . 1.2 83 115 27 2,060 1,310 97 8 1.0 67 302 18 1.2 480 113 28 864 756 97 9 .9 90 249 19 33 193 110 29 1,320 560 96 10 .8 76 219 20 16 100 102 30 428 507 94 31 487

Monthly mean c ischarge, in cubic feet per s 210 1,128 276 Runoff, in acre-fc et 12, 480 69, 370 16, 450

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 85 April 27 April 29 12p.m. -- 2.84 23 13.83 3,270 9.43 1,950 7 14.05 3,330 12m_...... 7.78 1,310 April 26 12m 10.80 2,390 6 p.m...... 5.65 627 4 a.m ___ __ 2.83 22 908 12---. . 5.15 487 5 3.20 57 8 . 5.20 501 7 . 3.52 100 12..- ______4.60 333 April SO 8 ..... 4.10 210 9--.. . . 4.90 417 5.05 459 12m .. . 4.36 270 7 .... 5.85 683 5 p.m 4.95 431 4.05 198 4.92 423 6 ..... 6.30 815 9 ...... 6.90 1,000 4.03 194 8 9.05 1,800 12m...... 7.05 1, 050 10. .. 6.38 840 11-..--.. 13.90 3,290 8 ...... 7.55 1,220 12 13.97 3.320 12...... 10.50 2.300 12p.m__. .... 3.75 138 B82 FLOODS OF 1957

Gage height, infect, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Qage Discharge Hour Gage Discharge height height height

May % May 13 Con. May 25 Con. 12m. . 3.62 116 10.45 2 OOA 29.00 34,000 9p.m...... 3.54 103 12 ...... 7.60 9 ...... _ 28.85 33, 100 11 4.40 97Q 12 22, 300 12...... 6.80 970 May 14 May 26 5.38 12m...... 4.42 284 3 a.m ...... 24.00 12,900 12.90 2,990 3.90 167 6 - 21.90 7.950 2...... 13.97 3,310 12 m...... 19.70 5.900 6...... 10.00 2,140 16.20 4.080 8...... 7.95 1,370 7 12.35 2.840 12m... _ ... 6.90 1,000 12p.m...... 3.27 65 12...... 9.50 1,980 6.18 4. ... 6.30 5 ... 8.10 1,420 6...... 12.25 2,810 3.25 63 12 m______7.45 1,180 8. ___ ... . 13.57 3 1QA 9 ...... 3.79 145 6.50 899 12. _ ...... 11.35 12 m . 3.52 100 7.30 1.130 2..... _ ..... 11.55 2.610 4...... 10.25 2.220 12 p.m______5.02 487 3 a.m ...... 8.50 1.580 6...... 13.05 3.040 6 ...... 6.55 892 8.1 ...... 14.00 3.320 12m...... 4.85 403 12...... 13.20 3,080 12p.m ... . 3 QQ 183 4.90 456 May U 9 5.25 549 11 8.45 1,560 12.75 2,950 12 m__.__ 10.45 2,280 3.62 116 14.10 3,350 7.70 1,280 8...... 14.05 3,340 3... 7.50 1,210 May IS 10...... 2,890 7_ ...... 10.08 2,170 9.15 1,840 12 9.38 1,930 12m...... 3.57 108 6.85 986 5p.m...... 3.50 97 12 . 5.05 459 6...... 6.10 753 7...... 5.70 fill 7.60 1,250 8...... 5.00 12 m _ ..____ 6.22 812 9...... 5.20 501 4.88 411 1 p.m ...... 6.15 793 10...... 7.20 3...... 5.20 501 5_ ...... __ 7.19 1,110 12..-...... 8.48 1,580 5...... 8.65 1,640 10...... 6.05 762 7...... 12.05 2,750 12______._. 7.30 1,140 May IS 9...... 15.15 3,690 10...... 19.05 5,480 June 6 2a.m...... 8.10 1,420 12 m . . ... 20.80 6,700 5...... 9.30 1,900 23.95 12. 800 7.95 1,370 9...... 11.85 2,700 4___. ______26.65 22,500 6 7.48 1,200 12m ...... 12.55 2,890 6-______._ 28.55 31,600 12 m _ _._--. 5.83 705 1 p.m.. 12.68 2.930 8.-______-_ 28.85 33, 100 12 p.m ...... 5.03 487

6O. BENBROOK RESERVOIR NEAR BENBROOK, TEX. Location. Lat 32°39', long 97°27', in intake structure of Benbrook Dam on Clear Fork Trinity River, 2.5 miles south of Benbrook, Tarrant County, 3.5 miles upstream from Marys Creek, and 15 miles upstream from mouth of Clear Fork. Drainage area. 433 sq mi. Gage-height record. Water-stage recorder graph.. Datum of gage is at mean sea level datum of 1929, Fort Worth supplementary adjustment of 1942 (levels by U.S. Army Corps of Engineers). Maxima. April-June 1957: Contents, 185,000 acre-ft 6 a.m. June 6.(elevation 713.35 ft). 1952 to March 1957: Contents, 20,890 acre-ft May 5-7, 1956 (elevation, 668.90ft). TEXAS AND ADJACENT STATES B83

Remarks. Reservoir is formed by rolled earth-filled dam with a 500-ft uncon­ trolled concrete spillway. Outlet works consist of concrete conduit, 13-ft in diameter, controlled by two 6.5- by 13-ft broome-type gates and two 30-inch steel pipes controlled by slide gates. Deliberate impoundment of water began Sept. 29, 1952. Capacity, 258,600 acre-ft at crest of spillway (elevation, 724.0 ft), 164,800 acre-ft at crest of 100-ft notch in spillway (elevation, 710.0 ft), and 88,250 acre-ft at top of conservation storage (elevation, 694.0 ft). Reservoir built for flood control, navigation, and low-flow regulation. Records furnished by U.S. Army Corps of Engineers.

Elevation, in feet, and contents, in acre-feet, at 12 p.m. of indicated day, 1957

AI ril May June Day Elevation Contents Elevation Contents Elevation Contents

1.. ___ ...... 665.50 16, 000 687. 60 65,980 712. 10 177,300 2...... -.- ... 665. 51 687 90 712. 46 3 ._. . __ 666. 41 17,200 712. 50 4...... 666.44 17, 240 692. 39 82, 310 713.20 184,000 5...... -. .. 666 44 17 240 692. 65 713.34 6...... 666.43 17, 230 692.84 83,940 713. 18 183,900 7... . . __ 666.42 17, 210 692 97 84,420 712. 93 182, 400 8...... 84 940 712. 67 9...... 666.39 693. 41 712. 45 179, 400 10...... 666.38 17, 160 693. 56 86, 610 712. 25 178,200 11... - 693. 73 87,240 712. 07 177, 100 12... ___ __ 666.36 17, 130 695. 67 94,690 711. 93 176, 200 13...... 666.35 17, 120 698. 24 105. 300 711. 72 175, 000 14...... 666.34 698. 64 711. 44 173, 300 15.... _ . ___ ..... _ ----- ... 666.35 17, 120 711. 36 172, 800 16--. 666.35 711.28 172, 300 17...... 666. 35 17, 120 107, 900 711. 22 172, 000 18...... 666.35 17, 120 109, 200 711. 16 171, 600 19. _ ...... _ . _ ...... 667.64 1C QK(\ 711. 12 171, 400 20...... 668. 00 710. 85 169, 800 21...... 21,880 fiQQ 70 107,600 710. 26 166, 300 22.-. . 669.62 22, 080 698. 56 106, 700 709. 34 161, 000 23.- ... 672. 06 115, 800 708. 21 154, 600 24 673. 37 29, 010 701. 73 121, 100 706. 93 147, 500 25... 29, 580 707. 45 705. 55 140,200 26...- ...... 680.46 45, 350 710. 22 166, 100 704. 00 132, 200 27 fiCO fi7 C1 Oft A 710. 73 702. 35 124, 000 28 684.89 170, 700 700.63 115, 900 29...... 686. 47 62, 410 711. 17 171, 700 698. 83 107, 800 30 687.22 64,760 711. 55 174, 000 696. 96 99, 900 31...... 712. 07 177, 100

Change in contents, acre-feet.. +48, 860 +112,340 -77,200

61. CLEAR FORK TRINITY RIVER NEAR BENBROOK, TEX. Location. Lat 32°39'54", long 97°26'30", on left bank 1>'2 miles downstream from Benbrook Dam, 1.7 miles southeast of Benbrook, Tarrant County, and 2.9 miles upstream from Marys Creek. Drainage area. 435 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 604.22 ft above mean sea level, datum of 1929 (U.S. Army Corps of Engineers bench mark). Discharge record. Stage-discharge relation defined by current-meter measure­ ments. B84 FLOODS OF 1957

Maxima. April-June 1957: Discharge, 4,350 cfs 4 p.m. June 26 (gage height, 11.28ft). 1947 to March 1957: Discharge, 82,900 cfs May 17, 1949 (gage height, 28.72 ft), from rating curve extended above 11,000 cfs on basis of velocity-area studies and slope-area measurement of peak flow. Maximum stage known since at least 1922, that of May 17, 1949. Remarks. Flow regulated since September 1952 by Benbrook Reservoir (con­ trolled capacity, 164,800 acre-ft). First uncontrolled spill occurred May 26, 1957.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 . 1.4 2.5 788 11 0.2 1.2 711 21. 21 641 1,810 2...... 4 1.7 964 12...... 2 23 580 22 1.4 755 2,900 3 ... . 4.2 5.8 1,100 13 .2 18 764 23 32 389 3,450 4...... 5 2.0 1,420 14 2.0 2.2 957 24 13 25 3,810 5 . ... .3 1.5 1,820 1.2 39 264 25 3.2 79 3,950 6 .3 1.1 1,800 16 1.2 140 233 26 120 19 4,150 7 .3 1.1 1,560 17 1.1 464 204 27 14 35 4,280 8 _ . ... .3 1.0 1,310 18 .7 690 180 28 28 104 4,160 9...... 3 2.5 1,100 19 27 670 165 29 5.0 173 4,060 10 .2 1.0 892 20 1.0 655 669 30 2.8 240 4,060 31 772

Monthly mean c ischarge, in cubic feet per 9.45 192 1,804 Runoff, in acre-f iet 562 11, 810 107, 300 TEXAS AND ADJACENT STATEiS B85

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May 27 June 4 Con. June 21 12p.m ...... 3.57 73 6.55 1,220 5.92 876 12 m--_ . 6.70 1,300 11-... . 8.19 2,150 7.36 1,670 12m-.--.-... 8.20 2,160 12...... 7.54 1,770 8.16 2,140 12m.- ._ . 3.81 106 5 ...... 8.72 2,490 12p.m...... 4.00 138 12-...... 8.63 2,430 May 89 7.59 1 790 7.80 1,920 12p.m...... 4.30 204 3...... 7.67 1,840 8.59 2,400 12 ...... 7.66 1,840 12m-.-- .... 9.85 3,310 May 30 12p.m...... 9.68 3.180 June 12 12m...... 4.40 230 4.46 247 5.26 coo 10...... 4.75 337 9.62 3,140 12... _ ...... 4.85 372 12m.-- 10.36 3,690 10.32 3, 660 May 31 12m.... . 5.16 494 5.20 511 2 a.m __ . . 5.55 675 3 ...... , 6.00 920 6..:...... 5.80 6-. ...-. 6.56 1 OQfl 10.25 3,610 12m...... 5.80 810 12 6.45 1,170 12m.... 10.72 3,960 12p.m...... 5.78 799 10.76 3,990 12-...... 10.70 3,940 June 1 12m..-..-... 6.24 1, 050 12p.m...... 5.78 799 7.04 1,490 5...... 6.95 1,440 12m...... 10.60 3,870 June 2 6-...... 4.85 372 10.60 3,870 8 4.62 294 5 10.84 4,050 12m...... 5.73 772 12...... 4.58 282 12 10.84 4,050 6.00 920 2...... 7.20 1,580 5...... 6.28 1,070 12...... 6.34 1,110 4.12 162 12m... 10.74 3,980 11.28 4,350 JuneS June SO 12 11.23 4,320 12p.m...... 6.32 1,100 4.11 160 6...... 4.35 217 June 4 8...... 5.05 448 11.06 4,210 10...... 5.65 728 5 a.m...... 6.33 1,100 12m...... 6.14 497 7 _ ...... 6.55 1,220 6.00 920 B86 FLOODS OF 1957

62. CLEAR FORK TRINITY RIVER AT FORT WORTH, TEX. Location. Lat 32°44'02", long 97°21'33", near right bank on downstream side of right pier of bridge on Vickery Boulevard at Fort Worth, Tarrant County, 100 ft upstream from East-West Expressway bridge, 310 ft downstream from Texas and Pacific Railway bridge, 3 miles upstream from mouth, 5 miles down­ stream from Marys Creek, and 10 miles downstream from Benbrook Dam. Drainage area. 526 sq mi. Gage-height record. Water-stage recorder graph except 7 p.m. June 1 to 1 p.m. June 2, for which graph was drawn on basis of recorded range in stage. Datum of gage is 532.91 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 14,200 cfs 2:45 p.m. May 25 (gage height 18.10ft). 1924 to March 1957: Discharge, 107,000 cfs May 17, 1949 (gage height, 28.20 ft), from rating curve extended above 16,000 cfs on basis of contracted- opening measurement of peak flow. Maximum stage known since at least 1900, that of May 17, 1949. Remarks. Flow largely regulated by Benbrook Reservoir.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 49 210 1,280 11 2.8 67 1,040 21 793 740 1,640 2...... 19 173 1,700 12..... 2.8 1,010 914 22 73 786 2.900 3...... 416 1,400 1,550 13 .. 2.8 1,480 969 23 1,260 2,840 3,620 4...... 38 363 2,780 14..... 2.8 202 1,350 24 489 1,370 3,890 5...... 17 143 2,790 15..... 2.8 143 527 25 215 5,990 4,030 6...... 8.4 107 2,420 16..... 3.8 237 470 26 3,540 2,500 4,270 7 7.1 86 1,880 17..... 3.8 479 406 27 2,380 435 4,410 8. ... 3.8 73 1,630 18. . 4.8 1,050 332 28 - 1,980 362 4,350 9. ... 3.8 129 1,430 19..... 527 786 314 29 1,300 422 4,290 10 ... 2.8 73 1,230 20 71 758 810 SO ­ 314 462 4.240 SI - 994

Monthly mean discharge, in cubic feet per s 451 835 2,115 Kunoff, in acre-feet...... 26, 840 51, 310 125,900

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 18 April 20 April W 12p.m...... 2.65 5.9 12m. _ 2.83 -52 2.85 58 2.75 30 April 19 12 3.40 272 April 23 2.63 3.8 4..-. ____ . 2.85 55 April Zi 3.00 107 5 ...... 3.60 406 2 ...... 3.50 332 6 ...... 3.85 610 4 40 1,110 3 3.88 636 7 ...... 3.77 543 2 ...... 4.20 923 4 4.70 1,390 8.. ______. 4.20 923 3 ...... 6.00 2,840 5 . - 5.60 2,360 9...... 4.98 1,660 3:45-- 6.45 3,340 5:30- 5.68 2,460 10. 4.30 1,020 4 ...... 6.30 3,170 6 5.60 2,360 11 . - 4.85 1,530 5 5.80 9-. 5.35 2,070 12m. .- .. 4.75 1,440 6 ..... 5.05 1,740 5.22 1,920 2 p.m...... 4.00 740 9 3.90 653 4.40 1,110 4.... ____ .. 3.60 406 12m... 3.46 qns 6 3.80 568 6 ...... 3.37 257 3.14 158 9 ~ 3.50 332 12 3.07 132 12 . 3.02 114 12... -- _ - 3.33 237 TEXAS AND ADJACENT STATES B87

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Oage Discharge Hour Oage Discharge height height height

April U MayS May 23 Con 6 a.m __ .... 3.15 162 3 n7 13.10 9 99O 12m...... 3.30 222 5 ...... 3.50 332 6 7,490 1 p.m...... 4.10 831 6.. ... 4 f\A 776 7. -- 7 60 4 460 2 . 4.32 1,030 7 4.10 831 S on 2 790 3 4.18 905 10 3 QB 696 4 QC 4 ...... 4.02 758 3 Ofl KGQ 19 4 20 Q9°. 5...... 4.15 877 3 fin 406 6 4.30 1,020 4...... 3 fin 568 8...... 4.10 831 5 3 19 12...... 3.62 422 6...... A nn 740 3 fin eco 1...... 9.50 6,220 4-- ... 3.95 696 April 25 7:30 . 11.20 7,650 5 5.00 1 fton 8. - . 10.70 7,240 66. - 4,220 9 a.m ...... 3.28 214 9 S en 5,320 7- - 8 AK 5,270 12 m._ ...... 3.17 170 10 7.70 4 can 12p.m...... 3.03 118 12 - 4 40 1,110 Q 6.00 9 R4n 5.05 April 20 May 4 12 m...... 3.63 430 4 a.m __ . ... 3.00 107 3 KA Ofto 19 3 00 5 5.00 1,680 247 6 5.80 2,600 3.16 7_ 6.60 3 Ann 8 . 7.60 4,460 May 11 242 10 . 6.20 3,060 3 40 979 12m ___ ... 4.85 1,530 2 QC 90 4. 4 QB 1,630 2p.m...... 4.20 923 d 87 1,550 4 ...... 6.70 3,590 May IS 6 8.00 4 840 5-..-..- _ ... 8.00 1...... 10.35 fi (Un 6...... 7.75 4,600 12 m...... 2.96 01 9 in c fion 1...... 10.50 7,060 2.91 76 Q 7 40 8 12.65 8,840 6 6.50 10 7.75 4 600 8:30 12.75 8,930 6:30...... ft OR 3 sin 11.. 10.50 7 060 9...... 12.65 8,840 7- .. 6.60 3 4.Qn 12m.-. 11 000 10...... 12.20 8,460 6.35 3,220 16.70 19 7nn 12 10.45 7,010 9 6.44 S oon 17.70 1 °, Rnn 10 6.00 2 Gin fJ.AK 14,200 April 27 11 5.40 2 ion 16.60 19 finn 12 4.90 1,580 13.80 9 Ron 6 ...... 19 df\ 2a.m... _ ... 8.70 5,500 May 13 7. 7 490 4. .. . 5.90 8 Aft 5,410 12m.. _ -.-. 5.15 1,840 3.95 696 10. 5.85 2 cork 6p.m...... 4.78 1,470 6 - 3.60 Ana 12 5.68 2 ' 460 12 4.55 4 en 1 200 6.55 3 440 April 28 11...... 7 8n 4,650 11:30 7.90 4 740 5.63 2 400 9 a.m ...... 4.20 923 12m...... 4,410 2. Q OQ c nan 10 _ . _ . .... 5.14 1,830 5 AH 2 ocn n.On Q nn 4 840 11 5.10 1,790 4...... 4 en 1,200 Q en 5,320 12m.... 6.90 3,790 8 . 3.75 527 4. 9.08 5 QC.fi ip.m...... 7.63 4,490 12 . 3.47 314 5 8.20 5 nan 2 _ ...--. __ 6.75 3,640 6 6 fin 3,690 3...... 5.90 2,720 May 14 Q 5.75 2,540 6 5.62 2,380 5.40 on ooo 12 5.17 1,870 3 4 fift 1,370 151 19 4.10 001 April 29 May 22 May 27 12 m...... A fin i w\(\ 12p.m...... 3.95 696 d. 1 8 nne 3 ?n AQR 12m... . 332 April 30 May 23 3.51 339 6 a.m ...... 3.55 OfiQ 1,020 May 28 12p.m ...... 3.32 Q 2 KAf\ 9:15. 5.88 3.58 391 Mayl 10.. 5.70 2 /ion 12m....-.--. 4.83 12p.m...... 3.22 1SQ A KK 1 9fUl 2_. _ . _ .... 7.50 4 360 3.64 /IQQ May 2 3...... 10.50 4 ...... 19 fin ft Q?n May SO 12p.m...... 3.07 132 4:30...... _ . 13.30 9,400 12p.m...... 3.70 486 B88 FLOODS OF 1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Oage Discharge Hour Gage Discharge height height height

May 31 June 6 June 20 Con. 3a.m...... 4.18 905 5.52 2,260 4.57 1,270 6 ...... 4.20 923 11...... 5.51 2,250 12 4.54 1,240 9...... 4.39 1,100 12m...... 6.40 3,280 12m. __ .... 4.37 1 rtOA 6 95 3,840 12p.m...... 4.31 1,020 2...... 6.50 3,390 4...... 6.70 3,590 4.50 1,200 June 1 6...... 6.35 3,220 12m. 5.05 1,740 10. . .. 5.78 2,580 5.20 1,900 12m ...... 4.28 997 12 6.50 3,390 12 5.50 2,240 4.27 987 8 ...... S on 2 Gf\n 9...... 5.85 2 660 10...... 5.70 2,480 12:30 a.m.. ... 6.58 3,470 5.60 2,360 12...... 5.40 2,120 1 ...... 6.50 3,390 12m... 6.20 3,060 3...... 6.00 2,840 6.45 3,340 June 2 12m...... 5.50 2,240 12 6.45 3,340 5.32 2,030 6a.m . .... 4.50 1,200 12m.... __ . 4.32 1,030 2p.m ...... 4.46 1,160 6.45 3 ii.n 4 _ . __ .. 4.95 1,630 4.14 868 12m. 6.68 3,570 5...... 6.44 3,320 6.95 3,840 6 ...... 6.20 3,060 19 6 QA O 7QA 8 ...... 5.60 2,360 12...... 4.97 1,650 4.10 831 5 ...... 4.30 1,020 June 3 12 4.58 1,280 6.88 3,770 7.15 4,030 4.80 1,480 Tune 1JL* 12 7.15 4,030 12m...... 4.76 1,450 4p.m ...... 4.72 1,410 12m. .- 4.68 1,370 9...... 5.15 1,840 4.72 1,410 12...... 4.95 1,630 4. 5.00 1,680 7.12 4,000 5:30 5.07 1,760 8 7.28 4,160 June 4 7 4.95 1,630 12 7.28 4,160 9. ... . 4.45 1,150 1 a.m ...... 5.14 1,730 12 . 3.85 610 7...... 4 89 11...... __ 5.80 2,600 7.28 4,160 12m...... 6.55 3,440 5 - 7.60 4,460 6.00 2 QAf\ 3 AK 302 19 7 60 4,460 3 ...... 7.20 4,080 5...... __ ... 8.60 5,410 6...... 7.95 4 7Qft 9 ...... 6.10 2,950 3.47 314 7.50 4,360 12...... 5.70 2,480 12m.- .. 4.22 941

63. WEST FORK TRINITY RIVER AT FORT WORTH, TEX. Location. Lat 32°45'40", long 97°19'55", on left bank 125 ft upstream from Texas Electric Service Co. concrete dam, 980 ft downstream from center line of Paddock Viaduct (North Main Street) at Fort Worth, Tarrant County, 2,600 ft downstream from Clear Fork Trinity River, and at mile 559. Drainage area. 2,627 sq mi. Gage-height record. Water-stage recorder graph except May 30 to June 13, when graph was drawn on basis of many daily readings from telemark located in gage structure. Datum of gage is 519.24 ft above mean sea level, datum of 1929 (Texas Reclamation Department bench mark based on Coast and Geo­ detic Survey datum). Discharge record. Stage-discharge relation denned by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 26,800 cfs 4:30 p.m. May 25 height, 8.66ft). TEXAS AND ADJACENT STATES B89

1920 to March 1957: Discharge, 85,000 cfs Apr. 25, 1922, by slope-area measurement by city engineer of Fort Worth; gage height, 25.91 ft May 17, 1949, at site 1,200 ft upstream. Maximum stage known since at least 1900, that of May 17, 1949. Maximum stages have been affected by levee construction, levee breaks, and channel rectification. Remarks. Flow regulated largely by Bridgeport, Eagle Mountain, and Benbrook Reservoirs and by Lake Worth.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1...... 167 498 9,950 11 17 2,900 6,360 21. .... 1,610 5,020 4,150 2...... 43 362 10,200 12 . 15 3,760 5,870 22 . 160 4,880 4,780 3...... 794 1,730 9,840 13 13 5,580 5,570 23 1,870 7,590 5,340 4...... 111 899 11,100 14 13 4,250 5,650 24 737 7,920 5,710 5...... 40 900 11,700 15. . 15 3,980 4,610 25..... 395 16,700 5,650 6 26 1,320 11,000 16 . 24 3,920 4,150 26 4,510 23,700 5,510 7 22 1,720 9,600 17 22 4,050 3,850 27 2,180 12,600 5,240 8 .... 17 2,820 8,660 18 18 5,100 3,550 28- ... 1,440 12,300 4.7&0 9...... 17 3,140 7,850 19 986 4,960 3,290 29 928 11,600 4,430 10 15 3,040 7,080 20 147 5,100 3,290 SO ­ 620 10,700 4,120 SI. - ... 10,500

Monthly mean d ischarge, in cubic feet per s 566 5,921 6,429 Runoff, in acre-feet 33,660 364,000 382,600

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Qage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 18 April 23 April 27 0.60 1Q 198 3.60 4,560 2 1.35 508 6 2.65 2,420 April 19 3 1.70 900 8 2.16 1,570 4 - 2.25 1,720 12m- - 1.74 952 3 a.m .61 20 5 2.85 2,820 1.50 669 4 ... on 46 7 - 3.33 19 1.36 519 5 ...... 1.20 352 g 3 97 3 70A 7 1.74 QCO 12m-- 2 CO 2 Qon April $8 8 ...... 2.55 2 910, 2 1 1 1,530 9 ... 2.77 2 fifio. 1 ^P. 758 1.25 404 11 2.52 2,190 19 1.35 508 9 1.58 758 12m..- ..... 2.60 2,330 10 2.15 1,550 1.95 1,240 11 2.24 1,700 6 1.47 637 12m - 2.70 2,520 12 1.13 280 1.18 331 3.50 4,300 12m- - 1.15 300 4 2.75 2,620 April m 1.65 840 6------2.13 1,520 3 . 2.13 1,520 8 1.81 1,040 1.01 157 19 1.60 780 10 2.00 1,320 12m__ . .92 89 12 1.92 1.200 .86 63 11 1 00 147 A v\rif 4>Q 12 1.85 1,100 1.31 466 12m- - 1.18 331 1.55 724 April il 1.08 229 12m-- 1.63 816 1.90 1,170 1 a.m _ . __ 2.45 2,060 19 1.62 804 3 ...... 3,680 1.08 229 4..-. . _ ... 3.64 4,670 4 1 30 465 7 2.65 4,230 5- r 2.55 2,240 9 1,320 6 12 m 1.20 352 12m. 1.53 702 3.83 5,180 1.25 404 9. ... 3.84 5,210 May S 12 . 1.10 249 2.80 2,720 2.15 1,550 1.16 311 April 22 4 ...... 3.40 4,050 8 1.67 864 5 4.20 6,220 12m. 1.53 702 12m-.- 1 00 147 10 _ 5.58 11, 100 1.43 593 12 p.m.. __ .93 96 12 .. __ ... . 5.12 9.320 4- _ . _ .--- 2.17 1,580 656087 O 62 B90 FLOODS OF 1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May 3 Con. May 2S Con. June 1 6p.m.... __ 2.15 1,550 4.75 "8,020 12m...... 5.18 9,530 T...... 2.90 2,920 5.90 12,400 5.15 9,420 9...... 4.72 7,920 6.... _ ...... 6.55 15,200 6 .. _ ... 5.56 11,000 11...... 3.40 4,050 8 _ ...... 5.50 10,800 12...... 5.34 10,200 12 2.70 2,520 10..... _ .... 4.60 7,500 12 4.29 6,480 May 4 May 24 12m...... 5.12 9,320 2.06 5.21 9,640 6 - _ ..... 1.67 864 4.20 6,220 4.. ... 5.60 11,200 12m..... __ 1.54 713 5.... _ ... _ 4.42 6,890 7 ...... 5.70 11,600 12p.m...... 1.51 fisn 5.72 11,700 9...... 5.52 10,900 9 _ ... _ .... 5.65 11,400 12 5.40 10, 400 May 18 12 m.- ... 4.92 8,260 4.32 6,570 Junes 12m--. 2.98 3,080 2.98 3 AQfl 5.22 9,680 6 ...... 3.30 S fiflfl 8...... - 4.40 6,820 4.23 6,310 12 3 on 5,370 5. _ * __ .... t; 14 9 QQft 5.10 9,250 5.23 9,720 May IS g 6.30 14, 000 12m... _ ... 5.55 11,000 10...... 6.40 14,400 5.59 11,200 6 a.m ...... 3.32 3,850 12 m.- ... 7.20 18, 400 6 ...... 6.16 13,400 10...... 3.87 5,290 8.35 24,900 9 ...... 5.88 12, 300 12m...... 4.83 8,300 4:30...... 8.66 26,800 12 5.58 11, 100 4.90 8,550 7.. _ ...... Q on 6. __ ...... 3.95 5,510 10...... 7.55 20,200 12...... 3.67 4,750 12...... 7.32 19,000 5.56 11,000 May %% 12m ___ ... 5.75 11,800 5.94 12,600 12m...... 3.70 4,830 8.10 23,400 12 __ 5.75 11,800 6. _____ .... 8.00 22,800 May S3 12m...... 6.80 16,400 June 6 6.20 13,600 8a.m _ .. _ . 3.77 5,020 12 .. _ . 6.00 12,800 5.85 12,200 10 ...... 4.31 6,540 5.36 10, 200 12 m...... 4.03 5,730 May 31 1 p.m.... _ . 3.92 5,430 5.29 9,960

64. WEST FORK TRINITY RIVER AT GRAND PRAIRIE, TEX. Location. Lat 32°45'45", long 96°59'40", on left bank at upstream side of bridge on Belt Line Road, 1.3 miles northeast of Grand Prairie, Dallas County, 4 miles upstream from Bear Creek, 7 miles upstream from Mountain Creek, and at mile 515. Drainage area. 3,070 sq mi. Gage-height record. Apr. 1-18 staff gage readings made twice daily about 1.5 miles downstream from former site; Apr. 19-30 gage height graph based on occasional gage readings by engineers; May 1 to June 30 based on measurements to water surface made twice daily at present site. No gage-height record Apr. 1, 7-18. Datum of gage is 410.42 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 59,200 cfs 10 a.m. May 26 (gage height, 28.25ft). 1925 to March 1957: Discharge, 62,000 cfs May 17, 1949 (gage height, 28.00 ft, at site 0.6 mile southeast and at datum 2.57 ft higher), from rating curve extended above 36,000 cfs by logarithmic plotting. Maximum stage known since at least 1900, about 30.6 ft (former site and datum) in 1908 (probably May); information from local resident. Flood in TEXAS AND ADJACENT STATEiS B91

April 1922 reached a stage of 29.0 ft (former site and datum) according to floodmarks. Remarks. Flow largely regulated by Bridgeport, Eagle Mountain, and Benbrook Reservoirs and by Lake Worth and Lake Arlington (combined capacity, 697,000 acre-ft). Large part of flood of May 26, 1957, originated downstream from Eagle Mountain and Benbrook Reservoirs. Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 400 1,980 11JOO 11 60 3,240 7,500 21 3,120 6,070 3,900 2. _ ... 340 1,530 10,600 12..... 60 3,260 6,880 22 2,520 5,970 4,620 3 . 224 1,240 10,900 13 60 7,980 6,320 23 3,240 8,150 5,220 4. 614 3,350 11,500 14 60 9,470 5,970 24..... 4,710 11,200 5,520 5. 258 1,540 11,500 15 60 7,940 5,820 25 2,840 16,600 5,770 6_ 132 1,450 11,900 16 60 5,840 5,320 26. 6,300 43, 700 5,770 7 . 80 1,760 11,300 17 60 5, 270 4,510 27 9,380 20,000 5,670 8. 70 2,240 10,300 18 . 60 5,430 4,290 28 9,650 15,000 5,270 9 60 3,080 9,290 19 988 6,220 3,900 29 6,980 13,400 4,870 10 60 3,360 8,240 20 2,900 6,170 3,680 30 3,270 12,500 4,620 31 11,900

Monthly mean discharge, in cubic feet per s 1,954 7,962 7,068 Runoff, in acre-feet ___ 116,300 489, 600 420,600

66. ELM FORK TRINITY RIVER NEAR SANGER, TEX. Location. Lat 33°23'25", long 97°05'10", on right bank on downstream side of pier of bridge on State Farm Highway 455, 4.1 miles downstream from Spring Creek, 5.0 miles upstream from Isle du Bois Creek, and 5.4 miles northeast of Sanger, Denton County. Drainage area. 379 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 553.93 ft above mean sea level datum of 1929, Fort Worth supplementary adjustment of 1942 (U.S. Army Corps of Engineers bench mark). Discharge record. Stage-discharge relation defined by current-meter measure­ ments below 12,800 cfs. Maxima. April-June 1957: Discharge, 20,800 cfs 8 p.m. Apr. 26 (gage height, 27.45ft). 1949 to March 1957: Discharge. 20,100 cfs Sept. 14, 1950 (gage height, 27.15 ft at site 500 ft downstream), from rating curve extended above 11,000 cfs by logarithmic plotting. Maximum stage known since at least 1903, about 30.7 ft in 1908 at site 500 ft downstream; information from local residents. Flood of May 18, 1935, reached a stage of 29.7 ft at site 500 ft downstream, according to floodmarks. Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 454 1,660 1,760 11 48 922 282 21 1,250 444 136 "i...... 129 2,680 4,660 12 64 662 257 22 485 374 120 3_._ 4,390 2,000 2,610 13 84 2,180 236 23 4,510 2,380 122 4_ 756 3,160 818 14 84 2,040 214 24 . 2,170 7,700 141 5 _ .... 92 709 898 15. 60 501 196 25 363 12,900 116 6_ __ 51 505 507 16 100 428 181 26 14,000 6,980 108 7.. . 34 437 417 17 99 406 171 27 13,600 868 102 8 24 389 362 18 . 98 4,150 161 28 2,770 591 99 9. . 13 412 330 19 160 1,460 151 29 4,540 473 96 10 33 430 303 20 156 525 146 30 . 6,280 429 90 31 2,160

Monthly mean d ischarge, in cubic feet per 1,897 1,966 526 Runoff, in acre-fe et 112,900 120,900 31,320 B92 FLOODS OF 1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 19 April 86 Con May 4 12p.m...... 5.13 183 21.48 4,780 26.65 15, 200 6:30.._ --- 21.72 4,980 April %0 27.40 20, 400 10 - 20.90 4,370 8 - - -- 12m___ - - 19.25 3,400 12 p.m.,. .... 5.50 220 19 97 ^7 14.80 1,990 8 11.35 1,170 April il 12 10.10 920 1 a.m ...... 7.60 487 26.85 2 ...... CQO 12m--. . i o ofin 4- - 800 OK BR 11, 700 12m- 8.80 676 6 ...... 1,080 12 -- 24 25 7 ' 600 8.13 563 8...... 19 f\p; 1,420 10 13.40 A *ir j'7 9& 12 m__. ------13.86 1 740 1 p.m_-_ ..... 13.92 1,760 6.65 356 2 13.82 1,730 1Q QA 3,740 4.----..---... 13.25 6 . 16.80 2,540 8 ...... -- 11.35 1,170 14 00 1 780 12. . 10.75 10 10 1 E 1 33ft 6.60 349 11.07 8 9.90 880 April %% 1,040 12m. 10.75 1,050 4. . 12.75 1,470 11.47 1,190 2 a.m ___ -- 11.02 1,100 6 -- .-__ 2 9Qft 4. 11.25 1,150 4 9.80 860 10 1 C 2 QAft 8 11.85 1,270 6 8.25 582 10 9. 11.88 1, 2SO 9 ..... - 07Q 10 sn 3,680 10 11.83 1,270 12m.. 325 12 19.45 3 Efin 12 11.32 337 8 907 May 1% 12 5.50 OOA 18.40 3,060 8.88 692 April n 6 18.80 3,220 12 m... ----- 7.86 523 9 19.55 3,560 7.46 467 1 a.m ___ ... 5.70 242 18.95 7.70 501 2. .... -- 8.50 20.65 4,200 9. 8.87 688 3- --- 12.60 1,430 6 23.05 6,120 8.70 659 4. . 14.60 9 OQ Cfl 6 QRO 12 782 5 .. 17.00 2,600 12 24.65 8,300 IB * E 2 Qfift 7 _ . _ ... 1Q 1 K 3 0«A 8 ..... - in QA 3,740 9 QC 870 9...... 20.80 4. 3ftn 94. i c 7 440 Q 702 10 4,960 23.88 7,060 1,390 11- _ -..--.. 22.25 5,400 23.95 3,160 12m 22.75 5,820 12m.- 23.65 6,780 4,130 2 p.m.. _ -. 23.15 6,220 21.85 5,080 12 21.75 5,000 4 ___. 6,270 20.54 4,120 6 ... - 23.40 9 . 6,020 12 22.57 17.35 2,700 4.------21.25 4,620 April H 8 -- - 13.20 1,580 8 - 15.85 2,280 12m.-. 11.25 1,150 12m.. 10.30 960 3 a.m __ .--- 22.05 5,240 10.32 964 8 Oft 693 6 19.80 g 10.34 968 12 8 09 KQA 9 ...... 15.10 2,070 QOfl 12m. 11.70 1,240 12 10.75 i ACA May 17 9 1 x* Q07 4.---. ------668 8 AA 543 8 QE 702 9.-...... 8.25 582 13.80 1,730 12 ------7.62 490 8 16.75 2, 530 12m.- 19.38 3,470 14.70 1,960 April 25 2:30 p.m.. __ 20.02 3,810 4 17.80 2.840 4 ------19.88 3,730 8 19.32 3.440 12 m--_ 6.45 331 8 ------18.12 4,200 11 p.m_._ .... 6.05 283 12 15.25 2,110 99 7n 5.780 12 8.00 543 90 A9 6,090 12 21.85 5.080 April 96 1 a.m ...... 13.75 19 9ft 1,340 May 19 2 --... __ . 17.25 2,680 7CA 3...... - 19.80 3,680 8.94 702 16.70 2 E9A 4 22.50 5,600 12m. 850 1,130 5... .. 24.40 7,840 15.90 9 ASJ 836 6.--- _ ----- 25.10 9,250 19.65 3,600 8 Q7 705 8 25.80 11,500 12 - 20.84 4,330 12- 8.47 620 TEXAS AND ADJACENT STATES B93

Gage height, in feet, and discharge, in cubic feet per second, at, indicated time, 1957- Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May it May 25 Con. Junel 12 p.m...... 7.40 459 26.40 13, 800 18.45 3,080 2...... 18.87 3,250 May A» May %6 3. 18.20 2,980 6 _ -. 14.55 1,920 2 a.m. __ ... 11.30 1,160 25.90 11, 800 9_ 12.18 1,340 4...... 13.08 1,550 23.65 6,780 10.76 1,050 6...... 12.35 1,380 18.40 3,060, 10.03 906 8...... 10.60 1,020 8 13.50 1,650 6 9.70 840 12m...... 8.25 582 12 11.70 1,240 8 ----- 13.60 1,680 9.85 870 10 16.62 2,490 15.60 2,210 10:30 . 16.80 2,540 6 19.40 3,480 12 16.53 2,470 8. 21.90 5,120 10.34 968 10 . ------23.30 6,380 9.53 806 12...... 24.20 7,520 8.80 676 18.95 3,280 May £4. May SO 8 20.50 4,100 12m 22.50 5,600 23.68 6,820 10.85 1,070 23.27 6.350 8...... 24.85 8,700 3:30- - 23.43 6.520 10 25.18 9,490 6_ 22.85 5,920 12 m...... 24.95 8,900 8 .. 21.82 5,060 24.32 7,710 10 ------20.73 4,250 6.-.. ---.-_ 24.20 7,520 12.05 1,310 12. 21.07 4,500 12 .- 22.73 5,810 2 ...... 11.75 1,250 4 10.20 940 6.-- --- 15.05 2,050 7:30. 15.90 2,290 21.90 5,120 22.65 5,740 8:30 15.60 2,210 3-. - ... 22.18 5,340 6 24.70 8,400 10 17.10 2,630 4 - . 22.00 5,200 9 25.55 10. 600 11 18.20 2,980 6 20.45 4,070 12m...... 26.45 14, 100 12m..- - 18.92 3,270 8 18.90 3,260 2 p.m... _ .. 26.98 17, 400 17.75 2,820 12 m._. ______15.42 2,160 27.05 18, 000 2:30 17.55 2,760 12.05 1,310 6 . 27.05 18, 000 3:30-- 17.74 2,820 8 ...... 10.38 976 7 ...... 27.15 18, 600 6 . 16.45 2,450 12 9.70 840 8 27. 10 18, 300 10 . . 13.48 1,640 10 26.78 16, 100 12 16.45 2,450

66. ISLE DU BOIS CREEK NEAR PILOT POINT, TEX. Location. Lat 33°24'53", long 97°00'00", on left bank on downstream side of pier of highway bridge, 1.4 miles downstream from Wolf Creek, 2.2 miles downstream from Indian Creek, 2.5 miles northwest of Pilot Point, Denton County, and 7.3 miles upstream from mouth. Drainage area. 261 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 559.70 ft above mean sea level datum of 1929, Fort Worth supplementary adjustment of 1942 (U.S. Army Corps of Engineers bench mark). Discharge record. Stage-discharge relation defined by current-meter measure­ ments below 15,000 cfs. Maxima. April-June 1957: Discharge, 22,700 cfs, 8 p.m. Apr. 26 (gage height, 27.08ft). 1949 to March 1957: Discharge, 17,200 cfs Sept. 13, 1950 (gage height, 26.35ft). Maximum stage known since at least 1900, about 29.3 ft in 1908; information from local residents. B94 FLOODS OF 1957

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 1,980 2,770 1,220 11 4.6 99 18 21. . 2,110 63 4.4 2...... 1,370 1,760 1, 050 12 3.2 430 14 22 1,590 46 3.9 3. . . 2,400 638 1,590 13 2.4 2,560 12 23. ... 2,210 960 4.3 4 _ 3,400 3,040 995 14 1.8 3,300 11 24 4,810 4,710 4.6 5-----.. 287 428 370 15 1.6 603 9.0 25 1,360 12,100 4.8 6 44 72 127 16 1.6 72 7.2 26 10,900 10,100 5.0 7 . 22 36 62 17 1.6 54 6.1 27 11,600 2,560 3.8 8...... 12 27 38 18 1.5 2,030 5.4 28 - 2,930 178 3.2 9...... 8.8 64 27 19 827 2,360 4.8 29 838 91 2.7 10 6.3 101 22 20 1,660 227 4.5 30 2,020 71 2.2 31 1,160

Monthly mean d ischarge, in cubic feet per s 1,747 1,700 188 Runoff, in acre-fc et 103,900 104, £00 11,170

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 18 April 24 Con. April 29 Con. 12p.m.... _ 1.74 1.4 23.42 5.930 13.25 1,320 23.13 5.640 6 14.38 1.590 April 19 21.75 4,410 8 ------14.35 1,580 12 19.15 3,020 12 14.88 1,710 4a.m ____ 1.73 1.4 8 1.90 2.7 April 25 April S.O 9 ...... 3.50 42 10 6.60 260 15.94 1,980 15.37r- . . 1/840 11- 10.25 745 11.90 1,040 6 ------15. 13 1,770 12m... . 12.30 1.120 9.46 609 9. -- - 14.93 1.720 3 p.m... .. 13.88 1,460 10:30 9.12 558 12 m.. .-----. 15.35 1,730 6. ... 14.46 1,600 12 .. 10.80 844 16.98 2,280 9 1 fidft 12 18.67 12 14.56 1,630 May 1 April SO 2 a.m ___ -.. 13.40 1,350 4 ...... 16.45 2,130 19.19 3,040 4 a.m __ ... 14.25 1,550 6- - 19.15 3,020 6 19.42 3.130 8 14.14 1,530 8------21.45 4,180 9 19.32 3.090 12m....---. 14.35 1.580 10 23.30 5,810 12m-.. --- 18! 97 2,950 6 p.m.. 15.27 1,810 12 m... ------24.62 9,080 17.57 2,460 8 ...... 15.42 1,850 25.50 12,800 12 16.41 2,110 11 . 15.27 1.810 4 26.35 16, 900 12 15.58 1,890 6 . 26.93 21, 400 8 27.08 22, 700 April SI 12 26.75 19, 800 16.35 2,100 6 - - 16.47 2,130 3 a.m ___ .- 16-78 2,220 April 27 12m... _- 15.78 1,940 6. - .. 17.15 2,340 13.88 1,460 12m..... 16.50 2,140 OK QQ 14, 500 12 11.00 880 10 p.m...... 15.71 1,920 12m... 25.13 11, 100 12...... 15.74 1,930 24.33 8,000 12 23.33 5,840 April SS 8.14 427 12 m.. ------6.62 262 15.82 1,950 6.06 209 12m... 15.12 1.770 4,290 6 8.05 416 6 p.m....- 13.62 1,400 18.38 2.730 8 .... . 11.45 961 9...... 12.02 14.45 1.600 10 14.30 1,570 12 9.15 562 Q 948 12------16.88 2,250 12 8.15 428 April S3 May 4 April 29 8.60 &XA on fin 3. 370 3. 9.55 622 7.18 318 6-- --- 21.12 3,950 6 _ ... 13.00 1,260 2 7.60 362 7:30-. 21.22 4,010 12m.-. -. 17.62 2,481) 3:30-- 7.10 310 9. 21.13 3,950 6p.m...... 19.45 3,170 4 7.35 335 12m... 20.52 3,620 12 .... ._ 20.73 3,720 6 QO 292 17.90 2,560 8 7.38 338 12 ------13.35 1,340 April 24 10:30 7.00 300 12 m.. --..-- 7.62 364 4 a.m __ .... 22.65 5,160 2p.m ___ .-- 11.15 907 6 a.m _ ..--.- 8.95 532 TEXAS AND ADJACENT STATES B95

Gage height, infect, and discharge, in cubic feet per second, at indicated time, 1957- Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May 5 Con. May 18 Con. May SS Con. 12m...... 6.84 284 7.75 00 A 24.56 8,840 5.63 172 10.15 727 25.54 12, 900 12 . 4.82 112 12.05 1,070 26.02 15, 100 6. ... ._-.- 13.80 1,450 11:30. 26.12 15,600 May 11 12m 2.320 12 - . 26.10 15. 500 18.69 2,840 12p.m...... 5.62 172 12...... 1 Q no 2 no A May n May 19 26.06 15, 300 6 25.60 13, 200 4 a.m ______6.07 209 1 Q QK 9 QA.fl 12 m 24.80 9.800 11 6.02 205 6 1 fi fifl 2 fifift 23.87 6.660 5:30 p.m ...... 5.40 154 12m . . 1 7 QK 2 KJA 12 22.78 5,290 6.80 280 16.12 2,030 8 ..... - 10.00 700 12...... 997 May 27 9 ------12.75 1,210 10 14.60 1,640 21.20 4,000 2,100 17.65 2,480 416 15.20 1,790 May IS 6 6.22 223 6 11.70 1,010 5.21 139 9 . 8.65 490 3:30 a.m...... 17.10 2,320 4.69 104 12 7.06 306 6- 16.73 2,210 12 . 4.36 85 8 -- - 16.34 2,100 17.62 9 d.fift 2,970 10.20 736 12...... 19.40 3,120 12m 3 Q1 61 12p.m...... 3.58 46 June H May 14 10.45 781 19.88 3,320 12m. 11.43 957 12m-.- - 20.60 3,660 12 m 3.38 38 13.36 1,340 20.66 3,690 3.32 35 9:30.--- - 13.87 1,460 6 ------20.12 3,420 3.60 47 12 13.47 1,370 12...... 17.28 2,370 12 4 Qfl 117 June 3 May 15 May #5 12.43 1,150 14.80 1.690 5.95 8 13.37 1,340 6 11.25 925 2. - . 6.75 275 12m. 15.00 1,740 9. 7.50 351 6 7.89 397 15.79 1,940 6.08 211 8. .... 8.02 412 12. . 14.92 1,720 5.08 130 7.75 380 12...... 4.59 98 2 8.45 464 June 4 4. 12.60 1,180 May 16 6 15.90 1,970 13.73 1.430 8 16.76 2,220 12m- 12.35 1,130 12m. ..---.._ 4.05 68 17.13 2,330 8.20 434 3 7K 54 12 .. . 6.51 251 May 24 May 17 June 5 18.24 2.680 3.70 52 9 19.55 3,180 6.51 251 8...... 3.85 58 99 47 4.990 5-.. __ 7.96 405 12m-... .. 3.75 54 23.72 6.350 8... 8.90 525 3.67 50 10 24.20 7,600 12m . 8.40 458 12- - 3.90 60 12 24.16 7,480 7.24 324 12-....- 6.11 213 May 18 May £5 5.85 190 24.14 7,420

67. CLEAR CREEK NEAR SANGER, TEX. Location. Lat 33°20', long 97°11', on right bank at downstream side of bridge on U.S. Highway 77, 1,350 ft downstream from Duck Creek, 1.1 miles upstream from Gulf, Colorado and Santa Fe Railway bridge, and 1.8 miles south of Sanger, Denton County. Drainage area. 296 sq mi. Gage-height record. Water-stage recorder graph except May 5-10, 15-17, 20-22, and June 16-23. Datum of gage is 587.23 ft above mean sea level B96 FLOODS OF 1957

datum of 1929, Fort Worth supplementary adjustment of 1942 (U.S.Army Corps of Engineers bench mark). Discharge record. Stage-discharge relation denned by current-meter measure­ ments. Discharge for periods with no record of gage height estimated on basis of records for Elm Fork Trinity River near Sanger and Denton Creek near Justin, engineer's notes, and records of weather. Maxima. April-June 1957: Discharge, 16,100 cfs 12:45 p.m. May 25 (gage height, 24.27ft). 1949 to March 1957: Discharge, 18,200 cfs Sept. 13, 1950 (gage height, 24.80ft). Maximum stage known since at least 1880, 31.5 ft in 1908; information from Gulf, Colorado and Santa Fe Railway Co. Flood of May 1935 reached a stage of 29.0 ft; information from State Highway Department.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 8.0 636 5,630 11 .. 6.2 401 126 21 1,140 200 94 2 .- 3.3 1,350 1,700 12 5.1 372 115 99 315 180 81 3 .. 1,440 1,620 1,780 13... . 4.6 1,830 119 23 _ 2,980 2,410 69 4... . 116 1,060 562 14 - 4.6 £02 105 24 - 454 4,320 103 5 39 600 738 4.4 400 88 25 208 10,200 42 6 22 350 361 16 4.6 300 172 26_ 11,800 2,130 32 7 16 200 263 17 3.5 300 153 27 8,500 516 28 8 . 10 100 214 18. . 4.1 2,940 137 1,990 350 25 9 8.5 60 182 19 11 409 122 29 4,270 243 23 10 7.2 45 153 20 46 250 108 30 2,200 266 20 31 4,530

Monthly mean c ischarge, in cubic feet per second 1,187 1,260 445 Runoff, in acre-fe>et 70,650 77,490 26, 470

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage, Discharge Hour Gage Discharge height height height

April 19 April SI Con. April 24 Con. 12 p.m...... 1.05 15 12 p.m 8.13 1,210 4.62 481 3.80 345 April m 3.12 236 2a.m__. _ .. 1.05 15 6.48 820 3...... 1.28 27 4 ...... 5.00 548 5...... 1.38 33 7 3.71 331 12m-. 2.68 166 9...... 1.59 Kft 2.81 187 2.43 126 12m...... 1.65 56 2.28 105 11 3.82 348 12:45 p.m ..... 3.25 257 12 . 2.15 88 12. _ ...... 8.92 1,430 1 _ ...... ifid 2 _ .... _ ... 1.48 40 A nril 9Q April &6 9...... 1.29 28 11 1.25 25 3.56 307 14.18 3,270 12., ------2.72 188 2 ..... 6.60 824 2.-.--- __ ... 18.23 5,140 3- ... 8.70 1,360 3 ... 20.50 6,710 April n 4:30- 10.17 1,800 4 21.73 8,330 9.20 1,510 7 .... 23.08 11, 700 1 a.m_ - _ 3.03 230 8 ...... 10.95 2,040 10:30.-- 22.98 11,400 5 4.88 526 9...... 14.25 3,300 23.53 13,200 8- 6.85 897 10 17.00 4,450 24.23 15 900 10:30.. 9.00 1,450 12m------_ 18.84 5,500 9. - 23.65 13,600 12 m-_ _ 7.98 1,180 18.57 5,340 12 23.70 13,800 6.87 901 6 . 16.33 4,130 3:30- 5.28 598 9 12.13 2,450 April 27 5.-.------7.50 10 10.67 6 ...... 9.52 1,610 12 8.07 1,200 23.23 12,200 7------11.55 2,240 22.63 10,500 8:30-- 13.36 2 Q4.A 6,560 10 11.35 2.170 2a.m__ 6.58 840 4...... 20.00 6,300 TEXAS AND ADJACENT STATES B97

Gage height, infect, and discharge, in cubic feet per second, at indicated time, 1957- Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 27-Con. May 5 Con. May 18 Con. 5.... ___ ... 17.75 4,600 7 ia 871 16.15 3,880 6...... 15.12 3,460 7...... 6.15 656 14.00 3,020 10 10.13 1,650 12m 5.20 461 8. - ... . 10.37 1,730 12...... 9.05 4 4.^ 007 10 8.60 1,220 4...... 6.00 629 12 . 7.62 972 April 28 5 .-. . 9.55 1,480 6...-. _ ..... 11.88 2,200 May 19 6 a.m ...... 7.14 842 7 . 15.00 12m... _ ... 6.25 665 4,440 6.45 728 1 p.m...... 6.35 683 g 18.10 4 790 9t 5.00 427 3 ...... 7.50 930 10 17.30 4,380 A KA 345 4______.... 9.58 1,490 11 . 16.45 4,000 3.65 209 5...... 11.40 2,040 10 15.30 3 K4fl 19 3.05 115 6. _ .. ___ .. 13.72 2 Gin 7 16.00 S oon 8 17 OR 4, 720 9 18.40 5,120 10 QA 2 QQft 6.30 683 12...... 19.37 5,860 11.20 1 980 6...... 9.07 1,340 May #3 April %9 9. . .. 972 12m. .._._... 6.50 737 1 a.m__._ ..... 7.80 1,020 1:30 a.m...... 19.57 6,000 4 p.m... _ . 5.63 535 2 8.70 1,240 3 19.05 5,570 12. 3 8.36 1,160 4...... 17.68 4,560 4 __ ...... 7.52 948 5 ...... 15.50 3,620 May n 6...... 6.33 688 6...... 13.50 2,820 10 4 89 A(\Q 7 _ ---. . 11.73 2,150 12m. A CK OK9 9 10.20 1,680 12 m...... 2.85 88 1 p.m...... 5.60 530 10 11.13 1,950 6 p.m...... 2.10 21 2...... 6.80 794 12m...... 12.78 2,530 7 ...... 3.25 145 3...... 9.40 1,440 2 p.m...... 15.00 3,420 8...... 4.45 337 4. . 12.62 2,470 3 16.58 4,050 9...... 8.25 1,130 5 15.60 3,660 4...... 18.20 4,970 10 10.50 1,760 17.96 4,710 5...... 19.40 5,880 10:30-.-.-... 10.74 1,840 7 19.78 6,150 7...... 19.88 6,220 11 10.63 1.800 8:30.- 20.77 6,970 9_ 19.43 5,900 12...... 9.85 1,570 10 20.00 6,300 10 18.78 5,380 11 19.83 6,180 12...... 17.25 4,350 May 13 12 19.87 6,210 April 30 8.80 1,270 2...... 7.53 950 4*110 4...... 5.82 597 1 a.m..-...... 19.93 6,250 5 6. 5.05 436 3 . 19.22 5,720 10. 9...... 4.36 323 4 ...... 17.82 4,640 2,070 10 - 5.32 481 5 ..... 16.10 3,860 10.42 11 6.67 768 1...... 13.84 2,960 12m...... 9.32 1,410 8 _ 14.25 3,120 7.70 11.75 2,160 15.92 3,790 3 ...... 14.50 3,220 10:30...... 17.15 4,300 5...... 16.12 3,870 11:30.-- 17.07 4,260 7.15 864 6:30-.--. .... 16.58 4,050 12m 17.22 4,340 g 701 7 ___ ----.-. 16.40 3,980 2:30 p.m...... 18.80 5, 210 5 OE GAO 9 ...... 14.08 3,050 3 ...... 18.10 4,790 5 nn 427 11 10.55 1,780 4 ___ ..... _ 18.15 4,820 12...... 4 55 QCQ 12 9.30 1,400 5 - 18.05 4,760 5:15.. ------18.98 5,320 May 14 6 _ - 18.78 5,200 8... 16.72 4,110 4.44 9Q K 7.67 985 9 14.80 3, 340 K C.K con 4...... 6.66 766 10. 12.75 2,520 3 ... 6.75 704. 12m...... 4.65 369 12 -10.00 1,620 4 8.10 1.090 12p.m...... 3.55 193 5 ___ ...... 9.15 10.15 1,660 May 17 1:30 a.m __ . 9.18 1,370 8. .. 9 84 1,570 2 9.40 1,440 12m.--..- .. 8.18 1,110 12p.m...... 3.30 153 3 ...... 13.08 2,650 7.10 OKA 4 18.00 4,730 5 6 KA 7«?7 May 18 5 20.70 6,900 6. _ ------9.15 6 ...... - 21.80 8,500 U OK 2,020 1 a.m.__...... 4.65 369 22.37 9,870 8 10 K7 0 4KA 2 -- 6.30 683 g 23.07 11, 700 9 10 OO 2 KKA 3 8.18 1,110 10.. 23.22 12,200 10 19 QQ 2 OCA 6...... 11.14 1,960 11 23.77 14, 100 12...... 10.30 2 nnn 8 15.30 3,540 12 m_ ...... 24.25 16, 000 10 18.45 24.27 16, 100 12m... _ ... 19.50 5,640 2...... 24.13 15, 500 19.63 5,730 8 - 22.97 11, 400 2 a.m____ ..... 8.38 1,160 3 ...... - 19.15 5.420 12...... 21.90 8,740 B98 FLOODS OF IBS 7

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May K May 31 Con. June 2 Con. 1 a.m__ ...... 21.24 7,490 22.51 10, 200 11.42 2,040 2...... 20.00 6,300 12 13.02 2,630 3...... 18.00 4 7<>fl 4...... 15.53 3,630 5...... 13.43 2,790 99 *ift 10,300 7...... 11.00 1,920 3...... 21.68 8,220 14.95 3,400 10...... 9.30 1,400 4:30...... 21.53 7,920 2 16.02 3,830 12m...... 8.60 1,220 7:30...... 22.32 9,750 3:30...... 16.62 4,070 6p.m...... 7.13 860 9-...... 22.08 9,170 4...... 16.02 3,830 12...... 6.27 678 10...... 21.53 7,920 6 14.45 3,200 11...... 20.22 6,480 7 13.08 2,650 May 27 12m...... 18.23 4,870 8 11.18 1,970 15.30 3,540 10...... 9.34 1,420 12m. __ .... 5.35 486 12.78 2,530 12 m_...... 8.28 1,140 12 p.m...... 4.92 413 3---. _ ..... 11.02 1,920 6.72 778 4:30...... 9 AQ 1,460 12 6.00 629 May 30 5...... 9.58 1,490 .. 10.83 1,860 June 4 12 p.m...... 12.43 2,410 7...... 13.18 2,690 8...... 15.00 3,420 12m...... 5.33 483 May 31 9...... 15.40 3,580 5:30 p.m ...... 5.18 458 10...... 15.00 3,420 6 5.20 461 1 a.m ...... 14.43 3,190 11 13.93 2,990 8. 6.18 661 2...... 15.52 3,630 12...... 12.78 2,530 10 6.45 728 3...... 17.63 4 un 11 6.57 750 5...... 1Q 77 K 1QA 12 6.53 742 8...... 20.00 6,300 9:30...... 20.72 6,920 12.62 2,470 10...... 20.65 6,850 4...... 13.78 2,930 11 __ ...... 19.78 6,150 5 ...... 13.33 2,750 6.68 770 12m...... 18.12 4,000 7 ...... 11.25 1,990 3 . 7.52 948 15.57 3,650 g 9.43 1,440 4...... , 7.52 948 2...... 12.92 2,590 12m...... 8.16 1,110 8 7.72 998 3...... 11.00 1,920 8.43 1,180 9:30.. 7.17 868 5...... 8.87 1,280 3:30...... 8.06 1,080 10 7.63 97S 7...... 8.07 1,080 5:30...... 8.29 1,140 12m 6.90 814 8...... 10.50 1,760 6 8.27 1,140 5.58 526 9...... 19.35 5,840 7.79 1,020 12 ...... 4.95 418 10...... 21.75 8,380 10...... 9.68 1,520

68. GARZA-LTTTIjE ELM RESERVOIR NEAR L,EWISVTLLE, TEX.

Location. Lat 33°04', long 96°58', in intake structure of Lewisville Dam on Elm Fork Trinity River, 2 miles upstream from bridge on State Highway 121, 2.4 miles northeast of Lewisville, Denton County, and 12 miles upstream from Denton Creek. Drainage area. 1,658 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is at mean sea level, datum of 1929 (levels by U.S. Army Corps of Engineers). Maxima. April-June 1957: Contents, 1,146,000 acre-ft (including contents of Lake Dallas) 11 a.m. June 3 (elevation, 535.57 ft). 1954 to March 1957: Contents, 36,850 acre-ft (not including contents of Lake Dallas) Feb. 19, 1956 (elevation, 478.53 ft). Remarks. Reservoir is formed by a rolled earth-fill dam with a 560-foot uncon­ trolled off-channel concrete spillway with ogee weir section. Outlet works consist of a concrete conduit, 16 ft in diameter, controlled by three 6.5- by 13-ft broome-type gates and two 60-inch steel pipes controlled by service valves. Deliberate impoundment of water began Nov. 1, 1954, and main TEXAS AND ADJACENT STATES B99

dam completed August 1955. Capacity, 1,002,900 acre-ft at crest of spillway (elevation, 532.0 ft) and 482,000 acre-ft at top of conservation storage (eleva­ tion, 515.0 ft). When the water surface reaches an elevation of 525.0 ft, water backs over the service spillway of Lake Dallas and the two reservoirs are combined. This condition occurred on May 21, 1957; therefore, in order to maintain continuity, records are combined to show total contents of both reservoirs for the period Apr. 1 to June 30, 1957. Reservoir built for flood control and water conservation. Records for Garza-Little Elm Reservoir furnished by U.S. Army Corps of Engineers.

Combined contents, in acre-feet, of Garza-Little Elm Reservoir at 12 "p.m. of indicated day, 1957

Day April May June Day April May June

1. .... 87,500 681,400 1, 142, 000 is 131, 400 765, 600 1, 014, 000 2...... 96,870 691, 500 1, 143, 000 19 146, 800 775, 200 1, 005, 000 3...... 109,900 698,500 1, 141, 000 20 ...... 162, 900 771, 900 996, 500 4 126,800 718, 600 1, 134, 000 5...... 129, 600 720,000 1, 124, 000 21 184,600 769, 000 986, 700 22 199,200 765, 300 978, 300 6. . 129, 700 715,200 1, 110, 000 9^ 236,500 818, 000 970, 000 *T 130,900 711,300 1, 099, 000 24 - 273,300 897, 400 960,800 8...... 131, 000 701,000 OK 1, 056, 000 951, 500 9...... 130,400 691,900 1, 080, 000 10 ...... 130,400 684,100 1, 074, 000 26 389,500 1, 142, 000 943,000 27 - 563,600 1, 138, 000 934,700 11 130,700 680,000 1, 067, 000 28. '603, 700 1, 122, 000 925,600 12--.....-...... 130,800 689, 100 1, 062, 000 29 635,300 1. 107, 000 916, 300 13 130,900 734, 100 1, 053, 000 30 664, 200 1, 098, 000 907, 500 14 . 131, 100 759,500 1, 045, 000 31 - 1, 112, 000 15...... 131, 200 762, 400 1, 038, 000 18...... 131, 400 758, 400 17 131,000 750,400 1, 022, 000 +590, 300 +447, 800 -204, 500

69. ELM FORK TRINITY RIVER NEAR LEWISVILLE, TEX. Location. Lat 33°02'45", long 96°57'40", on left bank at downstream side of pier of bridge on State Highway 121, 1.8 miles east of Lewisville, Denton County, 1.9 miles downstream from Garza-Little Elm Reservoir, and 8.3 miles upstream from Denton Creek. Drainage area. 1,671 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 432.39 ft above mean sea level, datum of 1929 (U.S. Army Corps of Engineers bench mark). Discharge record. Stage-discharge relation defined by current-meter measure­ ments below 6,100 cfs. Maxima. April-June 1957: Discharge, 11,400 cfs May 27 (includes about 4,000 cfs passing over emergency spillway of Garza-Little Elm Reservoir and by­ passing gage); gage height, 26.72 ft 6 p.m. May 27. 1949 to March 1957: Discharge, 21,700 cfs Sept. 15, 1950 (gage height, 30.75 ft). Maximum stage known since at least 1907, 33.8 ft in 1908, from floodmarks. Remarks. Flow largely regulated by Garza-Little Elm Reservoir. B100 FLOODS OF 1957

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 214 2,150 9,290 11- 96 4,040 3,310 21..... 199 3, 580 4,160 2 20 3,600 10,900 12 90 2,010 2,830 22 41 5, 010 4,420 3 38 3,090 11,100 13..... 85 279 3,120 23..... 633 4,310 4,470 4 46 1,120 10,500 14 70 127 3,380 24 330 659 4,400 5 . 47 1,360 9,440 15 95 1,000 3.230 25 178 1,580 4,130 6.. . 60 3,240 7,990 16 77 2,610 3,430 26 1,340 7,430 4,100 7 60 1,6.50 6,610 17 100 4,180 3,800 27..... 850 11,200 4,080 8...... 67 4,100 5,550 18 98 5,030 3,780 28 61 9,760 4,070 9 104 6,160 4,680 19 361 3,690 ?,960 29 150 7,920 4,050 10 119 5,930 3,910 20 49 3,740 3,940 30 648 6,530 4,040 31 6,700

Monthly m°an d ischarge, in cubic feet per 211 3,993 5,222 Runoff, in acre-f 3Ct 12,550 245, 500 310, 800

70. DENTON CREEK NEAR JTTSTIN, TEX. Location. Lat 33°07', long 97°18', on right bank at downstream side of bridge on State Farm Highway 156, 100 ft upstream from Gulf, Colorado and Santa Fe Railway bridge, 2.2 miles north of Justin, Denton County, 3.0 miles upstream from Olivers Creek, 12.9-miles upstream from Harriet Creek, and 32.9 miles upstream from Grapevine Dam. Drainage area. 409 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 606.66 ft above mean sea level datum of 1929, Fort Worth supplementary adjustment of 1942. Discharge record. Stage-discharge relation denned by current-meter measure­ ments below 21,000 cfs. Maxima. April-June 1957: Discharge, 29,800 cfs 6 a.m. May 24 (gage height, 17.64ft). 1949 to March 1957: Discharge, 6,210 cfs May 1, 1950 (gage height, 15.67 ft). Maximum stage known, 21.6 ft in May 1908, from floodmarks about 1 ft higher than flood in May 1935 at site 1,500 ft upstream, information from local residents.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 _-_ 0 1,140 2,120 11 0.2 496 131 21 452 312 41 2 0 653 3,410 1° 0 982 115 22..... 331 157 38 3 762 308 3,670 13- 0 3,020 121 23 1,430 2,740 37 4 78 330 1,480 14 0 1,250 99 24 993 7,840 48 5 _ . ... 23 397 4,520 15 0 968 82 25 492 13,700 47 6 _ ---. 13 258 792 16 0 424 67 26 11.700 9,380 54 7 8.5 136 362 17 0 181 58 27 17,200 3,100 37 8 4.0 100 241 18 0 1,450 50 28 7,740 576 32 9 1.8 152 191 19 56 1,330 45 29 4,290 284 29 10 .5 179 159 20 25 1,310 44 30 2,770 245 29 31 1,010

Monthly mean c ischarge, in cubic feet per 1,612 1,754 605 Runoff, in acre-fset- 95, 940 107,900 36,000 TEXAS AND ADJACENT STATES B101

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 25 May IS May SB Con. 3 Q9 222 1Q OK 4,290 14.47 5,050 9...... 4 40 9CQ 4. . 4,840 10 14.86 5,780 10 077 6 . 4,190 12.-...... - 14.81 5.680 11...... 9.80 1,760 9. 12.63 3,290 11:30...... 10.25 1,960 12m...... 11.37 2,500 May 24 12...... 10.10 1,890 10.32 1,990 6. - 10.88 2,260 3 a.m__-_ ---- 14.42 5,130 11.16 2,400 4 15.05 6,160 19 10.27 1,970 5 - 16.30 13,200 9 10 i *ifin 6 17.64 29,800 2 ...... 10.85 2 240 May 14 8 16.35 13,700 13.60 4,040 10 15.55 7,810 4. __ _. 6,060 1,350 12m... 15.11 6,280 1C 19 6,310 12m...... 0 ftl 1,280 4p.m.... . 14.38 4,920 1/1 05 S Qftn 7.70 959 8 13.70 4,140 6...... 4,760 7.37 869 12 13.11 3,630 8...... 13.05 12m..... 12.93 3,500 May 25 15.00 2...... 16.80 10 Ann 8 in 1,090 2 a.m__._. .... 12.62 3,280 17.20 8 17 1,110 3...... 14.40 4,940 17.10 99 inn 6 . 7.68 953 5... ------15.59 8,010 12...... 17.00 20 ' 800 19 6.85 740 7. ___ 15.13 6,340 8 15.55 7,810 A rtril $7 May 17 9...... 16.25 12, 800 10 16.40 14, 200 12m...... 16.82 10 (inn 144 12 m... _ ... 16.22 12, 500 16.92 19, 800 6_ 17.18 23, 100 6:30..- 17.22 23, 700 4.15 252 17.18 23, 100 15.80 9 260 4 . 4 90 363 9 17.06 21, 600 15.40 7,160 6 6.25 606 12 16.68 17, 100 12m...... 15.70 8,660 8 - 8.60 1,270 15.22 10 _ . 9.74 1,730 May 26 12 14.67 5,400 12m.--..--.. 10.63 2,140 2,370 6a.ni-___ _ .- 16.09 11,300 April 29 3 ...... 11.12 2,380 12m. ____.-.- 15. 64 8,300 4...... 11.10 2,370 6p.m_._. .... 15.20 6,510 14.00 A A«n 9 97 1 830 12 - 14.82 5, 700 12m...... 13.22 3,720 12 1,330 14.35 4 880 May 27 13.12 6 a.m.___. .... 13.98 4.4HO 12 13.55 3 QQn 8.36 1,180 12m.- 12.06 2, 910 1,170 9.66 1,690 8 7Q 1,350 12 7.85 1,000 12 ___ ...... 9.72 1,720 12.80 3,410 May 28 12m...... 11.55 2 600 9 QQ 1,790 6.55 672 9 99 1 840 12m ...... 5.80 516 Q 9 67 1,700 5.37 438 12m...... 8 QQ 1,420 12 4.87 358 181 8.00 1,050 6.76 720 May 29 May 11 12...... -. 5.77 510 4.05 238 4.20 259 9...... 6.00 555 May 30 12m... __ .. 7.19 4.93 3R8 7 lo con 12m...... 4.38 285 12111... __ . 3.81 207 2.-...... 7 ns 3.74 198 8 p.m.-- 3.71 195 6 6.10 575 9 3.85 212 12...... 5.14 401 10 5.20 411 6.18 592 3 19 130 11:30.. 6.30 617 12 _____ . 6.00 555 5.39 441 5.20 411 May 31 12m...... 4.72 336 3.08 126 4.30 273 12m...... 3.23 142 2 a.m__ ..... 6.10 575 6...... 419 7 ftfl 4 6.42 643 7 . 1,230 2. .. 3,620 6 7.15 812 8...... 11.90 2,810 3 . .. 15.45 7,360 8 _ - 8.25 1,140 10...... __ 3,760 8,360 10...... 8.62 1,280 12...... 13.12 3.640 6 15.02 6.100 12111.----.-- 8.33 1,170 B102 FLOODS OF 1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May 31 Con. JuneS June 5 4p.m__ ...... 7.80 989 12:30 a.m. .... 14.85 5,760 13.93 4,380 8 _ ...... 8.20 1,120 1...... _ .. 14.80 5,660 2 13.62 4,060 12...... 8.87 1,380 3- . 14.59 5,240 4...... 13.11 3,630 6 ...... 14.36 6...... 13.60 4,040 9 13.85 4,290 9 14.65 5,360 12m...... 12.45 3,160 12m...... 15.14 6,360 5 a.m__ 10.33 1.990 11.61 2,640 15.15 6,380 11..... 9.72 1,720 12-...... 10 29 2 15.07 6,200 12m...... 9.75 1,730 4...... 14.78 5,620 4 p.m___ ..... 10.90 2,270 8...... 13.20 3,700 8...... 11.80 2,750 10 __ ...... 10.90 2,270 12 . . . 12.32 3,070 12 9.58 1,660 9.43 1,600 June 9 4 9.64 1,690 6 9.38 1,580 -.12.62 3,280 g 8.64 7.28 846 8 . 12.34 3.090 12m...... 8.03 1,060 12m...... 6.58 679 12m____ .. 11.77 2,730 6.90 752 6.09 573 1 p.m._. _ . 11.95 2,840 8 ...... 8.50 1,230 12...... 5.60 478 5...-- _ ..... 13.02 3,560 g 10.10 1,890 6 ...... 12.90 3,480 10...... 11.35 2,500 9...... 13.55 3,990 11 12.25 3,020 12...... 14.83 5,720 12 13.50 3,940

71. GRAPEVINE RESERVOIR NEAR GRAPEVINE, TEX. Location. Lat 32°58', long 97°03', in intake structure of Grapevine Dam on Denton Creek, 2.7 miles northeast of Grapevine, Tarrant County, 4.3 miles upstream from bridge on State Highway 121, and 11.7 miles upstream from mouth of Denton Creek. Drainage area. 694 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is at mean sea level, datum of 1929 (levels by U.S. Army Corps of Engineers). Maxima.- April-June 1957: Contents, 445,800 acre-ft 12 p.m. June 6 (elevation, 560.80 ft). 1952 to March 1957: Contents, 39,380 acre-ft June 19, 1954 (elevation, 506.08ft). Remarks.- Reservoir is formed by rolled earth-fill dam with a 500-ft controlled off-channel gravity-type concrete spillway with ogee weir section. Outlet works consist of a concrete conduit, 13 ft in diameter, controlled by two 6.5- by 13-ft broome-type gates and two 30-inch steel pipes controlled by slide gates. Dam completed June 1952, and deliberate impoundment of water began July 3, 1952. Capacity, 435,500 acre-ft at crest of spillway (elevation, 560.0 ft) and 188,500 acre-ft at top of conservation storage (elevation, 535.0 ft). Reservoir built for flood control, navigation, and water conservation. Records furnished by U.S. Army Corps of Engineers. TEXAS AND ADJACENT STATES B103

Elevation, in feet, and contents, in acre-feet, at 8 a.m. of indicated day, 1957

AIml May June Day Elevation Contents Elevation Contents Elevation Contents

I ...... - ...... 18.090 534 40 184, 200 556. 75 395, 400 2...... 497.23 18,160 534.77 186, 800 557. 72 407, 100 3 _.__ ...... 498. 87 21,320 534.92 188, 000 558. 90 421, 600 4 499. 25 22,100 535.04 188,800 559. 65 431, 100 6 .--._____.__ 499. 28 22,160 535.13 560. 65 443, 900 6...... 499. 29 22, 180 535. 21 190, 100 560. 80 445, 800 7...... 22,180 535 24 560. 77 445, 400 8...... 499. 28 22,160 535. 27 560.71 444,600 9 ...... 499.27 22, 140 535. 33 191,000 560.66 444, 000 10...... 443, 400 11 -_- _ ____ 499. 26 22,120 535. 61 193, 100 560.52 442, 200 12 ...... 22,100 535. 97 195, 800 560.41 440, 800 13 ...... 22,100 538. 26 213,600 560.23 438, 500 14 _ ...... __ . _ . _ ..... 499. 22 22,040 538. 70 217, 100 560.00 435,500 15 ... ____ 499. 20 22,000 538.93 219, 000 559.82 433, 200 16...... 499.22 22, 040 539. 03 °19 800 559. 62 430,700 17 ...... 499. 22 22,040 539. 05 220, 000 559. 42 428, 200 IS...... _____ . 22, 040 539.49 223,600 559. 23 425, 800 19...... 500.96 25, 770 539.26 221, 700 559.00 422,900 20 ...... 501. 11 26, 110 539.13 220,600 558. 80 420,400 21...... 503. 14 31, 060 539.02 219, 700 558. 59 417,800 22 . 503.60 32, 280 539. 05 220,000 558. 38 415, 200 23...... 507. 23 43,000 540. 33 230, 500 558. 23 413,400 24 ...... 508.76 48, 130 544.43 266,500 557. 98 410, 300 25 _. ... 509. 37 50,280 551.09 331, 900 557. 72 407, 100 26 ___._ __.__ 515. 51 74, 930 554. 52 369, 400 557. 49 404, 300 27...... -...... 524. 28 119, 300 555.24 377, 700 557.27 401, 700 28 ._ _...... 528. 93 147, 200 555. 38 379, 300 557. 02 398,600 29 ._..__.. 532. 18 168,500 555. 43 379, 900 556. 78 395. 800 30...... 533. 91 180,600 555. 57 381, 500 556. 54 392, 900 31...... 556. 35 390, 700

Chanee in contents, acre-feet. - +162, 700 +210. 100 t +2, 200

72. DENTON CREEK NEAR GRAPEVINE, TEX. Location. Lat 32°59'15", long 97°00'45", on left bank at downstream side of left pier of bridge on State Highway 121, 1.3 miles downstream from Bakers Branch, 4.3 miles downstream from Grapevine Dam, 5.0 miles northeast of Grapevine, Tarrant County, and 6.1 miles upstream from mouth. Drainage area. 704 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 439.11 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 2,400 cfs 12:30 p.m. May 19 (gage height, 21.91 ft). 1947 to March 1957: Discharge, 13,900 cfs Feb. 26, 1948 (gage height, 30.38 ft), from rating curve extended above 6,000 cfs by slope-conveyance method. Maximum stage known, that of May 1908, slightly higher than the flood in April 1942, which reached a stage of 35.9 ft according to floodmarks; infor­ mation from local resident. Remarks. Flow regulated by Grapevine Reservoir (see preceding table). B104 FLOODS OF 1957

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1, ___ 56 10 67 11 0 8 4.1 496 21--. 108 1,330 1,230 2 . 1.6 18 72 12 8 8.0 906 22 . 4.3 150 1,260 3 8.8 5.8 120 13 9 54 1,160 23 367 391 1,420 4 2.7 5.0 235 14 9 5.8 1,310 24 142 171 1,440 5 ...... 9 4.8 135 15 9 31 1,260 25 1? 1,310 1,440 6 .8 4.4 614 16- . 1 0 92 1,220 26 1,220 558 1,440 7...... 8 4.3 673 17 9 93 1,220 27 263 81 1,420 8...... 8 4.3 597 18 9 337 1,230 28 37 51 1,420 9 .7 4.4 505 19 157 2,190 1,240 29 97 51 1,420 10 .8 4.3 448 20 2.8 2,060 1,230 30 14 57 1,420 31 89

Monthly mean d ischarge, in cubic feet per E 83.7 296 955 Runoff, in acre-feet 4,980 18, 210 56,820

Gage height, in feet, and discharge in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 25 May 18 May 25 4.21 6.5 12m... 6.88 Qe 7.41 151 6.88 95 4...... 12.00 645 April 26 6 8.50 218 5 15.25 1,160 7...... 12.25 619 6 15.70 1,250 4a.m___ ...... 4.24 6.8 8 ...... 14.00 863 8 . 14.40 1,010 5 4.28 7.2 9..... _ . .... 15.50 1,110 9 ...... 14.00 941 6 15.00 1,030 10 16.60 1,320 10 - 16.00 1,310 7 19.90 1,950 11 ___ ...... 17.50 1,480 11.. . _ - 18.00 1,690 8 21.35 2 9fifl 12 ...... 18.35 1,640 18.80 1,850 10 20.30 2,030 3:30 p.m...... 19.65 2,030 ie nn i 7KA May 19 2:30 ..- 19. 30 1,950 17.00 1,390 20.97 2,320 3:301. 15.61 1,140 20.04 1,980 6 . 19.75 2,050 5 17.00 1,390 6 ...... 20.97 2,170 8 17.90 1,670 6:30. 18.09 1,590 21.90 2,400 10 15.50 1,210 10 17.05 1 4fifi 2 jnn 14.10 958 12 1,280 12 20.82 12 12.55 722 April 37 May 20 May 86 14.85 1,000 20.40 11.00 520 4 ...... 12.25 622 20.35 2,040 2 ___ ... 10.08 413 6 9.95 20.20 2.010 3 ...... 11.00 520 7 _ ... 8.90 254 4 ...... 14.00 941 g 7.35 121 May SI 6 ... - 15.48 1,210 6.15 60 10 14.00 941 5.56 36 20.18 2,010 12m...... 12.95 779 12 _ ...... 5.36 29 12m... 18.85 1,740 1 p.m...... 12.00 645 17.00 1,390 10.50 460 April 88 1,100 3 ...... 9.00 300 4 ...... 13.90 849 4 _____ ..... 7.40 150 5.23 26 5 .... 19 nn WQ 6...... 6.65 99 12 m_. 5.33 28 6 - 10.85 466 10 6.13 74 6.00 54 7- 9.65 345 11 8.75 275 3...... 6.63 83 Q 8.15 208 11:30 9.04 304 6 5.82 46 12 7.55 164 12 8.90 290 11 __ . _ ., 5.05 21 12 5.03 21 May 27 April 29 7.57 165 7.40 150 5.10 22 5 6.14 74 12m.. _ . _ 5.87 61 May 17 5.69 53 12p.m...... 6.84 93 12p.m...... 7,42 152 TEXAS AND ADJACENT STATES BIOS

73. ELM FORK TRINITY RIVER NEAR CARROUTTON, TEX. Location. Lat 32°57'55", long 96°56'40", near left bank on downstream side of pier of highway bridge, 40 ft upstream from Carrollton Dam, 0.3 mile down­ stream from Denton Creek, 1 mile upstream from St. Louis Southwestern Railway bridge, and 2.3 miles northwest of Carrollton, Dallas County. Drainage area. 2,457 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 432.23 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation denned by current-meter measure­ ments below 8,000 cfs. Maxima. April-June 1957: Discharge, 13,700 cfs 4:30 a.m. June 5 (gage height, 8.54ft). 1907 to March 1957: Gage height, about 28 ft May 25, 1908, at site 8.5 miles downstream at datum 22.94 ft lower, from floodmarks furnished by State Reclamation Department (discharge not determined); discharge subsequent to 1908, 90,700 cfs Apr. 26, 1942 (gage height, 21.05 ft), at site 8.5 miles down­ stream at datum 22.94 ft lower. Remarks. Flow largely regulated by Garza-Little Elm and Grapevine Reser­ voirs (combined capacity, 1,438,000 acre-ft).

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June -Day April May June

1 .... 835 2,230 6,350 11.- 1.5 4,160 3,580 21 938 4,720 4,930 2 9 2 4,320 8,580 12 9.3 2,540 3,560 22.. 186 4,560 5,150 3 8 3,620 11,400 13 27 1,020 3,670 23 2,410 5,750 5,320 4 2 6 1,500 11,600 14 7.2 136 4,410 24 1,420 2,080 5,320 5 8 1,260 12,200 15 33 628 4,470 25 943 5.420 5,150 6...... - 8 3,160 9,670 16 15 2,480 4,410 26 4,870 6,960 5,080 7 8 1,800 7,790 17 26 3,880 4,640 27.- 3,950 7,840 5,060 8 . 8 3,480 6,010 18 40 4,740 4,860 28. . 330 10,400 5,030 9 . 8 4,940 4,990 19 1,080 5,360 4,790 29.. 700 9,390 5,010 10 8 5,100 4,190 20 173 5,040 4,760 30 780 7,390 5,010 31 5,880

Monthly mean c ischarge, in cubic feet per 626 4,251 5,900 Runoff, in acre-ft>et 37, 270 261, 400 351, 100

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April it April $4 Con. AprU jW Con. 12p.m...... 86 47 1.40 308 1.75 622 3 ...... 1.80 664 7 2.70 1,460 April 2S 4-...... 2.40 1,190 8 4.00 2,950 6 ...... 3.48 2,300 5.15 4.720 4a.m...... 1.22 182 10 _____ 4.23 3,270 10 5.80 5.890 5 1.75 622 12 4.05 12m-- 6.33 6,960 6... . 2.34 1,140 6.55 7,420 8 ...... 3.32 2,110 4 ...... 6.43 7,170 10 4.00 2,950 6 ...... 6.42 7,150 12m..... _ . 4.57 3,780 3.02 1,780 8 6.66 7,660 3p.m...... 4.85 4,230 8 ...... 2.20 1,010 10 6.88 8,170 6... _ . . 4.62 3,860 12m___ 1.77 639 12...... 6.97 8,390 9...... 3.87 2,780 1.49 389 12...... 3.05 1,820 8 ...... 1.32 246 Apt lift 12.. . 1.20 170 April 24 6.87 8,150 April %6 4 ____ . _ .. 6.60 7,530 4a.m ...... 2.22 1,030 8 5.40 5,150 8...... 1.73 605 1.12 131 12m- . 4.26 3,310 12m...... 1.42 326 5 ...... 1.28 219 4 n.m...... 3.17 1,940 656087 O 62 8 B106 FLOODS OF 1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

Aprils-Con. May 7 May 17 8 p.m...... 2.37 1,160 3.24 3,890 12...... 1.83 689 2 60 1,370 4 94 4,370 5p.m...... 2.30 1,100 April 28 8...... 2.82 1,580 May 18 12...... 3.52 2,340 6 a.m ___ ... 1.40 308 5 19 d. 7on l?m__ 1.20 170 4 oon 3 p.m...... 1.16 150 8 . 5.23 4.860 9...... 1.55 445 4.05 5.33 12...... 1.47 371 12m .. .. 12...... 5.47 5,270 4.73 4,040 April $9 12...... 5.04 4,540 6 a.m...... 1.16 S CO 5,470 10...... __ . 1.03 94 K CK 5. 420 12m...... 1.12 131 12m...... 5.32 5.50 5,320 2p.m...... 1.46 362 5 42 E ion 12 5.42 c i on 3...... 1 90 7 JQ 4...... 2 07 6...... 2.93 1,690 7...-... .. 3.02 1,780 5.45 5,240 5.27 4,930 10...... 2.83 1,580 5,050 12 ... 2.51 4,660 April 30 May 11 5.58 5,470 12m...... 5.56 5,430 4 a.m...... 1.92 765 12m...... 4.78 5.77 5,830 8.. . . 1.55 445 4.66 3,930 8. 6.39 7,090 12m...... 1.32 9 4.63 3 QQn 5.77 5,830 4 p.m...... 219 12 4.46 6...... QOC 8 . 2.64 1,410 May 12 12...... 3.06 1 con 4.020 4.00 2,950 8...... 3.50 2,320 Mayl 12 m_...... 3.62 2 460 2.54 1,320 3.41 2,210 2.06 886 12m...... 3.25 19 2.66 1 Sft 731 4 p.m...... 3.30 2,090 1 78 647 8...... 3.68 May IS 12...... 4 60 3.830 1.97 ono May 2 8. .. . 1.55 1.74 614 10.. _ ...... 1.45 353 4 __ ... .. 1.89 740 4 a.m...... 4 99 4,450 706 5 8 - 5.10 4,640 2.60 1,370 6...... 1,710 12m.--...... 4.98 4,440 4:30...... 2.93 i cnn 7 3.70 2,560 12p.m...... 4.71 4,010 6 2.85 8 .. _ . 4.25 3.300 8...... 2.57 1.340 10 4.95 4,390 May 5 12...... 1.93 774 12m.. 5.55 5,420 6.48 7,280 12m...... 4.66 3,930 May 14 7.30 9,330 4 p.m.. ._. 4.52 3,700 7 54 10, 300 8 . 3.98 2,920 1.38 293 12...... 7.42 9,680 12 3.58 8...... 1.05 102 12m...... 72 24 May 4 .44 3.4 6.65 11 .36 .6 6 ...... 6.30 6,900 6 a.m...... 2.98 1,740 12. .56 8.6 g 7,220 12m...... 2.53 1,310 6.43 7,170 6p.m...... 2.36 1,150 S on 12...... 2.36 1,150 g 5 00 6 040 .87 49 19 May 5 8 ..... 99 80 12m .. __ . 1.02 91 12m...... 1.15 146 6 p.m...... 2.33 1,130 3 1.62 510 6.68 7,700 9-...-.... . 2.89 1,650 4 ...... 2.05 877 7 3fi 12...... 3.48 2,300 6 . .. 9. ___ . _ ... 3.10 1,870 12...... 3.30 2,090 12 p.m.., .... 6.47 7,260 May IS 4.07 3,050 12m... __ . 4.31 3.48 6p.m...... 4.45 3,600 2,700 7.04 8,580 12...... 4.00 2,950 12...... 4.31 3.380 12D.m._ 7.50 9.910 TEXAS AND ADJACENT STATES B107

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

JuneS June 4 Con. Junes Con. 6 a.m... 7.73 10, 700 7.86 11, 100 12m-.--..... 8.22 12, 400 12m...... 8.08 11,900 9...... 8.04 11,700 7.88 11,200 8.12 12, 000 12 ...... 8.33 12, 800 12.,.-- _ .... 7.66 10,400 12...... 8.08 11.900 Junes JuneG June 4 4:30 a.m...... 8.54 13,700 12m_...... _ 7.44 9,740 12m...... 7.94 11,400 8...... 8.44 13, 300 12p.m...... 7.12 8,810

74. TRINITY RIVER AT DALLAS, TEX. Location. Lat 32°47', long 96°48', on left bank on downstream side of left pier of Commerce Street viaduct at Dallas, Dallas County, 5% miles downstream from confluence of West and Elm Forks, and at mile 500. Drainage area. 6,120 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 368.02 ft above mean sea level datum of 1929, supplementary adjustment of 1954. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Discharge Apr. 1-2, Apr. 20 to May 16, May 22-28 based on rate of change in stage adjustment. Maxima. April-June 1957: Discharge, 75,300 cfs 7:30 p.m. May 26 (gage height, 41.72ft). 1903 to March 1957: Discharge, 184,000 cfs May 25, 1908 (gage height, 52.6 ft), from rating curve extended above 109,000 cfs. Maximum stage known since at least 1840, that of May 25, 1908; flood in 1866 reached about the same stage.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

I...... 3,650 7,200 21,700 11- . 88 9,740 13,300 21 3,440 12,100 9,650 1,310 12,300 19, 300 12 91 9,890 12,100 22 .- 5,220 11,900 10,300 3 596 9,810 18, 500 13..... 88 21,100 11,300 23. . 6,560 17,300 11,000 4...... 614 11,400 22,500 14..... 82 18,000 11,200 24- . 19,700 22,600 11,600 377 6,250 23,600 15 86 11,000 11,300 25 17,100 21,300 11,800 6- ... 202 4,530 23,600 16 89 9,730 10, 800 26..... 20,300 51,200 11,800 7 . 145 4,220 21,400 17..... 88 9,930 10,200 27. . 43,600 41,300 11,700 8 ... - 117 5,180 18,800 18 98 10,700 10,100 28 26,700 23,900 11,400 9 91 8,520 16,900 19..... 236 11,700 10,200 29 17, 100 21,900 11,000 10 95 9,760 15,200 20..... 3,310 12,200 9,640 30 .. 10,700 20,600 10,700 31..... 20,800

Monthly mean d ischarge, in cubic feet per 6,062 15,100 14,090 Kunoff, in acre-f3et 360,700 928,400 838,200 BIOS FLOODS OF 1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 19 April 16 Con. May 11 12p.m ...... 14.06 CEQ 14, 800 12p.m...... 30.08 9,130 8 ...... 31.50 17,200 1 a.m ...... 14.05 582 9...... 00 OK 16, 100 May It 3...... 15.47 12m... qq AH 4__ ...... 16.60 1,500 qq 70 22, 100 12 m...... 29.18 7,890 5...... 17.67 1,770 4 . *3A fin OK win 28.50 8,000 7...... 19.75 2,710 6 7_ 30.00 17, 100 9...... 21.23 3,360 9 36.50 32, 000 8. 31.45 18, 500 11...... 22.50 4,120 12- q7 KO 35,900 9.------31.92 14, 100 12m...... 23.25 4,590 31.98 13, 100 2 p.m.... _ . 24.08 4,670 A nrtJ 97 8...... 25.00 4 420 May IS 12--. -.. 24.42 3,180 38.15 4...--...-.... 38.78 44,900 3 a.m....--... 33.11 17, 200 6...... 39.33 48,200 7...... 34.01 20, 300 4 a.m ...... 23.02 2,630 10 QQ AE 49, 100 11 35.13 22,800 1...... 21.70 2 oon 39.57 46 900 qc IQ 22, 400 7:30- 21.45 qn 17 35.70 23, 800 9...... 22.18 3,620 19 qo A** 12...... 22.20 3,100 12m..-- . 22.78 April 28 22.96 3,430 qe 7-1 23,800 3 23.00 3,620 6a.m.-. __ :. 37,36 28, 400 3 ... 35.54 21,600 5 ... 23.43 a ?on 12m- qc KO q^ qn 17, 000 6 ...... 23.50 qc no 33.99 16, 300 7 ...... 23.47 3,660 12 35.70 12 33.24 13, 600 9 _ ____ 23.67 4,060 12...... 24.43 May tt April ft 5 a.m ...... 35.00 18, 300 12 p.m...... 31.67 12, 600 3 a.m ...... 25.67 6,130 12m. __ -..- OO OR 16,400 5 -- - 26.49 6,270 qq q^ 8 .... 27.18 12m. -.-...-- 27.54 6,190 April SO 31.75 12, 200 12:30 p.m ..... 27.56 8 - 31.57 11, 900 3 27.37 5,600 8 a.m ...... 31.49 10, 100 9_------32.55 20, 300 7 26.62 3.850 12 m...... 30.62 8 900 11 33.23 16, 200 9 ...... 25.90 30.45 9,250 12m-.. 33.30 16, 700 12 24.57 12- -. 33.45 18, 900 3- ...... 34.40 22, 100 April 23 4...... 34.50 19, 000 2 a.m ...... 23.55 29.95 6,090 5. - - - 34 52 20, 200 4.--....-.. ... 22.52 2 OQA 12m-. 28.67 19 22, 500 6- ..... 21.42 2,180 27.97 4,490 8 20.53 3,020 6 ...... - 29.22 10,400 May U 9 ... . 21.85 8-. . 30.23 10, 100 10 22.60 3,920 12 .. 30.98 11,900 12 m.. ----- 35.44 23, 300 12m 23. 78 4,720 35.50 23,000 24.63 5,980 9- ...... 35.37 22, 000 3 25.55 7,470 31.55 12,700 12 . 35.13 20, 200 4.--.. ------26.77 8,600 5:30... 31.70 12, 100 5 ... 27.84 9 7AA 11 31.53 11 800 6 28.74 12m.- --. 31.58 13, 000 8. -J ..... 11,700 32.17 20,300 10 13,500 12 31.66 4...... 34.87 20, 500 12 32.48 16, 400 8 - 34.57 19,300 10 34.80 20, 600 April 24 31.01 10, 200 12m- 34.80 20,600 33.27 18, 800 12m.. 30.45 9,490 4 p.m.. ------35.00 22, 000 6 ...... 33.75 30.00 9,030 12 35.43 24, 100 11---.-----... 34.11 19,500 9 _ _ 29.76 9,030 12m...... 34.10 IQ ^on 19 29.92 10, 400 May 26 33.90 18, 800 5 ...... 34.04 21,300 May 4 6 a.m .-. .- 36.50 30,500 34.66 23, 400 30.66 11, 500 10 37.90 40, 100 8 34.63 20,500 12m.- 31.25 11, 500 12m------39.08 53, 600 12 34.47 31.43 11,600 40.50 65,300 12 31.41 11, 400 4 41.30 71, 200 6 - 41.65 74,600 34.53 May 5 7:30-- - 41.72 75, 300 10 34.22 18, 300 31.23 10, 300 9 41.65 72, 400 33.88 17 200 7...... 30.52 7,550 12 41.30 65, 100 33. 10 14, 600 10- . 29.35 5,780 12 32.03 12m.-. 28.57 5,060 May %7 27.75 4,490 6 a.m ___ .-- 40.08 50, 200 April 86 6- ... _ ..... 26.67 4,000 12m------38.77 37,900 30.87 6,930 9- ...... 25.62 3,660 6 p.m. ------37.78 31,200 6...... 30.20 8,570 12 24.72 3,670 12 36.90 26, 900 TEXAS AND ADJACENT STATES B109

75. SISTER QROVE CREEK NEAR PRINCETON, TEX. Location. Lat 33° 12', long 96°29', on right bank at downstream side of highway bridge, 1.4 miles northeast of Princeton, Collin County, 2.3 miles downstream from Stiff Creek, 5 miles upstream from mouth, and 15 miles upstream from Lavon Dam. Drainage area. 115 sq mi. Gage-height record. Water-stage recorder graph, except May 13 to June 7, when gage readings were made twice daily by U.S. Army Corps of Engineers. Datum of gage is 487.52 ft above mean sea level, unadjusted (U.S. Corps of Engineers bench mark). Discharge record. Stage-discharge relation defined by current-meter measure­ ments below 6,000 cfs. Maxima. April-June 1957: Discharge, 9,080 cfs 11 p.m. Apr. 26 (gage height, 16.28ft). 1949 to March 1957: Discharge, 5,700 cfs May 2, 1950 (gage height, 15.77 ft). Maximum stage known since at least 1865, about 22 ft in July 1913; informa­ tion from local resident. Remarks. Flow from 13.0 sq mi above station partly controlled by five flood- water detention reservoirs with a combined capacity of 4,680 acre-ft below crests of flood spillways.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1. ... 395 1,530 1,180 11 . 32 177 171 21- 722 302 86 2 207 933 1,520 12 - 30 214 164 22 648 2,640 68 3 212 381 496 13- 28 1,240 167 23 1,020 1,930 65 4 -.__ 264 620 363 14 26 1,470 158 24 2,260 2,680 71 5 _ . 100 628 361 15 26 400 149 25 1,800 2,390 63 6. .. 67 248 308 16 26 421 140 26 3,290 4,330 43 7----... 54 212 227 17 27 571 137 27 3,870 1,990 36 8...... 44 200 202 18 27 822 131 28 1,390 356 33 36 204 188 19 132 630 124 29- 406 313 29 10 31 203 180 20 595 317 108 30 832 292 24 31- 459

Monthly mean d ischarge, in cubic feet per 620 939 233 Runoff, in acre-ff et 36,890 57, 720 13,870

Gage height, in, feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 22 April 24 Con. April 26 Con. 11.37 313 14.67 14.47 2,040 14.73 10...... 14.68 2,460 April 25 12m_._ 14.86 2,850 8 ..... 14.86 14.73 2,560 2 a.m. _ .. 11.14 293 12...... 14.65 2,400 6...... 14.68 2,460 11 97 367 7 ...... 6 ------13.06 528 April %S 8 ...... 15.70 5,800 8 13.61 849 9 ...... 16.05 7,700 12m...... 13.88 1,120 1 7 eft 10 16.25 8,900 3 p.nu-...... 13.93 1,180 12m- 14.25 1,640 11 16.28 9,080 6--...... 14.15 1,480 14.32 1,770 12 .. ... 16.21 8,660 9 -. .... 14.26 1,660 12 14.27 1,680 12 ...... 14.19 1,540 15.70 5,800 April 24 8...... 15.20 3,800 14.95 3,080 4 a.m...... 14.15 1,480 5 ...... 14.18 1,530 14.72 2,540 6. ______14.23 1,610 7 ...... 14.37 1.860 12...... 14.55 2,200 B110 FLOODS OF 1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 28 May 4 May 22 Con. 6 a.m ...... 14.38 1,870 19 CH AQQ 13.12 *U8 12m...... 14.14 1,460 3 ..... 12.94 498 9 .... 13.45 725 4 p.m...... 13.88 1,120 5 .... 12.77 464 10 13.90 1,140 8 ...... 13.43 711 7 19 71 452 14.40 1,910 12...... 12.81 472 Q 19 04 408 14.90 2,950 12 m 13.27 615 15.40 4,500 April 29 13.47 739 4 ___ . ___ . 15.50 4,900 12 13.66 894 8 ..... 15.45 4,700 12.32 402 12. . 15.15 3,650 8 ...... 12.00 370 11...... _ .. 11.92 363 12m...... 11.93 364 13.78 1,010 1 p.m...... 12.07 377 6...... 13.81 1,040 14.55 2,200 3...... 12.28 398 8 ...... 13.70 930 g 14.18 1,530 6...... 12.27 397 10 13.39 683 13.90 1,140 9...... 12.68 432 12 m...... 12.95 500 14.18 1,530 12 ...... 13.00 510 12.20 390 14.48 2,060 8 ...... 11.55 330 12 14.73 2,560 April SO 12 11.05 286 May 24 13.20 580 May 11 13.26 610 14 95 3 fifift 6 ...... 13.40 690 9.53 173 8 ...... 15.10 3,500 9...... 13.50 760 12m...... 15.15 3,650 12m..-- ~ 13.52 776 May IS 14.85 2,820 13.57 816 14.55 9 90ft 6...... 13.68 912 9 EC 8 ...... 14.28 1,700 9_...... 13.82 1,050 6...... 9.55 174 12 H. 10 1,400 12 14.23 1,610 12m...... 9 KQ 173 9.53 173 8 10.20 219 10.90 97/1 13.95 1,200 2 a.m __ ... 14.37 1,860 10...... 12.50 420 10. _____ .. 13.97 1,220 3 .... 14.38 1,870 19 13.30 630 14.18 1,530 12m...... 14.15 1 4«n 14.60 2,300 14.05 1,330 May 13 15.15 3,650 14.02 1 9QO 6 ...... 4,150 12 14.06 1,340 13 fin 1,030 12 15.25 3,980 12m-. . 14.00 1,260 May 2 14.13 1,450 May 26 12...... 14.33 1,780 14.03 1,300 15.20 3,800 12m-. 13.77 1,000 8 15.20 3,800 13.28 620 10 15.60 5,350 13.03 KIQ 14.42 1,950 15.82 6,400 10 13.08 534 12m.. . 14.35 15.50 4,900 12...... 12.95 500 14.00 1,260 8 ... 15.15 3,650 8...... 13.50 760 12 14.70 2,500 May 3 12 12.93 496 May 27 12.43 413 May 21 14.25 1,640 8 ...... 11.94 365 6 ...... 14.10 1,400 12m. 1. _ ... 11.60 334 13.05 525 8 14.20 1,560 329 14.84 2,800 2 ... 11.63 337 May 22 15.13 3,590 6...... 11.94 365 13.50 760 5- ..... 14.95 3,080 11.97 367 13.53 784 7 - 14.20 1,560 10...... 12.08 378 4 ..... 13.25 605 9 ...... 13.40 690 12 - 12.59 434 6 .. _ . ... 13.08 534 12...... 12.60 435

76. :LAVON RESERVOIR NEAR LAVON, TEX. Location. Lat 33°02', long 96°29', on right abutment of spillway in dam on East Fork Trinity River, three-quarters of a mile upstream from St. Louis Southwestern Railway bridge, 1 mile upstream from bridge on State Highway 78, and 2.5 miles west of Lavon, Collin County. Drainage area. 777 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is at mean sea level, datum of 1929. TEXAS AND ADJACENT STATES Bill

Maxima. April-June 1957: Contents, 462,800 acre-ft 6 p.m. May 26 (elevation, 491.90ft). 1953 to March 1957: Contents, 155,200 acre-ft May 3, 1956 (elevation, 473.03ft). Remarks. Reservoir is formed by a rolled earth-fill dam, 9,499 ft long, including a 568-ft gated spillway. Outlet works consist of twelve 40- by 28-ft taintor gates and five sluices, 3 ft in diameter. Deliberate impoundment of water began Sept. 14, 1953, and dam completed in October 1953. Capacity, 423,400 acre-ft at top of taintor gates (elevation, 490.0 ft), 143,600 acre-ft at top of conservation storage (elevation, 472.0 ft), 56,290 acre-ft at crest of spillway (elevation, 462.0 ft), and 14,300 acre-ft at invert of sluices (elevation, 453.0 ft). Figures represent total contents. The reservoir is designed for flood control and conservation. Records furnished by U.S. Army Corps of Engineers. Elevation, in feel, and contents, in acre-feet, at 12 a.m. of indicated day, 1957

AI>ril May June Day Elevation Contents Elevation Contents Elevation Contents

1 _-.-.. 469. 58 118,300 488.72 398, 200 480.96 262, 700 2 ...... 470.20 124, 500 489. 01 403,800 481. 79 275, 700 3 470. 56 128, 200 488.84 400,500 482. 26 283,300 4...... 470. 92 131, 900 488.84 400,500 482. 54 287, 800 5...... 471.03 488.64 396,600 482. 89 293, 500 6...... 471. 04 133, 200 488.32 390,500 483.02 295,700 1...... 471. 10 133. 800 487.96 383,500 483. 09 296, 800 8...... 471. 10 133, 800 487. 62 377, 100 483.15 297,800 9 ...... 471. 10 133, 800 487. 30 371,100 483. 24 299,400 10 ...... 471. 10 133, 800 486.99 365, 300 483. 25 299,500 11 471. 11 133, 900 486.63 358, 700 483. 29 300,200 12... . .-...... 471. 11 133, 900 486. 48 356,000 483.31 300, 500 13.. . .. 471. 11 133, 900 487. 77 380,000 483.34 301,000 14 471. 10 133, 800 488. 70 397, 800 483.38 301, 700 15 . . . 471. 10 488.65 396,800 483.39 301, 900 16...... 471. 10 133, 800 488.65 396,800 483.42 302, 400 17 471. 11 488 50 393,900 483. 44 302,700 18 471. 12 488. 35 391,000 483. 48 303, 400 19 471. 17 134,600 488.24 388,900 483.48 303,400 20 472.32 147, 200 487.86 381,700 483.48 303,400 21 473. 06 155, 600 487.56 376,000 483. 48 303,400 22 473. 69 488.00 384, 300 483. 49 303,600 23 474.97 178, 700 488.89 401, 500 483. 51 303,900 24 . 477. 30 209,300 490.06 424,600 483.50 303, 700 25 479. 39 239,000 491. 26 449,300 483.49 303, 600 26 482. 78 9Q1 7flfl /491.54 455,200 483.45 302,900 27 486.57 357, 600 489. 52 413,900 301,200 28 ...... 487. 15 368, 300 487. 69 378, 500 483.19 298, 500 29 ...... 487. 24 370,000 485. 93 345,900 482.98 295,000 30...... 487. 81 380, 700 484.00 312, 100 482. 78 291,700 31 ...... 482.15 281,500 Change in contents, acre-feet...... +267, 400 ...... -99,200 ...... +10.200

77. EAST FORK TRINITY RIVER NEAR LAVON, TEX. Location. Lat 33°01'23", long 96°28'32", on left bank at downstream side of bridge on State Highway 78, 150 ft downstream from St. Louis Southwestern Railway bridge, 3,500 ft downstream from Lavon Dam, 2.5 miles west of Lavon, Collin County, and at mile 54.9. Drainage area. 779 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 429.58 ft above mean sea level, datum of 1929. B112 FLOODS OF 19J57

Discharge record. Stage-discharge relation denned by current-meter measure­ ments below 5,000 cfs. Stage-discharge relation unstable or indeterminate May 3-14, 24-31, and June 1. Discharge for these periods from records of released flow from Lavon Reservoir furnished by U.S. Army Corps of Engineers. Maxima. April-June 1957: Discharge, 39,000 cfs May 26, 27, from records of released flow from Lavon Reservoir furnished by U.S. Army Corps of Engineers; gage height, 17.34 ft 9 a.m. May 26. 1953 to March 1957: Discharge, 1,390 cfs May 5, 1956 (gage height, 13.37). Maximum stage known since at least 1894, 22.3 ft in 1913 and in April 1942; information from St. Louis Southwestern Railway Co. and local residents. Remarks. Flow regulated by Lavon Reservoir (see preceding table).

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1_ . 9.3 1,700 13,600 11.. 9 6 3,820 9.8 21.. 9.3 3,860 6.2 9.1 2,200 160 12 9 1 3,790 9.8 22 116 3,820 6.2 3 9.6 4,000 41 13 9 1 2,400 12 23 .. 226 3,820 6.4 4-- . 9.3 4,000 23 14 9 6 3,000 18 24. . 12 5,860 6.4 5 9.3 4,000 19 15. . 9 8 4,240 15 OF; 11 13, 400 3.8 6...... 9.3 4,000 25 16 9 8 4,240 16 26..... 121 36, 800 322 7 9.3 3,960 13 17.. 9 8 4,100 14 27 23 27,700 856 8...... 9.3 3,600 12 18. . 9 8 4,060 10 28 744 19, 400 1.260 9 9.6 3,860 11 19 9 8 4,020 3.6 29 .. 1,700 17,200 1,570 10...... 9.6 3,840 10 20..... 9 6 3,980 2.4 30 1,700 17,200 1,570 31 17, 600

Monthly mean c ischarge, in cubic feet per 162 7,735 654 Runoff, in acre-fe et 9,620 475, 600 38,920

78. EAST FORK TRINITY RIVER NEAR CRANOALL, TEX. Location. Lat 32°38', long 96°29', on right bank at downstream side of bridge on U.S. Highway 175, 4,500 ft downstream from Mustang Creek, 1.8 miles northeast of Crandall, Kaufman County, 2.9 miles upstream from Little Buffalo Creek, and at mile 13.8. Drainage area. 1,257 sq mi. Gage-height record. Water-stage recorder graph except June 21-30, for which graph was drawn on basis of several readings made daily from telemark located inside gage structure. Datum of gage is 343.69 ft above mean sea level, datum of 1932. Discharge record. Stage-discharge relation defined by current-meter measure­ ments below 18,000 cfs. Maxima. April-June 1957: Discharge, 33,000 cfs 1 p.m. May 28 (gage height, 22.81 ft). 1949 to March 1957: Discharge, 24,000 cfs May 4, 1950 (gage height, 22.12 ft). Remarks. Flow largely regulated by Lavon Reservoir. The flow from 45.1 sq mi above this station and below the station near Lavon was partly controlled by 17 floodwater detention reservoirs with a total combined capacity of 15,340 acre-ft below the crests of flood spillway, of which 12,820 acre-ft is floodwater detention capacity and 2,500 acre-ft is sediment storage capacity. TEXAS AND ADJACENT STATES B113

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 408 3,620 14, 400 11 60 4,900 455 21 1,100 4,450 231 668 8,120 14,500 12 51 4,850 402 22 1,530 4,470 187 3__.__._ 1,050 9,270 11,000 13 43 10,300 357 23 2,680 6,370 171 4_ 1,130 5,530 5,240 14 39 16, 800 326 24 . 4,520 15, 500 163 5- _ ... 1,260 4,450 2.210 15 36 12,400 293 oc 6,880 14, 900 148 6...... 661 5, 040 1,710 16 33 5,210 265 26 9,340 14,600 124 200 4,970 1,520 17 32 4,850 245 27 20,200 24,900 118 8 124 4,900 1,100 18 32 5,040 242 28 13,700 30,200 321 9...... 93 4,940 741 19 33 4,900 345 29 7,310 21,600 491 10--.. 76 4,940 551 20 369 4,650 453 30 3,760 16,000 605 31 14, 500

Monthly mean c ischarge, in cubic feet per 2,581 9,586 1,964 Runoff, in acre-feet 153, 600 589, 400 116,900

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 19 April 27 Con. May 16 12p.m_- ..... 5.26 38 21.48 99 4nn 14.92 5,960 8 20.86 12m-- 14.48 4,680 April 20 12 20.18 17. 600 14.31 4,160 12 14.36 4,320 38 4...... _ 49 5. ------6.30 82 19.42 6.-.. -___-. __- 7.50 to 07 13, 600 14.45 4.610 8.40 217 12. 000 8 281 17 Pi7 10- 9 80 383 12m... . 10.15 14.57 4,970 10.75 555 14.97 6,100 12 11.15 642 12m-. 16.14 8 15.95 8.920 14.93 4,830 12 17.05 12, 700 April 21 April SO May %4 12.07 928 12 m -_-_- 12.76 1,220 4,090 18.07 15, 100 12p.m. ---- 1,340 12m. 14.24 3,560 12 m_.. ----- 18.43 15. 900 14.11 3,310 18.57 16, 300 April22 12---_- _ .. 14.12 3,330 12 18.62 16, 500 lOa.m- .... 13.28 1,540 May 1 May 25 13.37 1,640 18.10 15, 100 April 28 3,330 17.11 12, 900 9 14.33 4,230 6 a.m .. _- 13.49 1,790 12 14.67 5.240 May 26 12 m...... 13.91 2,740 U QQ S fifin May 12 17.04 12. 700 12 3 AAf\ 17.62 14, 400 12p.m. __ _ 14.56 4,940 18.22 15, 400 12 19.07 17. 900

H er* A f\f\f\ 15.00 12 16.11 7,020 12m...-----. 16.18 9,660 20.30 22, 500 17.84 14, 800 12m.- 21.37 26, 800 12 18.55 16, 200 21.63 27, 800 16.26 7,320 12 21.38 26, 800 12p.m... _-_ 18.83 17, 100 10 . .. 18.87 17, 200 21.26 26, 300 6 . 22.14 30, 000 8 ------6,400 18.72 22.79 33,000 12m... 16.82 8,440 12 18.37 22.81 33,000 18.23 11. 800 6 ------22.45 31, 400 12 . 19.74 16, 200 May 15 12 21.50 27, 300 April 27 17.78 14. 700 May 29 20.77 17,10 12m... . 22,400 16.30 10, 100 19.88 20, 800 2p.m.. -_... 21.58 22, 800 12...... ' 19.01 17, 700 B114 FLOODS OF 1957

79. TRINITY RIVER NEAR ROS8ER, TEX. Location. Lat 32°25'40", long 96°27'50", on left bank at downstream side of left pier of bridge on State Highway 34, 2.5 miles south of Rosser, Kaufman County, 8.5 miles downstream from East Fork Trinity River, and at mile 451. Drainage area. 8,162 sq mi. Gage-height record. Water-stage recorder graph except 5 p.m. May 3 to 3 p.m. May 17, for which graph was drawn on basis of wire-weight gage readings made three times daily by U.S. Weather Bureau. Datum of gage is 302.65 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maximums. April-June 1957: Discharge, 56,000 cfs 9 p.m. May 29 (gage height, 38.00ft). 1924-25, 1938 to March 1957: Discharge, not determined Apr. 23 or 24, 1942, following many breaks in levee system on both banks; daily discharge, 133,000 cfs Apr. 23, 1942. Maximum stage known, 41.55 ft Apr. 22, 1942, just before levee breaks. Flood in May 1908, before construction of levees, reached a stage of about 33 ft; information from U.S. Army Corps of Engineers (discharge believed to have been about the same as that of Apr. 23 or 24, 1942). Remarks. Flow largely regulated by reservoirs above Dallas and by Lavon Reservoir on East Fork Trinity River. At times during flood periods there was uncontrolled flow over the spillway of each major reservoir upstream. There are 30 floodwater detention reservoirs with a total combined capacity of 26,840 acre-ft below the.crests of spillways above this station and below Trinity River at Dallas and East Fork Trinity River near Lavon. Levee system constructed in 1916. During April and May, levees in 8 levee districts upstream from sta­ tion, downstream from Dallas on mainstem, and downstream from Lavon Reservoir on East Fork were overtopped or breached by floodflows.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

!._.____ 1,950 26,200 47,100 ll.___. 310 12,700 22,800 21..... 5,960 18,600 9,920 2. ______4,700 28,300 44,400 12.____ 278 13,300 20,500 22_____ 8,710 17,800 9,560 3______4,310 27,300 42,500 13_____ 258 16,200 18,000 23_____ 9,730 18,700 9,260 4 4,040 25,400 39,000 242 27,900 15,800 24__.__ 15,100 22,000 9,220 5__-_-__ 2,370 22, 800 34,800 222 30,800 14,100 25. - 21,200 28,200 9,460 6- __. 1,910 19,900 32,500 16__.__ 214 29,800 12,500 22,900 32,900 9,920 7______1,350 17,400 31,200 17--__- 222 26,400 11,500 27- 38,400 38,400 10,400 8______664 15,400 30,100 18-____ 222 24,400 10,800 28___._ 50,700 47,700 10,700 9______436 13,600 28,100 19-____ 228 22,200 10,300 29__ 43,200 54,600 10,800 10______352 12,900 25,400 20_-._- 1,190 20.100 10,100 30-__._ 31,900 54,600 10,800 31-.___ 51,000

Monthly mean discharge in cubic feet per 9,109 26, 370 20, 058 Runoff, in thousands of acre-feet 542.0 1,621 1,194 TEXAS AND ADJACENT STATES B115

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 19 April 25 May IS 12p.m...... 4.50 234 30.11 16, 700 28.95 13, 400 10 - 31.14 21,700 6 ------29.03 13, 600 April 20 12m.. __ .. 31.32 22, 600 9 29,10 13, 800 31.42 23, 100 12m-- - 29.34 14, 400 4.53 238 4 ------31.48 18, 600 3. ----- 4.58 244 6 ------31.53 23,600 4 ...... 4.73 262 31.47 23, 400 5 5.02 300 1 9 31.36 6 ------6.45 8. 7.27 672 April 26 32.15 26,800 10------7.85 788 6 32.30 27, 500 2p.m.--.- ... 9.35 1,150 31.23 22, 200 37.40 28, 000 8 12.82 2,220 10------31.23 22,200 32.52 28,600 12 14.70 2,960 31.27 22, 400 32.58 28, 900 23, 000 12 32.76 29, 800 April 21 8 31.52 23,600 12 . 31.94 25, 700 16.30 3,680 6 17.40 4,220 12m.- 32.99 31,000 10 20.15 5,730 33.07 31, 300 21.75 6,730 32.63 29,200 8_ _ 23.55 7,900 8 -- - . 33.57 33,800 May He 12 __ _ 24.55 8,620 39, 600 44, 100 33.66 34, 300 April 22 46, 800 12 _ -. 36.50 48, 500 May 27 24.94 8,920 \...... 25.16 9,080 April 28 33.90 35, 500 5...... 25.20 34.38 37, 900 6 ------25.20 37.12 35.60 44,000 8_ ... 25.12 9,050 Q...... 07 on 24.37 8,490 52, 200 May 28 6_ 24.25 8,400 12 37.20 52, 000 8 24.17 8,340 36.07 46, 400 12 -____ -__ 24.12 8,300 36.60 49, 000 12...... 37.13 51,600 April 2S 37.15 51, 800 6 ------36.20 47, 000 May 29 24.04 8,240 35.30 42, 500 6.__ ...... 24.11 8.290 34.60 39, 000 37.56 53, 800 8 24.43 8,530 12 34.05 36, 200 12m- 37.85 55,200 27.05 37.97 55, 800 10 28.40 12, 400 9 38.00 56. 000 12 28.82 13, 100 12 37.97 55, 800 33.55 33, 800 April 24. 32.75 29, 800 May SO 12 32.45 28, 200 29.32 14, 300 37.74 54, 700 8. 29.60 15, 000 37.40 53, 000 29.82 15, 700 12 . 29.98 1 fi 9nn 98 Qfi

80. CEDAR CREEK NEAR MABANK, TEX. Location. Lat 32°19'45", long 96°10'05", on right bank at downstream side of bridge on State Farm Highway 85, 2 miles downstream from Lacys Fork, and 5l/z miles southwest of Mabank, Kaufman County. Drainage area. 734 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 285.50 ft above mean sea level, unadjusted. Discharge record. Stage-discharge relation defined by current-meter measure­ ments below 16,000 cfs and by slope-area measurement at 35,400 cfs. Maxima. April-June 1957: Discharge, 26,300 cfs 5 a.m. Apr. 28 (gage height, 21.07ft). 1938 to March 1957: Discharge, 44,800 cfs Mar. 30, 1945 (gage height, 25.43 ft), from-rating curve extended above 16,000 cfs on basis of slope-area measurement at 35,400 cfs at site 12 miles downstream. B116 FLOODS OF 1957

Maximum stage since at least 1889, that of Mar, 30, 1945. Flood of Sept. 29, 1936, second highest since 1889, reached a stage of about 23.5 ft; information from local resident.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

!______696 5,810 259 60 110 51 21_____ 13, 500 118 1.5 2_ 1,710 4,910 877 12..... 48 102 38 22____ 17, 100 101 1.2 3_____-- 2,270 3,820 1,920 13___-_ 42 540 30 23,____ 15, 900 2,610 1.0 4__.____ 4,430 3,860 3.400 14.--.. 37 2,700 25 24.__._ 19, 800 8,140 2.2 5----. 6,100 3,420 3,110 27 8,880 17 25_____ 23,100 6,520 1.0 6______5,860 1, 8EO 2,070 16-____ 22 4, 580 12 26- 19, 700 6,230 13 1,840 649 1,420 17-____ 19 1,490 8.2 27_____ 17, 300 4,920 11 8______279 197 335 18 16 583 6.2 28 __ 23, 600 2,930 6.5 9 106 148 124 19-____ 39 216 4.8 29__ 13,700 1,700 3.0 10_-___ 74 132 74 20.____ 3,710 144 2.5 30.. 7,380 448 .8 180

Monthly mear i discharge, in cubic feet per second 6,616 2,517 461 Runoff, in acre -feet 393, 600 154,800 27, 420

Gage height, infect, and discharge, in cubic feet per second, at indicated time, 1951

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 7 April 23 Con. AprilS9 Con. 12p.m.., .... 8.35 655 12 m__ ...--_- 18.58 15,500 12m... 18.06 13,400 18.90 16, 900 17.45 11,000 April 18 12___ __- 19.33 18, 900 12...... 17.00 9,320 12 p.m...... 98 16 April 24 April 30 April 19 19.63 20 000 16.60 8,000 10...... 19.82 20,800 12 m...... 16.30 7,140 .95 15 16.08 6,590 7------.. _ 1.65 40 12...... 19.45 19,200 12. 15.94 6, 260 9...... 2 on 102 12.-. ------4.30 211 April SO 19.68 2.70 96 20.25 22, 700 2a.m. 5.75 348 11 . 20.62 24, 300 May 13 4 - 8 An 613 20.70 t)A 7Af» 6...... 11.10 1,130 7. . ----- 20.66 2.62 91 8...... 12.95 1,800 12 ...... 20.38 23,300 10_- 3.40 142 10 13.70 11 - 4.25 208 12m...... 14.05 2,700 12 m.. ------5.00 273 14.38 3,110 348 4 - 15.10 4,410 19.93 21,300 2 6.65 451 6 ...... 6,170 19.53 3 - 8.10 625 8... 16.50 7,700 19.12 17,800 9.95 898 10 12 7 11.20 1, 160 12...... 17.23 10,200 12...... 12.45 1,540 April 27 April n May 14 18.52 15, 300 17.88 18.60 13.10 1,890 8...... 18.15 13, 700 8 19.55 19, 600 12m. .._-.... 13.80 2,440 12m...... _. 18.10 13,500 10. . 20.15 22, 300 14.20 2,880 18.10 13, 500 12 24, 200 10 15.07 4,350 8 12. 16.10 6,640 12..-...... 18.73 16, 200 April 28 20.98 25, 900 May 15 April tZ 5...... 21.07 26,300 21.03 26,100 17.35 10, 600 9.13 17 800 9 oe 7An 11, 100 8 ...... 19.27 18, 400 20.65 10...... 17.27 12m...... 19. 15 17, 900 20.20 16.98 9,250 6 p.m...... 18.80 16, 500 8 ...... - 19.75 6 16.50 7,700 12...... 18.44 14, 900 12-...... 19.35 18 snn 12 16.00 6,400 April S3 April t9 May 16 6 a.m...... 18.30 14. 400 6a.m ...... 18.73 16. 200 6 a. m_ ...... 15.60 5.490 TEXAS AND ADJACENT STATES B117

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957- Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May 16 Con. May %4 June 1 12m_ .... 15.20 4,620 16.80 8,640 12 p.m...... 5.57 330 6p.m...... 14.75 3,700 7 ------16.97 9,220 12_- .. 14.00 2,650 16.65 8,160 12...... 16.30 7,140 6.33 413 8 8.33 653 13.40 2,100 12m _ -- 9.87 882 8 __ . 12.55 1,590 15.95 6,280 11.12 1,140 12m 11.70 1,290 15.93 6,240 12. . 12.18 1,440 10.80 1,070 12 16.13 6,710 12_...... 10.00 908 June 3 May ZB 12.87 1,760 16.18 6,830 13.40 2,100 2.69 95 12 m...... 1 K QC 6,280 12.. . 13.68 2,330 15.55 5,380 May 83 June 4 May 27 2.75 99 14.25 2,940 3 247 5,010 14.80 3,800 4 _ . 7 nn 493 15.45 5,160 8 - 15.00 4,200 9.40 4,830 12--. _ -_.--. 14.90 3,990 6 - 11.30 1,180 12. 14.90 3,990 12.83 1,730 13.58 2,240 14.60 3,360 12m...... 14.36 3,080 8- - 15.40 5,050 12m...... 14.10 2,760 12 p.m...... 13.64 2,300 12...... 16.25 7,010 13.57 2,240

81. HIGHLAND CREEK NEAR RICHLAND, TEX.

Location. Lat 31°57', long 96°25', on left bank at downstream side of bridge on U.S. Highway 75, 750 ft downstream from Texas and New Orleans Railroad bridge, 1 mile north of Richland, Navarro County, and 3.5 miles downstream from Pin Oak Creek. Drainage area. 737 sq mi. Gage-height record. Water-stage recorder graphs except May 11-26, for which no record was obtained for the main channel. Datum of gage is 299.12 ft above mean sea level datum of 1929, Fort Worth supplementary adjustment of 1942. Supplementary water-stage recorder, 3,900 ft to right of regular gage at same datum. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Discharge in main channel for period with no record of gage height estimated on basis of records for supplementary gage and records for stations on nearby streams. Maxima. April-June 1957: Discharge, 44,600 cfs 9 a.m. Apr. 21 (gage height, 23.11 ft). 1939 to March 1957: Discharge, 58,900 cfs May 12, 1948 (gage height, 24.16 ft). Maximum stage known since 1899, 25.5 ft in December 1913; information from Texas and New Orleans Railroad. B118 FLOODS OF 1957

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

I...... 2,360 3,300 3,040 11--.. 0 436 128 21 38, 400 720 149 2.______2,230 4,450 2,420 19 0 356 103 22 24, 500 1,200 120 3 1,220 8,160 8,54 13 0 6,120 96 23 16,200 2,000 95 4_____._ 2,120 6,010 1,330 14 0 11, 100 92 24 33,500 3,000 76 5 672 3,210 3,640 15 0 7,220 90 25 20,800 5,020 54 6 352 930 4,170 16 19 2,520 81 26 . 14, 400 1,890 42 T...... 104 520 836 17 32 1,100 74 27 8,390 554 27 8 . 44 367 266 18 0 520 68 28 9.780 300 20 9. ... 31 436 201 19 213 450 67 29 7,540 235 13 10 19 895 154 20 11,300 400 199 SC­ 4,270 213 10 SI 689

Monthly mean c ischarge, in cubic feet per > 6,617 2,397 617 Runoff, in aere-fc et 393, 700 147, 400 36, 730

82. CHAMBERS CREEK NEAR COR8ICANA, TEX.

Location. Lat 32°06'30", long 96°22'15", on right bank at downstream side of bridge on State Highway 31, 500 ft upstream from St. Louis Southwestern Railway bridge, 6,000 ft upstream from city of Corsicana diversion dam, 6 miles east of Corsicana, Navarro County, and 17 miles upstream from Rich- land Creek. Drainage area. 971 sq mi. Gage-height record. Water-stage recorder graph except June 10-18, 21-30, for which only ranges in stage were recorded. Datum of gage is 294.26 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Discharge for periods with no record of gage height estimated on basis of recorded ranges in stage, records of weather, and records for Richland Creek near Richland. Maxima. April-June 1957: Discharge, 23,200 cfs 2 a.m. May 24 (gage height, 25.94 ft). 1939 to March 1957: Discharge, 48,000 cfs May 3, 1944 (gage height, 27.19 ft). Maximum stage known since at least 1913, about 27.5 ft in December 1913; information from local residents.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 783 3,070 3,610 11 18 566 180 21 11,400 349 270 2 1,560 9,030 3,090 12 14 1,160 170 22 15,800 261 130 3______- 1,820 11,500 1,190 13 12 2,100 160 23 . 7,910 9,460 80 4 2,690 4,620 739 14 11 8,510 150 24___._ 20,100 17, 300 50 5-___-__ 997 3,160 2,210 15 9.7 10,800 140 25 19,400 5,690 40 6 198 2,630 1,660 16 9.7 3,240 130 26 16,900 2,820 35 1...... 79 852 572 17.. 11 863 130 27 8,840 1,000 30 8 ... 39 397 335 1 A 9.2 462 130 28 . 6,520 514 25 9 31 363 254 19 30 372 271 29 . 5,450 353 22 10 23 471 220 20- 4,220 461 545 30 3,480 231 18 31 1,540

Monthly mean c ischarge, in cubic feet per s 4,279 3, 360 553 Runoff, in acre-fe et 254, 600 206, 600 32, 920 TEXAS AND ADJACENT STATES B119

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 18 May 2 Con. May 24 12p.m._ __ 6.34 8.8 24.83 16,000 25.94 23, 200 6.... ------25.76 22,000 *l]JTli 1 a 12m- 25.18 17, 300 8 0 OQ 7C 9 CAA 8 ...... 14 24 84 16,100 9...... 6.59 9°. 3 04 on 15,800 10...... 6.93 6...... 24.63 14, 800 11...... 8.10 208 9,320 23.12 5,810 12...... 10.39 KAO 23.40 7,400 22.84 4,540 12...... 23.25 6,530 12 . 22.64 3,920 12.13 767 May 11 4...... 15.73 i qcn 9 07 oco 6...... 17.18 1,620 8.68 276 9...... on 1 9 2 1 Aft May IS 007 10. .. 20.80 2 340 9 1ft 2p.m...... 22.48 3,540 5...... 9.56 387 4...... 23.08 5,600 7... 11.60 8.66 273 5...... 23.50 8,000 12m...- . 15.94 1,400 5 8.85 296 12...... 23.64 8,840 17.44 1,670 6 ...... 10.00 447 8 - 17.84 1,740 8 14.24 1,110 jri^JI It, Kl 12.. . 17.95 1,760 12m 18.55 1,870 23.61 20.14 2,170 6 23.80 9,800 8 _ ------21.12 2,450 23.82 9 QOft 14.96 i 9°.n 12 21.66 2,700 5...... 23.97 8 - 1,740 8 24.61 14, 700 12m 1 Q CO 2,070 12 25.72 91 Sftn on no 2 q on 8 21.73 2,740 22.41 3,400 12 22.27 3,170 9 _____ . 22.57 3,750 2a.m.-...- ... 25.90 23, 000 22.67 4,020 4...... 25.78 22, 200 May 14 12-.------..- 22.51 3,600 12m-. 24.67 15,000 22.67 4,020 24.06 n Aftft 11...... 23.19 6,200 12 23.61 8,660 23.63 8,780 14, 700 12m-- . 22.25 3,140 12 24.81 15, 900 22.13 3,010 23.40 7 4nn 6 21.89 2,830 23.33 May IB 9... ------21.52 2,630 23.37 24.82 15,900 12 20.76 2,330 7 23.46 7,760 4...... _ .. 24.72 15, 300 10 23.78 S con 24.38 13, 300 12 24.46 10 Oftft 23.48 7 oftn 18.50 1,860 g 8 - 15.93 1,400 12...... _ 22.93 4,890 12m.- 13.70 1,020 2a.m_.__ ..... 25.14 18, 000 12.26 788 4 25.50 20, 400 8...... 11.35 645 91 7OO 3,800 12. 10.81 564 9 oc on 99 °.nn 22.30 3,210 11.. ... 25.77 99 inn 21.83 2,800 June 4 25.53 21.06 2,420 10.52 520 4...... 25.53 8 20.13 2,170 B...... 10.61 534 10 1 ft °.nn 10 1ft 79 i QOO 10.90 577 12 17, 800 17.25 1,640 12.30 794 8 .... 13.30 954 April SB May 17 12 17.84 1,740 2 a.m...... 25.06 17,500 13.61 1,000 8...... 18, 700 10 797 25.58 20,900 12m- 11.76 708 20.39 2,130 8 25.54 9ft fiftn 615 8 20.77 2,330 12...... 10.65 540 20.64 2,300 8 --- 20.70 2,310 18, 700 10 20.64 2,300 24.74 15, 400 8.43 246 12 20.39 2,130 April 87 May %3 June 6 23.84 10, 000 8.43 246 19.94 2,130 12m- 23.57 8,420 3 ...... 8.87 298 8 ----- 18.68 1,890 23.48 7,880 12.40 810 12m- 17.92 1,760 15.58 1,340 17.02 1,590 May 1 18.63 1,880 8 14.85 1,210 12 p.m...... 22.20 3,080 9 ... 20.06 2,150 12 - 13.13 927 11 21.80 2,780 12m.. 22.78 4,340 22.36 3,310 23.57 8,420 11.72 701 8 ------22.70 4,100 2...... 23.60 8,600 8 10.89 575 11...... 23.27 6,640 4 ...... 25.00 17,100 12m-. 10.54 523 24.47 13,800 7 25.64 21,300 10.14 467 8 24.77 15,600 12 25.91 23,000 12..... 9.77 415 B120 FLOODS OF 1957

83. TRINITY RIVER NEAR OAKWOOD, TEX. Location. Lat 31°38'50", long 95°47'20", on left bank at downstream side of bridge on U.S. Highways 79 and 84, 1J£ miles upstream from International- Great Northern Railroad bridge, 6 miles northeast of Oakwood, Leon County, and at mile 313. Drainage area. 12,912 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 175.03 ft above mean sea level datum of 1929, supplementary adjustment of 1942. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 91,800 cfs 9 p.m. Apr. 28 (gage height, 48.87ft). 1923 to March 1957: Discharge, 153,000 cfs Apr. 29, 1942 (gage height, 51.64ft). Maximum stage known since at least 1905, 52.2 ft June 4, 1908; information from U.S. Weather Bureau (discharge, about 164,000 cfs). Remarks. Some regulation by reservoirs above Dallas and by Lavon Reservoir on East Fork Trinity River.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 2,190 80,700 40,600 11 -- 3,430 32, 300 38,800 21 4,750 35,000 20,900 2 2,440 80,300 47, 800 12_.-_. 1,560 31, 800 35, 500 22 11,100 32,300 19,700 3...... 4,900 78,500 56,400 13.-.. 913 28.400 34, 000 23 15, 300 30,200 18, 700 4...... 7,470 72,500 63,600 14.-... 693 26, 600 31, 600 24 25,700 28, 600 17,400 5 9,700 66,900 66,400 15 601 25, 400 29, 800 25 59, 200 27, 100 16,000 6 10,900 63, 200 65, 000 16 595 25, 100 28, 200 26___._ 73, 200 26,800 14, 700 7 12,000 56,800 61,200 17-____ 527 26, 500 26,700 27. 87,700 32,900 13, 500 8...... 12, 000 48,100 56,700 18--.._ 469 34, 300 25, 400 28_____ 90, 600 41, 000 12,500 9 10, 800 41, 600 51, 100 19___- 441 38,700 24, 100 29_--._ 87, 300 41, 000 11.800 10 6,910 36, 400 44,400 20..... 457 37,800 22, 600 30 83,000 39,200 11,300 31 38,300

Monthly mean discharge in cubic feet per second 20, 890 42 070 33,550 Runoff, in thousands of apre-feet 1,243 2,587 1,996

84. TRINITY RIVER NEAR MIDWAY, TEX. Location. Lat 31°04'40", long 95°42'00", near center of channel and on up­ stream side of bridge on State Highway 21, 5 miles northeast of Midway, Madi­ son County, 8.5 miles downstream from Boggy Creek, and at mile 230. Drainage area. 14,484 sq mi. Gage-height record. Wire-weight gage read twice daily. Datum of gage is 117.63 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Backwater from Bedias Creek Apr. 24-28. Maxima. April-June 1957: Discharge, 103,000 cfs 2-8 p.m. May 1 (gage height, 47.55 ft). 1939 to March 1957: Discharge, 146,000 cfs May 1, 1942 (gage height, 48.58 ft). Maximum stage known since at least 1866 and before construction of levees in 1916, about 45.0 ft in May 1890 (discharge not determined); information from local residents. Flood in 1866 reached a stage of about 44.0 ft. Flood of June 9, 1908, reached a stage of 44.3 ft, according to floodmarks and to information from local residents. Flood of May 27, 1930, was greatest flood during period TEXAS AND ADJACENT STATES B121

1916-38 and reached a stage of 46.7 ft according to floodmark (flow confined within levees). Remarks. Some regulation by reservoirs above Dallas and by Lavon Reservoir on East Fork Trinity River.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 4,560 102, 000 36, 600 11 8,650 51, 400 52, 800 21.---. 1,230 35, 200 36, 900 3,580 100, 000 39,300 12 5, 570 48, 200 51, 600 3,480 35, 100 34, 300 3 3,080 96, 500 41, 600 13 2,720 46, 000 50, 500 23 9,700 36, 100 31, 400 4.... 4,660 93, 000 43 200 14 1,690 44, 400 47,600 24__ 23, 300 37, 000 28, 900 5 6,480 87, 500 45, 300 15 1,240 43, 300 45, 400 27, 100 37, 400 26, 200 6 8,050 81, 000 48, 400 16 2,020 42, 700 43, 800 26 28, 400 37, 100 23, 600 r 9,300 75. 000 53, 300 17 1,240 41,500 42,600 30,000 36, 000 20,600 8 _ 10, 200 68,100 57, 400 18 1,120 40, 200 41, 500 28 " 39,000 34, 500 17,700 9 10, 600 61, 800 58, 000 19 ._ 960 38,400 40, 300 29- 67, 400 33, 000 14, 900 10 10, 200 57, 100 55, 400 20 888 36,500 38, 900 q-i30-___- 94, 400 32, 700 12,700

Monthly mean discharge in cubic feet per 14,030 52, 990 39, 360 Runoff, in thousands of a 834.7 3,258 2,342

85. TRINITY RIVER AT ROMAYOR, TEX. Location. Lat 30°25'30", long 94051'05", near right bank on downstream side of pier of bridge on State Highway 105, 1.9 miles south of Romayor, Liberty County, 2.0 miles downstream from Gulf, Colorado and Santa Fe Railway bridge, 4.1 miles downstream from Big Creek, and at mile 94. Drainage area. 17,192 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 35.92 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 93,000 cfs 1 a.m. to 11 p.m. May 10 (gage height, 32.20 ft). 1924 to March 1957: Discharge, 111,000 cfs May 9, 1942 (gage height, 35.8 ft, from floodmarks). Maximum stage known since at least 1908, that of May 9, 1942. Remarks. Some regulation by reservoirs above Dallas and by Lavon Reservoir on East Fork Trinity River.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

!-_____ 7,100 59,000 35, 100 11 11,300 91, 400 49,100 21 2,590 52, 400 53, 400 8,920 59, 700 35, 600 12 - 11,200 89, 100 51, 900 22- 2,450 48, 200 51, 100 3 _ 8,970 61, 000 38, 500 13 9,870 85, 600 54, 100 23 2,290 43,800 47, 200 4 7,280 63, 800 41, 200 14 7,230 81, 200 56, 000 24 8,340 41, 000 43, 700 5 ... _ 6,320 68, 400 42, 600 15 __ 4,460 76, 700 57, 200 25__ 24, 900 39, 000 40, 200 6 -. 6,180 74,800 43, 400 16 3,140 71, 000 58, 700 26 . 36, 000 37, 800 36, 400 7 - 7,100 80,900 43, 700 17 6,260 66, 000 59, 000 27 41, 100 37, 300 32, 500 8_ ___ 8,420 86,800 43,900 18. . 9,600 62, 500 58, 900 28 46, 000 36, 800 28, 800 9 _ 9,700 91, 500 44,700 19 6,040 59, 800 57, 200 29 52, 100 36, 400 25, 400 10....-- 10, 700 93,000 46, 700 20 3, 620 56, 200 55,900 30 .. 56,600 35, 800 21,400 31 35, 100

Monthly mean discharge in cubic feet per 14, 190 62, 000 45, 120 Runoff, in thousands of a 844.5 3,812 2,685

656087 O 62- B122 FLOODS OF 1957

86. TRINITY RIVER AT LIBERTY, TEX. Location. Lat 30°03'25", long 94°49'05", near center of channel on upstream side of bridge on U.S. Highway 90, in Liberty, Liberty County, 450 ft down­ stream from Texas and New Orleans Railroad bridgej and at mile 40. Drainage area. 17,539 sq mi. Gage-height record. Wire-weight gage readings made once daily by U.S. Weather Bureau. Datum of gage is 2.22 ft below mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments above 10-foot stage. Maxima. April-June 1957: Discharge, 88,100 cfs 4 p.m. May 12 (gage height, 29.26ft). 1938 to March 1957: Discharge, 114,000 cfs May 12, 1942 (gage height, 29.38ft). Maximum stage known since at least 1903, that of May 12, 1942. Remarks. Some regulation by reservoirs above Dallas, and by Lavon Reservoir on East Fork Trinity River. Discharge not computed below a gage height of 10 ft, owing to effect of tides.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 .. 9,300 55, 100 39,200 10, 700 86, 600 46, 900 21_____ 4,360 56, 600 53,500 o 8,000 57, 100 38, 400 12 11,400 87,700 47, 500 22 54, 400 53,300 3 9,220 57, 100 38,000 11,100 86,200 48, 500 23 51, 600 51, 600 4...... 9,300 58, 100 38,800 14 9,980 83,900 49, 500 24___- 49, 700 50,100 5 8,150 59,400 40,900 15 7,700 79, 800 50, 500 25 9,600 47, 300 48,300 6 7,070 61,400 43,400 16..... 5,420 73, 500 51,400 26 22, 000 45,800 46, 700 7 6,840 64,200 44, 900 17 4,270 67,000 52,100 27 27, 900 43, 900 44, 800 8 7,450 68, 500 45, 600 18 7,060 63,300 52,100 28 33, 800 42, 300 41,200 9. ... 8,500 74,500 45,600 9,000 60,900 52, 300 29 45, 300 41, 600 36,800 10 9,580 80, 500 46,200 20.. 6,520 58,600 53, 300 30 50,500 40, 800 32.000 31 40, 000

Monthly mean discharge in cubic feet per .>6cond 61, 210 46, 110 Runoff, in thousands of acre-feet 3,763 2,744

SAN JACINTO RIVER BASIN 87. EAST FORK SAN JACINTO RIVER NEAR CLEVELAND, TEX. Location. Lat 30°20', long 95°07', near left bank at downstream side of pile bent of bridge on State Highway 105, 1,880 ft downstream from Gulf, Colorado and Santa Fe Railway bridge, 1^ miles west of Cleveland, Liberty County, and 4.3 miles downstream from Winters Creek. Drainage area. 330 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 107.98 ft above mean sea level datum of 1929, supplementary adjustment of 1936. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 4,080 cfs 8-10 p.m. Apr. 30 (gage height, 14.62ft). 1939 to March 1957: Discharge, 59,000 cfs Nov. 24, 1940 (gage height, 24 ft), from rating curve extended above 27,000 cfs by logarithmic plotting. Maximum stage known since at least 1900, that of Nov. 24, 1940. Flood of May 5, 1935, reached a stage about equal to that of Nov. 24, 1940; information from local residents (discharge, 53,500 cfs, from rating curve mentioned above). TEXAS AND ADJACENT STATES B123

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 195 3,480 23 11 39 73 56 21 60 177 41 2 160 2,810 190 12 41 63 46 22- 49 78 27 3 167 2,130 391 13 36 54 38 23 44 53 30 4 147 1,480 637 14 32 50 33 24 40 43 64 5 100 811 1,040 15 30 44 30 25 38 34 38 6______85 874 1,080 16 70 41 26 26 350 32 53 7 78 630 333 17_____ 222 38 26 27 664 33 60 8 56 161 166 18 173 38 23 28__._- 810 58 38 9- 44 100 109 19 123 183 24 29 1,420 43 27 10______38 86 73 20 81 592 41 30 3,060 30 21 01

Monthly mean d ischarge, in cubic feet per 282 463 160 Runoff, in acre-ft et 16, 760 28, 460 9.500 Runoff, in inches 0.95 1.62 0.54

88. LAKE HOUSTON NEAR SHELDON, TEX. Location. Lat 29°54'55", long 95°08'30", at intake structure on San Jacinto River near right bank, 100 ft upstream from Lake Houston Dam, 4.0 miles north of Sheldon, Harris County, 4.6 miles upstream from bridge on U.S. Highway 90, and 18 miles northeast of Houston. Upper gage, lat 30°01'35", long 95°15'30", at bridge on LT.S. Highway 59, about half a mile downstream from Spring Creek, 2} 2 miles north of Humble, and 16 miles upstream from dam. Drainage area. 2,811 sq mi at dam; 1,811 sq mi at upper gage. Gage-height record. Water-stage recorder graph. Datum of gage at dam is 0.70 ft below mean sea level datum of 1929, adjusted in 1957 for subsidence of ground surface. Datum of upper gage is 30.53 ft above mean sea level, datum of 1929. Maxima. April-June 1957: Contents, 184,800 acre-ft May 1, 2 (gage height, 46.5 ft). Gage height at upper gage, 16.73 ft May 2. 1954 to March 1957: Contents, 179,200 acre-ft Feb. 8, 1955 (gage height, 46.1 ft). Gage height at upper gage, 16.3 ft Feb. 8, 1955. Remarks. Lake is formed by compacted earth-fill embankment sections, 4,000 and 4,600 ft long. Spillway is a slab-and-buttress (Ambursen type) structure, 3,160 ft long, located near center of dam. Dam completed and storage began Apr. 9, 1954. Total capacity, 158,200 acre-ft at top of spillway (elevation, 44.5 ft). Usable capacity, about 150,000 acre-ft between elevations 44.5 and 22.0 ft at bottom of 36-inch sluice gate. Water used for municipal supply for city of Houston, for industries in ship-channel area, and for irrigation. B124 FLOODS OF 1957

Gage height, in feet, and contents, in acre-feet, at 12 p.m. of indicated day, 1957

April May June Day Gage Contents Gage Contents Gage Contents height height height

\...... 44.9 163, 200 46.5 184, 800 45.2 167, 200 2..... _ . _ ...... 45.0 164, 500 46.3 182, 000 45.2 167,200 3...... 44.9 163, 200 46.0 177, 800 45.1 165,800 4...... 44.9 163, 000 45.6 172, 500 45.0 164, 500 5...... 44.8 162,000 45.3 168, 500 45.1 165, 800 6...... 44.8 162,000 45.2 167, 200 45.1 165, 800 7 . 44.8 162,000 45.0 164, 500 45.1 165, 800 8...... 44.6 159, 500 45.0 164, 500 45.0 164, 500 9...... 44.6 159, 500 45.2 167, 200 44.9 163, 200 10...... -...... 44.7 160, 800 45.2 167, 200 44.9 163,200 11...... 44.7 160, 800 45.2 167, 200 44.8 162, 200 12...... 44.7 160, 800 45.2 167, 200 44.8 162, 200 13.. .. 44.6 159, 500 45.3 168, 500 44.7 160, 800 14...... 44.5 158, 200 45.3 168, 500 44.7 160, 800 15 . 44.6 159, 500 45.3 168, 500 44.7 160, 800 16 . 44.6 159, 500 45.3 168, 500 44.6 159, 500 17.....-...... 44.6 159, 500 45.3 168, 500 44.6 159, 500 18...... 44.7 160, 800 45.2 167, 200 44.6 159, 500 19 . 44.7 160, 800 45.2 167, 200 44.6 159, 500 20.... .-.-...... 44.7 160, 800 45.2 167, 200 44.6 159, 500 21 44.7 160, 800 45.2 167, 200 44.6 159, 500 22 44.6 159, 500 45.3 168, 500 44.7 160,800 23 44.7 160, 800 45.3 168, 500 44.7 160, 800 24 44.6 159, 500 45.3 168, 500 44.7 160,800 25 44.7 160,800 45.3 168, 500 44.7 160, 800 26...... 44.9 163,200 45.3 168, 500 44.8 162,000 27 45.4 169, 800 45.3 168, 500 44.6 159, 500 28...... 45.9 176, 500 45.4 169, 800 44.7 160, 800 29...... 46.0 177, 800 45.4 169, 800 44.8 162, 000 30 46.3 182,000 45-4 169, 800 44.7 160, 800 31 45.3 168, 500 +21, 200 -13, 500 -7, 700

BRAZOS RIVER BASIN 89. BRAZOS RIVER AT SEYMOUR, TEX. Location. Lat 33°34', long 99°16', near left bank on downstream side of pier of bridge on U.S. Highways 277 and 283, three-quarters of a mile upstream from Wichita Valley Railway bridge, 1 mile southwest of courthouse in Seymour, Baylor County, and at mile 832. Drainage area. Approximately 14,490 sq mi of which 9,240 sq mi is probably noncontributing. Gage-height record. -Water-stage recorder graph except Apr. 1, 2, June 25, 29. Datum of gage is 1,240.97 ft above mean sea level datum of 1929, supple­ mentary adjustment of 1942. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Discharge for periods with no record of gage height estimated on basis of records of weather and records for nearby stations. Maxima. April-June 1957: Discharge, 28,000 cfs 7 p.m. May 19 (gage height, 10.10ft). 1923 to March 1957: Discharge, 95,400 cfs Oct. 16, 1926 (gage height, 15.16 ft, from floodmarks), from rating curve extended above 48,000 cfs on basis of slope-area measurement of peak flow; gage height, 21.00 ft Sept. 28, 1955. Maximum stage known, that of Sept. 28, 1955. A flood in about 1906 reached about the same stage. TEXAS AND ADJACENT STATES B125

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

I...... 7 5,590 10, 400 11 12 2,830 795 21. . 288 2,940 2,220 2 6 2,720 13, 400 12..... 6.4 8,990 671 22 680 1,800 1,380 3 8.0 1,660 11, 000 13 4.5 14, 800 803 23 750 1,690 904 4 11 1,700 6,730 14 4.0 6,490 1,950 24 866 1,680 1,350 5 24 1,260 4,790 15 4.5 2,520 1,390 25 762 3,810 850 6..- . 49 714 3,520 16. . 3.-0 1,590 990 26 1,130 4,570 581 7 30 571 2,390 17 2.2 1,050 662 27 2,800 1,880 565 8 36 441 1,760 18 1.5 8,370 488 28 4,710 1,140 496 9.----.. 28 2,870 1,360 19 1.0 22, 000 5,900 29 . 9,720 750 350 10...... 18 3,990 1,060 20 1.0 7,280 4,770 30 11, 700 509 263 31- 2,580

Monthly mean d ischarge, in cubic feet per 1,122 3,896 2,793 Runoff, in acre-fBet 66, 770 239, 600 166, 200

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 20 April 29 May 11 12p.m.. _ ._ 0.21 3.4 5.05 6,730 12m- 2.50 1,700 6.20 10, 300 3.44 3,210 April £1 12- 7.07 13,400 9 ... 4.12 4,650 12 4.92 6,650 .29 9.0 6 ... . 1.03 238 May 12 9 _ 1.38 7.56 1.15 303 4.77 6,210 12 1 40 466 5.63 8,390 g 8,240 5.10 6,970 May 1 6 . 6.75 12, 300 12 8.60 20, 000 1.74 7cn 12m... 1.60 628 3.80 3,720 May 13 12 1.87 867 May 2 8.90 21,500 9 ...... 6.95 12,400 12m- 3.16 2,540 7.42 13,600 1.93 12 6.58 10,900 1.70 12 1.52 557 May 14 2.34 1,370 12m...... 4.81 5,850 12 2.55 1,630 3.67 3,360 10a.m...... 1.40 466 11 1.65 662 May 15 12m_. . ... 2 08 1,060 2.30 1,320 2.57 1,660 12m.. .. 3.08 2,380 12 2.07 1,050 6 . . 2.44 1,490 12p.m...... 2.80 1,980 g 2.69 2.69 1,830 May 17 9 2.52 1,590 12m 1.68 688 12 2.56 1,640 2.47 1, 520 1.58 604 12 1.72 723 Mays May 18 April 26 1.24 At)Z. 3.78 3,680 10... __ .... 5.48 7,940 1.51 CJ.Q 5.27 7,340 9 3.58 6 .... 6.53 11,500 12 4.38 1.53 646 12 7.60 15, 500 ' 6 ...... 2.00 1,080 April 27 8 . . 2.38 1,540 May 19 10...... 2.85 2,200 3.51 3,160 3.88 4,100 12m.- ... 9.40 24, 200 2.77 1,940 7 . 3.52 3,360 10.10 28,000 12 2.48 12 5.30 12 7.48 15,000 April 28 May 10 May 20 2.35 1,380 4 00 4 00 4,360 5.58 8,240 4 --. 5.28 7,360 3.16 2,710 4.50 5,320 12. ____ . ... 6.60 11. 700 12 2.80 2.320 12 2.94 4,010 B126 FLOODS OF 1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957- Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May HI June 1 June 6 6 on 3.57 3,270 3.07 9 300 9 9,640 3.88 3,880 12...... 2.94 2,180 8,870 12 . 3.50 3,140 9...... 5.80 9,320 May 24 12 ...... 6.25 10,800 June 7 2.73 3.20 2,600 12 m...... 2.98 2,250 May 25 6.97 13, 100 2.90 2,120 10...... 6.51 2.85 2,050 3.25 2,690 7.85 16,600 11 __ ...... 2.90 2,120 12...... 6.90 12,800 4,250 4.47 1.36 412 12...... 5 10 7,080 6.31 10,700 May 26 6...... 6.33 10,800 9 . 6.20 10, 300 9a.m._ . 1.64 620 4.58 5,390 6.71 12, 100 10 4.25 4,670 7- 6.90 12, 800 12... __..____. 3.37 2,640 19 8,900 12----.-...... 5.40 7,700 May $7 June 4 June 80 12m...... 2.81 1,740 5.35 7,560 4.42 5,130 12 p.m...... 2.53 1,380 7 ...... - 5.31 7,450 3.85 3,820 4.73 5,900 12.----- _ -. 3.42 3,000 May 30 12...... 4.41 5,100 June 21 1 49 439 2.90 2,120 May 31 4.35 4,960 12 p.m...... 2.57 1,660 1.67 596 e...... 4.69 5,790 7 ...... 5.00 6,920 4.31 4 860 12...... 6.55 12,600 3.80 3,720

90. FORT PHANTOM HILL RESERVOIR NEAR NUQENT, TEX. Location. Lat 32°37', long 99°40', at outlet gate tower near right bank, 120 ft upstream from dam on Elm Creek, 4 miles upstream from Clear Fork Brazos River, and 5 miles south of Nugent, Jones County. Drainage area. 478 sq mi. Gage-height record. Staff gage read once daily. Datum of gage is 1,580.00 ft above mean sea level. Maxima. April-June 1957: Contents observed, 89,910 acre-ft May 25 (gage height, 58.7 ft). 1940 to March 1957: Contents observed, 80,900 acre-ft Oct. 17, 1941 (gage height, 56.8 ft). Remarks. Reservoir is formed by rock-faced earth-fill dam. Dam completed and storage began in October 1938. Capacity, 74,310 acre-ft at crest of spill­ way (gage height, 55.1 ft). Sill of lowest outlet gate is at gage height 1.6 ft. Dead storage is negligible. Water is used for municipal supply for city of Abilene. Figures represent total contents. An undetermined amount of flood flow is diverted by gravity ditch from Deadman Creek into the reservoir. During each year water is pumped into the reservoir from Clear Fork Brazos River. The city of Abilene diverts water from reservoir for municipal use. Since October 1955, figures of content and capacity have been adjusted for sedimenta­ tion on basis of sedimentation survey made by the [U.S.] Soil Conservation Service between July 1, 1953, and Oct. 2, 1953. Cooperation. Gage-heighl record and record of diversions furnished by city of Abilene. TEXAS AND ADJACENT STATES B127

Gage height, in feet, and contents, in acre-feet, at 8 a.m. of indicated day, 1957

Al)ril May June Day Gage Gage Gage height Contents height Contents height Contents

1.. 47.1 46,450 56.8 81, 440 56.6 80,580 2...... 47.1 46,450 ec 9 7O OOA Kfi A 7Q 7^O 3 . _ ._...._.______47.0 46, 160 56.1 78, 450 56.3 79, 300 4...... 47.0 46, 160 56.0 56.4 79, 730 5...... 47.0 46 160 56.3 7o ^nn 56.4 79, 730 6...... 47.0 46 160 CC 0 70 con 56.3 79, 300 7...... 47.0 46, 160 56.0 78, 020 56.1 78,450 8 - ...... 47.0 46,160 56.0 78,020 9...... 47.0 46,160 56.5 55.8 77, 200 10...... 47.0 46,160 57.2 83, 180 55.8 77, 200 11...... 46.9 45, 870 56.9 81,860 55.7 76, 780 12...... 46.9 45; 870 58.1 87, 170 55.7 76, 780 13- . . .__.___..._.._... 46.9 45, 870 86, 710 55.7 76, 780 14 ._ ..__. . 46.8 45,590 57.5 84, 500 55.6 76, 370 15 ...... 46.8 45,590 57.4 84,060 55.6 76, 370 16 ...... 46.8 45, 590 56.3 79,300 55.6 76, 370 17 _ .______46.8 45, 590 56.1 78,450 55.5 75, 960 18-_._...... 46.8 45, 590 56.9 81, 860 55.6 76, 370 19 _ . ._-. 46.7 45, 310 57.2 83, 180 55.6 76, 370 20...... 46.7 45, 310 56.7 81,010 55.6 76, 370 21.. ._...... _...... 46.7 45, 310 56.2 78, 880 55.5 75, 960 22...... 46.7 45, 310 56.1 78, 450 55.5 75,960 23...... 46.9 45, 870 56.0 78,020 55.4 75,550 24.... ___ . . _ .... 47.0 46, 160 57.1 82, 730 55.4 75,550 25... ___ . _ . . ___ . ... 47.0 46,160 58.7 89, 910 55.4 76,550 26...... 53.4 67, 630 58.5 89,000 55.3 75, 140 27...... 57.2 83, 180 57,2 83,180 55.3 75, 140 28. . __ ..... _ . 57.2 83, 180 56.4 79, 730 55.3 75, 140 29...... -..._._...... 57.0 82, 290 56.2 78, 880 55.3 75, 140 30...... 56.9 81, 860 56.0 78, 020 55.2 74, 720 31...... 56.0 78,020 -3, 840 -3, 330

91. CLEAR FORK BRAZOS RIVER AT NUGENT, TEX. Location. Lat 32°41', long 99°40', on right bank 33 ft downstream from pier of county road bridge in Nugent, Jones County, and 4 miles upstream from Deadman Creek. Drainage area. 2,220 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 1,531.91 ft above mean sea level (levels by Brazos River Authority). Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 19, 500 cfs 9:30 a.m. May 26 (gage height, 24.17ft). 1924 to March 1957: Discharge, 47,000 cfs Sept. 8, 1932 (gage height, 27.05 ft at site 575 ft downstream). Maximum stage known, about 30.0 ft in 1876. Floods in 1900 and May 1923 reached stages of about 24 and 24.5 ft, respectively; information from local residents. Remarks. Some regulation by reservoirs upstream from station having a com­ bined capacity of about 114,700 acre-ft. There was flow over the spillway at Fort Phantom Hill Reservoir Apr. 26 to June 30. B128 FLOODS OF 1957

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 . .... 2.2 4,760 3,920 11.. 1.8 3,400 448 21 139 2,380 213 2...... 2.4 4,710 5,060 12 1.6 10, 800 505 22 261 886 180 3 10 1,550 7,310 13 1.8 11,800 614 23 58 1,150 155 4...... 50 1,090 10,800 14 1.8 8,900 473 24..... 128 4,050 118 5...... 17 1,410 4,660 15 1.8 4,060 375 25 881 10,800 114 6.-.-... 9.0 670 1,810 16..... 2.0 1,480 291 26...- 7,760 18, 800 133 7...... 4.7 403 1,050 17 2.2 854 221 27 7,300 15,700 116 8 3.7 291 748 18. . 2.7 4,310 208 28 7,950 8,710 110 9 2.4 1,490 601 19 2.2 7,850 210 29 5,810 1,760 104 10 2.0 3,850 514 20 1.1 5,570 381 30 4,360 795 96 31 1,220

Monthly mean d ischarge, in cubic feet per s 1,159 4,694 1,385 Runoff, in acre-fe et 68, 960 288,600 82,390

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April m May 11 May 22 12 p.m...... 2.40 84 10.32 3,400 4.95 879 6,580 12m-- . 4.71 791 April 25 12p.m.. 4.23 627 May 12 2.02 30 May 23 1.92 21 12 m._ ___-_.. 20.15 11, 700 5 2.50 102 13,000 4.07 576 6.------5.00 762 12 21.06 12, 900 11 5.00 898 7 12m...... 5.88 1,250 8 9.00 2,430 May 13 6.35 1,460 10 12.30 4,340 12 8.40 2,460 12 . 14.50 5,830 2p.m_...... 20.25 11,800 May 24. April 26 May 14 12m. 11.56 4,420 17.22 7,930 12m.. 17.54 8,900 12 p.m. ______12.25 4,900 17.25 7,960 T...... 18.04 8,570 May 25 12 ... . 17.55 8,180 3,690 15.15 7,090 April 27 7.52 2,000 12m___._____ 18.88 10,600 21.65 14,300 15.75 7,080 May 16 12 23.50 17,800 11 15.22 6,680 6p.m______._ 16.00 7,300 12m____._.__ 6.47 1,520 May 26 12-.-.--... 16.92 4.94 875 24.04 19,200 April 28 May 17 9:30-- - 24.17 19,500 23.88 18,700 17.38 4.28 643 12 23.42 17, 600 16.58 7,780 9 5.60 1,130 12 15.68 12 6.94 1,730 May 27 May 8 May 18 12m- . 22.42 15,600 21.48 14, 100 12p.m...... 3.27 262 12m 11.15 4,140 12p.m...... 15.32 7,220 May 28 May 9 May 19 19.60 11,400 2a.m. 4.00 462 12m.. . 16.95 8,640 6. .. 4.18 514 16.07 7,850 13.70 5,980 10 8,190 12 10.25 3,560 7.52 7,850 12. 10.55 3,550 12 15.50 7,370 May 29 May 10 May 20 13.15 5,570 8.07 2,200 11.80 12m.. 6.70 1,540 11.09 4,000 5.57 1,050 12 - 9.00 2,670 12m.. 8.27 2,380 12 5.26 924 TEXAS AND ADJACENT STATES B129

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957- Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May 30 June 1 Con. June 5 Con. 12m. ....____ 4.92 798 11.35 4,220 12p.m______18.20 9,800 12p.m__ _ 4.52 660 12------. 12.05 4,700 June 4 May 31 JuneZ 10 a.m._,-.__ 20.60 12,700 12m__ 5.20 902 12m--. 11.90 4, 590 18. 55 10, 200 6.75 1,570 14.30 6,360 12 16.05 7,840 12_____ .... 8.75 2, 570 June 3 June 5 June 1 14.85 6,840 12.22 4,820 10.75 3,810 15.90 7,710 8.60 2,490

92. LAKE STAMFORD NEAR HASKELL,, TEX. Location. Lat 33°05', long 99°35', on left bank at intake structure of West Texas Utilities Co. steam powerplant at Lake Stamford on Paint Creek, 1 mile upstream from dam, 1.7 miles upstream from California Creek, and 10 miles southeast of Haskell, Haskell County, Tex. Drainage area. 360 sq mi. Gage-height record. Staff gage reading made once daily. Datum of gage is 2.77 ft above mean sea level, datum of 1929 (levels by Freese and Nichols). Maxima. April-June 1957: Contents, 54,500 acre-ft June 5-13 (gage height, 1,412.9 ft). 1953 to March 1957: Contents, 41,500 acre-ft June 8-11, 1954 (gage height, 1,410.0ft). Remarks. Lake i$ formed by rock-faced earth-fill dam. Dam completed in March 1953. Storage began in June 1953. Capacity, 60,000 acre-ft at crest of spillway (gage height, 1,414.0 ft). Dead storage, 430 acre-ft at invert of 29-inch discharge conduit (gage height, 1,380.0 ft). Figures represent total contents and are computed from daily gage readings at 8 a.m. Water is used as municipal supply for the city of Stamford. Gage-height record furnished by West Texas Utilities Co. powerplant 1 mile upstream from dam. Capacity table computed from data furnished by Freese and Nichols, con­ sulting engineers, Fort Worth. Data for diversions for municipal use furn­ ished by city of Stamford. B130 FLOODS OF 1957

Gage height, in feet, and contents, in acre-feet, at 8 a.m. of indicated day, 1957

A.>ril May June Day Gage Contents Gage Contents Gage Contents height height height

1. ._-_ --_--- _ _--_--___._ 1, 402. 1 17, 720 1, 403. 6 21, 140 1,411.9 49, 550 2___ __-__-______1, 402. 1 17, 720 1, 403. 6 21, 140 1,412.3 51, 500 3___-. _ - ______1, 402. 1 17, 720 1, 403. 7 21, 380 1,412.6 53,000 4. ______1, 402. 1 17,720 1, 403. 8 21, 620 1,412.8 54, 000 5. ______-______1, 402. 1 17, 720 1, 403. 8 21,620 1, 412. 9 54, 500 6____ _-__. ______.__-___ 1, 402. 1 17, 720 1,403.9 21, 860 1,412.9 54,500 7______.______1, 402. 1 17, 720 21, 860 1, 412. 9 54, 500 8... ______... __ 1, 402. 1 17,720 1, 403. 9 21,860 1, 412. 9 54,500 9____.______.. ____ 1,402.0 17, 500 1, 404. 4 23, 140 1, 412. 9 54, 500 10 ______1,402.0 17,500 1,405.0 24, 700 1, 412. 9 54,500 ll___-______- 1,402.0 17, 500 1, 405. 9 27, 220 1,412.9 54,500 12 ______1, 402. 0 17,500 1, 406. 9 30,200 1, 412. 9 54, 500 13__-_-______-______.___-_ 1,402.0 17,500 1, 407. 7 32, 950 1,412.9 54, 500 14-__ _-___-______._ 1,402.0 17,500 1,408.0 34, 000 1, 412. 8 54,000 15 ______._ 1, 402. 0 17,500 1, 408. 1 34,350 1, 412. 8 54,000 16 _. -__- _-_ _ 1, 402. 0 17,500 1, 408. 2 34, 700 1, 412. 8 54,000 17 ______1,402.0 17,500 1, 408. 2 34, 700 1, 412. 8 54,000 18 ______1,402.0 17,500 1, 408. 5 35, 750 1, 412. 6 53, 000 19 -__ ___-___-___.______1,402.0 37,500 1,409.0 37, 500 1, 412. 6 53,000 20.. ______1,401.9 17,300 1, 409. 5 39,500 1, 412. 6 53,000 21 _.__ __ .... ______... 1, 401. 9 17, 300 1, 409. 6 39, 900 1,412.6 53,000 22 ______.__-______1,401.9 17, 300 1, 409. 6 39, 900 1, 412. 5 52,500 23_____-___--___-__-______.___ 1, 401. 9 17, 300 1, 409. 6 39, 900 1, 412. 5 52,500 24 ______1, 401. 9 17,300 1, 409. 8 40, 700 1, 412. 5 52,500 25 ______1, 401. 9 1, 410. 3 42,700 1, 412. 5 52,500 26 ______1, 402. 2 17,940 1, 410. 8 44, 700 1,412.4 52, 000 27 ______-__._ 1, 402. 6 18, 820 1,411.1 45,950 1, 412. 4 52, 000 28 ______1, 402. 7 19, 040 1,411.2 46,400 1, 412. 4 52,000 29 _-__-____--______-_-_ 1, 402. 9 19, 480 1,411.2 46, 400 1, 412. 3 51,500 30 ______1,403.3 20,420 1,411.2 46,400 1,412.3 51,500 31.. ______1,411.4 47, 300 +2,700 +26, 880 +4, 200

93. CLEAR FORK BRAZOS RIVER AT FORT GRIFFIN, TEX. Location. Lat 32°56', long 99°13', on right bank just downstream from pier of bridge on old Fort Griffin-Throckmorton road, half a mile northeast of Fort Griffin, Shackelford County, 5,100 ft upstream from bridge on U.S. Highway 283, and 1.3 miles upstream from Mill Creek. Drainage area. 3,974 sq mi. Gage-height record. Water-stage recorder graph except May 15 to June 10, for which graph was drawn on basis of staff-gage readings made at least once daily. Datum of gage is 1,174.09 ft above mean sea level, datum of 1929, Fort Worth supplementary adjustment of 1942. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 30,300 cfs 7 p.m. Apr. 28 (gage height, 33.76ft). 1923 to March 1957: Discharge, 33,600 cfs Sept. 10, 1932 (gage height, 35.09 ft). Maximum stage known, about 38.0 ft in 1900; information from local resi­ dents. Remarks. Some regulation by reservoirs (total combined capacity, 177,800 acre-ft) as follows: Elm Creek basin (combined capacity, 98,230 acre-ft); Sweetwater Creek basin (combined capacity, 16,450 acre-ft); Lake Penick (capacity, 3,100 acre-ft); and Lake Stamford (capacity, 60,000 acre-ft). Flow TEXAS AND ADJACENT STATES B131

over spillway of Fort Phantom Hill reservoir Apr. 26 to June 30. Lake Stam­ ford was almost filled, but no flow over spillway occurred April to June 1957.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1. .-. 15 10,800 4,710 11 15 5,470 818 21.... _ 4.7 8,630 346 2...... 12 6,200 6,990 12 _ .. 12 7,300 705 22..... 4.4 4,490 339 3...... 12 6,050 7,990 13 9.5 9,380 854 23... ._ 137 1,570 226 4...... 11 5,440 8,790 14 7.7 12, 300 1,210 24..... 912 3,430 198 5...... 8.2 3,300 9,940 15..... 6.5 14, 200 731 25.... 1,900 8,410 179 6...... 6.5 2,470 10, 300 16 5.8 9,600 492 26..... 10,600 11,500 154 7... 5.8 1,400 4,680 17 5.4 2,890 386 27- 16,700 17, 200 139 8...... 4.7 921 2,150 18 _ .. 5.1 4,250 314 28..... 27,300 19,800 148 9 ... 21 2,080 1,480 19 4.7 7,820 272 29..... 19, 300 18, 200 134 10 . 18 2,710 1,090 20..... 4.7 8,080 272 30 .. 15,900 7,970 126 31 .. 2,820

Monthly mean d ischarge, in cubic feet per s 3,098 7,312 2,205 Kunoff, in acre-feet 184, 400 449, 600 131, 200

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April %% April 88 May 9 Con. 12p.m. ._ __ 1.88 5.1 32.82 24,400 7.15 2,040 8...... 33.50 28,600 12 m__. ______8.42 2,490 April 83 11 33.32 27,500 9.28 2,780 33.76 30, 300 12____. ______8.28 2,440 1.98 9.0 12 ...... 33.28 27, 100 3.. . .. 2.33 38 5 ...... 2.63 83 April 29 8 . .. 2.70 S5 7.48 2,150 10 3.14 196 32.25 21,200 12m. __.___.. 8.74 2,590 2.83 121 12m...... 30.92 18, 100 10.32 3,110 7...... 2.62 81 29.72 16, 300 12__ _..___.__ 11.58 3,540 9.-. .. 3.46 287 12 29.72 16, 200 12...... 3.76 383 May 11 April 30 April #4 14.57 4,680 30.00 16, 600 12m. . 15.50 5,050 3.25 226 12m__. ______29.77 16,300 19.26 6,840 2 4.10 524 29.34 15,600 12.. _____.__.- 19.81 7,120 3 . .. 8.85 2,480 12 . 28.33 14,200 4 9.29 2,650 May 1% 6.. .__. 8.95 2,520 8. 7.25 1,910 12m.. 19.83 7,120 10 4.75 790 12 m__. ______24.80 10, 500 12 p.m... 21.10 7,830 12...... 3.77 386 12p.m___.__ _ 21.00 7,840 May 13 j4pric #5 May % 23.40 9,360 12m...... 137 18.80 6,660 23.89 9,700 2 p.m.. .. _ . 3.27 232 12m...... 17.12 5,820 12... .. _____.. 24.63 10, 300 7.. .. 3.80 396 16.57 5,570 8...... 1,130 12. 5,700 9.. ..___._.... 21.70 8,060 10 ... . 26.00 11, 400 May 3 12m___..__._ 26.74 12, 200 ll _ 27.77 13, 300 12p.m._____.. 28.60 14,400 12 27.27 17.48 5,980 n QQ 6 94n April %6 5.. _____...... 17.83 6,160 8_ . _____ 18.04 6,260 29.00 14, 800 24.50 10, 100 12 5,790 2p.m .._._.__ 28.75 14,400 12m...... 19.20 6,680 12... . 27.45 12,800 97 ft4 19 ^nn May 4 12.- ..--. 15.64 May 16 11_ ...... 18.59 6,540 Slltrtt */ 15.05 5,150 12m...... 24.30 9,920 17.20 5,760 12m______29.80 15, 200 6 p.m___ May 17 12...... ___... 32.47 22. 700 4 a.m... 4.52 940 8 a.m.. _ ... 11.00 3,280 B132 FLOODS OF 1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957- Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May 17 Con. May %lf Con. May 31 Con. 12m. ._____._ 7.70 2,170 15.05 4,720 9.00 2,510 12 p.m...... __ 6.08 1, 550 12 20.40 7,200 June 1 May 18 May 25 12 m__ ...... 15.45 4,830 12 m__...... 12.80 3,920 12m...... 8,420 19.45 6,680 12 p.m.. ______20.90 7,610 12p.m...... 24.24 9,590 June % May 19 May SB 19.92 6,910 12 m...... 21.30 7 Q4O 12m...... 25.90 10, 900 20,10 7,000 12p.m__..__. 21.52 7 Q70 29.25 14,500 12-...----.. 21.00 7,460 May SO May 27 June 3 12 m_...... 21.70 8,070 12m...... 31.55 17,800 12m... 22.00 8,050 12 p.m_.__ _ _ 21.92 8,200 12p.m...... 32.05 18,600 22.55 8,390 May 81 May 28 June 4 10 a.m______22.53 12m. _ ..... 32.48 19, 800 12m.. 23.10 8,760 7p.m_. _._._. 23.60 9,350 9p.m...... 32.78 20,900 12p.m...... 23.78 9,240 12_.__...... 7,630 12 32.77 20,800 June 6 May 88 May 29 12m_-_ ... 24.55 9,770 12m...... 13.75 4 OKfl 12m.. __ ... 32.20 19,200 12p.m...... 26.00 11,000 1,840 28.25 13, 400 June 6 May S3 May SO 24.70 9,990 26.50 11,400 6.02 1 Iftft 12m...... 20.90 7,440 24.75 9,900 6.04 1,480 17.35 5,680 12 . 21.00 7,390 12 13.67 4,140 May 24 May 31 June 7 6.60 1,720 10.05 2,870 12m.... _ .. 14.50 4,380 12m ___ ... 10.15 9 o^n 12m...... 9.10 2,550 12p.m...... 9.35 2,570

91. HUBBARD CREEK NEAR BRECKENRIDGE, TEX. Location. Lat 32°50'15", long 98°57'00", near right bank on downstream side of pier of bridge on U.S. Highway 183, 2.3 miles downstream from Big Sandy Creek, 6.8 miles northwest of Breckenridge, Stephens County, 7 miles upstream from Gonzales Creek, and 8 miles upstream from mouth. Drainage area. 1,087 sq mi. Gage-height record. Water-stage recorder graph except May 21, 22, 29-31, June 8-12, 15-17, 25, for which graphs were drawn on basis of wire-weight gage readings. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 34,500 cfs 3 a.m. May 26 (gage height, 34.00ft). 1955 to March 1957: Discharge, 12,800 cfs May 20, 1955 (gage height, 30.98 ft). Maximum stage known since at least 1925, 34.2 ft July 20, 1953; information from local resident and State Highway Department. Remarks. Some regulation by reservoirs upstream from station. TEXAS AND ADJACENT STATES B133

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 0.4 3,200 2,270 0.8 4,560 80 21...... 131 257 57 2 .2 709 1,360 12 .5 15,200 79 22 54 160 40 3... 32 1,320 720 13 .4 7,540 2,630 23...... 1,140 2,790 31 4 27 7,360 963 .2 6,570 666 24...... 473 8,220 52 5 - 11 6,330 2,350 15 .2 706 192 25 291 11, 500 58 6 . 11 498 1,890 16...... 2 350 99 26. 16, 800 19, 900 29 7 8.9 184 547 17 .1 251 62 27.. 17,000 1,700 22 8- . 3.4 100 266 18...... 1 5,000 599 28 11, 400 509 18 9. 1.4 2,910 218 19 .2 4,160 1,050 29...... 11, 700 343 14 10.. . 1.0 7,920 122 20 .3 534 122 30 2,950 172 12 383

Monthly mean d ischarge, in cubic feet per second. 2,068 3,914 554 Runoff, in acre-fc et 123, 100 240,700 32, 940

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April gg April g8 Con. May 5 Con. 12p.m...... 4.40 51 26.78 4,860 12 m... ------27.87 5,380 9 30.05 8,190 19.95 1,840 April 23 13, 800 19 12.24 871 32.46 15,300 2a.m ___ ... 4.85 96 12 32.52 15, 700 May 6 3 ..... 5.75 4...... 7.40 512 9.10 430 6 9.60 COQ 7.78 9.---.....-... 12.00 1,200 16,400 12m...... 14.17 1,580 32.15 14, 100 May 7 15.13 1,780 30.38 6.--.---...... 14.33 1,620 8 ...... 27.65 6,98 173 9 12.65 1,310 12.- - 24.60 6.54 129 12 11.50 1,120 April SO May 8 April 24 94 fW 6.19 97 8.50 6 ...... 3,470 5.93 77 12m. 6.47 350 12m- 3,010 5.73 223 20.60 2 dlO 12 5.39 168 19 6.71 146 April 25 May 1 S...... 10.35 645 16.94 1,950 12 m 4.85 96 4,050 23.70 4,070 4.62 11 23.60 4,840 8- -- __ 27.17 6,150 9 6.00 269 3,220 12 29.46 8,940 10 10.25 926 8 ___ .__ 15.12 1,740 11 15.50 1,870 12 1,060 May 10 12 20.25 3,260 31.73 14, 200 April 26 27.38 4,940 9.47 797 8 ------21.90 2,140 6,380 7.34 12 15.42 1,250 4 9,080 12 8.38 672 6...... 29.80 11,200 May 11 10 31.00 13, 600 32.55 18, 400 13.26 1,000 6 _ 33.85 34, 100 11.45 1,140 9...... 18.50 1,630 10 33.00 18, 900 11 11.34 1,160 12m-- 23.40 2,580 12 32.00 13, 600 12.93 1,540 29.45 7,180 12 - 16.75 12 32.12 13,600 April S7 May 4 May lg 31.80 12, 800 5 32. 48 15,300 23.70 5,350 32.83 16, 700 11 33.52 23,900 9fi Q9 7,920 32.97 17, 400 32.60 15, 800 28.47 9,430 32.46 14,900 12- 30.88 9,870 12 - 11, 100 12 ------30.90 9,730 April 28 May 5 May 13 3 a.m .... 28.77 6.510 6 a.m __ .... 30.40 12, 100 4 a.m ...... 29.20 6,990 B134 FLOODS OF 1957

Gage height, infect, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May 13 Con. May 84 Con. June 5

9 a.m... __ 28.74 99 on 758 10 3,730 12...... 9.25 462 12 11.06 24.85 4,620 6 23.15 3,830 May 18 9 ...... 2,700 16.50 1 ' 860 2 a.m ____ - 12.90 10.13 6 ...... 19.65 446 12m--. 25.25 4,850 28.45 7,480 10.95 753 12 9 7OH 12m. 9.32 473 12 m...... 349 6p.m. ... 8.57 362 May 19 7.56 12 8.00 288 9 son May 30 6. - - ... 29.10 12m ...... 24.62 6.62 137 7.00 175 i 7on 12 ... 6 no 168 6.53 128 8- ...... - 14.60 1,160 12 11.65 793 May HO 7.80 264 12m--. 6.18 96 352 12 p.m.- ..... 5.92 76 12m...- .- 500 10.05 CQ1 12 p.m...... 8.43 343 19 June 17 May HI 5.69 61 5.53 52 12m . 7.66 947 2,770 12p.m ...... 7.15 190 8 ...... 21.76 3,270 June 18 19.00 2,400 May SS 6 .... 15.50 1,660 6 a.m __ - 5.45 47 12 ...... 1,160 12m... 8.77 404 12m. __ . 6.87 162 10.50 708 6.50 19<; 5 ----- 9.08 451 8 13.55 1,380 May 23 1,140 17.57 2,180 15.60 1,680 6.18 96 12.. . 11 12.85 1,130 2,160 18.13 2,310 3-.. __ . __ 23.40 8 14.30 1,500 6 26.60 5,720 607 12m. 10.58 740 12 28.78 7,910 m on 652 8.03 317 1 9 10.83 731 7.16 201 May m June 4 June 20 30.16 596 12m W...... 11.72 6.27 108 29.75 7,580 862 5.84 71 8 ..... 4,240 13.63 10 . 24.10 2.840 12 15.56 1,670 TEXAS AND ADJACENT STATES B135

95. BRAZOS RIVER NEAR SOUTH BEND, TEX. Location. Lat 33°01'30", long 98°38'50", near left bank on left side of pier of bridge on State Highway 67, 0.3 mile upstream from Wichita Falls and Southern Railroad bridge, 1.6 miles downstream from Clear Fork Brazos River, 2.0 miles northeast of South Bend, Young County, and at mile 758. Drainage area. Approximately 21,600 sq mi, of which 9,240 sq mi is probably noncontributing. Gage-height record. Water-stage recorder graph except Apr. 1-20, June 10-13, 17, 18, 23-25, 28-30, for which graphs were drawn on basis of wire-weight gage readings made once daily. Datum of gage is 1,002.98 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation denned by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 66,000 cfs 10 p.m. Apr. 29 (gage height, 32.70ft). 1938 to March 1957: Discharge, 87,400 cfs May 4, 1941 (gage height, 27.35ft). Maximum stage known, 36.2 ft in 1876, information from State Highway Department and U.S. Army Corps of Engineers. Flood of Sept. 24, 1900 reached a stage of about 29.5 ft and flood of June 16, 1930 reached a stage of about 35.5 ft; information from local residents.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 71 53, 400 16, 700 11 24 17,100 2,360 21 760 15, 800 3,840 2 _. 67 35, 100 15, 700 12 22 22, 700 1,940 22_____ 626 11, 400 2,150 3...... 63 24,800 17, 700 13 26 32,300 2,050 23 2,100 12, 700 1,800 4 ... 210 23, 100 15,600 14 31 35, 700 4,030 24 3,350 14.40C 1,470 5 ... 117 27,000 16,000 15 31 24,000 2,990 25 2,070 26, 500 1,130 6. 71 18, 300 15,000 16 27 17,200 2,130 26 18, 400 32, 400 1,460 7 46 5,640 14,800 IT- 24 16,400 1,600 2827 " 36, 900 35, 900 1,040 8 . 32 2,860 12,200 IS 22 27,700 1,190 46,200 24, 800 791 9 29 4,470 5,150 19 26 32,600 2,150 29.____ 61, 800 18,300 702 10__.___ 24 16,300 3,270 20 23 27,700 7,390 30 64, 100 19, 100 670 31 19,600

Monthly mean discharge, in cubic feet per 7,910 22, 430 5,833 Runoff, in thousands of acre-fee' 470.7 1,379 347.1

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Oage Discharge Hour Gage Discharge height height height

April SO April S3 Con. April 26 Con. 12p.m...... 3.38 oq 7 97 2,120 13.00 12, 200 8 44 3,540 14.91 17,200 April 21 12 . .. 8.97 4,310 17.25 23, 500 20.35 32, 200 12m...... 5.92 988 6.20 1,180 April S7 12-.-...... _. 5.87 956 12m - 8.48 3,590 - 7.80 2,700 10 a.m...... 22.00 37,000 23.16 40, 200 12m...... __ 5.28 610 April 25 April SS 12p.m...... 4.69 330 12m...... 6.57 1,470 23. 55 41, 200 7.60 2,480 27.65 51, 600 April SS 12 . - 8.75 3,970 12 29.50 56, 500 5.16 April gfi April 29 9... -_.____._ 6.02 1,050 2a.m.....-- 11. 55 8.980 12m.-. 31.35 62,000 B136 FLOODS OF 1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Qage Discharge Hour Qage Discharge Hour Qage Discharge height height height

April 29 Con. May 19 June 2 10 p.m...... 32.70 66,000 12m.. . 20.73 33, 200 14.07 15,000 12...... 32.65 65, 800 on iq 01 Ann 10 1 ^ QO U Kfin 14.51 16, 100 April SO May 20 12------14.92 17,200 6 a.m ...... 32.50 65, 400 19 15 OQ con 12m...... 32.20 16.60 21, 700 6p.m...... 31.80 63, 300 15.50 12 31.00 fin onn May 21 6 15.20 17 900 12m 13.97 14, 700 12 14.36 15, 700 Mayl 12p.m...... 12.88 11 900 June 4 12m...... OQ CE 54,200 May 22 12p.m...... 24.75 12m. 12 64 n oflfl 14.23 15, 500 12.53 11,100 10 - 16, 200 13.90 14,700 6 a.m ___ ... 22.82 qo 7nn 12 14.42 1 R nnn 12m...... 21.43 34, 300 12 22 6p.m...... 20.35 1 H Qfl 14, 300 12...... 19.45 28, 300 6 ...... 14.25 15, 400 12 ..-.-... 14 ' 400 3 a.m ...... 14.85 17,100 14.07 15,200 12p.m...... 7.41 2,110 May 24 12 14.18 15,500 May 9 5 a.m ...... 13.62 13,800 12m... .. 13.95 14,700 June 12 12m __ .... 8.70 3,760 13.75 14, 200 6p.m...... 9.83 5,610 10 1 °. fi°. 1,750 12 ...... 11.57 9,020 12 ...... 14.80 ifi onn May 10 May 15 June 13 8 a.m __ .... 14.18 15, 300 16.68 91 Qfift 6.20 1,750 4p.m._ ...... 15.72 19, 300 8 ...... 1 Q flfl 25 600 9 7.00 2,940 6...... 15.83 1Q 1 E OQ onn 12 7 SO 4,200 9...... 15.75 19, 400 IQ QC 29 400 12 15.45 18, 600 6- ...... 19.55 OQ QOO 12 . . 19.37 29, 400 May 11 8.53 5, 290 6 a.m ...... 17, 400 May 26 7 52 3p.m ...... 14.52 16,200 12m... 20.33 32, 100 12- 2.180 12 .. 14.91 17 9OO 21.65 QC nnn June 15 May 13 May 27 6a.m...... 15.72 in onn 21.98 of; onn 2,340 12m.-.- 17.02 99 HO. 1 p.m.-...... 7.50 3,620 6p.m...... 18.10 OF: Qnn 6 ... 91 c.0. OK con 3,420 12 18.81 12 20.43 12 7.04 2,930 May 13 May 28 June 16 6 a.m ...... 19.25 29, 100 6p.m ...... 21.50 35,500 16.35 91 nnn 6.56 2,200 12--. .- . 22.00 37,000 12 15.64 19 ' 100 12m-. 6.49 2,040 12 p.m.__ _ _ May 29 6.25 1,800 June 17 4 a.m ...... 22.15 37, 400 15.33 18, 300 9 ..... 22.15 37, 400 12m.-...--- 6.04 1,610 12m.....---. 22.08 15.30 12 p.m.---- . 5.79 1,400 6p.m...... 21.24 34, 700 19 15.42 18,500 12 _ . __ . on onn 1,230 15.67 19, 100 12m__- - 5.57 1,160 12m...... 17.33 15.85 19, 600 12 p.m--.---- 5.47 1,090 18,800 May 16 15.93 19,800 12m-. 6.52 2,070 12m ___ ... 14.75 16, 800 15.87 19 700 7.10 3,060 12p.m...... 14.56 19 15.60 19,000 12. 6.78 2,680 May 17 June 1 June 20 12m..... _ . 14.63 16, 400 15.35 18,300 6 a.m 9.80 7,480 14.48 16,000 6 - - 14.95 17,300 12 m. ---.... 11.40 10, 100 12 14.98 17, 300 9 14.30 15, 600 6 p.m.-- _ -. 10.13 7,940 13.10 12 500 12- -... 8.60 5,400 May 18 14.60 16,400 18.04 25, 700 15.07 17,600 12m... 19.36 9 15.18 17,900 12m-- 7.48 3,590 12p.m...... 20.45 32, 500 14.88 17,100 12 p.m. .... 6.88 2,800 TEXAS AND ADJACENT STATES B137

96. POSSUM KINGDOM RESERVOIR NEAR GRAFORD, TEX. Location. Lat 32°52', long 98°26', in powerhouse at dam on Brazos River, 2.6 miles upstream from Loving Creek, 11.3 miles southwest of Graford, Palo Pinto County, and at mile 687. Drainage area. Approximately, 22,550 sq mi, of which 9,240 sq mi is probably noncontributing. Gage-height record. Mercury U-tube gage read twice daily. Datum of gage is 0.10 ft above mean sea level, datum of 1929 (levels by Brazos River Authority). Maxima. April-June 1957: Contents observed, 741,800 acre-ft 12 m. Apr. 30 (gage height, 1,000.9 ft). 1941 to March 1957: Contents observed, 743,900 acre-ft Oct. 5, 1941 (gage height, 1,001.0 ft). Remarks. Reservoir is formed by a reinforced-concrete dam of flat-slab-deck, massive-buttress type; and nine roof-weir (modified beartrap-type) gates, two bulkhead sections, and an earthen dike section. Dam completed and storage began Mar. 21, 1941. Total capacity, 724,700 acre-ft at top of closed roof- weir gates (gage height, 1,000.0 ft). Usable capacity for power development, 698,900 acre-ft between gage heights 911.5 ft at sill of powerhouse penstock and 1,000.0 ft. Figures represent total contents. Water used for power development, industry, and irrigation. Record furnished by Brazos River Authority.

Gage height, in feet, and contents, in acre-feet, at 12 p.m. of indicated day, 1957

April May June Day Gage Contents Gage Contents Gage Contents height height height

I 990.2 551, 200 1, 000. 5 734,200 997.6 679, 800 2 990.2 551, 200 999.7 719, 000 997.4 676, 200 3 990.2 551, 200 999.7 719, 000 997.4 676, 200 4 - _ _ 990.2 551, 200 999.0 705, 700 997.7 681,600 990.2 551, 200 998.8 702, 000 997.9 685, 200 6 .... ______990.2 551, 200 998. 5 696, 400 997.7 681, 600 T...... 990. 2 551,200 998.1 688, 900 997.6 679, 800 8 990^2 551, 200 998.2 690, 700 998.0 687, 000 9 990.2 551,200 998.6 698, 200 997.6 679, 800 10... ______990.1 549, 600 999.1 707, 600 997.1 670, 800 ll__-___-.__ 990.1 549, 600 999.6 717, 100 997.0 669, 000 12 990.1 549, 600 999.2 709, 500 997.1 670, 800 13 990.0 548, 000 999.5 715, 200 997.1 670, 800 14 990.0 548, 000 999.9 722, 800 997.3 674, 400 IS 990.0 548, 000 999.0 705, 700 997.4 676, 200 16.______990.0 548, 000 997.4 676,200 997.5 678, 000 17 ... ~ 990.0 548, 000 998.0 687, 000 997.4 676, 200 18_-_-______990.0 548, 000 998.4 694, 500 997.4 676, 200 19 990.0 548, 000 998.8 702, 000 997.3 674, 400 20. ______990.0 548, 000 998.1 688, 900 997.6 679, 800 21 990.1 549, 600 997.6 679, 800 997.9 685, 200 990.3 552, 800 997.6 679, 800 998.0 687, 000 23. ______990.6 557, 600 998.6 698, 200 998.1 688, 900 24... ______991.2 567, 200 998.1 688, 900 997.9 685, 200 25 991.5 572, 000 1, 000. 5 734, 200 997.7 681,600 26 . _____ 998.0 687, 000 1,000.3 730, 400 997.6 679, 800 998.6 698, 200 1,000.3 730, 400 997.4 676, 200 28.__-_____-_-_.-__. ______999.9 722, 800 999.8 720, 900 997.2 672, 600 29 1, 000. 8 739, 900 998.2 690, 700 997.0 669, 000 30. 1,000.8 739, 900 998.1 688,900 996.8 665, 400 31 997.8 683, 400 +188, 700 56, 500 -18,000

656087 O 62- -10 B138 FLOODS OF 1957

97. BRAZOS RIVER NEAR PALO PINTO, TEX. Location. Lat 32°51'45", long 98°18'10", on right bank, 35 ft upstream from bridge on Palo Pinto-Graford highway, 300 ft downstream from Dark Valley Creek, 6}£ miles north of Palo Pinto, Palo Pinto County, 20 miles downstream from Possum Kingdom Dam, and at mile 667. Drainage area. Approximately, 22,760 sq mi of which 9,240 sq mi is probably noncontributing. Gage-height record. Water-stage recorder graph except 10 p.m. Apr. 28 to 2 p.m. Apr. 29, 8 p.m. May 28 to 2 a.m. May 30, and 5 p.m. June 7 to 10 a.m. June 13. Graphs were drawn on basis of a few gage readings, high-water marks, and record of releases at Possum Kingdom Dam, Apr. 28, 29, May 28, 30, June 7. Datum of gage is 831.23 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Discharge for periods with no record of gage height estimated on basis of record of releases from Possum Kingdom Reservoir. Maxima. April-June 1957: Discharge, 85,400 cfs 6 a.m. Apr. 29 (gage height, 28.87ft). 1924 to March 1957: Discharge, 95,600 cfs June 16, 1930, at site 19 miles downstream near Mineral Wells (gage height, 30 ft). Maximum stage known was reached by flood of 1876, according to data by U.S. Army Corps of Engineers, and was several feet higher than any subsequent flood. Remarks. Flow largely regulated by Possum Kingdom Reservoir and several smaller reservoirs in Clear Fork and other basins, having a combined capacity of about 946,500 acre-ft.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June i 36 71,000 20,200 11 410 19, 700 3,140 21 559 29,200 3,250 2 51 56, 400 19,600 12 193 27,300 2,960 22 101 12,100 2,360 3 .-. 323 57,200 19, 100 13 - 89 35,300 2,780 23 529 14,100 3,010 4...... 484 43,000 19,100 14 49 35, 600 2,580 24 266 21,100 3,140 5 .... 76 34,100 20,200 15 35 39, 600 2,960 25 511 37, 500 3,140 6...... 40 28,500 20,300 16 32 34,600 2,960 26 11, 300 39, 900 3,160 7...... 33 15,700 17, 500 17 33 16,400 3,030 27 38, 700 38, 500 3,160 8... . 31 4,550 12, 200 18 33 25,600 3,050 28 52, 300 37, 800 3,160 9...... 400 4,220 11, 400 19 40 33,800 3,050 29 81,700 33,700 3,140 10...... 481 7,570 7,010 20 105 40, 500 3,030 30 77,500 21, 300 3,140 31 20,600

Monthly mean discharge in cubic feet per 8,881 30, 210 7,560 Runoff, in thousands of acre-feet 528.5 1,857 449.9 TEXAS AND ADJACENT STATES B139

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height leight height

May 14 April %4 May I Con. 2 a.m.- 16.02 35, 000 12 p.m....- - 1.19 111 6p.m ..... 24.25 66, 000 OQ no 64, 700 12m-. - .... 16.22 35, 600 23.75 64,000 4 p. m- -- . 16.32 April &5 12-..-- -- 16.39 36, 200 May % 1.13 100 May 15 12m-. - 1.06 88 8p.m.-- --. .91 65 } a.m -- 23.15 11. .-. - 22.80 60,200 4 a.m.... . 16t 46 36,500 9------.94 70 11 16.46 36, 500 10 3.70 1,540 12m-- 22.42 58, 700 21.26 54, 000 12m 16.85 37, 800 11 4,760 3 p.m... -- 42, 900 12 __ 7.04 8,100 4 20.50 51,000 19.85 48, 400 5_ ------18.62 44, 000 7 - 18.65 44. 100 April &6 11-- - 19.51 47,100 >_ ---- i o 20.06 49, 200 7 - 18.64 44, 000 18.28 42, 800 U nnn 12 8.34 11,500 May 3 3 - 8.04 10,700 2 a.m ... . 24.00 65, 000 5-- - - 6.34 6,420 9 a.m..-. -- 17.31 39, 400 8 - 5.06 3,620 3 - 25.01 69, GOO- 4 _ ------25.12 69, 500 10 17.10 38, 600 12m-- 3.87 1,740 16.08 35, 200 3.50 1,310 6------24.08 65, 300 12 m. ------2 p.m..- 00 QC 14.72 30, 600 4.60 , (OU 7 ----- 3 ----- 61,600 6 - 14.15 28, 700 4 6.60 7,040 8 23.78 10 23.44 58, 200 9-. - 13.86 27, 800 5. ------8.80 12, 700 12.38 23, 100 6 ------9.60 15,000 12m. ------22.63 55, 000 12 26, 300 3 p.m... -- 21.50 50, 100 10 14.75 30, 700 6 - 20.98 51,800 May 17 12 15.28 32,500 8 - 21.18 53,700 20.77 11.34 6- - - 11.06 19, 200 April 07 7 11.00 19, 000 May 9 10 - 10.97 18. 900 1 a.m __ .-.- 15.41 32, 900 12m. ------10.10 16, 400 4 - 16.57 36,800 12p.m..- 5.22 3,940 5 p.m.- ...... 8.57 12, 100 17 04 9------8.57 12, 100 9 17.41 39, 700 9.40 14, 400 12m-.- 17.50 40,000 May 10 12- - 17.51 40,100 5.17 3,840 5.13 3,760 April 28 4,020 3 a.m...... 11.55 12.16 22,500 7 a.m _ 17.65 ' 40, 600 1 p.m.--. 6.33 6,390 5 3 8.14 10,900 8 12. 34 23, 000 9 18. 20 42,500 12. 32 23, 000 10 44,100 4 ----- 8.50 11, 900 10 8.78 12, 700 12m 12.93 24, 800 12m--- 21.50 48,600 6 28, 400 54,000 12 8.90 13,000 2 p.m...... 14.07 2p.m_.- 23.25 4 ...... 14.59 30. 100 3 - - - 23.84 55,600 14.74 30, 600 5.-. 24.12 56, 700 May 11 6 6 24.25 63,200 12 7 - 24.44 66,000 1 a.m .> - 8.92 13,100 67,600 4 ----- 10.16 16. 500 May 10 12 27.40 78,800 5 ------10.37 2 ill __ --- 9. 58 31 500 10.00 16, 100 15.19 32, 100 12.56 23, 700 4p.m-_- .... 15.34 32. 700 33, 400 83,800 7 ------13.55 26 800 5 15.55 2 a.m 28.50 17.10 38, 600 4 - 28.82 85, 200 9 ----- 13.74 27, 400 8 ----- 12 13. 53 10 6 28.87 85,400 41, 200 8 28,79 85,100 12 17.82 28.65 84,400 May 12 28.40 83,300 79,700 4 a.m.- . .... 13.14 4 p.m... 27.61 17.90 41, 400 6_. _ ------27.32 78,400 8 12.86 24, 600 3 a.m.-.- . 12 m. ------12.77 24, 300 6 17.85 41, 300 10 27.08 77,400 40, 800 12----. -- 27.20 77,900 2 p.m.- ..... 12.72 24, 200 12m. ------17.70 ^...... 13.42 26, 300 12 p.m...... 17.21 39, OOC 6 - .... - 14.79 30, 800 8 15.38 32, 80( May 21 10 - 15.58 33, 50( 78, 100 12 15.62 33, 600 10 a.m.. ..-- 16.69 2 a.m 27.24 10.40 12 m. - 27.15 77,700 33, 90C 6p.m- 27.04 77,200 May IS 12m-- - 15.70 76, 400 4 p.m.- ... 12.18 22, 50( 5 a.m...... 15.51 33, 200 6 11.37 7. - 15.82 34, 300 10 9.04 13, 40( 8.62 12, 20( Q 16.51 36, 600 12 75,600 11 16.74 37.400 10 26.39 74,600 12m... 16.73 37, 400 May 22 OK QC 16.20 35, 601 72, 400 12, 10C 3 D.m _ . 24.80 68,200 12 16.02 35, 000 2 a.m--...... 8.55 B140 FLOODS OF 1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May 28 Con. May 25 May 27 12ffl_ ...... 8.54 12, 100 6 a.m ...... 17.02 12p.m...... 8.50 11,900 14.36 29,400 12m______. 17.02 38, 400 6...... 12 p.m.__ .... 17.10 38,600 May 23 7...... 14.42 29,600 9 16.28 35, 800 May $8 10 a.m _ . .... 8.45 11,800 12m...... 18.48 43, 500 6 a.m ...... 12m__-______8.92 13, 100 1 p.m_._ ..... 19.10 45,700 7 ...... 17.03 38, 400 2p.m__- __ 10.20 16, 700 3...... 19.44 46,900 12m...... 17.04 38, 400 10.80 18, 400 8...... _-. 18.27 16. 93 oo, 1UU 12 9.31 14,200 10...... 17.81 41, 100 4 p.m..- ..... 16.81 37, 700 12..-...... 17.81 41, 100 12 ...... 16.40 36, 300 May 29 May 24 15.91 34, 600 2a.m...... 10.58 17,700 15.75 34,000 4...... 11.59 20, 800 17.76 41,000 15.62 33,600 6...... 11.96 21,900 40,300 8...... 15.42 32,900 8.--.---.. _ . 12.05 22,200 17.47 39,9TO 10 15.00 31,500 12m.. . 12.04 22, 100 17.20 39,000 11 _. - .- 13.27 25, 900 11.72 21 ' 200 12 12- 12.97 24, 900

98. PALO PINTO CREEK NEAR SANTO, TEX. Location. Lat 32°38', long 98° 11', on left bank 0.5 mile upstream from Texas and Pacific Railway bridge, 1.4 miles downstream from Big Sunday Creek, 2.6 miles northeast of Santo, Palo Pinto County, 2.8 miles upstream from Wusser Creek, and 7.0 miles upstream from mouth. Drainage area. 567 sq mi. Gage-height record. Water-stage recorder graph except May 15-17, 20, 21, 26, 27, May 31 to June 2, June 5, 7-10, 12-30, for which graphs were drawn for all periods given above, except June 12-30, on basis of characteristic reces­ sions, floodmarks, and information by observer. Datum of gage is 762.63 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments below 17,000 cfs and by slope-area measurement of peak discharge. Maxima. April-June 1957: Discharge, 45,100 cfs 6 a.m. May 26 (gage height, 31.05 ft, from floodmark). 1951 to March 1957: Discharge, 17,600 cfs May 1, 1956 (gage height, 26.08 ft). Maximum stages since at least 1880, May 8, 1922, and May 26, 1957. Flood of May 8, 1922, reached about the same stage as that in 1957, according to information furnished by the Texas and Pacific Railway Co., but probably was slightly lower according to information furnished by local residents. TEXAS AND ADJACENT STATES B141

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 . 0.8 326 305 11 0 1,740 65 21 572 119 40 .9 347 370 12 0 6,450 60 22 132 89 35 3 11 4,370 216 13 0 4,700 60 23 1,770 3,430 30 4...... 15 3,050 403 14 0 954 60 24 401 6,120 30 2.2 690 208 15 0 269 55 25 81 14,800 25 6...... 5 292 144 16 0 148 50 26 . 1,050 21, 100 20 7t .1 161 117 17 0 107 45 27 5,530 1,460 15 8 0 150 91 18 0 4,080 45 28 . 1,720 698 15 9 0 2,370 82 19 1.6 628 45 29 8,150 320 10 10.... ._ 0 846 73 20 .6 191 40 30 . 1,590 229 7 31 212

Monthly mean d ischarge, in cubic feet per 701 2, 595 92.0 Runoff, in acre-f=et 41, 710 159, 600 5,480

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April M April 28 May 3 Con. 12 p.m...... 1.85 58 2.65 342 7.40 2,980 8 ...... 2.86 458 8 8.69 3,620 April S3 11. _ . ... 2.66 348 10 10.43 4,500 12m..-..- 2.90 480 11 _ . 13.52 6,040 3 a.m _ . _ . 2.20 144 3.05 562 12m...... 14.66 6.610 6...... 2.62 326 2. __ ... 3.58 854 16.01 7,410 9 ...... 3.85 1,010 3...... 3 7,490 12m._ _ 5.30 1,880 6. . . 8.00 3,280 4 ... _ 15.85 7,310 3 p.m...... 7.60 3,080 10...... 11.76 5,160 6 ...... 14.80 6,680 6...... 8.54 3,550 12.. 9 12.00 5,280 9...... 8.00 3,280 12 9.79 4,180 12...... 5.15 1 790 May 4 April ^4 13.40 5,980 4 ... _ ... 15.40 7,040 9.70 4,130 2 a.m ___ _- 3.65 892 6...... 18.25 8,780 5 ...... 10.61 4,580 6 ...... 2.82 436 12 m...... 20.77 10, 700 7 10.77 4,660 12 m...... 2.46 247 20.90 10,800 9 10.51 4,540 12 p.m... . 2.14 126 2 30.87 10,800 12m 8.40 3,480 3 . . 20.61 10, 500 5.60 2,060 April 25 6 ...... 17.90 8,540 5 4.53 1,420 9 13.40 5,980 7 ...... 4.29 1,270 12m...... 1.94 75 12 .. 8.75 3 660 10 4.49 1,390 12 p.m...... 1.80 48 11 4 49 1,390 April 30 12. - - _ . 4.41 1,350 April 26 7.04 2.800 4 a.m ______2.00 88 8 ...... 8 1.84 56 12m...... 5.00 1,700 3.45 782 9_ 2.31 183 3.48 799 12m...... 3.13 606 10 __.. 2.92 491 8_--.-- - o 04 491 11 3.05 5fi2 12 2.74 OQ9 12 2.77 408 2.52 275 6 ... .. 3.15 May 1 7 3.75 950 8._ ------5.25 1,850 305 2.50 265 9 . 8.80 3,680 2.50 OAK 10 ...... _ 11.50 5,030 on^ May 9 11. 12.55 12 464 12 14.28 2.49 260 6 ..... 2.21 148 April 27 8...... 2.50 265 2.78 414 9 --- 3.90 1,040 1 a.m __ _ .... 13.71 6,140 12m...... 2.63 332 6.10 2,330 2 .... 17.10 8,060 2.56 295 8.85 3,700 4 18.07 12 999 10.75 4,660 8 16.90 7,940 8 ...... 11.32 4,940 11 16.28 7,570 Mays 9 11.26 4,910 12m...... -- 15.75 7,250 12. .... 9.31 3,940 12.10 5,330 2.41 224 6 7.25 2,900 2 . _ .. 2.44 238 Mail 10 8... 865 9 ... . 3.65 892 4...... 3.57 848 7.50 3,030 12..... _ .... 3.03 552 5. -_.-.-..-_.. 4.09 1.150 3 ..... 5.23 1,840 B142 FLOODS OF 1957

Gaffe height, in feet,-and discharge, in cubic feet per second, at indicated time, 1957- Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May 10 Con. May 14 Con. May 84 Con. 5 a.m...... 3.90 1,040 2.72 381 20.60 10, 500 7 __ 3.30 700 5 - 20.81 10, 700 12m...... 2.91 AQR Mayir 20.82 10, 700. 6 p.m...... 2.66 7 .. 20.81 10, 700 12 - 2.52 275 2.13 123 8 - _- 20.51 10,500 9._ . _ ----- 19.68 9,780 May 11 11 16.60 7,760 12m... __ . 3.25 672 2 a.m___ ,.._. 2.49 260 2.82 436 4 2.51 97fl 810 5 ..... 3.00 535 4.35 1,310 6 - 3.67 6 8.00 3,280 3.90 1,040 11 5.05 1,730 9 ...... 11.05 6 4.42 1,350 1 p.m...... 5.47 1,980 11. 13.30 5,930 7 - 5.10 1,760 2 . . 5.51 2,010 14.16 6,360 8 - 8.50 3,530 4... . ___ . 5.49 1,990 2 --...- 14.00 6,280 9 ... - 11.70 5,130 6 ___ .... . 5.18 1,810 6 12.25 10 - 14.70 6,630 7 ...... 5. 19 1,810 8 . 11.40 4,980 11 18.20 8,740 8 . 5.50 2,000 10 8.10 3,330 12m...... 21.20 11,100 9... ___ ----- 7.55 3,060 12 5.90 2,230 22.90 12,900 10 9.50 4,030 26.00 17,600 12-. --..... 12.88 5,720 27.50 21,500 5. 28.70 26,200 May 18 3.93 1,060 8 - 30.0 34,000 3.32 711 9_ 30.5 38,800 2 a.m___ ..... 14.65 6,600 3.01 540 12 29.5 30,400 4. .... 16.49 12m... 2.88 469 6.- _ ------17.40 8,240 2.61 320 17.34 8,200 12- _ . OKfi 8 17.05 8 AQA on c 10 15.72 7,230 31.05 45, 100 12m.... 12.90 5,730 8 30.5 38,800 9.80 4,180 1.95 78 10 29.4 29, 800 3 9.23 3,900 12m... 26.5 18,600 4...... 9.78 4,170 A//VM/ 01? 22.0 11,900 6--.--_.-. . 10.86 4,710 17.0 8,000 8 13.48 6,020 1.91 69 6 - 13.3 5,930 10 14.39 6,480 1.95 78 8 - 9.6 4,080 11 14.59 6,580 10 1.95 78 9. . 7.7 3,130 12. 14.57 6,560 12m... 2.10 114 10 7.1 2,830 5.50 2,000 12 6.2 2,380 May 13 2 ...... 7.50 3,030 3 9.50 4,030 6a.m ...... 13.18 5,870 4 11.40 4,980 May W 12m.. . 11.37 4,960 13.40 5.980 6p.m...... 8.60 3,580 15.40 7,040 5.2 1,820 12-...... 5.80 2,180 8 19.00 9,300 8 4.7 1,520 10 20.75 10, 700 12m.... 4.45 1,370 May 14 11...... 20.80 10, 700 12 p.m.,. .... 3.80 980 12 20.70 10, 600 4.33 1 QflA 12m...... 3.37 739 May 84 12 m...... 3.20 645 2.93 10,500 2.98 524

99. ROCK CREEK NEAR MINERAL, WELLS, TEX. [Miscellaneous site] Location. Lat 32°48'50", long 98°02'30", at Lake Mineral Wells dam on Rock Creek in Parker County about three-quarters of a mile upstream from bridge on U.S. Highway 180, and 4 miles east of Mineral Wells, Palo Pinto County. Drainage area. 74.4 sq mi. Maximum. April-June 1957: Discharge, 6,440 cfs May 23 or 25, 1957. Remarks. According to information furnished by local resident, there were 3 days, Apr. 25, May 23, and May 25, 1957, on which similar peak flows occurred. The lake level was 9 ft below crest of spillway before the April flood, and the lake was full before the May floods. Shortly after the present dam was com­ pleted in 1940, the flow over the spillway was as great or greater than that of the floods of April and May 1957. TEXAS AND ADJACENT STATES BUS

100. BRAZOS RIVER NEAR GLEN ROSE, TEX. Location. Lat 32°15'40", long 97°41'50", on left bank 2 miles upstream from Paluxy Creek, 2.4 miles downstream from bridge on U.S. Highway 67, 4 miles northeast of Glen Rose, Somervell County, and at mile 509. Supplementary water-stage recorder used as flood gage at bridge on U.S. Highway 67, 2.4 miles upstream. Drainage area. Approximately 24,840 sq mi, of which 9,240 sq mi is probably noncontributing. Gage-height record. Water-stage recorder graph from flood gage except 7 p.m. May 28 to 7 a.m. May 30, and 4 a.m. June 4 to 10 a.m. June 6, for which graphs were drawn on basis of record for base gage and on normal fall between the two gages. Datum of gages is 567.82 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Backwater from Paluxy Creek and Squaw Creek at times on Apr. 26, 27, and May 3, 4, 23-26. Maxima. April-June 1957: Discharge, 87,400 cfs 4 p.m. May 27 (gage height, 33.89 ft at flood gage; 30.02 ft, by levels, at base gage). 1923 to March 1957: Discharge, 97,600 cfs May 18, 1935 (gage height, 23.68 ft at base gage), from rating curve extended above 68,000 cfs. Maximum stage during period 1900-23, about 30.0 ft at base gage May 8 or 9, 1922; information from local residents. Remarks. Flow largely regulated by Possum Kingdom Reservoir, except during major flood, and by several smaller reservoirs in Clear Fork and other basins, having a combined capacity of about 946,000 acre-ft. Gage heights and dis­ charges at indicated times are at flood gage.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1. ... 378 85, 100 23, 000 11 186 8,570 11,800 21 1,170 36, 700 2,330 2.. .. 324 82,500 23, 100 12 170 20,000 6,940 22 1,010 37,600 2,240 3...... 396 77,500 25,000 13 15P 45, 400 3,670 23 2,950 23, 200 2,360 4 324 82, 200 22, 100 14 170 45, 800 3,300 24- . 3,980 34,200 2,210 5 238 82,400 24,000 15 396 44,800 2,700 25 3,820 38,300 1,900 6 226 58, 800 27,800 16 312 39, 000 2,390 26 2,740 60,900 2,26C 7 _ 194 37,100 23,500 IT- 280 39,800 2,340 27 25,500 85,100 2,300 8 ... 214 24, 800 19,900 IS 246 31,400 2,370 28 40,800 67,800 2,270 9 . ... 265 11,800 13, 400 19 1,170 30,400 2,320 29 49,400 44,800 2,270 10 214 9,100 12, 300 20 592 33, 700 2,310 30 66,500 39, 300 2,250 31 30,600

Monthly mean discharge in cubic feet per 6,811 44,800 9,221 Runoff, in thousands of acre-feet 405.3 2,754 548.7 B144 FLOODS OF 1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge, height height height

April 20 April S9 Con. May 14 Con. 12p.m...... 5.98 378 12m.. 25.70 48, 800 24.93 45, 700 26.12 50,500 12 25.15 46, 600 April 21 12 ...... 26.83 53,300 May 15 3 a.m 7.30 1,480 April 30 5 ...... 6.13 483 25. 17 46, 700 7...... 6.38 688 28.10 59, 000 4 ...... 25.15 46, 600 10 6.35 664 29.70 66, 500 8 ...... 25.05 46, 200 12m...... 6.60 880 31.20 74, 000 12m-. 24.85 45,400 3 p.m...... 7.40 1,580 12 32.40 80, 000 23.72 41, 200 10 7.54 1,720 12 7.49 1,670 May 1 May 22 April 88 33.30 84, 500 12p.m ..... 20.96 31, 500 12 m...... 33.70 86, 500 6 a.m .... 7.04 1,240 33.74 86, 700 May 23 8...... 6.78 1,020 ]2.._ ...... 33.46 85,300 12m...--.... 6.55 840 19.20 25,600 4 p.m...... 6.46 768 May % 18.32 23, 000 9 - .... 6.46 768 10 16.75 18,600 12 6.53 824 32.84 82, 200 16.10 17, 000 32.50 80, 500 2 p.m.-...... 16.85 18,900 April 83 10 32.67 81, 400 17.57 20, 900 12 32.50 80, 500 6. 18.55 22, 700 4 a.m 7.42 1,600 19.65 24,800 6...... 7.83 2,010 May 3 12 ...... 21.10 29,200 8 ...... 7.98 2,160 12m...... 8.93 3,220 32.00 78, 000 May 24 4 p.m....- ... 9.58 4,030 11 . 33.27 75, 800 6 . 9.70 4,190 12m.-.-- - 33.17 75, 600 21.42 30, 600 8 - 9.70 4,190 32.75 76, 300 4 21.50 31, 800 12 - - 9.55 4,000 12 32.40 78, 600 8 ...... 21.62 33, 400 12m.-.... 21.87 34, 600 April 24 Mag 4 22.30 36, 100 12 ...... 22.54 36, 900 6a.m. __ _ ._ 9.27 3,630 32.45 80, 200 10 9.21 3,550 12m...... 32.80 82,000 May 25 12m... 9.31 3,680 33.65 86, 200 3 p.m._,- .... 10.00 4,600 22.48 36, 700 4...------9.95 4,530 May 5 10 22.10 35, 400 7 ... 9.70 4,190 22.08 35, 300 12 9.73 4,230 33.70 86, 500 22.22 35, 800 8 - -. 33.55 85, 800 4 -. 23.13 38, 200 April 25 12m. 33. 15 83, 800 8 ...... 24.87 42, 600 6 p.m.... _ . 32.30 79, 500 10 25.46 44, 500 6a.m___, __ 9.67 4,150 12 31.05 73, 000 12 ...... 25.77 46,500 12m....----. 9.56 4,010 6 p.m...... 9.22 3,570 May 11 May S6 12 8.64 2,880 12p.m.-. .... 11.16 6,360 26.34 49, 800 April 26 8 27.00 54, 000 May 12 12m.--- . 28.24 59,600 6 a.m...... 8.16 2,360 30.38 69, 900 12m. ....-__. 7.76 1,940 la.m...... 11.29 6,560 12 --. 32.20 79, 000 7.74 1,920 2 ...... 11.66 7,190 4.-...... 7.82 2,000 3 12.-28 8,300 May 27 6 -_- 8.47 2,700 9 ...... - 15.89 16, 400 10 10.50 4,460 12m 16.94 19, 100 32.97 82, 800 12 14.00 5,780 18.25 22, 800 8- - 33.47 85, 400 5 . 18.60 23, 800 12m...... 33.78 86,900 April 27 8 21.00 31,600 2 p.m...-- -- 33.87 87,400 10 22.25 35, 900 4 33.89 87,400 2a.m.---. ... 16.20 9,100 12 23.14 39, 100 33.81 87, 000 6 18.00 19, 300 8 33.68 86, 400 9- ...... 18.90 24, 700 May 13 10 33.46 85, 300 12m._ -__-.- 20.00 28, 200 2a.m.-.-. .. 23.43 40, 100 12 33.10 83, 500 5 p.m...... 21.40 33, 000 4 23.50 40, 400 12 . 22.30 36, 100 6 23.50 40, 400 May 28 T...... 24.10 42, 600 6a.m__ __ _ 31.80 77, 000 April 28 9 24.90 45, 600 12m 30.05 68, 200 12m 25.40 47, 600 28.12 59,000 6 a.m.- .... 23.00 38, 600 25.80 49, 200 12 26.20 50, 800 12m... 23. 50 40, 400 12 25.24 47, 000 6 p.m...... 24.10 42, 600 May Z9 12 25.35 47, 400 May 14 25.2 46, 800 April 29 24.78 45, 200 12m. ------24.5 44, 100 10 24.75 45, 100 6 p.m _-- _-. 24.0 42, 200 6 a.m _ _ ... 25.50 48,000 12m-- 24.82 45, 300 12 23.8 41, 500 TEXAS AND ADJACENT STATES B145

101. PALUXY CREEK AT GLEN ROSE, TEX. Location. Lat 32°13'50", long 97°46'30", on left bank at downstream side of pier of bridge on U.S. Highway 67, 1 mile upstream from Cross Branch, 1.2 miles southwest of Glen Rose, Somervell County, and 4.7 miles upstream from mouth. Drainage area. 399 sq mi. Gage-height record. Water-stage recorder graph. Discharge record. Stage-discharge relation denned by current-meter measure­ ments below 32,000 cfs. Maxima. April-June 1957: Discharge, 44,000 cfs 12 p.m. Apr. 26 (gage height, 24.12 ft). 1923-25, 1947 to March 1957: Discharge, 48,500 cfs May 17, 1949 (gage height, 25.1 ft, from floodmark). Maximum stage known, 27.2 ft Apr. 17, 1908. Flood of May 21, 1922 reached a stage of 26.0 ft. Flood of November 1918 reached about same stage as flood of May 21, 1922; information from local resident.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 207 311 141 11 8.5 187 96 21 120 184 51 2 45 277 705 12 .... 8.0 1,070 90 22..... 85 147 48 3 60 5,190 874 13 9.0 3,580 90 23 1,330 3,790 51 4...... 40 1,020 785 14 9.0 686 80 24 383 1,310 59 5 23 366 433 15 8.5 286 71 25 168 5,050 47 6. 17 227 278 16 . 9.0 204 64 26 4,460 2,210 43 7- --.. 13 172 181 17 8.5 160 61 27 6,930 440 41 8 10 144 147 18 8.0 2,300 57 28 2,360 302 38 9. 9.6 672 124 19..... 310 515 54 29.. 1,290 227 36 10...... 9.0 304 109 20. 48 248 58 30 1,450 184 33 31 157

Monthly m an d ischarge, in cubic feet per 648 1,030 165 Runoff, in acre-ft;et 38, 550 63, 310 9,810

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April M April 24 Con. April W Con. 12p.m...... 2,58 48 3.77 406 19.40 25,700 9 _ . _ ...... 3.36 241 3.... _ . _ .. 17.70 20,400 April 23 11 3.30 220 4 -- ... 15.70 15, 000 12 269 5 ...... 13.30 10, 300 2.63 56 6...... 11.80 7,880 4 2.78 82 7-. 5 4QK 4,130 6 . 5.32 1,280 283 9 3,240 7...... _. 5.70 6 3.24 200 10 7.17 2,630 8 3 O7 6.28 1,940 10- 6.90 2,390 101 5.38 1,340 12m...... 6.46 2,080 6 ...... 4.85 1,000 6.32 1,940 9 4.50 795 3...... 6.62 12m...... 2.78 82 12 4.25 658 6 ...... 1 sno 2 7fi 78 8 5.44 1 *3so 6 ... - 3 00 10 4.83 1,000 7 ...... 1,220 12...... 4.36 718 8 12.50 9,000 3.91 475 9 ...... 15.80 15, 300 12m. . 3.72 384 April 24 3.71 380 11 21.50 33, 100 3 4.04 542 5 a.m____ ..... 3.63 344 12-. .. - 24.12 4 _ . _ ...... 4.80 970 11 3.27 210 5 _ ----- _ .. 10.30 5,810 12 m ...... 3.43 266 April 27 6 ...... 11.75 7,880 1 p.m...... 4.29 680 1 a.m ...... 21.50 33. 100 7...... 11.94 8,040 B146 FLOODS OF 1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957- Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 38-Con. May 9 May IS Con 11.60 7,560 3.00 131 5.01 1,090 10 . 10.10 5,570 5 . 3.13 166 5 . 5.27 1,250 11- _ ,--.. 8.80 6 3.61 QQ4 6 . 7.15 2,630 12...... 7.65. 9 - 3.64 348 7 8 97 12m...... 3.58 322 9 - 8.19 April 29 4.02 531 11 9.24 4,570 2_ 4.90 1,030 12m. ... 9.00 4,350 3 a.m _ __ .-- 5.92 1,670 3. 5.63 3,330 6 ...... 5.23 1,250 5.87 1,640 4 6.96 10 4.76 6 1,480 6 6 19 1,870 12m. ..._..-. 5.41 1,340 8 - 1.120 9 5 0-1 1 p.m.. _ ... 5.49 1,410 10 4 C7 822 12 ...... 4.77 4.-...... 5.30 1,280 4.21 636 7- ..... 940 12 ...... 4.35 712 4.17 614 April 30 3.64 12m---...._ . 3.86 450 12m .... . 3.39 252 3.53 302 3 a.m...... 4.14 597 3 1 K. 5 ...... 4 7*, 940 6...... 8.83 4,130 7 ... - 9.27 4,680 3.00 131 9 ...... 7.83 3,150 3 07 149 10 6.92 2,390 3 If) 157 '12m..- - 5.74 1,570 8 oon 3 p.m. .-. - 4.87 1,000 3.35 238 2.99 129 6 ...... 4.35 712 A QK 712 3 no 139 9 ...... 4.06 553 4 25 658 12 3.85 445 8.12 3.. . ._..... 7.72 3.060 Mayl 5.51 4...... _ 5,010 4 5.22 1,220 5. ... -- 11.85 7,880 12m...... 3.48 283 4.73 140 6 13.60 10, 800 12p.m...... 3.34 234 g 4.21 14.00 11, 500 12m ...... 3.97 505 9 14.15 11, 900 May g 3.70 375 10 13.60 10, 800 5 . 3.80 420 12 11.30 7,120 12m.-- -. 3.24 200 6 5.70 4 p.m...... 3.23 197 7.-- 7.83 3,150 5 . 3.31 224 g 7.15 6 5.26 1, 250 10 5 59 9 OK 4, 570 7 -_ _ 4.17 614 12 4.62 oen 2 7.75 3,150 8 . 3.52 298 2,310 10 3.27 210 6 5 50 12...... 3.20 187 g 4 00 1,030 5.17 1,180 12m- 4.50 795 May S 6 .... 4.35 712 4.07 558 7.50 12 ...... -__ 3.81 425 6 a.m _ _ _. 3.13 166 10.50 7 . ._. 9.10 4,460 g 11 55 8 .. .. 13.62 10, 800 10---. ______19 90 0 COrt 9 14.00 11, 500 10.17 g 334 10 15.15 13. 900 10.12 5, 570 12m- 3 Q1 475 11. 14.50 12,500 10 94 A 7C 970 12m 12.80 9,480 9 70 10.80 1 p.m_ _ _ 11.80 7,880 6. . 7 98 S oon 3 13.00 9,800 2 . 11.80 7,880 2 01fl IQ on 11, 300 3. 12.34 8,680 5 93 6- -- __ 13, 700 4 . 12.00 8,200 5.38 15.85 15,300 1 K OK 6 9.52 g 13 900 7 8.42 3,730 10 12 45 8,840 9 7.59 2,970 11.98 8,200 10. . 7.48 2,880 A K7 822 8,200 12. . . 6.84 2,310 4.17 614 6 p.m . 3.87 455 May $6 May 4 12 3.69 370 11.95 8,200 3 a.m. . 5.73 1,570 2 11. 65 7,560 6 5.29 1,280 4,030 12m 4.60 850 ^ 14 169 6 6.65 2,150 fi p.m 4.27 668 1,600 12 . 3.99 515 10 c on 1,340 c flQ 1,150 May 8 3.58 4.68 910 2____. ______4.27 668 8 ... 4.39 734 12p.m______3.00 131 C7K 12 .. 4.17 614 TEXAS AND ADJACENT STATES B147

102. NOLANDS RIVER AT BLUM, TEX. [Location. Lat 32°09'02", long 97°24'10", on right bank 60 ft upstream from bridge on State Farm Road 67, 0.5 mile downstream from Gulf, Colorado and Santa Fe Railway Bridge, 0.6 mile northwest of Blum, Hill County, 2.8 miles downstream from Mustang Creek, and 3.2 miles upstream from Rock Creek. Drainage area. 276 sq mi. Gage-height record. Water-stage recorder graph. Backwater from Whitney Reservoir May 5 to June 17. Datum of gage is 551.48 ft above mean sea level datum of 1929, Fort Worth supplementary adjustment of 1942. Discharge record. Stage-discharge relation defined by current-meter measure­ ments . Maxima. April-June 1957: Discharge, 15,400 cfs 4:30 p.m. Apr. 24; gage height, 18.63 ft May 13 (backwater from Whitney Reservoir). 1924-25, 1947 to March 1957: Discharge, 25,000 cfs May 17, 1949 (gage height, 24.0 ft, from floodmark), from rating curve extended above 16,000 cfs by logarithmic plotting. Maximum stage known since 1877, 35.0 ft May 8, 1922, from information by local resident.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 __ ... 516 329 300 11____- 3.7 330 50 21 3,010 70 23 2 61 340 300 12 3.7 1,200 40 22-__._ 480 80 23 3 . 24 1,590 410 13 4.0 2,500 40 23 6,680 360 22 4.. .. 43 1.260 690 14 3.2 1,200 40 24___ . 5, 820 830 21 5_ _ 16 410 390 15 4.0 410 30 25.. 1,520 230 20 6. .. 9.4 190 170 16- 3.7 190 30 26 2,930 140 20 7 6.9 150 100 17 3.7 140 30 27 4,650 100 19 8 . . 5.5 130 70 18 4.0 100 28 28 1,180 90 18 9... . . 4.5 120 60 19____. 1,130 80 25 29-... 1,590 80 17 10 4.0 120 60 20 915 80 24 30 1,070 80 16 31 690

Monthly mean d ischarge, in cubic feet per 1,057 439 103 Runoff, in acre-f( et 62, 870 27, 010 6,120

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 18 April ^0 Con. April 81 Con. 2.13 3.5 6.15 1 790 9.55 4,850 6...... 6.43 2,000 9.91 5,210 April 19 3 8.38 3,680 11...... 5.57 1,380 8.22 3,530 5 a. m_ ...... 2.14 3.7 12m.-- 8.49 3,790 7 ...... - 2.22 6.2 4.72 7QQ 8.30 3,600 12 m._ 2.18 4.8 7 415 9 7.25 2,650 1 p.m.. ___ 8.45 3,750 10- -- 3.71 12 - 5.71 1,480 2 8.84 12 3 56 215 3 A/nriJ PP 4 __ ..... 8.92 4,220 April « 5...... 8.20 3.510 4.75 818 6...... 6.75 380 8 4.18 474 7...... 5.66 3... . 4 95 948 3.86 322 9 -_-__.___ 4.73 4...... 5.47 1,310 3.66 246 12 4.14 5... .- . . 8 3.51 198 6 ______5.50 1,330 3.39 162 April 20 7 8.70 8 . April iS 3.86 317 9.. 9.67 4 970 4...... 4.41 606 11.. _ ... __ 9.18 4,480 1 a.m..-- ... 3.36 153 B148 FLOODS OF 1957

Gage height, infect, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Dischargi height height height

April 23 Con. April 26 Con. April 30 3.48 187 6,460 4.77 4...... 4.42 612 4 ...... 11.12 6,540 5 9.20 4,500 5 ... .--- 9 OK 5.00 980 6...... 11.70 7,240 7 -. ... 7 S^ 3,170 7. -- 6.39 1,970 8 ----- 14.30 7 66 3,010 g 6.50 10 ...... 16.40 9 3, 510 1,350 11 .. 17.10 13, 900 10 -. 4.84 876 12m. -....-.. 17.12 14,000 7,180 8...... - 4.42 612 1 p.m.. _ .. 16.86 13, 600 12.32 7,980 12 - 4.18 474 3- . 15.52 U QAA 6 .... 5,410 4.Dril^ £7 8 7.75 3 1 (\f\ 10 6.55 9 HQft 3.96 362 12...... 5.70 1,470 10, 700 12nu 3.84 312 3...... 15.22 11, 500 3.67 250 April %4 5 15.48 11,800 6 ...... 15.39 11,700 May 2 3 a.m..-..-... 4.91 922 14.10 10, 100 5- . _ 4.57 702 212 4.36 7 80 3,140 3.52 201 12m-... 4.14 452 6.58 2,120 6 3.66 246 1 p.m.. _ .. 5.90 1,610 5.32 1,200 T...... 4.30 540 2...... 13.20 4.73 Qf\A 8 ... . 1,280 3 ...... 16.40 13, 000 12 10 ------4.39 594 3:30-- -. 12 400 12 3.89 335 4 . 1C 1C 5 14, 100 4am 4.24 K.f\7 6--.------16.67 13, 400 g 430 3.60 226 8 1 K CQ 1 9 (\f\f\ 3 QQ 376 4.58' 708 9 3 Q7 9 4.22 496 10.------.. 15.84 12, 300 12m____ - 3.89 330 11 15.60 4 - 618 4.74 811 12 13.80 9,760 6.69 2,200 2_ -.-__- 5.44 1,290 7 - fi 91 3 ...... 5.73 1,490 April S3 3,100 4_ ------6.70 2,200 8.26 3,570 5- --.---. 9.69 4,990 10.40 11 Q Qfi 3,660 6 9.06 4,360 3 . 7.60 2,960 3,390 7- -- 7.48 2,850 5 .... 1,960 8 ...... 7.28 2,670 9 5 1 Q 1,070 8.63 3,930 12m-- . 4.70 7Q K A Dril £9 12 8.26 3,570 C7n ^ 8. . . 4.10 430 1,860 12 3.90 335 6 5.45 1,300 9 1,060 7.05 2,480 April $6 12m._ 5.20 1,120 8 ... 5.47 1,310 e; 41 1,270 12m. .__ . 4.72 798 5 a.m_.___- _. 3.74 274 3...... 1,430 4.34 564 10 3.62 232 5 ...... 6.54 8 4.10 430 11 7.40 2,780 6 .... 6.61 2,140 12 3.91 340 12m---_.--.. 9.28 4,580 8 ...... 6.08 1,740 2 p.m...... 10.68 6,050 12. . . 5.03 1,000

103. WHXTNEY RESERVOIR NEAR WHITNEY, TEX. Location. Lat 31°52', long 97°22', on State Highway 22, in intake structure of Whitney Dam on Brazos River, 2.4 miles upstream fron Coon Creek, 4.0 miles upstream from Iron Creek, 7.4 miles southwest of Whitney, Hill County, and at mile 442. Drainage area. Approximately 26,170 sq mi, of which 9,240 sq mi is probably noncontributing. Gage-height record. Water-stage recorder graph. Datum of gage is at mean sea level, datum of 1929 (levels by U.S. Army Corps of Engineers). Maximums. April-June 1957: Contents, 1,980,000 acre-ft 7 a.m. May 29 (elevation, 570.25 ft). 1951 to March 1957: Contents, 525,100 acre-ft Oct. 3, 1955 (elevation, 527.66 ft). TEXAS AND ADJACENT STATES B149

Remarks. Reservoir is formed by gravity-type concrete and rolled earth-fill dam. Main dam completed in April 1951 and deliberate impoundment of water began Dec. 10, 1951. Total capacity, 2,017,500 acre-ft at top of seven­ teen 40- by 38-ft taintor gates (elevation, 571.0 ft). Capacity at spillway crest, 642,200 acre-ft (elevation, 533.0 ft, bottom of taintor gates). In addi­ tion to the taintor gates, flood-control outlet works consist of sixteen gate- controlled 5- by 9-ft conduits (elevation of invert, 448.83 ft). There are two penstocks (elevation of invert, 476.0 ft), 16 ft in diameter. Reservoir used for flood control and power development. Records furnished by U.S. Army Corps of Engineers.

Elevation, in feet, and contents, in acre-feet, at 12 p.m. of indicated day, 1957

April M iy Juine Day Elevation Contents Elevation Contents Elevation Contents

I... __ _ ...... 512. 38 282, 200 541. 02 851, 200 568. 27 1, 885, 000 2...... 512. 27 280, 900 545. 08 973, 000 568. 16 1, 880, 000 3. . 280, 000 549. 64 1, 124, 000 567. 90 1,867,000 512. 21 280, 200 553. 80 1,274,000 567. 45 1, 846, 000 5... 512. 21 280, 200 557. 12 1, 4u2, 000 267. 02 1, 826, 000 6...... 512. 21 280, 200 559. 24 1, 487, 000 566. 62 1, 807, 000 7....-.--..--.----..--.. __ .._ 512. 23 280, 500 559.94 1, 516, 000 566.02 1, 779, 000 8...... 512. 17 279, 800 560. 00 1, 518, 000 565. 30 1, 746, 000 9...... 512. 04 278, 200 559. 54 1, 499, 000 564.30 1,702,000 10...... 511. 89 276, 500 558. 67 1, 464, 000 563. 18 1,653,000 11.....-.. ..-.-..- ...... 511. 77 275, 100 558. 22 1, 446, 000 562. 20 1,611,000 12...... 511. 64 273, 600 558. 65 1, 463, 000 561. 12 1,564,000 13...... 272, 800 561. 54 1, 582, 000 559. 77 1, 509, 000 14-..---.--...... 511. 55 272, 600 563.50 1, 666, 000 558. 82 1,470,000 511.38 270, 600 1, 742, 000 557. 51 1,417,000 16...... 511.23 268, 900 566. 04 1, 780, 000 555.94 1, 356, 000 17 268, 700 566. 61 1, 807, 000 554. 26 1,292,000 18 511. 16 268, 100 566. 92 1,821,000 552. 60 1,230,000 19 511. 78 275, 200 566. 78 1, 815, 000 550. 87 1, 167, 000 20 __ _ 512. 15 279, 500 566. 63 1, 808, 000 548. 93 1,100,000 21...... _ -- 513. 20 292, 100 566. 75 1, 813, 000 546.88 1, 031, 000 22 513. 48 295, 500 566. 89 1,820,000 544.78 963, 700 23 516. 09 329, 500 566. 96 1, 823, 000 542.68 899, 700 24...... 519. 08 372, 700 567. 05 1, 827, 000 540. 33 831, 600 25 386, 900 567. 16 1,833,000 537. 80 762, 400 26...... 521. 06 404, 100 567. 86 1, 865, 000 535. 13 693, 800 27. . . 525. 10 475, 200 569. 23 1,931,000 532. 38 627, 800 28...... 570. 21 1, 978, 000 530. 2V 580, 200 29 641, 000 570. 10 1, 973, 000 528. 71 546, 800 30 536. 74 734, 600 569. 71 1, 954, 000 527. 14 514, 700 31...... 569. 17 1,928,000 +452, 800 +1, 193, 400 -1,413,300

104. BRAZOS RIVER NEAR WHITNEY, TEX. Location. Lat 31°50 30", long 97°19'30", on right bank 3,000 ft upstream from Iron Creek, 1.0 mile downstream from Coon Creek, 3.4 miles down­ stream from Whitney Dam, 7.5 miles south of Whitney, Hill County, and at mile 439. Drainage area. Approximately 26,190 sq mi, of which 9,240 sq mi is probably noncontributing. Gage-height record. Water-stage recorder graph. Datum of gage is 417.39 ft above mean sea level, datum of 1929 (levels by U.S. Army Corps of Engineers). Discharge record. Stage-discharge relation defined by current-meter measure­ ments. B150 FLOODS OF 1957

Maxima. April-June 1957: Discharge, 58,200 cfs 9 a.m. May 28 (gage height, 27.34 ft). 1938 to March 1957: Discharge, 71,800 cfs May 18, 1949 (gage height, 31.03 ft). Maximum stage known since 1853, about 45 ft May 9, 1922, from information by local residents. Remarks. Flow regulated by Whitney and Possum Kingdom Reservoirs on Brazos River and by several smaller reservoirs in Clear Fork and other basins, having a combined capacity of about 2,946,000 acre-ft.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 1,140 17, 600 50, 500 11 1,020 23,300 36, 100 21 166 36, 200 38, 800 2 ... 1,570 20, 200 28, 800 12..... 1,100 12, 700 34, 200 22___-_ 532 37, 200 39, 100 3 . . 1,240 14, 900 34, 500 13 333 9,760 33,900 23 1,180 37, 500 38, 000 4.. ._ 591 8,350 36, 300 14 130 5,920 24,600 24 402 36, 500 39, 100 5 174 17, 600 36, 000 15..... 1,280 7,330 30, 700 25 1,180 40, 400 39, 800 6. ... 48 21, 900 39, 400 16 1,270 19, 600 34, 800 26 1,900 48, 300 40, 000 7 25 24, 600 41, 400 17 634 27, 300 37, 200 27 .. 4,040 53, 800 38, 900 8 560 24, 600 40, 000 18 582 32, 400 38, 100 28 4,200 55, 700 28,400 9 . 1,080 26, 000 39, 400 19 769 33, 600 34, 500 29 4,340 54, 000 20,000 10 1,170 27, 400 39, 000 20 297 38,900 38, 500 30 11,200 53, 100 19,200 31 53, 000

Monthly mean c ischarge, in cubic feet per 1,472 29, 670 35, 640 Runoff, in acre-ft et 87.6 1,824 2,121

Gage height, in feet, and discharge, in cubic 'feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 25 April 29 May 4 12 p.m.._ ... . 6.20 12m... . 8 Q4 4,130 9.17 4,670 8 07 4,020 W...... 10.50 6,960 April 86 10 9 O7 12m___. _ .. 11.82 9,620 12 _ ...... 11.13 8,160 12.03 10,100 5.68 8 13.42 13,200 2----.-. __ .. QQO 12 13.67 -JQ 7HO 3 5.15 4 _ - _ -....- 4.98 218 12m ... . 9,410 6 4.78 146 10 OC 13,000 9 6.65 1,310 6 13.87 14,200 13.75 13,900 10 6.40 1,090 12. 10 on 14, 300 10.. 15.57 18, 500 11 7.65 9 °.fin 15.85 12m...__ 8.17 3,000 16.10 19,900 1 p.m._. 7 79 2,520 8 16.41 20,700 2 8.70 3,740 IQ no 14, 300 12 16.50 21,000 4 ...... 9.02 11 -i e 70 6 ...... 8.70 3,740 12m 1 C QO 19,400 May 6 7 7.60 2,300 16.16 20,000 8 ...... 12 16.17 12m... 16.59 21, 300 9__ _ - ...... 6.99 16.61 21,300 10 7.53 2,210 6 16.85 22, 000 12 8.24 3,090 8 17.52 24, 100 12m 20,200 12 17.65 24,400 April tl 12 p.m___ .... 16.24 20,300 May 11 8.75 3,830 12m___ ...... 8.90 4,060 12 p.m__ ..... 9.83 5,760 8p.m. .. _ 8.96 4,160 12m.. . 16.32 20,500 9 9.78 16.35 20, 600 May n 12. _ .... _ . 9.04 4,290 2 ____ .. . 18, 300 3 IQ on 9.68 5,510 April %8 4...... 11, 000 8 9.73 5,590 5 ___ ...... 10.75 7,440 9 10.30 6,590 12m_____ .... 9.02 4,260 6 . 9 70 5,540 10 12.20 10,400 8.86 4,000 9 17 4.670 13.81 14, 100 12 ...... 9.02 4,260 1 12- ______9.15 4,640 3 p.m... .. 15.84 19,200 TEXAS AND ADJACENT STATES B151

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May 12 Con. May If Con. May 28 16.10 19 900 on AP; 32,900 27.19 57,600 16.66 9 ... .. 27.34 58,200 16.67 21, 500 May 18 26.35 54,200 0 ...... 14.73 1 fi ^nn 26.35 54,200 L2 12.70 n Kflfl 20.50 33, 100 35,400 May 13 21.33 35, 800 5 _ ...... 19.53 30,100 12m...... 26.29 54,000 12.37 10, 800 12 19 46 29,900 6...... 12.35 1fi ftflfl 10...... 13.24 10 sfin 12m...... 12.90 26.29 54,000 12.57 11, 300 19.46 29,900 25.72 51,700 6------...... 10.11 9fl VJ 32,800 25.64 51,400 8--.----.- ... 9.84 21 30 35,700 26.06 53,000 12 9.84 5,780 6...... 36, 100 12------26.10 53,200 9 38, 700 May 14 19 39,200 May 31 12m...... 9.93 5,930 12m 26.08 53,100 12p.m...... 9.99 6,030 52,700 21.93 37,800 May 15 June 1 Mat 25 10.09 6,210 25.87 10.14 6,300 22.01 38,000 25.78 51,900 9 12.45 11,000 23.00 41,500 10...... 22.08 38,300 12 14.85 16, 600 43,800 1 9 19.51 30,000 10 May 16 19 24.39 46, 500 15.01 17,000 18.63 27,400 7. . ... 15.05 17,100 18.53 27,100 9 15.85 19,200 46, 700 19.21 29,100 12 m...... 16.11 19,900 10 - 48,900 9 19.41 29,700 16.18 oc; 17 12 20.76 33, 900 8...... 17.10 oo cnn OK f)O 49,700 12 17.20 23, 100 9 48,600 19 25.22 49,700 May 17 20.90 34,400 20.88 34,300 17.22 May 27 20.88 34,300 9...... 17.90 25,200 10...... 21.38 36, 000 12m...... 26,300 25 34 EA <>nn 12 36,300 19.31 29,400 26.77 55,900 5-....-.-. ... 19.47 97 flQ 57,200 8..-. _ . _ .. 20.35 32,600 12 97 1 Pi

105. AQTJILLA CREEK NEAR AQTJILLA, TEX. Location. Lat 31°51', long 97°12', on right bank just upstream from pier of bridge on Abbot-Aquilla county road, three-quarters of a mile upstream from Palls Branch and 1 mile southeast of Aquilla, Hill County. Drainage area. 309 sq mi. Gage-height record. Water-stage recorder graph except Apr. 1-7, 9 p.m. May 25 to 11 a.m. May 28, and 12 m. June 8 to 4 p.m. June 17. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Discharge for periods of no gage-height record estimated on basis of range in stage, records of weather, and records for nearby stations. Maxima. April-June 1957: Discharge, 8,550 cfs 11 p.m. Apr. 23 (gage height, 27.70ft). 1924-25, 1938 to March 1957: Gage height, 30.84 ft May 2, 1944 (discharge not determined). Maximum stage .known, 34 ft Aug. 31, 1887; information from local resident. Flood of Sept. 27, 1936, reached a stage of about 33 ft according to floodmark. B152 FLOODS OF 1957

Peak discharge of this flood, 84,500 cfs, as determined by slope-area measure­ ment (drainage area, 370 sq mi) abbut 9 miles downstream from station.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 - 469 415 318 11 2.8 709 26 21 2,980 80 78 2 . 147 322 310 12 2.4 1,520 24 22 2,920 87 13 3...... 698 816 440 13 1.8 3,170 21 23 5,870 1,030 9.5 4 351 2,900 874 14...,. 1.7 4,110 1-8 24 5,890 903 7.5 5 __ .. 177 643 533 15. . 1.7 394 16 25 5,620 124 6.2 6...... 87 124 193 16..... 2.1 153 14 26 1,610 . 70 5.6 7 40 81 66 17 2.2 148 12 27 4,130 50 5.0 8. ... 15 64 47 18 2.1 86 122 28 1,170 42 4.4 9 7.8 179 38 19 2.0 86 139 29 1,540 35 3.5 10 .__ 3.5 329 31 20 796 83 39 30 679 30 2.5 31 841

Monthly mean c ischarge, in cubic feet per 1,174 633 114 Runoff, in acre-f>et 69,860 38, 920 6,800

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April go April ^4 Con. April 28 Con. 12 p.m. ___ 3.72 52 26.18 6,680 10 a.m _ .... 10.80 920 24.94 5,660 12 m...... 9.25 678 April il 22.50 4,270 8.05 507 6 20.89 3,560 9 ... 6.54 322 3.85 62 8 ...... 4,480 10 7.85 480 2- _ . _ . __ 7.50 436 10 23.90 5,000 11 9.95 787 3. ._ 12.40 1,220 12 24.20 5,180 12 12.00 1,140 4 _ ... . 15.20 1,820 5.. ______. 17.00 2 270 April^ 25 6 . 18.18 9 .... 19.60 3,070 25.58 6,160 15.40 1,870 12m __ 19.82 3,140 11-- -..- . 24.82 5,580 5 . 17.29 2,350 20.18 3,270 5,600 8 15.72 1,940 5... _ 21.58 3,860 5,740 10 13.85 1,520 8 22.54 4,290 24.85 5,600 12m.--- _ .. 13.02 1,340 10 4,360 12 23.15 4,580 12.95 1,330 12 13.10 1,360 Attril^ %6 6 12.99 1,340 12 11.00 960 21.50 3,820 5 a.m. __ ... 22.07 4,070 6 - _. 17.90 2,530 April 30 9 . 9 15.70 1,940 12m...... 3,700 9.05 648 19.50 3,040 9.75 755 6 8.50 570 4. ____ . . 17.00 2,270 7.20 400 8 8.45 563 5...... 15.30 1,840 6 6.53 321 10 7.87 483 6 1,460 11 6.00 263 12 ni._ _ ... . 8.19 527 7...... 12 8.80 612 8.42 559 S...... 10.60 QQO 4 8.88 623 9 ...... 9 CO 8 . 10.30 843 12 8.04 enfi 10 10.54 882 15.20 1,820 12 10.48 872 2...... 18.60 2,750 7.25 406 3 21.00 3,610 Mayl 3 ...... 7.55 442 23.40 4,720 4 . . 12.20 1,180 7 21. 38 5,300 2 a.m __ .... 10.10 811 5 ...... 17.30 10 24.85 5,600 6 8.60 584 6 .... 4,130 5,390 12m. .... 6.40 307 7...... 5,120 22.60 4,320 4 p.m___. ... 5.80 242 8 ... 6 20.95 3,590 8 5.48 210 9 6,650 20.50 3,400 12 5.33 195 12m.. -_ 26.90 7,400 12 19.93 3,180 27.25 7,880 May 2 11 8,550 April K 12 27.67 1 a.m . -. .. 5.80 242 18.10 2...... 6.63 332 Afrril 24 6 14.95 1,760 4..__ _ --- 6.07 271 4 a.m __ --.. 27.16 7.740 8 12.60 1,260 8 7.82 477 TEXAS AND ADJACENT STATES B153

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957- Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May % Con. May 13 Con. May 31 Con. 12m--...... 6.67 337 10 a.m. __ 14.10 1,570 S en 4 p.m ...... 5.92 254 11. .. 17.40 2,390 7 10.70 909 7 -_____ 5.67 229 12m . _ __. 9 12 02 1,140 8 ... - 6.50 318 23.80 in ^n 843 9.- . ... 6.95 370 24.88 5,620 8.40 12 ...... 6.08 272 6 25.18 5,840 QQfi 9 ... . 24.80 5,570 T...... 13.60 1,470 May 3 12 24.34 5,270 9 1,680 12.. ---__ 12.95 1,330 199 May 14 8 217 10 f)A GO 5,650 12m.. ____ - 6.88 362 g 24.60 9 70 747 1 p.m.,.- ... 6.52 320 12m 4,560 6 -- . 376 2 6.52 320 3,530 227 3 6.70 340 6 . 18.50 2,720 5 r»O 166 4 __ - ...... 9.40 700 9 16.35 2,100 127 5_ _ ..- __ . 10.80 926 12 14.00 1 een 12 4.33 IAO 7 . 1,580 9 .. 16.25 2,080 12 20.65 3,460 3 a.m __ ... 9.60 731 4.01 75 May 4 6 _ . 6.85 358 10. 4.12 85 9... ___ .... 6.23 288 12m 5.10 172 2 a.m...... 21.92 4,010 12m 5 QO K OO 184 3... 21.70 3,910 215 6 4 79 6 18.50 2,720 5.24 186 7 . - - 5.20 1ft9 9 .... 16.42 2,120 8.00 500 12m.. _ -.-_ 18.00 2,560 9 960 3 p.m. . ... 19.22 2,940 11 _ .__ -. 10 QC 1,540 5 . 19,40 3,000 4 05 79 12 1,640 7 19.30 2 970 18.70 2 7ftn 12 2 4fifl 12m 78 13.30 1,400 May 5 10 p.m___ .... 77 10.55 884 14.60 1,680 4 60 127 6 528 6 10.05 803 12 7.10 388 9 6.15 280 8 7.90 487 12m-- 5.17 179 12m._ _ -_--- 6.32 298 5.05 IfiS 5.47 209 189 12 5.03 166 10.70 QflQ 9 4.73 139 3 ...... 13 98 19 4.58 125 May 10 5 7 13.65 1,480 12 p.m __ __ . 4.32 102 10.78 12m 9 18 667 4.52 120 May 11 6.33 299 3 5.10 172 4. 7.60 448 6 6.58 327 6 a.m. __ ... 4.07 80 5 -- 811 9 7.78 471 12m 3.93 69 6 - n oo 1,020 9.05 648 6 p.m ...... 3.85 62 1,170 12.30 1,200 7- - 13.50 1,440 12 10.88 940 6. 14.72 1,710 8 17.45 15.12 1,800 9 18.95 May 24 10.. . ------14.30 1,620 10 20.55 3,420 9 gg 7O Q 12 12.50 1,240 11 21.08 3,640 01 ft 12 21.20 3,700 8 13.46 June 5 10 i o 79 10.40 859 May If 12m.. ------12.84 1,310 4 . . ------9.45 708 20.15 3,260 10.60 892 8 ------10.63 897 4 a.m. __ _. 17.90 2,530 8.63 588 10. 9.95 787 7 -- - 13.90 1,530 9 C DO 354 8.52 573 9 9.85 771 222 6.14 278 11 . 8.83 6 5.18 180 12m 8.35 549 May 25 4.60 127 2p.m _- ..... 8.70 598 4.77 142 12 - . 4.73 139 1...... 8.13 518 4 40 109 11 8.65 591 92 June 6 12 . 12 4.08 81 4.77 142 6------6.45 312 8-. ------6.72 342 10.07 806 3 O7 28 10- . 6.47 315 2 9 74 12m-.- 5.83 245 4...... 715 May 31 4.87 151 6- ...... 8.85 619 3.35 27 4.43 112 9 .--- .--- 8.63 588 5 - 5.80 242 12..-- -- 4.12 85

656087 O 62- -11 B154 FLOODS OF 1957

106. NORTH BOSQTJE RIVER NEAR CLIFTON, TEX. Location. Lat 31°47'10", long 97°34'00", near left bank on downstream side of left pier of bridge on State Highway 215, 0.5 mile northeast of Clifton, Bosque County, and 2.9 miles downstream from Meridian Creek. Drainage area. 988 sq mi. Gage-height record. Water-stage recorder graph Apr. 1; graph drawn on basis of floodmarks and staff-gage readings made at least twice daily Apr. 27 and Apr. 29 to June 30 at discontinued gage site 1.1 miles upstream at datum 17.02 ft higher. Datum of gage is 605.43 ft above mean sea level datum of 1929, supplementary adjustment of 1942. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Discharge estimated Apr. 2-26, 28, on basis of occasional staff-gage readings, one measurement of discharge, records of weather, and records for nearby stations. Maxima. April-June 1957: Discharge, 37,400 cfs 1 p.m. Apr. 27 (gage height, 22.48 ft at staff gage site; 32.2 ft at recorder site). 1923 to March 1957: Discharge, 39,000 cfs Apr. 22, 1945 (gage height, 23.2 ft, from floodmark at staff gage site). Maximum stage known since at least 1887, about 25 ft at staff gage site and about 35 ft at recorder site May 9, 1922; information from local resident. Remarks. Recording gage destroyed by flood Apr. 27, 1957. Flow from 45.4 sq mi above station partly controlled by 13 floodwater detention reservoirs with total combined capacity of 15,150 acre-ft below the crests of flood spillways. Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 __ . 806 730 285 11 - 1 1,910 151 21 12,000 680 74 2 ...... 240 608 456 12 4 3,630 133 22 4,000 572 83 3. ... 70 12, 500 1,190 13 3 16, 300 133 23 18, 000 1,450 68 4. ... 30 9,170 1,150 14 2 3,480 129 24 14, 000 3,580 66 5 _ .... 20 1,340 830 15 1 990 117 25 5,500 830 89 6 10 780 375 16- 1 730 98 26 9,200 3,030 86 7- __ .. 9 554 306 17. - 1 590 95 27- 23,500 967 68 8 7 462 231 1C 100 10, 000 86 28 3,400 780 53 9...... 5 687 202 19. . 5,000 2,210 83 29 3,980 462 48 10 3 781 166 20- 11, 000 880 83 SO ­ 1,280 382 41 SI. .... 326

Monthly mean d ischarge, in cubic feet per 3,739 2,626 232 Runoff, "in acre-ft et 222, 500 161, 400 13, 830

107. BRAZOS RIVER AT WACO, TEX. Location. Lat 31°33'40", long 97°07'45", on right bank at downstream side of pier of Washington Avenue Bridge in Waco, McLennan County, 2% miles downstream from Bosque River, and at mile 404. Drainage area. Approximately 28,500 sq mi, of which 9,240 sq mi is probably noncontributing. Gage-height record. Water-stage recorder graph except Apr. 1-12, for which graph was drawn on basis of gage readings furnished by the U.S. Weather Bureau. Datum of gage is 356.80 ft above mean sea level datum of 1929, supplementary adjustment of 1942. Discharge record. Stage-discharge relation denned by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 101,000 cfs 10 a.m. Apr. 20 (gage height, 32.33 ft). TEXAS AND ADJACENT STATES B155

1898 to March 1957: Discharge, 246,000 cfs Sept. 27, 1936 (gage height, 40.90 ft; levee on left bank was overtopped and broken by flood). Maximum stage 1854-97, 34.6 ft May 28, 1885. A stage of 39.7 ft was reached Dec. 3, 1913, when levee on left bank was broken by flood; information from U.S. Weather Bureau. Remarks. Flow largely regulated by Possum Kingdom and Whitney Reservoirs on Brazos River, several small reservoirs in Clear Fork and other basins (combined capacity, 221,800 acre-ft), and Lake Waco on Bosque River (capacity, 22,000 acre-ft); total combined capacity of all reservoirs, about 2,986,000 acre-ft, of which 1,630,500 acre-ft in Whitney Reservoir is for flood control.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1. ... 2,080 18, 700 54,800 11..... 1,680 35,300 37,800 21 8,460 38,200 39,200 2...... 1,900 23,800 39, 700 12 1,130 49,000 35, 300 22..... 6,570 36,200 39, 200 3 2,380 31, 100 36, 900 13 1,160 65,500 35,200 23..... 39,900 39,000 38,500 4...... 3,100 32,400 39, 900 14- 444 39, 100 27, 800 24 37,400 46,300 39,200 5_..____ 1,930 17,400 40,500 15..... 225 11,500 29,500 25 29,300 41,300 39,200 6 _ 365 23,100 38,500 16 1,310 18,200 35,000 26 10, 200 45,300 40,500 7 _ 320 25, 200 41,200 17 1,310 25, 200 37, 200 27 50,300 51,100 39,700 8 182 24, 900 40,200 18 736 40,900 39,200 28 22,700 56,000 34,700 9...... 265 26, 700 39,300 19..... 1,630 39,100 35,900 29 21,200 54,000 22,400 10 1,230 27, 800 38, 900 20 48, 000 39,300 38,700 30 13,500 52,500 20,100 31..... 52,300

Monthly mean discharge in cubic feet per 10,360 36,340 37,140 Runoff, in thousands of acre-feet 616.7 2,234 2,210

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April IS April 21 Con. April 84 Con. 5.30 610 12.06 7,110 21.00 1 0 QO 5...... 20.64 27,600 April 19 13.80 10,000 8... 19.16 22,100 5---. _ ...... 13.08 8,590 11 18.24 19,200 5 a.m _ ...... 5.00 420 8.. .. 12.34 7,420 12m.-.. _ 18.06 18,700 9...... 5.47 729 12 11.84 6,740 20.29 27,100 5.46 722 32,800 5.52 7fU 5 44,400 5. . .. 5.69 883 Q 27.50 66,600 7...... 6.15 1,230 11.11 5,880 11. 28.62 73,400 8...... 7.20 1.880 8 ..... 12.54 7,780 12 . 28.68 73,800 ^...... 8.50 3,000 12.07 7,130 10...... 10.90 11.71 6,690 April K 12 - 14.80 12,300 8 ...... U v> 6,050 12 10.44 5,010 27.68 67,000 April 20 ^...... 24.70 49,600 6 21.69 35,200 19.00 24,600 10.20 4,670 8 20.26 29,400 6...... 23.00 41,000 5 _ .... 4,670 10 19.50 26,500 8 ...... 29.50 80,200 6...... 10.60 5,250 12m. 18.71 23,600 9 ...... 31.30 94,200 7 ...... - 12.70 8,070 16.80 17,700 10...... 32.33 101, 000 8 ...... 12, 700 15.02 12,800 11 32.30 101,000 9 ...... 17.90 21,000 12 14.00 10,400 ]2m. __ .... 31.40 94,900 10...... 21.50 34,500 28.70 74,500 11 24.00 46,100 April 26 46,600 26.00 57,200 13 fift 8,780 6...... 21.30 33, 800 27.85 68,500 12m _ ...... 12.09 7,160 8 ...... 19.10 t)K flAfl 2 .... OS Ofl 75, 700 11.90 6,840 12--...-...... 15.30 4...... 90 fiO 80, 900 4 .... 11.80 6,840 6...... 29.10 75, 700 T...... 11.34 6,080 April HI 8 ...... 27.65 65,200 8 12.25 7,440 10... 24.10 43, 300 10 ------17.60 20,600 13.25 8,920 12 34,600 12 36,600 4...... 13.10 8,630 7 11.96 fi QAfl April $4 April 27 8...... 11.83 6.720 1 a.m __ .... 21.70 32.200 2a.m...... 23.70 45,600 B156 FLOODS OF 1957 i Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 ' Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 27 Con. May 4 Con. May 17 8 a.m _____ 25.25 54, 400 8 a.m ...... 20.96 32,500 4 a.m __ .... 18.51 23, 300 10...... 25.45 55, 400 12m...... 22.10 37,200 8 18.71 24,000 11. .. 25.45 55, 400 2p.m__. . 22.37 38, 400 12m___ 18.74 24, 100 12m ..... 25.38 54, 800 5 .. 21.82 36, 100 4p.m...... 19.12 25,400 4 p.m...... 24.86 51, 900 7...... 20.20 29,600 11 20.25 29, 800 6...... 24.49 50,000 10 17.70 20,600 12...... 21.49 34,500 10...... 24.09 48, 000 12_ 16.76 17,900 12...... 23.73 46,200 May 18 May 10 April 28 2 a.m _ ...... 22.57 12 p.m.._ _ 19.53 27,200 6_...... 21.38 34, 100 3 a.m ...... 22.73 41, 100 11. 5 _ . ___ ... 21.80 37,200 May 11 12m-__._ _ . 22.34 38,200 7...... 18.30 24, 000 4 p.m___ ..... 23.83 45, 300 12m _ ..... 13.92 11, 600 12 m_. 19.71 27,800 7 ...... 24.46 48,900 2 p.m. __ . 13.27 10, 100 1 p.m __ _ . 19.73 27,900 4...... 10 . 24.14 47, 300 14.67 13, 100 4...... 20.05 2Q 000 12 6...... 16.70 18, 500 5...... 20.53 30,800 7...... 17.12 19, 800 8...... 24.70 50,600 May 19 8...... 17.07 19, 600 12...... 28.68 11 ...... i f^ fiQ 75,000 12...... 5 a.m ...... 45,000 16.18 17, 100 May 12 ^o, OU 9...... 22.37 38,400 2...... 30.30 91 7Q 3...... 30.50 88, 600 3p.m. _.__ ... 21.67 35,500 5 a.m __ .... 19.20 27, 100 4 ...... 30.55 89,000 8 21.78 36,000 20.74 5...... 30.25 12___ _ ... 22.15 37, 400 10...... 21.29 35, 200 7 ...... 28.30 72, 100 11. __ . _ . 21.35 35, 500 10 12m______... 20.70 33,000 20 64 31, 300 3 p.m ..... 15.83 16, 100 2 p.m__ ...... 19.40 26, 400 12p.m___--- 22.12 37,300 8,140 3 ...... 19.08 25, 300 12 ___ .. . 13.22 10,000 4...... 19 00 oc fifin 5. 19.11 April 30 8_ ...... - 20.07 29, 100 12 m__. _._.__ 38,400 9...... 20.52 30,800 2p.m______- 22.44 38,600 2 a.m ...... 13.37 10, 400 12...... 22.50 oq oo 41, 500 13.40 10,400 12m__... .. 12... - 22.97 41, 300 6 p.m - H 4nn 10...... 15.87 16,000 22 58 12...... 16.00 16, 300 3 ...... 99 .19 OO Rf)f) 99 R7 40, 900 6. .... 24.18 47, 500 4______May 1 8 25.30 53,600 7 23.22 42,900 12 m__...... 28.33 72,300 12m______24.90 51,600 29.25 79,200 3p.m_____ 25.15 52, 800 11. .. . 16,00 16, 300 4 ...... 29.66 82, 700 4______25.14 52, 800 6...... 29.90 84,400 6 24.20 47,600 6p.m-_ ...... 17.60 20,600 8 .. 30.00 85,100 12 23.37 43, 200 23, 100 9 ..... 29.85 84,000 12 18.70 24, 500 28.64 74,700 May 2 May 14 22.68 40, 100 12m_____--.- 22.51 39,400 6 a.m _ .. 18.95 24, 800 26.33 oq «n 44 200 8 18.95 24, 800 12m__ ... O4 CAfl 23 34 43, 000 12m- ___ 18.60 23, 600 16.84 18, 100 g 23.00 6 p.m,__ ..... 18.47 23, 100 6 .... 16.45 17,000 1 9 oq fifl 12 __ 18.35 7 _____ .... 12_ ... 18,900 May S May 15 12m.______-- 23.79 45, 100 4 a.m...... 18.29 22, 500 9.1 19 47, 200 10 18.48 23, 200 11... AQ Afifi 12m...... 18.96 24, 9CO 12 m_ 1O QO 8 Q7ft 12_____-___-._ 49, 800 1 p.m___ ..... 19.16 OK fififi 12.46 8 1 Rft 6...... 23.80 g 1O R7 S oon May 27 7.. _ -._.... 24.09 47 000 12 i ^ inn 8. _..... 24.15 47. 400 24 34 9. . . 23.95 46 400 24.96 10 23.54 44, 900 12 25.06 52, 400 12 22.40 qo Kfifi 6 a.m ...... 17.16 19,700 May 4 8. .... 16.71 17, 700 10...... 16.66 17,600 25.96 57,600 2 a.m ____ _ 21.50 34, 900 16.70 17, 700 12 m__. ______25.78 56,600 4__ _ ._ 21.05 32, 800 17.40 10 7fifi 25.85 57, 000 5_ 20.94 32, 400 12 __ ...... 18.03 21. 700 12 25.57 55,600 TEXAS AND ADJACENT STATES B157

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May id May SI June 1 Con. 12 m...... 25.26 53,900 12m-.. 24.95 51,800 12. .. 25.30 53,600 12p.m.._ 25.14 52,800 25.22 53,200 12 . 25.52 54,700 June % 25.27 53,400 May SO June 1 12m- . 21.37 36,700 25.64 55,300 20.24 33,200 12m- 25.14 52, 800 12m______25.62 55,200 6 20.13 32,700 12p.m__ -_ 24.90 51,600 25.47 54,400 12 20.38 33,700

108. LJEON RIVER NEAR HASSE, TEX. Location. Lat 31°57', long 98°28', on left bank at downstream side of bridge on U.S. Highways 67 and 377, 800 ft upstream from Gulf, Colorado and Santa Fe Railway bridge, 0.4 mile upstream from Walnut Creek, 2.1 miles northeast of. Hasse, Comanche County, and 2.2 miles downstream from Copperas Creek. Drainage area. 1,242 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 1,115.01 ft above mean sea level datum of 1929, Fort Worth supplementary adjust­ ment of 1942. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 21,200 cfs 4 a.m. Apr. 27 (gage height, 18.38ft). 1939 to March 1957: Discharge, 38,500 cfs May 24, 1952 (gage height, 21.49ft). Maximum stage known since at least 1858, about 27 ft in May 1908; infor­ mation from local resident. At location about 2% miles upstream, flood of May 1908 was 9.1 ft higher than that of May 1952 according to floodmarks pointed out by local resident.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 0.6 805 732 11 0 1,290 141 21 7.4 1,600 60 2 _ .6 434 727 12 0 2,680 134 22 2.6 869 47 3 __ 1.6 315 739 13 0 5,870 213 23 164 756 40 4_ ___ .9 270 429 14 0 8,490 189 24 484 6,050 36 5 ... . .7 819 335 15 0 5, 380 153 25 298 6,260 46 6...... 4 906 335 16 - .1 3,340 104 26 858 14, 100 54 7 .1 849 300 17 .4 2,260 81 27- 12, 500 12, 800 36 8 , 1 510 255 18 .6 5,830 68 28 4,210 6,790 31 9 .3 286 210 19- 15 7,150 57 29 1,870 4,430 26 10 0 609 171 20._... 48 3,460 77 30 1,220 2,330 23 31 1,170

Monthly mean d ischarge, in cubic feet per 723 3,507 95 Runoff, in acre-f 43, 010 215, 600 11,600 B158 FLOODS OF 1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 22 May 1 Con. May 16 12p.m.. _ 3.13 1.8 7 5fi 760 10 on 3 ocn 6.62 609 2,770 April 23 12 6.09 529 May 17 5.8 9---.--.- . .. 3.28 6.2 2 eon 12m...... 3.79 43 4 89 OOrt 1 9 QQ 2 9AO 4p.m...... 4.63 252 12 17 7...... 4.96 335 6 - 12 04 1,970 11...... 6.29 557 10 H 79 1,770 12..--..-..... 6.46 584 4.73 oon 1 9 1 9 99 12m...... 4.64 255 April %4 4.61 246 7...... 4.65 258 2a.m.. _ . ... 6.54 596 4 86 0-|9 1 o 09 4...... 6.43 579 12...... 438 13.49 3 740 8.... 5.90 502 6 ...... 13.42 3,620 12m...... o.60 456 May 10 g 4 030 4 p.m... _ . 5.47 433 6,760 10...... 5.41 422 6.05 523 1 c 91 7,530 12...... 5.37 415 8 .... . 6.21 545 4 . 1 c 9Q 7,730 12 m...... 6.35 566 7. . ------15.27 7,680 April 25 2p.m...... 6.49 588 g 7,880 6 . .. _ . 7.04 676 15.59 8,670 4 a.m.._ ...... 5.24 391 19 8 OO 874 12 m...... OflO 12p.m...... 4.32 1 fiQ 15.59 8,670 April 26 8.96 1,000 8...... 9.46 1,100 g 15.26 7,660 12m...... 4.02 79 9.75 ic 19 7 9Qn 2 p.m...... 3.99 73 10.20 1,240 14.95 3 ...... 4.21 126 7...... 11.63 1,720 S oon 4...... 7.70 784 11.66 1,740 1 9 14.20 5,140 5...... 10.30 1,260 12...... 11.74 7 ...... 11.95 8...... 19 07 2 OCA 10 12.31 2,190 11 13.20 3,280 11.89 1,870 12 m.. - 10 91 3 qnn 12...... 14.90 6,760 6 12.63 2,540 19 07 2,250 9 ...... 13.15 3,210 April 27 11 13.23 3,320 12 m...... 13.21 3,300 2 a.m __ . .. 17.60 17, 300 2 p.m...... 13.12 3,170 12.01 1 ncn 3 18.22 20, 400 9 2,470 4 ...... 18.38 21,200 12 ...... 2,370 9 75 1 i en 5 - _ 20 900 12m...... May 13 12-...... 14.73 6,330 8 no 1 a.m____._ 12.55 2,440 8.12 855 April 28 5 12.86 2,820 7.73 789 10------14.07 4,850 12 . 616 6 a.m __ .... 14.25 5,250 5,320 12m..... 13.71 4,140 14.47 5,730 May 23 13.11 3,150 15.54 5.36 41°. 12...... 12.37 2,250 9______.___ 386 12-...... - 16.20 10, 800 6.10 530 April 29 2... __-_ -_ 7.50 750 3 8.43 908 7 a.m ...... 11.95 1,910 4 9 Q4 12m. __ .... 12.04 1,970 10.37 1,280 4 p.m.. .. _ 11.84 , 1, 840 16.14 10, 600 7 ~~ 9.62 1,130 12 10.86 1,410 15.80 g 9 34 1,070 9...... 15.46 8,240 10. 9.41 1,090 April SO 12 m...... 15.28 7,710 12 . - 10.07 1,210 15.30 7,760 8 a.m ____ _ 9.61 1,130 6_ ... 15.30 7,760 10 . 9.50 1,100 9_...... 7,500 12 m...... 9.56 1,120 12__. ______7,120 6 1O CA 4 p.m...... 10.22 1,240 9 ... 5,990 7. . 10.40 1,280 1C -\A 9 ... 10.31 1,260 May 15 7,420 12 . 9.91 1,180 4 . 15.07 7,170 14.63 6,110 7 ------15.50 8,370 May 1 12 m_...... 14.26 5,270 9 . 15.65 8,880 6 p.m 13.92 4,540 10. 15.66 8,910 6 a.m ____ . 8.92 996 12.. ______13.66 4.050 12... .__.__ 15.61 8.740 TEXAS AND ADJACENT STATES B159

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May 25 May 26 Con. May 27 Con. 3 a.m...... 15.38 7,990 12 m...... 17.29 15,800 12m___..__._ 16.41 11,600 12m. 14.53 17.74 16.24 11,000 4 p.m^__._- _ 14.25 5,250 4...... 17.97 19,200 4... --_-...-. _ 16.27 11,100 7 . 14.12 4,960 6_...... 16.20 10,800 9...... 14.10 4,920 7-...-....-... 18.11 19,800 10 -- 15.76 9,260 11__...... __ 8...... 18.10 12 -- 12._...... 14.34 5,450 10 ...... 19,400 12_. ______17.88 18,700 May %6 May 27 15.20 7,500 15.32 7,820 12m..- 14.81 6,540 7.... ______15.75 9,220 17.46 16,600 14.64 6,140 9...... 16.25 11,000 8__ ...____.... 16.91 13,800 12.-.-. ------14.38 5,540

109. L.EON RIVER AT GtATESVrLLE, TEX. Location. Lat 31°26'05", long 97°45'35", on right bank just downstream from pier of bridge on U.S. Highway 84 in Gatesville, Coryell County, 0.1 mile downstream from Dodds Creek and 5.3 miles upstream from Cottonwood Creek. Drainage area. 2,279 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 723.85 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments below 18,000 cfs. Maxima. April-June 1957: Discharge, 27,100 cfs 10 a.m. May 13 (gage height, 31.30ft). 1951 to March 1957: Discharge, 25,300 cfs May 1, 1956 (gage height, 31.06ft). Maximum stage since at least 1854, 35 ft in May 1908. Flood of December 1913 (stage unknown) was second highest; information from local residents.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 565 9,400 6,240 11--... 9.5 2,260 632 21 1,320 6,510 210 2 632 5,300 4,090 12 8.5 5,200 542 22 162 6,860 198 3.. -_ 179 2,960 2,530 13 8.0 17, 200 468 23 2,390 6,330 185 4.- -. 73 2,020 1,950 14 6.6 11, 500 425 24 3,670 3,660 188 5. -. 67 3,010 1,870 15 6.6 10, 000 398 25 4,930 3,520 162 6 45 2,160 1,380 16 6.6 7,150 435 26 3,130 3,270 150 7 . 27 1,190 1,090 17 6.6 6,760 390 27 7,640 4,590 135 8 18 1,370 948 18 6.2 10, 300 411 28 10, 100 6,360 128 9-..-... 13 1,440 841 19 30 8,760 405 29 13, 000 13,300 135 10 11 1,350 747 20. 1,850 7,470 255 30 11, 000 12, 300 130 31 9,440

Monthly mean d ischarge, in cubic feet per 2,030 6,224 922 Runoff, in acre-f 120, 800 382, 700 54,880 B160 FLOODS OF 1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 18 April 26 Con. May it Con. 12 p.m...... 3.15 6.2 22.74 5,590 Si. pi 11 1 a 13.97 2,650 11 64 1 QQft 26.07 7,760 12m_...... 3.15 6.2 S on 12 27.42 9,610 8p.m...... 3.16 6.6 6_ ...... 1,290 9 __ ...... 3.73 57 7...... 11.00 1,810 May IS 10...... 4.33 178 8_ ...... 37 50 3 74fi 12. __ ..... 4.70 262 9 5,100 27.94 10,600 10 ...... 4.---.------. 29.86 16,600 12 ______24.26 5 30.04 17,600 4.22 150 7 30.09 17,900 6...... 4.38 ion April 27 10 31.30 97 inn 7 ...... 6.53 711 25.18 12m. __ ... 30.60 21,200 8...... 8.11 1,060 4...... ___ 25.41 7,120 29.97 17,200 9...... 9.40 1,380 6___ ...... 26.22 7,920 4__ .__..__. 29.86 16,600 12m...... 12.36 2,190 8. _-.-.-... 27.20 9,260 6_ ... 29.80 16, 300 3p.m...... 14.42 2,790 10 27.48 9 79/1 12 29.05 13,400 6...... 15.40 12m...... 27.17 9 91fi 8...... 15.79 3,200 24.84 12...... 15.51 3,110 1C...... 24. C 9 6,190 12...... 24.22 6,270 12 m__ ...---. 28.25 11,300 April SI 27.83 10,400 4 a.m ..... 13.88 2,620 12 10,500 8... ______10.80 1,760 25.81 7 490 12m_.._ _ . 7.74 965 27.28 May 15 4 p.m. 5.85 542 28.97 28.02 10,700 8...... 5.08 350 9 10 fiflf\ 27.82 10,300 12.. ..__..._. 4.72 260 12 29.42 14 700 26.80 8,650 April %% April 29 May 16 12m_...... 4.25 142 29.22 14,000 12m..__ 25.06 6,840 12 p.m...... 4.08 105 8 ._._.... 28.93 13, ICO 24.57 6,490 28.88 19 Qfifi 12 24.42 6,390 28.83 12,800 4a.m. .... 4.04 96 8... .____...__ 28.56 12,100 May 17 5 ... _ .... 4.27 148 11,200 24.67 6,560 6...... 5.97 572 12m--. 7...... 8.02 1 fidfi 26.09 7 7Rfl 8_-_._-._.__, 12.50 2,230 28.00 10,700 9...... 15.75 3,180 12m__. ... 28.08 10,900 May 18 10...... 16.90 3,550 27.97 10 600 26.37 8,090 11. _._.___._.. 16.94 3,560 12-...... 28.70 19 dfin 9 97 flfl 12m_____ .. 16.76 3,500 12m ... . 28.51 2 p.m ..... 17.32 3,680 May 1 13,000 4__ _.______.. 18.01 *12m-.. ______27.05 9 020 S.--._--..._. 18.01 3, 9TO 25.47 7, 170 12---. ------27.72 10,100 7...... 17.05 10 ...... 14.45 2,800 May % 12.. ._....._. 12.50 2,230 24.04 6,160 27.13 9,150 12m___ 22.05 5,340 12m.. 26.81 8,660 19.30 4,350 12p.m___. 26.14 7,830 2a.m___ ..... 10.87 1,780 12__ __ ... _ 16.88 3,540 .._._._.__.._ 10.45 1,660 6...... 10.81 1,760 16.26 9.. ___ ...... 11.75 2,020 9.16 11 - 12.85 2,330 May 27 12m.-_ ... 15.30 3,050 18.16 3,950 18.90 4,210 12m _ ...... 8.08 877 12m- 20.06 4,620 2...... 21.70 5,210 7.80 821 21.88 5,280 3... _ 22.17 5,380 4 ...... 8.50 75 5,690 6...... 22.37 5,450 15.57 3,130 9...... 23.20 5,760 6-. - ... 19.46 4,410 12...... 23.95 6,110 7 _ 22.34 5,440 12m... 24.43 6,400 7:30- 22.67 5,560 12p.m___ .... 25.22 6,970 9 22.39 5,460 24.02 6,150 10 22.54 5,510 3___._ ...... 23.83 6,040 12 23.27 5,790 28.42 11,700 6...... 22 69 5,570 10 29.65 15,600 9 .... _ _ 21.27 5,060 12m.. 29.71 15,900 12m___._... 4,640 24.07 29.07 13, 500 19.45 4.. ______24.10 6,200 6...... 19.14 4,290 6 23.69 5,980 9 4,260 fl_ 21.97 5,310 28.38 11,600 12...... 18.84 4,190 12m.- 20.12 4,640 28.72 12,500 18.62 4,110 6 17.77 3,830 18.07 3,920 8__ 17.40 3,710 26.95 8,880 6...... 16.44 3,400 18.70 4,140 25.82 7,500 TEXAS AND ADJACENT STATES B161

110. BEI/TON RESERVOIR NEAR BEI/TON, TEX. Location. Lat*31007', long 97°28', in intake structure at Belton Darn on Leon River, 1.4 miles upstream from bridge on State Highway 317, 3.6 miles north­ west of Belton, Bell County, 8.2 miles upstream from Nolan Creek, and 16.7 miles upstream from confluence with Lampasas River. Drainage area. 3,499 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is at mean sea level, datum of 1929 (levels by U.S. Army Corps of Engineers). Maxima. April-June 1957: Contents, 870,300 acre-ft 7:30 a.m. June 6 (eleva­ tion, 620.45ft). 1954 to March 1957: Contents, 225,800 acre-ft May 5, 1956 (elevation, 571.00ft). Remarks. Reservoir is formed by a rolled earth-fill dam with a 1,300-ft uncon­ trolled broad-crested spillway in saddle on left bank and a 418-ft dike. Flood- control outlet works consists of a conduit, 22 ft in diameter, controlled by three 7.0-by 22.0-ft electrically driven broome-type gates (elevation of invert 483.0ft). Deliberate impoundment of water began Mar. 8, 1954, and dam completed in December 1954. Reservoir built for flood control and conservation. Capac­ ity, 1,876,700 acre-ft at maximum design water surface (elevation, 656.9 ft), 1,097,600 acre-ft at crest of spillway (elevation, 631.0 ft), and 210,600 acre-ft at top of conservation pool (elevation, 569.0 ft). Records furnished by U.S. Army Corps of Engineers.

Elevation, in feet, and contents, in acre-feet, at 1% p.m. of indicated day, 1957

Al>ril May June Day Elevation Contents Elevation Contents Elevation Contents

1 ...... 140, 800 594. 82 467, 800 619. 16 845,200 2 ...... 558.43 142, 200 595. 72 479, 100 619. 86 858, 700 3...... 558. 66 143, 500 596. 46 488,600 620. 34 868, 100 4 ...... 558. 83 144, 500 596. 78 492, 700 620. 43 869, 900 5. - _ ... . _ . eOA KQ 490, 200 620. 44 870, 100 6_ .. ______558.87 144, 700 596.41 487,900 620. 27 866, 700 7 ...... __....__. 558.93 145, 100 596.19 485,100 619. 87 858,900 8... . _ .____ 145, 100 480,400 619. 36 849, 100 9... - - _..-._____._____.__ 145, 200 478, 600 618. 81 838, 500 10...... 558.96 145, 200 475, 200 618. 17 826, 400 ll...... - 145,300 597. 83 506,300 617. 50 813, 900 12...... 537, 400 617.07 805, 900 13 ______558.96 145, 200 608, 1? 654, 100 617. 14 807,200 14...... _..._...... 558.96 145, 200 610. 8S 698, 200 617. 18 808,000 15 ...... eec QQ 145, 400 ft19 9Q 721, 700 616.85 801, 900 16 _ . __. 559. 01 145, 500 613. 28 738, 600 616. 15 789, 100 17. . 559. 02 145, 600 613. 76 746, 800 615. 40 775, 700 18 _ .__ 145, 600 614. 61 761, 700 614. 61 761, 700 19 560.50 154, 200 615. 46 776, 700 613.83 748,000 20. _ ___ KRA QQ m enn 616. 17 612. 97 733, 200 21 _ __ _ 564.91 181, 900 616 58 797,000 612. 10 718, 500 22...... ice en.n 616. 80 611.20 703, 500 23 229,200 616. 98 804,300 610. 32 689,000 24 578. 06 285, 800 807, 200 609. 38 673, 900 25 C7Q ne ono Ron 617. 02 805,000 608.43 658, 800 26. 582. 20 804, 100 607. 50 644,300 27- . 587. 85 385, 600 616. 99 804,400 606.56 629,900 28 ...... eon 17 d.19 nnn 617. 26 QAQ Rfift 605. 70 616,900 29 . 592.01 617. 47 813, 400 604. 75 602, 700 30 ...... 453, 700 618. 28 828, 500 603. 86 589, 700 31...... fiia 70 838,200 +315, 600 +384, 500 -248, 500 B162 FLOODS OF 1957

111. LEON RIVER NEAR BELTON, TEX. Location. Lat 31°04/ 15", long 97°26'30", on left bank, 1,400 ft upstream from bridge on Farm-to-Market Road 817, about three-quarters of a mile upstream from bridge on U.S. Highway 81, 2 miles east of Belton, Bell County, 3.2 miles downstream from Belton Reservoir, and 5 miles upstream from Nolan Creek. Drainage area. 3,513 sq mi, of which 3,499 sq mi is above Belton Reservoir. Gage-height record. Water-stage recorder graph. Datum of gage is 476.89 ft above mean sea level, datum of 1929 (levels by,U.S. Army Corps of Engineers). Discharge record. Stage-discharge relation defined by current-meter measurements. Maxima. April-June 1957: Discharge, 8,490 cfs from 9 p.m. June 18 to 3 a.m. June 20 (gage height, 9.12 ft). 1923 to March 1957: Discharge, 56,500 cfs Apr. 22, 1945 (gage height, 24.41 ft, before construction of Belton Reservoir), from rating curve extended above 45,000 cfs. Maximum stage known, 25 ft in December 1913. Flood of September 1921 reached a stage of 21 ft; information from local residents. Remarks. Flow regulated by Belton Reservoir.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 6.8 3,650 6,230 ll--__. 3.6 4,310 7,690 21 3.8 4,780 8,440 2--.. _ 5.0 4,370 104 12 3.2 2,040 6,100 22..... 4.1 5,420 8,390 3 5.3 3,640 820 13..... 2.6 189 96 23 207 5,830 8,340 4...... 4.4 2,800 2,610 14 2.4 76 78 24. . 422 5,830 8,340 5 3.4 4,390 2,600 15 2.6 70 3,480 25 36 5,810 8,300 6_. .... 3.4 4,390 3,990 16. . 3.4 1,660 7,340 26..... 28 5,810 8,270 7 . 3.6 4,370 5,420 17 3.4 4,020 7,630 27 87 3,840 8,020 3.0 4,370 6,810 10 3.2 4,880 8,000 28 95 2,150 7,340 9 . ... 2.6 4,350 6,780 19 7.4 4,450 8,490 29-... 679 4,290 7,320 10 3.2 4,350 7,290 20_ 12 2,770 8,440 SO ­ 2,680 6,110 7,300 SI 6,760

Monthly mean c ischarge, in cubic feet per > 144 3,928 6,002 Runoff, in acre-fc et 8,580 241, 500 357, 100

112. SULPHUR CREEK ABOVE LAMPASAS, TEX. [Miscellaneous site] Location. Lat 31°02'17", long 98°11'39", on the Stanley ranch, 1.6 miles southwest of Sulphur Creek bridge on U.S. Highway 183 at Lampasas, Lampasas County. Drainage area. 78.0 sq mi. Maxima. April-June 1957: Discharge, 65,300 cfs May 12, 1957, by slope-area measurement. Remarks. Maximum stage occurred in Lampasas between 10 and 10:30 p.m. May 12, 1957; information from city employees.

113. BURLESON CREEK NEAR LAMPASAS, TEX. [Miscellaneous site] Location. Lat 31°05'02", long 98°11'56", just downstream from crossing on the old Lampasas-Lometa road. Drainage area. 7.42 sq mi. Maxima. April-June 1957: Discharge, 14,300 cfs May 12, 1957, by slope-area measurement. TEXAS AND ADJACENT STATES B163

Remarks. Maximum stage at U.S. Highway 281 bridge occurred between 8 and 9 p.m. May 12, 1957; information from local radio station.

114. SULPHUR CREEK BELOW LAMPASAS, TEX. [Miscellaneous site] Location. Lat 31°04'23", long 98°08'20", just downstream from second Santa Fe Railroad bridge below Lampasas, just upstream from Pecan Branch, and 2.6 miles northeast of Sulphur Creek bridge on U.S. Highway 183 at Lampasas, Lampasas County. Drainage area. 108 sq mi. Maxima. April-June 1957: Discharge, 74,600 cfs May 12, 1957, by slope-area measurement. Remarks. A resident at Gunderland Park 0.3 mile upstream stated that the maximum stage occurred there between 10:30 and 11 p.m. May 12, 1957. This flood reached a stage 4.8 ft higher than the flood of Sept. 27, 1936, at the stone pavilion in Gunderland Park, and 4.8 ft higher than the 1936 flood at the E. J. Noyes home 1 mile downstream from Gunderland Park. Flood of 1873 was 1.5 ft higher than the 1957 flood at the Noyes home.

115. LAMPASAS RIVER AT YOUNGSPORT, TEX. Location. Lat 30°57', long 97°43', on left bank 500 ft upstream from county road bridge (destroyed May 13, 1957) and half a mile southeast of Youngsport, Bell County. Drainage area. 1,242 sq mi. Gage-height record. Water-stage recorder graph except 3 p.m. to 11 p.m. Apr. 24, 7 a.m. Apr. 27 to 1 p.m. Apr. 29, and 7 a.m. May 13 to 1 a.m. May 14, when stage exceeded limits of recording gage. Datum of gage is 633.46 ft above mean sea level, datum of 1929 (levels by U.S. Army Corps of Engineers). Discharge record. Stage-discharge relation denned below 40,000 cfs by current- meter measurements at gage and extended on basis of measurement of maxi­ mum discharge of May 13, 1957, 22 miles downstream. Maxima. April-June 1957: Discharge, 84,000 cfs 11 a.m. May 13 (gage height, 36.40 ft, from floodmark). 1924 to March 1957: Discharge, 53,200 cfs Sept. 28, 1936 (gage height, 33.5 ft, from floodmarks), from rating curve extended above 40,000 cfs. Maximum stage known since 1873, 44.2 ft in September 1873. Flood of Dec. 2, 1913, reached a stage of 33.6 ft; information from local residents.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 _ .... 225 1,680 1,060 11 16 1,020 372 21 268 897 249 2 . 203 885 3,800 12 16 6,890 417 22 288 741 207 3 106 700 1,390 13 15 49, 600 926 23 9,480 643 181 4 . 68 1,040 956 14 15 9,130 390 24 18, 300 569 169 5 __ ... 44 1,110 1,140 15 14 1,750 309 25 5,100 526 157 6 . 31 652 1,340 16 15 1,220 278 26 1,410 2,410 145 7 . 26 517 702 17 15 1,000 258 27 26, 000 823 138 8 . 22 462 571 18 16 3,340 254 28 5,980 1,060 134 fl 20 586 490 19 25 3,170 580 29 5,990 1,030 120 10 17 1,000 428 20 2,610 1,200 377 30 1,540 461 109 31 461

Monthly mean d ischarge, in cubic feet per 2,596 3,115 588 Runoff, in acre-ft>et 154, 500 191, 500 35,000 B164 FLOODS OF 1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 19 April 26 May 18 Con. 12p.m...... 3.11 86 4.36 850 13.33 14,300 12m ___ ... 4.18 685 10 9.30 8,480 April 20 563 12m... 7.32 5,040 9...... 4.90 1,400 5.90 2,680 1 a.m _ ...... 6.20 3,120 10 ... 6.50 3,600 8 - 5.30 6,880 2...... 7.45 5,270 19 10.90 10,900 12. 4.96 1,470 4...... 8.94 7 Qfifi 5 - 8.77 7,630 A -nr ?*7 97 May IS 6...... 7.95 6,170 7...... 6.97 i K nc 16,700 4.81 1,300 9...... _ 5.86 19.10 22, 900 3 11.00 11,000 12m...... 5.04 1,560 6 ...... 28, 600 4. .... 14.40 15,800 3 p.m...... 4.58 1,060 8 ..... 25.40 33, 700 5 ...... 17.30 20,000 6 4.28 774 9 .... . 9fi an 36, 500 6 21.20 26,200 12...... 3.89 4fi1 11 97 f^n 37, 900 7 25.3 33,500 12m. 27.60 38, 100 8 32.5 53, 500 April H 27.54 38,000 9 .... 35.5 73, 400 2...... 26.85 36, 600 10 36.2 81, 400 4 a.m _ ...... 3.73 360 4. .... 23.70 30, 600 11. ___ . _ - 36.40 84,000 12m. __ .... 3.51 6 .. ... 91 1 ^ 26,200 81,400 6p.m.- ...... 3.40 194 8 - 17.90 21,000 73,400 12... .. - ... 3.32 161 10 14.00 15,200 34.70 66, 900 12 10.70 10, 600 3 ... 34.5 65,500 April gg 34.0 62, 000 April 28 9_ 33.6 59,600 3 a.m ...... 3.28 1AK 10 54,500 5 3.57 273 9.00 8,000 49, 300 7 __ ------... 4.59 1,070 4 . 8.00 6,260 12 OQ 7 43, 000 10 __ - ...... 3.72 354 6 ... 7.40 5,180 12m. __ .... 3.43 207 8 - 6 Qfi 4,390 May 14 4 p.m...... 3.41 198 6 Eft 3,600 8. 3.26 138 6.10 2,960 22.10 27, 800 12 ...... 3.19 113 T...... 7 60 4 15.70 17,600 8 - 9.00 8,000 6 .... . 10.90 10, 900 April US 9 - 10,200 8... 8.55 7,250 10 11.25 11,400 10 7.28 4,960 7 a.m __ .... 3.15 99 11 n AK. 11,600 6.73 3,970 8 -- 3.25 134 12 11 52 11,700 6.20 3,120 9 ...... 5.20 1,750 5 O1 2,550 10 7.60 5,540 19 5 an 2,270 n Q7 U CAA 12.50 n AO 11, 600 5 16.10 18, 200 10.82 10, 700 7- ...... 17.13 6 . 9 70 9,120 5.34 1,930 9 17.45 20, 300 9 S en 7,160 5.15 1,690 10 17.09 7.40 5,180 4 CO 1,390 12 14.45 15, 800 6.18 3,090 6 . 5 98 2,790 May 17 April g4 12 2,110 4.41 917 10.50 4. .... 7.86 6,010 May 18 6...... - 6.42 3,470 *, 17 8 .... 5.70 2,400 8 . 4 97 1,480 4.34 850 12m...... 5.05 1,570 4.88 1,380 4.41 917 1 p.m...... 5.02 1,530 4.78 1,270 4.49 994 2 _____ ..... 8.00 6,260 5.03 2 ...... 6.00 2,820 3...... 18.5 21, 900 10 5 no 1,620 3 6.87 4,230 4 . .... 28.0 39, 900 12...... c no 1,530 6.73 3,970 5...... 29.2 5 7.03 4,510 6 _ 29.9 43, 600 8.73 7,570 8. .... 30.3 44,900 9.53 8,850 10 .... 29.5 42,400 4.21 711 10 9.62 8,990 11 ...... 24.0 31, 100 11. 9.52 8,830 12 . ... 20.10 24, 500 May 11 9.22 8,350 April 25 4.07 595 May 19 12m.__ _ 3 QA 511 14.40 3 07 448 8.11 6,460 2 11.15 11, 200 10... _ . 6.70 3,920 4... ___ 7.25 4,910 4...... 10.23 9,920 12 8.30 6,800 8 - 6.30 3,280 6 9.30 5.70 2,400 8 ...... 5,430 5 QK 1,940 10 . ... 6.46 3,540 8 5.13 1,670 12m... .. 5.88 11.10 11, 100 12. - 4.96 1,480 4 p.m... .. 5.22 13.08 May 25 8 __ ...... 4.86 1,360 13.58 14,600 12 ...... 4.62 1.100 6- .. 13.74 14.800 12 n.m... . 3.92 504 TEXAS AND ADJACENT STATES B165

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May 26 May 28 Con. June 2 3.90 490 4.85 1,360 9.25 8,400 7...... 8.75 7,600 12m...... 4.62 1,120 4... _ 9.35 8,560 8. . 9.40 8,640 4 4ft 907 6 8.32 6,840 9...... 9.54 8,860 9...... 4 a*; 765 10 __ . 6.14 3,020 10 8.10 6,440 12 4.18 702 12m...... 5.76 2,480 12m...... 6.04 2,880 5.13 1,670 3 p.m...... 5.30 1,880 May 31 8 ..... 4.78 1,280 4.28 792 10, _ 4.95 1,470 12 . 4.46 965 3.96 533 12 4.68 1,180 May 27 June 1 June 3 6 a.m...... 4.24 756 3.89 482 4.54 1,040 8 4 4ft 907 12m...... 3.96 533 5...... 4.79 1,300 12m.. _ .... 4.23 747 3.93 511 9. .... 4.58 1,080 4.13 668 7 ... 3.96 533 12m. ___ .. 5.34 1,930 12. 4.62 1,120 8 4.16 685 5.26 1,820 9...... 5.06 1,580 9...... 4.69 1,190 11 7.92 6,120 5.03 1,550 4.85 1,360 12...... 8.16 6,550 12 4.81 1,310

116. NORTH FORK SAN GABRIEL RIVER NEAR GEORGETOWN, TEX. [Miscellaneous site] Location. Lat 30°39'20", long 97°41'50", half a mile upstream from Middle Fork, \% miles northwest of Georgetown, Williamson County, and 2.2 miles upstream from confluence with South Fork San Gabriel River. Drainage area. 240 sq mi. Maxima. April-June 1957: Discharge, 102,000 cfs, about 5 p.m. Apr. 24, 1957, by slope-area measurement. The greatest flood since at least 1878 occurred in September 192T and was about 3 ft higher than that of April 1957 at site 4 miles upstream; information from local resident.

117. SOUTH FORK SAN GABRIEL RIVER NEAR LEANDER, TEX. [Miscellaneous site] Location. Lat 30°37'05", long 97°51'05", 1 mile downstream from bridge on U.S. Highway 183, 2.6 miles north of Leander, Williamson County, and 13 miles upstream from confluence with North Fork San Gabriel River. Drainage area. 120 sq mi. Maxima. April-June 1957: Discharge, 78,800 pfs 2 p.m. Apr. 24, 1957, by slope-area measurement. Maximum stage known since at least 1869, that of Apr. 24, 1957. Flood of September 1921 reached a stage 6.4 ft lower than that of Apr. 24, 1957, according to floodmarks and to information from local resident, and is second highest stage known.

118. SAN GABRIEL RIVER AT GEORGETOWN, TEX. Location. Lat 30°39'10", long 97°39'20", on left bank 100 ft downstream from Missouri-Kansas-Texas Railroad bridge \}i miles downstream from confluence of North and South Forks, and 1% miles northeast of Georgetown, Williamson County. Drainage area. 415 sq mi. Gage-height record. Water-stage recorder graph, except peak of Apr. 24 when water in well failed to reach outside water level. Peak determined from floodmarks. Datum of gage is 643.24 ft above mean sea level, datum of 1929. B166 FLOODS OF 1957

Discharge record. Stage-discharge relation defined by current-meter measure­ ments below 24,000 cfs and by contracted-opening measurement of peak flow. Maxima. April-June 1957: Discharge, 155,000 cfs 5: 30 p.m. Apr. 24 (gage height, 31.89 ft in gage well, 34.10 ft from floodmarks). 1924-25, 1934 to March 1957: Discharge, 37,500 cfs June 6, 1944 (gage height, 19.49 ft), from rating curve extended above 24,000 cfs on basis of contracted-opening measurement of 155,000 cfs. Maximum stage since at least 1869, 36.1 ft Sept 10, 1921 (discharge, 160,000 cfs by slope-area measurement of peak flow).

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1. ------132 838 1,850 11 6.4 279 445 21..... 118 331 294 2______40 440 2,680 12 6.4 268 2,040 22 627 279 272 3______27 376 1,710 13..-.. 6.4 3,090 950 23..... 5,120 247 238 4... .._. 41 643 1,910 14..... 6.0 744 532 24 -. 24, 100 225 222 5 . 33 695 2,340 15 6.8 414 456 25 2,450 208 205 6___ _ 18 323 1,460 16 8.8 610 404 26 564 617 183 7 13 264 852 17 7.7 290 366 27 4,190 1,360 170 8. .-. 11 235 801 18..... 6.4 1,270 340 28... .. 3,440 467 161 9 8.2 761 564 19 9.4 784 543 29 2,040 302 131 10__..__ 7.2 580 489 20. .... 907 409 335 20 1,010 238 135 31 312

Monthly mean r iscliarge, in cubic feet per 1,499 577 769 Runoff, in acre-fc et 89, 180 35, 500 45, 770

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April tZ April M April 88 Con. 12p.m...... 6.66 5,160 6.90 5,590 4 _ _ ___ 5.43 3,140 9.00 9,820 6. -. 4 93 8 11.06 14,500 6 a.m.., _.. 2.26 120 8 ______4.54 1,790 9______10.74 13,800 9 2.10 100 12 m._ . ... 9 52 11,000 11- 2.34 10, 200 11:30--- ... 2.53 161 12...... 12 8.56 8,880 12m__ 6.50 1 p.m...... 12. 20 13, 700 April m April 29 2...... 13.70 17, 000 2:30. _..-..... 14. 00 0 Oft £Q7 6.36 4,650 4. _...... 13.20 15, 800 12m...... 507 4______.______5.39 3,080 G ...... 10. 95 12, 000 3.11 445 6 _ -- _ 4.86 2, 250 10.66 11 ...... S...... 4.54 1,790 8 - 9.20 8,680 12... ______832 10 _.___.. 4.32 1,5!0 9--______.-_ 6. 10 4.17 1,340 10______. - 5.30 2,380 3.91 1,070 12...-.-.-.. 4.53 8 ...... 3.74 912 1 a.m... . . 7.56 6, 880 12______-___-_ 3.62 SOS April Z^ 7.14 6,060 3.96 4 ______8.14 May 13 8______. 3.57 8 00 9 440 12 in-- 3. 3f, 461 8,840 2.79 290 2 p. ill .. . . 3. 26 409 10___. ______5, 200 2:30____._____ 3.37 12m...._ __ "> 48 3______in. oo 10, 20U 2, 270 2.68 251 3:30 ---... 13.00 18. 100 4______. ______4.51 1,760 ^...... 3.17 478 4:1)0 -- 19.00 36, 300 6 4.28 1,460 10 3.45 666 4:30__ 25.00 8______1.26C 11 5.75 3,660 5:00__ . 30.75 108,000 12______1,000 12m... 7.15 6,070 5:30___. ______34. 10 155,000 9.08 9,990 0:00 _ .- . 32. 10 April £8 4 8.19 8, 140 28. 80 7.82 7,400 8______20. IS 71, 200 8.0 7 ------5.70 3,580 9 _. 21.60 47, 400 8______3.54 744 8 5.16 2,710 10...... 18.04 12 m 10 4.58 1,860 12. . 12.40 17. 800 5 D.111-. -_. - 3.39 631 12 4.22 1,400 TEXAS AND ADJACENT STATES B167

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May 14 June 1 June 4 Con. 3.99 1,150 2.92 353 4.12 1,290 4...- ...... 3.84 1,000 12m...... 2.81 302 9... ,. 3.98 1,140 8--...-..-.-.. 3.59 776 272 19 3.84 i nnn 12m.. 3.42 645 6...... 327 3.33 584 7...... _ ... 3.24 526 8 ...... 3.27 538 8 ...... 1,260 12 ___ ...... 3.20 495 9...... 7,120 3.72 10 10.07 12,200 11 3.64 816 May 17 12 9.58 11, 100 3.86 1,020 5.69 3,560 12 p.m...... 2.71 4.96 6 6.61 5,100 May 18 9.42 10, 700 7 - 6.01 4,090 2_...... 8.96 9,730 9 6.87 5,550 2.68 251 4 6.10 4,220 10 6.54 4,980 10 ... 2.81 306 6 5.00 2,470 5.37 3,050 12m...... 2.86 327 8 4.54 1,810 2.88 335 10 1,420 2...... 5.80 3,830 12m . . _ _. 4.04 1,200 5 ...... 5. 16 2,710 3.75 921 4.74 2,090 8. 4.73 6 ...... 4.10 1,260 6 4.35 1,560 9...... 4.82 2,200 9...... 3.77 939 7 4.40 1,620 12 ...... 4.39 1,600 12 3.64 824 9 4.31 1,500 4.12 1,290 May 19 3.95 1,110 8 3.85 1,010 4a.m___ ...... 3.91 1,070 3.58 776 12 3.77 939 8 ...... 3.62 808 3...... 3.69 867 12m...... 3.44 659 4 3.75 921 4p.m...... 3.33 577 6. ... 3.83 993 12. 3.21 501 3.80 966 3.06 419 8 ... 4.44 1,660 May 26 9 4.74 2,090 11 4.60 1,890 12p.m...... 2.88 331 12m .. _ ... 5.40 3,100 3.03 404 5.00 2,470 3.03 404 May 27 8 4.23 1,410 4 - 3.62 808 9 4.25 1,430 4.80 2,170 3 a.m.___ ..... 2.83 310 10 4.36 1,560 6 9.29 10, 500 6 - 2.82 306 11 2,020 8.35 8,460 7 5.67 3,530 12. 2,580 7.65 7,060 8 ...... 5 97 10 5.86 9...... 5 GO 3,780 4.83 2,230 10 . 5 AO 2 500 11... _ . _ .. 5.36 1,930 12m...... 5.13 2,660 4. . 4.32 1,510 4.37 1,590 6 4.16 1,330 4.32 1,520 4 ...... 3.98 1,140 4.48 1,730 4.04 1,200 8 3.56 752 8...... 5.04 2,530 6 3.87 1,030 12...... 3.33 584 9_ 5.72 3,610 8 - 3.77 939 11 ___ . __ .. 5.22 2,810 12m... 3.64 824 May 31 2,620 3.51 712 4.91 2,340 12 3.39 624 12p.m...... 3.08 429 5...... 4.34 1,540

119. LITTLE RIVER AT CAMERCHST, TEX.

Location. Lat 30°50', long 96°57', on right bank at site of old McCowan Bridge, 2,020 ft upstream from bridge on U.S. Highway 77, 1 mile upstream from Gulf, Colorado and Santa Fe railway bridge, and 2 miles southeast of Cameron, Milam County. Drainage area. 7,000 sq mi. Gage-height record. Water-stage recorder graph except 1 p.m. May 3 to 7 p.m. May 9, for which graph was constructed on basis of gage heights furnished by U.S. Army Corps of Engineers. Datu'm of gage is 281.89 ft above mean sea level (levels by U.S. Army Corps of Engineers). B168 FLOODS OF 1957

Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 116,000 cfs 1 p.m. Apr. 20 (gage height, 39.56 ft). 1916 to March 1957: Discharge, 647,000 cfs Sept. 10, 1921 (gage height, 53.2 ft, from floodmark), from rating curve extended above 110,000 cfs on basis of slope-area measurement of peak flow. Maximum stage known, that of Sept. 10, 1921; flood of 1852 reached about the same stage. Flood of December 1913 reached a stage of 49.0 ft. Stages based on information from local resident. Remarks. Some regulation by Belton Reservoir on Leon River.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 936 22, 100 7,660 11 . 30 6,870 8,030 21 483 7,830 10, 800 2.. . 1,360 9,760 15,000 12 33 5,830 8,660 22- 2,260 5,480 10,600 3... 573 7,080 21, 700 13..... 28 7,950 17,900 23..... 3,550 5,900 10,300 4 432 6,460 21,300 14. . 24 17, 100 24, 300 24 14, 800 6,440 10,000 5 258 4.920 21, 700 15 26 33, 700 7,210 25 79,600 6,590 9,850 6...... 190 5,740 16,500 16 33 20, 400 2,550 26. 51, 000 7,230 9,750 7...... 126 5,850 11, 300 17 33 5,060 6,530 27 29,600 11,200 9,650 8.. 79 5,650 7.54C 18 44 4.620 8,850 28 40,000 9,860 9,490 9...... 51 5,230 7,920 19 38 6,610 9,300 29 48,800 5,110 8,820 10. . . 36 7,190 8,160 20 27 9,610 10, 200 30 40,100 4,130 8,210 31..... 5,700

Monthly mean d ischarge, in cubic feet per s 10, 480 8,813 11,330 Runoff, in acre-f<>et 623, 900 541,900 673, 900

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 20 April 24 Con. April 29 Con. 12 p.m...... 2.79 35 31.24 18, 900 12m- .. 35.57 48, 600 10 32.64 22, 600 35.69 50, 400 April 21 12...... 34.21 29, 500 12 35.97 54, 600 5 a.m_ ^ ... 2.88 43 April SO 6...... 4.42 318 8-...... 6.00 712 46, 900 35.64 49, 600 10. 7.17 1,030 6 ...... 61,000 12m__ 34.94 39, 100 12m 8.76 1,500 10. . -.. 38.61 97, 200 34.32 30, 500 4 p.m 11.33 2,380 39. 52 115, 000 12...... 33.85 >7, 500 9_. 13.10 3,090 39.56 116, 000 12. 13.45 3,230 6...... 38.19 88, 800 May 1 12 . . 36.70 65, 500 33.36 25, 300 12m ...... 32.62 22, 600 13.22 3,140 31.38 19, 200 12 m...... 11.12 2.300 58, 300 12...... 28.82 14, 700 9.08 1,590 35.76 51, 400 12..- - 7.44 1,100 34.88 38,200 May 2 A ~ »'7 07 25.88 11, 200 12m_. _ ... 23.38 8,900 7.10 1,000 33. 81 27, 300 21.98 7,840 6... ______7.41 1,090 25, 900 12 _ 21.32 7,370 12 m_. 11.00 2,250 12 .. . 33.64 26, 500 2 p.m. . . 14.45 3,650 May 12 6 .-. 19.37 6,120 12____ .... 22.64 8,330 12 p.m.. __ _ 18.62 5,690 12m. 35.30 44, 500 April 2i 35.28 44, 200 May IS 12 35.33 45, 000 19.75 6,350 12m... 28.00 April 29 21 m. _ ...... 21.65 7,600 4 p.m.... 29.02 15. 000 6 a.m...... 35.41 46, 200 12 p.m. _ ... 25.85 11, 200 TEXAS AND ADJACENT STATES B169

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May 14 May tl June % - 12m...... 29.76 16, 200 24.08 9,470 28.79 14, 700 32.47 22, 100 12m_ . .... 21.90 7,780 29.59 15. 900 12...... 33.18 24, 600 19.50 6,200 8 30.68 17, 800 12 .. 18.63 5,690 12...... 31.58 19,600 May 15 May 25 JuneS 33.63 26,500 8 ...... 34.89 38, 400 20.05 6,530 32.56 22, 400 10...... 35.00 40, 000 10 32.76 23. 100 12m...... 34.98 39,700 12m...... 3S.71 22, 900 34.55 33, 400 32.29 21.500 12-...-.-..... 34.00 28, 200 20.03 6,520 12-. . 31.61 19, 700 8 ...... 20.11 6,570 May 16 12m. _...... 20.13 6,580 20.38 6,750 33.15 24, 500 4 ...... 20.92 7,100 22.41 8,160 12 m.-_ ...... 32.41 21, 900 12...... 24.48 9,830 30.74 17, 900 8-...... 27.52 13, 000 May 27 12...... 23.47 8,980 12m-. 22.81 8,460 26.18 11,500 22.88 8,510 May 17 8._ ..... 26.32 11, 700 8 ..... 23.63 9,100 12 m__ ...... 26.17 11,500 12...... 24.87 10, 200 18.47 5,610 12m. ._._.._. 15.77 4,250 12...... 25.54 10, 800 14.96 3,880 12...... 29.70 16, 100 32.52 22, 200 May 18 25.35 10, 600 10 33.91 27, 700 8...... 25.40 10, 700 12.. __ ...... 34.21 28, 800 12m...... 16.39 4,550 10...... 10, 700 12p.m...... 17.99 5,350 12m. .... 25.24 10,500 24.91 10, 200 May 19 6 ...... 23.73 9,180 34.14 29,000 12 21.14 7,250 12m . 33.22 24,800 8a.m.__...... 18.95 5,870 32.68 22,800 12m...... 19.98 6,490 May 31 8 31.88 20, 400 8 p.m...... 21.89 7,770 12_ __ .-_ 30.12 16, 800 12 .. 32.54 8,260 May SO June 15 23.58 9,060 26.68 12, 300 12m...... 24.49 9,840 8 .... 22.37 8,660 24.88 10, 200 12m...... 20.55 6,860 18.26 5,820 7...... 24.99 10, 300 20.94 7,110 14.92 3,880 9 ...... 24.98 10, 300 8 . 24.50 9,850 8 - 12.80 2,970 12...... 24.78 10, 100 12.. . 26.28 11, 600 12 ...... 11.59 2,510

12O. BRAZOS RIVER NEAR BRYAN, TEX. Location. Lat 30°37', long 96°29', on left bank 2.4 miles downstream from Little Brazos River, 5 miles downstream from Texas and New Orleans Rail­ road bridge, 9 miles southwest of Bryan, Brazos County, and at mile 285. Drainage area. Approximately 38,400 sq mi, of which 9,240 sq mi is probably noncontributing. Gage-height record. Water-stage recorder graph except 8 p.m. Apr. 20 to 3 p.m. Apr. 21, 8 a.m. May 24 to 3 a.m. May 26, 11 a.m. May 26 to 2 p.m. May 27, and 9 a.m. June 9 to 11:30 a.m. June 14, for which gage-height chart was re­ constructed on basis of staff-gage readings made twice daily by U.S. Army Corps of Engineers. Datum of gage is 192.33 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation denned by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 137,000 cfs 10 p.m. Apr. 26 (gage height, 42.08ft). 1925 to March 1957: Gage^height, 46.1 ft May 20, 1930 (discharge not determined). 656087 O 62 12 B170 FLOODS OF 1957

Maximum stage since. 1899, about 54.0 ft in September 1921. Flood of Dec. 5, 1913, reached a stage of about 50 ft, according to information furnished by Texas and New Orleans Railroad Co. and obtained at their bridge 5 miles upstream and according to comparison of maximum stages reached by floods of 1913 and 1921 at gage near College Station 7l/z miles downstream. Remarks. Some regulation by reservoirs above Waco and by Belton Reservoir on Leon River. Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 .... 3,650 88,400 58,000 576 37,700 48, 300 21..... 27, 200 48,600 45,100 2...... 5,190 63,200 62, 303 12..... 560 45,400 47,600 22 42, 100 48,200 47,100 3...... 5,030 46, 100 66, 400 13 1,100 72, 700 47, 000 23 . 30, 800 46, 100 47,900 4... _ 4,190 43, 700 63,300 14..... 1,120 85,200 51, 800 24 53, 100 45,100 48,200 5.. .. 3,280 48, 900 63,600 15 .. 1,170 94, 000 53, 800 25 91,500 47,500 47,500 6...... 3,120 40,200 64,600 16..... 1,080 85, 000 37,400 26 123, 000 51, 000 47,900 7 2,120 32, 100 59, 500 17 844 56, 100 36, 000 27 116, 000 51,200 48,500 8 1,390 32, 800 54,700 18..... 653 36,700 41, 800 28 102, 000 56, 300 48,600 9 898 33,400 51, 100 19 1,190 39,900 45, 000 29 106, 000 59,200 46,300 10. 719 34,900 49,200 20 2,000 46, 800 45,600 30 104,000 58,400 38, 100 31..... 57,200

Monthly mean discharge, in cubic feet per s 27, 850 52,650 50,410 Runoff, in thousands of acre-feet 1,657 3,237 2,999

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 19 April 25 May H 5.02 1,360 34.48 89 OHO 21.22 37, 700 8 _--- 35.85 6 ----- _ 21.21 37,600 April 20 92, 700 7 21.26 37, 800 37.89 97,500 12m.------23.26 43,800 5.02 104, 000 25.75 51,600 12m.- 4 78 1,170 28.23 60,300 4 KO QS9 8 ----- 5.60 1,880 May 13 10 8.60 40.30 12...... 10.70 g 30.16 67,100 124, 000 12 m 32.11 73,900 April 21 41.86 130, 000 33.06 77, 200 41.98 133,000 8 33.74 80,000 14.90 1 Q 7f\A 10. d9 f!8 12 34. 15 81,600 12m-- 18.10 12 May 14 10 21.70 12...... 40 T 600 34.45 82,800 41.84 129, 000 8 - - - 34.68 83,700 April M 6 -- 124, 000 12 m_,_ __ -_ 34.97 84,900 9 ...... 41.21 120,000 12 p.m.-. 36.14 89,600 4 a.m. . 23.00 43,000 115,000 6--__ -_-_ 23.42 44 300 on oo May 15 9 ...... 23.60 103,000 12 m- . 44 600 37.01 93, 500 99 78 42 300 4 1rril &8 37.36 95,100 6------37.53 95,900 12 .- 20.57 35, 700 101, 000 8.- -- 37.51 95, 800 38.62 101,000 12 37.29 94,800 April S3 38.77 102, 000 38.92 103, 000 May 16 12m.- 17.27 26, 200 12 _ 104, 000 17.13 OK ofifi 36.88 93,000 2 - _- 17.14 A nrij 00 8. ----- 36.21 89,900 3 . OA finrt 35.30 86,200 6 18.87 106, 000 33.53 79,100 12 21 04 07 inA on c-i 12 31.35 71, 200 39.65 107,000 April 24 12 39.57 106, 000 May 17 oo 07 29.23 63. 800 51, 400 27.00 56, 000 28.38 91 ^fl 37 ' 900 24.74 48, 200 12 7C OAfl 12 22.54 41,600 TEXAS AND ADJACENT STATES B171

121. YEGUA CREEK NEAR SOMERVILLE, TEX. Location. Lat 30° 19', long 96°30', near center of span at downstream side of bridge on State Highway 36, 760 ft downstream from Gulf, Colorado and Santa Fe Railway bridge, 2 miles south of Somerville, Burleson County, and 5 miles upstream from Davidson Creek. Drainage area. 990 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 199.21 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 17,300 cfs 1-3 a.m. Apr. 27 (gage height, 13.61 ft). 1924 to March 1957: Discharge, 56,800 cfs July 1, 1940 (gage height, 19.27 ft). Maximum stage known, about 22.0 ft Dec. 5, 1913; information from Gulf, Colorado and Santa Fe Railway Co.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 604 9,280 834 11 . 18 1,230 1,020 21 46 305 344 2-.. . 807 5,440 1,260 12 . 14 1,420 513 22 267 162 127 3. 636 3,280 1,220 13..... 9.9 917 688 23 627 82 65 4...... 380 2,230 1,400 14 7.9 952 1,180 24.. 1,310 58 342 5--.- _ 280 1,480 2,060 15.. 6.8 1,140 1,440 25. __ 2,230 41 480 6... . 186 954 2,290 16 15 1,170 1,410 26 9,400 36 98 7.. .. 115 530 2,190 17 24 925 2,370 27 15,400 58 40 8 ...... 64 312 2,460 18 . 11 620 2,050 28 11, 200 489 28 9 . 39 222 2,170 19- 6.9 458 1,280 29 12,600 1,020 22 10 25 607 1,700 20 12 372 689 30 11,600 628 18 31 444

Monthly mean c ischarge, in cubic feet per 2,265 1,189 1,060 Runoff, in acre-fe et 134, 800 73, 100 63,050

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 20 April ZS Con. April 86 Con. 12p.m___ .... 2.18 12 6.20 686 8.37 2,660 8 ...... 6.26 722 8 9.45 4,290 April 21 12...... 6.38 788 10 11.00 7,640 12m...... _ 11.90 10, 300 2.19 12 12.82 13,900 6...... 2.56 21 7...... 13.32 16, 000 12m . ______3.00 36 6.46 842 10 13.56 17,000 3.20 44 4...... 6.61 940 12...... 13.60 17, 200 6...... _ 3.49 56 10 7.12 1,320 10...... 4.39 112 12m...... 7.25 1,440 April 27 12...... 4.65 140 7.35 1.540 8 ...... 7.32 1,510 13.61 17,300 April 22 10...... 7.45 1,630 13.61 17,300 12...... 7.45 1,630 13.60 17, 200 3 a.m...... 4.87 180 8 ...... 13.48 16, 700 7...... 5.04 216 April 25 13.28 15,800 12m-.. .. 5.14 246 7.49 1,670 12.80 14, 000 5.32 302 8...... 7.77 1,950 12 . 12.22 11, 800 8 .... - 5.47 352 12ni______.. 8.22 2.480 12...... 5.74 466 8.37 2,670 April 28 5...... 8.38 2,690 April 23 8 8.30 2,580 11.75 10, 300 12...... 8 ft7 g 11.79 10, 400 5.91 540 12m... 12.02 11, 100 8...... 6.01 590 12.12 11, 400 12m__._ 6.05 605 7.84 8 ...... 12.19 11, 700 2 p.m... _ .. 6.10 632 6 ...... 7.86 2.060 12...... 12.27 12, 000 B172 FLOODS OF 1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 29 May 13 Con. June 6 12.40 12,500 6 AC. 12m...... 12.53 12, 900 12m. 7.77 2 01f\ 2p.m___ ..... 12.54 13, 000 704 7 ^7 2,070 12...... 12.45 12, 600 12...... 710 June 7 April 30 May &1 12.22 11, 800 5.71 4QC 12m- 7.62 2 1 Ort 12m...... 12.14 11, 500 8 p.m...... 12.02 11, 100 12 12...... 11.94 10, 800 638 May 9 12 m_...... 6.36 870 2,500 12p.m...... 5.06 205 6.68 7.91 7.81 2,360 May 10 June 2 June 15 5.15 231 6.80 8 ... 5.39 308 12m-- - 6.86 6.83 12m...... 5.90 1 280 4 p.m_..._ ... 6.41 877 6 1,380 6...... 12 . .. 6.88 1,300 8.--...... 6.63 1,030 6.77 1,240 12...... 6.66 1,060 6.82 1,290 6.94 1,390 May 11 6.72 12 . 7.43 1,910 1,160 1,070 6.76 i ion 12m...... _ 6.85 1,210 6.88 7.05 1,380 7.69 2,210 12..... --.--. 7.16 g 7.85 2,410 12m. 7.91 2,490 May 18 12m . 6.96 1,370 2,500 1,490 7.90 2,480 7.19 1,520 12 1,600 12. 7.82 2,380 12m _...... 7.12 1,450 7.02 1,360 June 5 12...... 6.88 1,230 1,860 12m. 7.61 7.57 2,070 7.75 2,290 12p.m__. . 7.21 1,670 6.70 1,090 2,430

122. NAVASOTA RIVER NEAR BRYAN, TEX. Location. Lat 30°52'10", long 96°11'25", on right bank just downstream from pier of bridge on U.S. Highway 190, 2.5 miles upstream from Shepherd Creek and 17 miles northeast of Bryan, Brazos County. Drainage area. 1,439 sq mi. Gage-height record. Water-stage recorder graph except 8 a.m. June 26 to June 30, for which graph was constructed on basis of recorded range in stage. Datum of gage is 227.4 ft above mean sea level (State Highway Department Survey). Discharge record. Stage-discharge relation defined by current-meter meas­ urements. Maxima. April-June 1957: Discharge, 35,800 cfs 2-3 p.m. Apr. 26 (gage height, 16.36 ft). 1951 to March 1957: Discharge, 28,100 cfs May 18, 1953 (gage height, 16.12ft). TEXAS AND ADJACENT STATES B173

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

l 1,450 11,600 118 11 112 1,490 2,160 21 51 2,420 245 2 1,630 10, 700 187 12__ 75 905 1,910 22 80 1,100 118 3 1,740 8,020 228 13 57 804 1,100 23 . 916 572 76 1,690 5,700 634 14..... 46 5,510 818 24..... 5,080 339 103 5 1,470 4,170 1,180 15_.._. 40 20,300 1,170 25. . 13,900 278 170 6 1,340 3,400 1,620 16 54 12,500 1,840 26 33, 700 514 237 7_ ... 1,040 3,030 2,450 17 ..-_ 62 8,680 2,260 27 27,600 594 156 638 2,600 2,950 18 53 5,930 1,400 28 17,500 569 189 9_ ... 378 1,960 2,810 19 42 4,260 630 29 13,600 392 188 10 . 213 1,770 2,500 20..... 45 3,300 420 30- . 12,500 241 75 31 150

Monthly mean c ischarge, in cubic feet per s 4,570 3,993 998 Runoff, in acre-feet 271,900 245,500 59,390

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April M April 25 Con. May 14 13.42 6,710 11.38 1,440 12m..,..-... 14.35 12, .WO 12m...... 11.61 1,660 15.09 12.25 2,680 12. _ . _ .... 15.65 27, 400 3-. ... . 12.70 3,440 12m...-. . 8.85 288 6 .... 13.82 9,060 1 p.m... _ ., 9.45 420 9 14.60 15, 800 2...... _ _. 10.15 690 12 - 15.03 19, 400 3 -, . 10.75 970 6.. __ .... _ 11.52 1,670 May 15 9 12.02 2,330 qe onn 12 , 12.38 2,870 >K ann 3 a.m...... 15.23 22, 200 QQ qnn 6 15.28 22, 700 April ®4 12 12m...... 15.18 21, 700 14.93 18, 500 12m...... 13.20 5,700 April 27 12... __ ..... 14.67 16, 300 13.21 5,750 5-. -. . 10 17 5,560 12m...... 15.65 27, 400 8... __ 1 Q 09 6 O en 12 p.m...... 15.14 22, 200 12 . 13.26 14.42 13, 700 12m... 14.24 11, 800 13.98 10, 300 10.93 1,080 3 a.m... 13.26 5,980

123. BRAZOS RIVER AT RICHMOND, TEX. Location. Lat 29°35', long 95°45', near right bank on downstream side of pier of bridge on U.S. Highway 59 in Richmond, Fort Bend County, 925 ft downstream from Texas and New Orleans Railroad bridge and at mile 93. Drainage area. Approximately 44,020 sq mi, of which 9,240 sq mi is probably noncontributing. Gage-height record. Water-stage recorder graph except 5 p.m. Apr. 13 to 12 p.m. Apr. 22, 8 p.m. May 14 to 9 a.m. May 16, 9 a.m. May 20 to 2 p.m. June 8, and 12 p.m. June 23 to 5 p.m. June 25, for which graphs were drawn on basis of wire- weight gage readings furnished by the U.S. Weather Bureau. Datum of gage is 40.94 ft above mean sea level datum of 1929, Houston supplementary ad­ justment of 1943. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. B174 FLOODS OF 1957

Maxima. April-June 1957: Discharge, 119,000 cfs 7 p.m. May 5 (gage height, 37.13ft). 1903-6, 1931 to March 1957: Discharge, 117,000 cfs Nov. 28, 1940 (gage height, 38.40 ft). Maximum stage known since at least 1884, 48.2 ft Dec. 10, 1913, from flood- marks on right bank 1,000 ft upstream from gage. Information from Southern Pacific Railroad, stages of other floods at railroad bridge are as follows: May 1884, 43.7 ft; June 13, 1855, 44.7 ft; July 1899, 45.6 ft; May 2, 1915, 43.3 ft; May 9, 1922, 40.9 ft. Flood of June 6, 1929, reached a stage of 40.6 ft according to floodmarks, present site and datum (discharge, 123,000 cfs, corrected). Remarks. Some regulation by reservoirs above Bryan.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 6,400 89, 500 64, 000 11 3,810 61, 600 60, 700 21. ... 1,690 66, 500 52, 000 2 ... _. 8,540 94, 100 64, 100 12 3,110 55, 000 58, 000 22__ 1,670 65, 400 52, 400 3______8.200 99,600 64,800 13 2,730 52, 800 56,500 23 18, 500 65,000 52, 400 4...... 7,330 106, 000 67, 100 14 2,450 58, 300 55, 900 24..... 31, 000 63,100 53, 200 5..--... 7,720 118,000 69,600 15 2,170 71, 000 55, 900 25 35,400 59,600 54, 000 6____.__ 7,480 117, 000 70,400 16. ... 2,020 78, 800 58, 500 26 50,600 58, 100 53,600 1...... 6,500 112, 000 70, 700 17 1,990 83, 800 57, 300 27 _ 65, 300 58,600 53, 000 8_.__.__ 5,720 105, 000 70, 900 18 . 1,900 86, 400 49, 300 28..... 76, 000 59, 100 52, 400 9 5,190 91, 700 68,600 19 1,810 84,100 46,600 29 84, 000 59, 300 52,000 10..____ 4,510 74, 200 64,800 20 . 1,730 74,600 49, 700 30 86, 700 61, 500 52, 100 31 63,400

Monthly mean discharge, in cubic feet per s 18, 070 77, 200 58,350 Runoff, in thousands of a ^re-feet 1,075 4,747 3,472

124. BRAZOS RIVER AT BRAZORIA, TEX. [Temporary gaging station] Location. Lat 29°03', long 95°33', on left bank at Dow Chemical Co pumping plant at Brazoria, Brazoria County, about a quarter of a mile downstream from St. Louis, Brownsville and Mexico Railway bridge and at about mile 21. Drainage area. Not determined. At site about 10 miles upstream, approxi­ mately 44,510 sq mi of which 9,240 sq mi is probably noncontributing. Gage-height record. Water-stage recorder graph except Apr. 1-22. Datum of gage unknown. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Discharge records computed only during flood period unaffected by tidewater. Maxima. April-June 1957: Discharge, 88,100 cfs May 10 (gage height, 23.70 ft). Remarks. About 209,000 acre-ft of floodwater passing the station on the Brazos River at Richmond overflowed into the Oyster Creek channel upstream from Brazoria and did not return to the Brazos River. About 78,000 acre-ft of water from the Brazos River overflowed into Buffalo Camp Bayou upstream from Brazoria during May and returned to the Brazos River below this station. This water is not included in the daily figures given below. TEXAS AND ADJACENT STATES B175

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

I... . . 76, 300 57, 200 11 86.900 58, 500 21 72,000 46,000 2...... 77, 000 58, 100 12 84,000 55, 200 22 __ . 67, 080 47,000 3 __ 77, 500 59, 100 13 77, 000 52, 200 23 8,200 64, 300 47, 100 4 __ 78, 300 59,400 14 69, 000 50,500 24 24,200 61,900 46, 800 5 78,600 60,700 15.. 67, 400 50, 200 25 33, 600 59, 100 47, 600 6...... 79, 000 62, 300 16 69,600 50,900 26... . 39, 900 55, 300 48,800 7 .... 79,900 63, 300 17 71,800 52,600 27 52, 700 53,900 49,400 8 82, 300 64, 000 18 72,800 50,000 28 64,800 53, 800 47, 300 9 . 85,400 63, 400 19 73, 500 44,700 29 72,000 53, 800 47, 300 10...... 87, 300 62, 100 20 . 73,900 43, 300 30 74,900 53, 800 47,000 31 55, 700

Monthly mean discharge hi cubic feet per 70, 930 53,070 Runoff, in thousands of acre-feet 4,361 3,158

COLORADO RIVER BASIN 125. LAKE J. B. THOMAS NEAR VINCENT, TEX. Location. Lat 32°35'09", long 101°12'18", at Big Spring pumping station on south side of lake, 4.0 miles upstream from dam on Colorado River, 7.3 miles north of Vincent, Howard County, 12.5 miles west of Ira, and at mile 845. Drainage area. 3,524 sq mi, of which 2,590 sq mi is probably noncontributing. Contributing are includes 363 sq mi above Bull Creek diversion dam. Gage-height record. Water-stage recorder graph. Datum of gage is at mean sea level, datum of 1929. Maxima. April-June 1957: Contents, 184,500 acre-ft June 13-16, 18-21, 23-26 (elevation, 2,255.5 ft). 1953 to March 1957: Contents, 186,000 acre-ft Oct. 5-7, 1955 (elevation, 2,255.7ft). Remarks. There was no spill from lake during period April-June. Lake is formed by rolled earth-fill dam, 14,500 ft long; storage began in July 1952; dam completed in September 1952. Very little storage before July 1953. The service spillway is a reinforced concrete structure of cloverleaf design, with two 14- by 14-ft uncontrolled openings designed to discharge a total of 10,000 cfs. Two emergency spillways, one 500 ft wide located at left end of dam and one 1,600 ft wide located at right end of dam, are designed to discharge 161,000 cfs at elevation 2,275.0 ft (maximum design level). Capacity, 255,000 acre-ft at top of lower emergency spillway (elevation, 2,264.0 ft); 204,000 acre-ft at top of service spillway (elevation, 2,258.0 ft); 1,300 acre-ft at lip of intake of service outlet (elevation, 2,200.0 ft). All flow of Bull Creek, except that through the spillway at one end of the dam during extreme floods, is diverted into Lake J. B. Thomas by means of a diversion dam across the creek and a gravity canal through the intervening ridge. B176 FLOODS OF 1957

Elevation, in feet, and contents, in acre-feet, at 12 p.m. of indicated day, 1957

At ril May June Day Elevation Contents Elevation Contents Elevation Contents

1- _ 2, 248. 5 137, 500 2, 248. 8 139, 300 2, 254. 6 177, 900 2...... 2, 248. 5 137, 500 2, 248. 8 139, 300 2, 254. 8 179, 300 3... _ ... ----- . . 2, 248. 4 136, 900 2, 248. 9 139, 900 2, 254. 9 180.000 4 ...... --_ _ . 2, 248. 4 2, 248. 8 139. 300 2, 254. 9 180,000 5...... 2, 248. 4 2, 248. 8 139, 300 2, 255. 0 180. 800 6 _. . _ _-.._.__-____ 2, 248. 4 136. 900 2, 248. 8 139, 300 2, 255. 0 180.800 7 1, 248. 3 136. 300 2, 248. 8 139, 300 2, 255. 0 180, 800 S...... 2, 248. 3 136, 300 2, 248. 8 139, 300 2, 255. 0 180. 800 9 .. ..-. - . 2, 248. 3 136, 300 2, 248. 8 139, 300 2, 255. 0 180,800 10 2, 248. 3 136. 300 2, 248. 9 139, 900 2, 254. 9 180,000 11..... _ ----_-...-- __ -...-. 2, 248. 2 135. 700 2, 250. 2 148.000 2, 254. 9 180,000 12...... 2, 248. 2 135, 700 2, 250. 9 152, 500 2, 255. 4 183, 700 13 2, 248. 2 135, 700 2, 251. 4 155, 800 2, 255. 5 184,500 14-...... 2, 248. 2 135, 700 2, 251. 5 156, 400 2, 255. 5 184,500 15 . .. 2, 248. 1 135, 100 2,251.5 156, 400 2, 255. 5 184, 500 16 _ 2, 248. 1 135, 100 2, 251. 5 156, 400 2, 255. 5 184, 500 17 ------2, 248. 1 135, 100 2,251.9 159, 100 2, 255. 4 183, 700 18 2, 248. 1 2, 252. 2 161, 100 2, 255. 5 184, 500 19 2, 248. 1 135, 100 2, 252. 2 161, 100 2,255.5 184, 500 20 2, 248. 1 135, 100 2, 252. 2 161, 100 2, 255. 5 184,500 21...... 135, 100 2, 252. 2 161, 100 2, 255. 5 184, 500 22 2, 248. 0 134, 500 2, 252. 2 161, 100 2, 255. 4 183, 70<1 23 2, 248. 0 134, 500 2, 252. 3 161, 800 2, 255. 5 184,500 24...... 2, 248. 0 134, 500 2, 253. 2 167, 900 2, 255. 5 184,500 25 2, 248. 1 135, 100 2, 253. 6 170, 800 2, 255. 5 184, 500 26 . 2, 248. 2 135, 700 2, 253. 6 170, 800 2, 255. 5 184,500 27 2, 253. 6 170, 800 2, 255. 4 183, 700 28 ...... 2, 248. 4 136. 900 2, 253. fi 170. 800 2, 255. 4 183, 700 29 2, 248. 7 138, 700 2, 253. 5 170, 000 2, 255. 4 183, 700 30 2, 248. 8 139, 300 2, 253. 6 170, 800 2, 255. 4 183, 700 31 2, 254. 0 173, 600

+1 ' 800 +34, 300 +10, 100

126. COLORADO RIVER AT COLORADO CITY, TEX. Location. Lat 32°23'33", long 100°52'42", on right bank at Colorado City. Mitchell County, 3,517 ft upstream from bridge on U.S. Highway 80, 4,100 ft upstream from Texas and Pacific Railway bridge, 1.6 miles upstream from Lone Wolf Creek, and at mile 796. Drainage area. 4,082 sq mi, of which 2,590 sq mi is probably noncontributing. Gage-height record. Water-stage recorder graph except Apr. 4-8, June 27-30, for which graphs were drawn on basis of one gage reading at end of each period. Datum of gage is 2,030.16 ft above mean sea level datum of 1929, supple­ mentary adjustment of 1942. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 13,000 cfs 11 a.m. May 25 (gage height, 19.71 ft). 1923-25, 1946 to March 1957: Discharge, 24,900 cfs July 6, 1948 (gage heights, 22.37 ft, from floodmark). Maximum stage known since at least 1910, 35.9 ft June 20, 1939, from flood- mark (discharge, 66,000 cfs, by slope-area measurement of peak flow at site 2.5 miles upstream from gage). Remarks. Some regulation since July 1952 by Lake J. B. Thomas. All flow during April-June 1957 originated below Lake J. B. Thomas. TEXAS AND ADJACENT STATES B177

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 - 0.2 130 3,540 11 0 1,350 9.7 21 0 23 7.3 2 1.1 65 1,590 12 0 975 67 22 2.6 4.6 6.6 3 1.9 26 289 13 0 2,510 138 23 4.0 2.2 14 4 .1 19 90 14 0 304 58 24 .7 13 43 5 0 14 45 15 0 77 23 25 569 9,560 25 6 0 9.7 28 16 0 32 14 26 4,330 2,200 14 7 0 8.0 20 17 0 336 11 27 427 335 9.7 8 0 16 15 18 0 5,470 42 28- 552 97 7.3 9----.-. 0 878 12 19 0 642 11 29.-..- 3,010 56 5.2 10 .1. 0 119 9.7 20 0 116 8.0 on 1,060 55 4.0 31 7,030

Monthly mean c ischarge, in cubic feet per 332 1,048 205 Runoff, in acre-fe et 19,750 64,410 12, 210

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 24 April 29 Con. May 11 Con. 2.55 0.3 9 70 4,580 6.68 2,400 7 . .. 8.88 3,960 5:72 1,890 April 2S 12 7.42 2,890 5 . 5.21 1,670 5.05 1,580 2.55 .3 10 5.15 1,640 5 3.32 12 5.09 1,600 6 3.05 71 6.48 2,280 7 4.26 890 6 5.17 1,650 8 4.80 1,380 9 4.42 1,050 9- . 6.50 2,290 4.03 670 5.05 1,580 10 . . 7.40 2,880 3.66 403 5 5.10 1,610 12 9.60 4,500 12 -- . 3.39 231 7...... 5.00 1,540 11...... 4.38 1,010 April 26 3.94 600 5 3.67 410 12.13 6,510 3.25 154 9 3.48 284 6- - .-.-. 12.98 7,230 3.17 116 4.20 830 9 _ 6,640 3 H7 7Q 11 ...-. . 3.78 486 12 m. ---.-.. 10.15 4,920 12 4.21 840 7.95 3,260 4 . 6.60 2,350 May 13 7------5.48 1,790 3.13 101 9 5.37 1,750 12 5.10 1,610 6.85 2,510 8.66 3,800 April 27 2.92 36 6 9.21 4,210 4 2.85 23 9 8.38 3,580 3 a.m _ . . 4.37 1,000 3.36 214 7.35 2,840 6-.- . ------3.87 549 4.05 688 6.65 2,380 9... 3.58 349 7. ------4.78 1,370 7 5.00 1,540 12 m -. - 3.40 237 8 9 4 48 1,100 3 p.m_. . .. 3.27 164 11 6.53 2,310 12 4.11 740 12 3.13 101 5 OR i o^n 3 4.58 1,190 April S8 5 __ 3.88 556 8 329 3.71 437 3a.m. _ _ 3.22 138 12 _ _. 3.34 203 10 3.47 278 9 3.22 138 3.30 180 11. 266 May 10 12.... . q 17 116 12m.-. 4.05 688 4.49 1,110 68 9... - ..-. 4.21 840 2.94 11 4.18 810 T...... 3.33 197 2.82 19 12 4.55 1,160 8 3.45 266 10 3.15 108 April S9 12.. -. . 68 May 17 4 68 1,280 2 on 16 3 5.04 1,570 6. - - 2.83 20 5- ___.___. __. 4.52 1,140 3.07 78 7 3.98 630 6 .. 5.10 1,610 50 8 - - 3.67 410 7 6.20 7 4 60 g 4.70 1,300 9 .. . -- 7.20 2,740 8 1,770 10 5.70 1,880 12m..- 9.08 4,110 9 6.17 2.100 12...-.. .- 6.95 2,580 B178 FLOODS OF 1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957- Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May 18 May %6 May 31 Con. 8.90 3,980 10.20 4,960 10 a.m 17.21 10,800 4... _. ..._.._. 11.05 5,640 4 ...... 8.35 3,560 12m-- 16.60 10,300 6 _. --- 6.55 2,320 14.00 8,100 10-----.-----. 13. 59 7, 750 10 5.64 1,860 8 ------11.44 5,950 12.58 6,890 2p.m_. - 4.90 1,470 10.-. ------10.70 5,360 fi_ ...... 10.20 4,960 6 4.50 1,120 11- . 11.15 5,720 9 -____-_ 8.05 3,340 12. 4.05 688 12 . .. 10.88 5,500 12-...-..-..-. 1,900 May « June 1 May 19 3.68 410 8.45 3,640 2a.m_ 4.80 1,380 3.42 243 10.. ------7.22 2,750 4...... _ 3.24 138 7.22 2,750 8 --- - 4.03 7.50 2,950 3.66 403 5..------7.98 3,290 12 3.34 203 8.65 3,790 12p.m.-, - 3.00 50 12 7.50 2,950 A/ay #4 May 30 June 2 3.25 154 2.94 36 6.45 2,260 May 25 11. ...._..._-. 2.97 43 5.60 1,840 3.11 93 4.00 645 5/25 1,690 2.--...... 5.70 1,880 4.75 1,340 3...... 9.00 4,050 May 31 4.25 870 4...... 11.65 6,120 12 . 3.96 592 6-----. -..-. 16.40 10, 100 5.^0 1,660 8._...... _ 18.85 12,300 2 .. 4.45 1,080 11 ...... 19.71 13, 000 3...... 5.50 1,800 18.76 12, 200 ]0.00 4,800 3.66 355 7_-_ ...... 17.43 11,000 5...... 12.35 6,700 3.51 249 10----..----.. 15.05 8,990 9,460 3.30 133 12 ------12.70 7,000 8......

127. LAKE COLORADO CITY NEAR COLORADO CITY, TEX. Location. Lat 32°20'40", long 100°55'10", on left bank at municipal water- intake structure, 1.7 miles upstream from Lake Colorado City Dam on Morgan Creek, 2.2 miles downstream from Texas and Pacific Railway bridge, 2.5 miles upstream from mouth, and 4.0 miles southwest of Colorado City, Mitchell County. Drainage area. 267 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is at mean sea level, datum of 1929. Maxima. April-June 1957: Contents, 38,520 acre-ft 3 to 9 p.m. May 13; eleva­ tion, 2,037.62 ft 6 p.m. May 13. 1949 to March 1957: Contents, 27,870 acre-ft July 1-4, 1954 (elevation, 2,068.13 ft). Remarks. There was flow through the service spillway in May and June. Lake is formed by a rolled earth-fill dam, 4,800 ft long; storage began in April 1949; dam completed in September 1949. Lake is operated by Texas Electric Service Co. for cooling operation in steam powerplant. Colorado City diverts water for municipal supply. Service spillway is of cloverleaf design, is located 100 ft upstream from dam, and has two uncontrolled openings, 10 by 12 ft, that are designed to discharge a total of 5,000 cfs. An emergency spillway, 1,200 ft wide and designed to discharge 150,000 cfs directly into the Colorado River, is located 600 ft upstream and to left of dam. Capacity, 38,700 acre-ft at top of emergency spillway (elevation, 2,073.7 ft), 31,800 acre-ft at top of service spillway (elevation, 2,070.3 ft), and 158 acre-ft dead storage at bottom of service-outlet conduit (elevation, 2,024.3 ft). TEXAS AND ADJACENT STATES B179

Elevation, in feet, and contents, in acre-feet, at 12 p.m. of indicated day, 1957

Al)ril May June Day Elevation Contents Elevation Contents Elevation Contents

1 ______-______.._._ _ 2, 060. 74 2, 069. 85 30, 840 2, 071. 55 34,400 2___ ...... - _-. . _ _ 2, 060. 70 17, 970 2, 069. 85 30, 840 2, 071. 49 34,200 3 ---.------_--- - 2, 060. 70 17,970 2, 069. 87 31,020 2, 071. 15 33,600 4 . -______2, 060. 64 -17,860 2, 069. 83 30, 840 2, 070. 92 33,000 5 ...... _,_ . 2, 060. 66 17, 970 2, 069. 80 30, 840 2, 070. 76 32,800 6 ...... 2, 060. 64 17,860 2, 069. 77 30, 840 2, 070. 63 32, 400 7. - -- -- 2, 060. 53 17, 750 2, 069. 74 30,660 2, 070. 55 32,400 8 . . . 2, 060. 55 17,860 2, 069. 87 31,020 2, 070. 48 32,200 9-.. ------. 2, 060. 55 17, 860 2, 070. 01 31,200 2, 070. 40 32,000 10 -.. 2, 060. 54 17,750 2, 070. 35 32,000 2, 070. 36 32,000 11 - ...... 2, 000. 52 17, 750 2, 071. 97 35, 200 2, 070. 34 31,800 12 - . 2, 060. 48 17, 750 2, 071. 75 34,800 2, 070. 59 32,400 13 2, 060. 47 17, 750 2, 073. 42 38,080 2, 070. 67 32,600 14 --- 2, 060. 45 17,640 2, 072. 17 35,600 2, 070. 58 32,400 17,640 34,000 2, 070. 46 32,200 16 2, 060. 42 17, 640 2, 071. 03 33,200 2, 070. 41 32,000 17--_ ------2, 060. 40 17,640 2, 071. 12 33,400 2, 070. 36 32,000 18 2, 660. 46 17,750 2, 072. 19 35,600 2, 070. 36 32,000 19-.. .-__---_-_..__..____- __. 2, 060. 43 17, 640 2,071.56 34,400 2, 070. 33 31, 800 20 2, 060. 42 17, 640 2,071. 12 33,400 2, 070. 28 31,800 21 2, 060. 41 17,640 2, 070. 85 32, 800 2, 070. 25 31,600 22_. _._-___.__..__--.-__.__.. 2, 060. 45 17, 640 2, 070. 68 32,600 2, 070. 22 31,600 23 --___-..--_..--_.-_ _ 2, 060. 42 17,640 2, 070. 56 32,400 2, 070. 20 31,600 24 ...... ______2, 060. 40 17, 640 2, 070. 66 32,600 2, 070. 17 31,600 25 2,061.08 18, 410 2, 072. 59 36,400 2, 070. 15 31,600 26- _ __- ...... 2, 064. 88 22, 970 2, 072. 13 35,400 2, 070. 10 31, 400 27 23,850 2, 071. 43 34,000 2, 070. 08 31,400 28-__ . _ .__._ _-__ 2, 066. 00 24,600 2, 071. 04 33,200 2, 070. 05 31,200 29 ...... 2, 068. 63 28,720 2, 070. 80 32,800 2, 070. 02 31,200 30 ...... 32,800 2, 070. 00 31,200 31 2,071.14 33,400 +12, 870 +2,560 -2,200

128. COLORADO RIVER NEAR SILVER, TEX.

Location. Lat 32°00', long 100°44', on downstream side of left pier of county road bridge, 5.4 miles southwest of Silver, Coke County, 11 miles upstream from Pecan Creek, 18.5 miles downstream from Big Silver Creek, and at mile 743. Drainage area. Approximately 15,480 sq mi, of which 11,600 sq mi is probably noncontributing. Gage-height record. Water-stage recorder graph except 6 p.m. May 11 to 9 a.m. May 12, for which graph was drawn 011 basis of wire-weight gage readings and high-water mark. Datum of gage is 1,875.09 ft above mean sea level (levels by U.S. Geographical Survey, Topographic Division). Discharge record. Stage-discharge relation denned by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 23,200 cfs 2-3 a.m. May 12 (gage height, 24.19 ft, from floodmark in gage well). Maximum stage known since 1891, about 32 ft in April 1922; information from local resident. Remarks. Some regulation by Lake J. B. Thomas and Lake Colorado City. B180 FLOODS OF 1957

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June1

1 2.6 818 9,750 11 0.9 17,400 108 21 81 773 a 2 8.6 281 15,000 12 .6 16,000 103 22..-. 48 538 4 3 144 146 3,490 13 .5 5,900 613 23 86 1,660 3 4 57 70 1,290 14 .5 4,160 465 24 58 1,050 3 5 ... 23 34 1,090 15-. .5 1,550 265 25 - 27 5,650 2< 6- ... 12 18 715 16 .4 854 151 26 4,700 9,090 4, 7..- . 5.0 9.9 407 17 .2 1,080 104 27 5,970 2,480 3 8_ ... 2.8 5.9 256 18 2.8 8,460 255 28- 5,480 1,160 2 9- -. 2.0 2,300 182 19 4,120 5,520 243 29. . 3.970 636 2, 10 1.6 2,590 140 20 545 1,410 92 30_.___ 5,140 435 2( 31 4,760

Monthly mean c ischarge, in cubic feet per 1,016 3,124 1,16 Runoff, in acre -ftipf 60,480 192, 100 69,55(

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 17 April W April 30 Con. 3.79 0.1 17.63 9 760 15.55 7,550 17.82 9 980 10 14.22 6,220 April 18 5 ... 17 72 9 860 12.80 4,920 7 9,300 11.62 3,900 9 p.m___ .... 3.80 .2 9 .. 16.32 4 . 10.72 3,190 11...... 4.08 6.0 11. . 7 nnn 6- . - 10.00 2,650 12 4.83 13.52 9. 9.07 2,050 3------11.90 4,120 12 8.26 1,570 April 19 5 ...... -- LO. 50 3,020 7 9.30 May I 2 a.m. _-. _ 4.35 29 g 8 At) 1,640 3...... 6.06 486 12 1,220 7.54 1,170 4...... 8.70 g 7.11 955 n fiA 3 QAA 6 64 79 c 6 12 90 6.13 522 8 .. 14.30 6,300 8 no 1,470 12 - 5.81 404 10 15.00 7,000 10. 00 2,650 11 15.05 7 fl^n 3 ...... 12m-. - 14.90 4 ----- 5 nfifi 14.21 6 ]4. 73 6,730 3.96 4.5 4 13.28 8 15.33 6 ------12.10 4,290 g 15.42 7,420 May 9 8. ------10.85 3,290 10 - 7 9On 10 9 50 13.76 5 7sn 3.96 4.5 12 - - 8.50 1,700 13.37 7------7.10 950 2...... 13.37 8-_ -- -- 8.00 1,420 April 20 5 _ ... 13.74 5,770 g 8.23 1,550 8 - 13.92 5,930 10--. ------8.33 1,610 3 a.m.. - 7.41 1,100 g 13.80 8.85 1,910 6... ------6.63 724 5 i4n 10.17 2,780 9 - - 6.10 510 12 12 42 4_ 11.29 3,630 12m- 5.76 386 4,470 6p.m--.~-.- 5.26 229 A rtrif PQ 7..- --- 12.73 4,860 9 5.09 182 4,940 12-. . -. 4.95 146 11.50 3,800 g 12.73 4,860 10.38 2,940 11.83 4,060 April %5 7...... 9.78 2,510 8...... 9.80 2,520 May 10 12 p.m__ 4.37 23 10 10. 35 2,910 12m.-. 11.20 3,560 11.28 3,620 April 26 11.56 3,850 6 9.18 2,120 11.63 3,900 g 7.98 1,410 6 a.m .. 4.37 23 4 11.42 3,740 7.20 1,000 7 7.75 1 290 5 6.23 562 8 10.82 3^260 12 35 3,020 10 12.80 4,920 g 13. 65 5,680 g 12.85 4,960 12m. 14.05 6,050 12 15. 30 7,300 7,150 15.00 7,000 12 17.60 9,720 5 -- 15.60 7 Ann 1 C CO 7,520 8 - 15.58 7 fifcn 8 AKA 10 16.15 8,150 5 16. 38 19.15 11,800 12 17.00 9,000 6..-. ------16. 25 8,250 5... -- 20. 50 14,200 TEXAS AND ADJACENT STATES B181

rage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957- Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

\Iay 11 Con. May 18 Con. May &7 21.45 16,100 1700 9 460 11 52 3 Q9A 0 - 22.05 17, 400 12__---_ 17.33 9,400 3,520 .2m- 22.44 18,400 10.10 2 720 22.84 19,400 May 19 q 64 2,420 3 . 22.90 19 600 9 10 2 Q60 23.25 20,500 17.00 9 non 1 730 )_-- -- 23.65 21,600 5 -- ---. 16.55 9 8.54 1,720 2...... 24.05 22,800 12 8 00 1,630 May n 9 14.95 13.20 5,280 \ fftii &Q 1 a.m __ . - 24.17 23,100 11.40 3 79ft 3 ----- 24.19 6------in OQ 2 oon 7 87 1,350 i...... 24.12 23,000 9.57 2,370 12m- 7.43 5 23.76 21 900 12-. . . 9 09 2 ACA 950 9 __-- 22.98 Qnn 22.08 17 ^nn Ofl 00 14 800 5 19.36 12,200 8 QC 17.00 9 000 1,340 12m- 9...... 14.53 6, 530 7.47 12...... 12.62 4,760 12 7 IS 990 May SO May 13 MaygS 2 a.m _ ...... 11.52 5.70 3 - 11.43 3,740 S on 435 4- 3 HAO May SI 5------19 ^ 4,700 May 2$ 6 _ 13.35 5 79 396 7 ------13.32 5,390 K 7Q 396 4 94 449 8. - 13.40 5,460 714 6 - 6.38 10 _ ------14.15 6,150 10 e on 850 7 00 L2 m.-...... 13.60 5,640 8 4O 1,640 Q no 2 nnn 1 p.m___ .- 13.50 5,550 2,690 9 - 11.00 3,400 2------. ------13.80 5,820 3 nfin 11. 1 Q nn 4 ...... 14.78 2- - 10.10 2,720 5-- 15.05 9 85 2,550 15 90 7- __ ------15.38 7,380 4 ...... 3,130 10 17.43 8 15.43 7,430 11.15 3,520 12 . 18.00 10 * °00 10 15.35 7 °.fUl 6- ..... 10.90 3,320 12.. ------15.10 7,100 7 ----- 2 ggo 9.33 2,210 12 1,890 10,300 4 a.m ------14.12 6,120 4,.- - 10,000 8. 12.80 4 920 6 --- - 18.00 10 200 3 78fi 7 - - i Q on 10,600 3 p.m. 10.70 3,180 7 Q1 1,390 Q 18.63 11, 100 7 - 2 finn 7 78 1,300 11 11,100 12 2,200 7.- -- - 7 61 1,250 1 Q OK 12m.- .. 7.28 1,040 4 17.40 9,480 6.67 741 7 8,150 6 a.m __ --_- 8.68 19 578 8 ...... - 15.93 7,930 12m-.- 10 1 R 9°. 1 290 11 16.23 12 - 7.62 522 12- 7,980 4 .... . ---_ 682 5.-- --- 2,290 ]2m-_---_- 7.13 6 15.86 7,860 12 p.m___ __ 6 74 11.13 3,500 2 ------16.45 8,450 May 17 10.65 3,140 17.60 9,720 11.35 3,680 19.28 12,000 12m--- - 6.4fi >;49 14,500 6 p.m- _--.. 6.33 7,670 9 21.50 16,200 7 ------6.90 71 Q 10, 500 12m-- - 22.35 18,200 8.. . . 8.50 1,640 9- ... 19.08 11,700 22.80 19,300 12 19 90 13,000 4 ------19,500 12 13.00 5,100 5_ 22.80 19,300 22.22 17, 800 20.11 13,400 10 14,000 7 3*U1 13,300 12 18.06 10,300 3 .__ _ 16.00 8,000 7 - - 19.50 12 400 4.. ---. _---.-_ 16.30 8,300 18.35 10,700 7------16.33 8,330 9,420 15.20 7,200 8,380 8,000 13.04 5,140 16.15 4 - 6,750 9 10.74 3,200 13.05 5,140 9.95 2,620 5_. _--.--..-- 9,040 10 4,080 8.90 1,940 8 17.33 Q 40O 12 11 45 3,760 12 8.34 1,610 B182 FLOODS OF 1957

129. OAK CREEK RESERVOIR NEAR BLACKWELL, TEX. Location. Lat 32°04', long 100°17', on left bank at municipal pump station 2 miles above dam on Oak Creek, 3 miles southeast of Blackwell. Nolan County, 14 miles north of Bronte, Coke County, and 20 miles upstream from mouth. Drainage area. 222 sq mi. Gage-height record. Staff gage read once daily. Datum of gage is at mean sea level, datum of 1929. Maxima. April-June 1957: Contents observed, 44,540 acre-ft June 2 (elevation, 2,002.10 ft). 1953 to March 1957: Contents observed, 21,720 acre-ft May 2, 3, 1956 (elevation, 1,990.75 ft). Remarks. Reservoir is formed by a rolled earth-fill dam, 3,800 ft long. Dam completed in May 1952; no appreciable storage before May 12, 1953. Reser­ voir is property of city of Sweetwater and was built to impound water for municipal use by cities of Sweetwater, Blackwell, and Bronte. Uncontrolled service spillway is channel 300 ft wide located to right of dam, crest of spillway at elevation 2,000.0 ft (reservoir capacity, 39,360 acre-ft). Emergency spillway is channel 800 ft wide located between dam and service spillway; crest of emer­ gency spillway at elevation 2,005.0 ft (reservoir capacity, 52,940 acre-ft). Serv­ ice outlet (elevation, 1,951.0 ft) can release water to Oak Creek through 24-inch pipeline. Dead storage is 100 acre-ft.

Elevation in feet, and contents, in acre-feet, at 8 a.m. of indicated day, 1957

AI>ril May June Day Elevation Contents Elevation Contents Elevation Contents

1... _ . __ . _ ..... _ ...... 1, 988. 51 18, 470 1, 990. 81 21, 720 2, 000. 88 41,520 2...... ____ ...... 1, 988. 50 18, 470 2, 002. 10 44,540 3 1, 988. 57 1, 990. 79 21,720 2, 001. 30 42, 520 4__ _ ...... 1 OftR ^7 W finin 2, 000. 85 41,280 5 .. -- _.._-- _ .. 21,720 2, 000. 65 40,800 6 1, 988. 53 18, 470 21, 570 2, 000. 50 40,560 7. . 1, 990. 70 21, 570 2, 000. 40 40,320 g 1 Oftfi 47 18, 470 21, 570 2, 000. 30 40,080 9.-..--...----.----.---..-.. .. 1 Oftfi 4* 1 QQfi 79 2, 000. 25 39,840 10 1 OftR 4^ m ^4rt 1 QQfl 77 2, 000. 20 39,840 11 18, 340 1, 995. 45 29,620 2, 000. 15 39,840 12 1 Qftfi ^O 18, 340 i 007 n^ 39,840 13 1 OftS. ^fi 18, 340 37, 530 2, 000. 25 39, 840 14...... 1, 999. 33 37, 760 2, 000. 15 39, 840 15 i oss. ^i 10 O1 ft 2, 000. 00 39, 360

16 1 OSS ^fi 1S 91 ( \ 37,760 1, 999. 90 39, 130 17 i oss ^n 18, 210 1, 999. 25 37, 530 1, 999. 80 38,900 18 2, 001. 23 42,260 1, 999. 75 38,900 19 - 1 OSS 4fi IS ^4fl 41,520 1, 999. 68 38, 670 20 1 QSS 47 18, 470 2, 000. 65 40,800 1, 999. 64 38,440 21...... 1 988 47 18, 470 2, 000. 52 40,560 1, 999. 60 38, 440 22... . . 1 QSB 4fi 18, 470 40,320 1, 999. 56 38, 440 23 . . 1 OSS 7* 18, 870 2, 000. 32 40,080 1, 999. 53 38,220 24...... 2, 000. 77 41,280 1, 999. 51 38,220 25 ... . 1 QSS 7^ is 7^n 41, 760 1, 999. 49 38,220 26-. 1, 989. 90 20,390 2, 000. 75 41,280 1, 999. 47 38,220 27 1 990 14 20,680 2, 000. 85 41,280 1, 999. 46 38,220 28 2, 000. 85 41,280 1, 999. 43 37,990 29...... 2, 000. 68 41,040 1, 999. 40 37,990 30- ...... 1, 990. 81 2, 000. 52 40,560 1, 999. 36 37,990 31 . .. 40,560

| O OCA +18, 840 -2, 570 TEXAS AND ADJACENT STATES B183

13O. COLORADO RIVER AT BALLINGER, TEX. Location. Lat 31°43'50", long 99°56'25", near left bank on downstream side of pier of bridge on U.S. Highway 83 in Ballinger, Runnels County, 2,000 ft upstream from Elm Creek, and at mile 659. Drainage area. Approximately 16,840 sq mi, of which 11,600 sq mi is probably noncontributing. rage-height record. Water-stage recorder graph except May 2, 21, 30, June 5-10, for which graphs were drawn on basis of engineer's gage readings and trend of recession. Datum of gage is 1,593.74 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Discharge affected by backwater from Elm Creek May 11-13, 18, 19, 25, 26, June 1, 2. Maxima. April-June 1957: Discharge, 27,000 cfs 12 p.m. May 11 (gage height, 20.75 ft, backwater from Elm Creek). 1907 to March 1957: Discharge, 75,400 cfs Sept. 18, 1936 (gage height, 28.6ft). Maximum stage since at least 1882, abdut 36 ft in 1884, from information by local residents. Flood of Aug. 6, 1906 reached a stage of about 32.0 ft, according to floodmarks (backwater from Elm Creek). Remarks. Flow slightly regulated by Lake J. B. Thomas, Lake Colorado City, and Oak Creek Reservoir.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 0.6 3,840 7,430 11. . 2.6 15,200 358 21. 664 1,680 289 2...... 4 1,010 20,200 12 .5 23,100 2,260 22- 221 966 186 3__ . .6 455 21,200 13...... 3 24,300 958 23 1,670 1,240 145 4..._._. 8.4 424 7,780 14 .2 11,200 665 24 .. 349 4,510 122 5--.--.. 21 178 2,150 15__... 1.2 3,530 636 25 -. 109 2,000 106 6 79 125 1,460 16..... 2.6 1,690 508 26 174 9,550 95 7 48 95 1,020 17..... 3.2 1,040 373 27 6,380 9,540 86 8 29 81 736 18...__ 2.6 13,500 621 28 6,370 4,000 81 9-._____ 15 98 562 19.-.. 3.6 12,000 659 29 5,050 1,790 86 10 .._ 6.8 1,820 439 20._.__ 2,760 5,230 466 30 5,180 1,030 81 31 1,890

Monthly mean ( ischarge, in cubic feet per s 972 5,068 2,392 Runoff, in acre-ft;et. 57,820 311,600 142, 300 B184 FLOODS OF 1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Dischargt height height height

April 19 April 29 Con. May 14 Con. 12 p.m...... 1.24 5.9 7.15 5,490 15.60 17,100 11. __ .. _ 6.85 5,110 7...... 12.15 12,100 April 20 6.72 4,950 9...... 10.00 9,100 6 6.38 4,520 11.. __ .... 9.30 8,190 3 a.m... __ .. 1.25 6.3 10 6.12 4,200 8.70 7,420 4 5.45 3,370 12 6.30 4,420 10 8.05 6,610 6...... 6.38 4,520 12...... 7.60 6,050 9.--..-...... 6.65 4,860 April 30 12m ...... 6.15 4,240 May IS 5.20 3,070 6.93 5,210 6...... 4.42 2,150 6...... 6.77 5,010 6.17 4,260 12 3.58 1,260 9 6.18 4,280 12 m_...... 5.23 3,110 11 6.06 4,120 4.43 2,160 April 21 6.50 4,680 6 7.42 5,820 May 17 12m...... 2.76 556 12 8.30 6,920 2.50 407 3.58 1,260 12...... 2.30 311 May 1 May 18 April 22 2 a.m...... 8.35 6,990 5 -.. 7.90 6,420 2 a.m...... 3.75 1,430 12 m_ .... 2.02 194 fi 6.50 4,680 4 6.00 3,850 10 p.m...... 1.89 145 5.20 3,070 6 10.00 8,300 12 ...... 2.56 439 4.32 2,040 8 13.25 12,200 12...... 3.82 1,500 12m.__.-- ... 16.60 16,300 April 23 18.15 18,900 May 2 7 18.70 20,100 1 a.m ...... 2.56 439 g 18.45 20,200 3 ...... 2.95 685 12m.. ... 3.27 953 19 17.20 18,700 3.05 760 2.85 615 a ...... 3.90 1,580 May 19 6...... 5.00 2,830 May 9 8 .... 6.10 4,180 14.80 15, 700 9 6.08 4,150 1.88 141 6 12.60 12,700 11. ____ .. . 5.00 2,830 9 11.60 11,300 4.15 1,860 May 10 11.15 10,700 4 ___ ...... 3.45 1,130 11.00 10,500 12 2.90 650 1.70 86 12 10.60 9,940 11 4.35 2,080 April 24 5.40 3,310 May 20 4...... 5.70 3,680 6 a.m...... 2.50 407 8-. .- 5.40 3,310 9.78 8,810 9...... 2.35 334 10 4.76 2,540 o 7.80 6,300 11 2.50 407 12m-.. 6.10 4,180 6 p.m... _ .. 2.10 224 Man 11 5.05 2,890 12 1.93 159 12 4.55 2,300 4.76 2,540 April 25 2 5.60 3,550 May 21 4...... 7.80 6,300 12 p.m__ ..... 1.73 95 7_ . 12.00 11,900 12m.- 3.92 1,600 9. 13.95 14, 200 3.55 1,230 April 26 12m...... 15.95 16,400 18.00 19, 600 May 22 3 p.m...... 1.72 92 g 20. 00 24,200 4...... 1.88 141 11 . 20.60 26, 400 3.26 944 11 2.05 205 19 20. 75 27,000 3.03 744 12 4.90 2,710 May 12 May 23 April 27 2 a.m...... 20.70 27,000 2.92 664 3 a.m...... 6.50 4,680 4...... 20. 50 26, 400 3.33 1,010 6... .. _ .. 7.60 6,050 6 20. 00 25,100 3.72 1,400 12m.... 8.15 6,740 18. 80 22,500 7...... 3.72 1,400 6 p.m...... 8.52 7,200 18. 00 21, 100 9 4.25 1,960 12 9.20 8,060 19 17. 25 19,800 12 5.10 2,950 April 28 May 13 May 24 6 a.m ...... 9.70 8,710 17. 45 20,300 6.90 5,180 8 ...... 9.45 8,380 6 18. 30 21, 200 7. 8.10 6,680 10 8.50 7,180 10 20.00 24,900 7.12 5,450 2 p.m...... 7.00 5,300 20. 65 26, 800 5.33 3,230 6...... 5.88 3,900 20. 65 26,900 19 4.37 2,100 7...... 5.85 3,860 20. 10 26,000 12 6.95 5,240 12 HI. 50 24,600 May £5 April 29 May 14 3.97 1,660 10 4.12 1,820 4 a.m... _ .... 7.45 5,860 3 a.m...... 17. 85 21,100 3 r>.m__ ...... 3.88 1,560 TEXAS AND ADJACENT STATES B185

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May 25 Con. May 28 Con. June 1 Con. 4.08 1,480 6.70 4,920 6.00 4,050 5.10 1,650 4 __ 6.22 4,320 12m...... 9.00 7,800 9 . 6.87 2,940 8 5.27 3,150 10.95 10,400 12...... 8.35 3,990 12 4.74 12 14.97 15,400 May 26 May 29 June & 9.37 5,180 12m-- 3 99 16.30 17,200 6 . 10.55 7,070 3.59 1,270 6 - 16.83 17,100 9.-...... 11.35 9,190 12 m. ------19.05 19,500 12 ni-__ ...... 11.50 10,700 May SO 19.50 23,800 11.60 11,300 12 19 60 24,800 7 ...... 12.05 12,000 12 in. __- __ 3.33 12-.- . -. 12.60 12,700 3.12 818 JuneS 19,30 24,100 May 87 May 51 12m.--- . 17.73 20,900 16.75 19,000 12.85 13,100 3.08 784 12 16.40 18,300 6 ...... 12.82 13,000 6_ 3.68 1,360 9...... 9 12m...... 10. 95 10,400 12m. ,...._.. 5.23 3,110 16.25 18,100 8.75 7,490 5.33 3,230 3 16.00 17,700 6. 7.50 5,920 6 - 4.27 1,980 5 14.60 15,600 12------..-. 6.54 4,720 12 3.57 1 ' 250 7. 10.50 9,800 9 7.55 5,990 May &8 June 1 12 m. ------6.32 4,450 3.44 1,120 5.48 3,410 10 6.25 4,360 4...... 4.00 1,690 12 4.98 2,810

131. SOUTH CONCHO RIVER AT CHRISTOVAL, TEX. Location. Lat 31° 13', long 100°30', near center of stream on downstream side of center pier of Panhandle and Santa Fe Railway bridge at Christoval, Tom Green County, and 12 miles upstream from Lake Nasworthy. Drainage area. 434 sq mi. Gage-height record. Water-stage recorder graph except 3 a.m. to 1 p.m. May 9, for which graph was drawn on basis of high-water mark. Datum of gage is 2,010.22 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation denned by current-meter measure­ ments below 9,000 cfs and by slope-area measurement at 80,100 cfs. Maxima. April-June 1957: Discharge, 84,000 cfs about 7:30 a.m. May 9 (gage height, 20.82 ft, from floodmark in gage well). 1930 to March 1957: Discharge, 100,000 cfs July 23, 1938 (gage height, 21.95 ft, from floodmarks), from rating curve extended above 9,000 cfs on basis of slope-area measurement of 80,100 cfs. Maximum stage known since at least 1882, about 23 ft Aug. 6, 1906; infor­ mation from local residents.

656087 O 62- -13 B186 FLOODS OF 1957 Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June 45' 1 4.0 25 109 11 5.1 2,040 52 21..... 5.7 50 2. . 4.0 24 128 12 5.7 2,400 52 22..... 8.4 47 47 3. . 9.8 22 98 13 5.7 2,620 52 23 . 1,160 50 45 4...... 4.6 22 65 14..... 5.7 205 52 24..... 129 47 45 5 4.0 21 60 15..... 5.7 65 52 25..... 39 45 45 6 ... 5.1 19 57 16 _ 5.7 47 52 26..... 9,640 47 45 7...... 5.1 19 60 17 5.7 47 50 27..... 3,150 1,920 42 8. ... 5.1 19 60 18..... 4.6 2,310 50 28 81 146 42 9 _ 4.6 21,600 60 19 4.6 237 47 29 35 65 40 10...... 4.6 219 60 20..... 5.1 62 45 39..... 28 57 40 30. 85

Monthly mean d ischarge, in cubic feet per . 479 1,116 56.6 Runoff, in acre-fe et_. 28,520 68,590 3,370

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gtege Discharge Hour Gage Discharge height height height

April %5 May 9 Con. May 14 12p.m...... 2.01 18 3.08 2.65 264 April 26 12m... 2.42 144 12 p.m.. _____ 2.25 82 1 p.m _ ..... 1.97 14 2.83 371 2 ...... 2.10 28 6 ...... 2.67 97 K May 17 3...... 2 on 235 2 4.fi 4...... 8.00 5,530 2.38 197 2.13 50 5...... 11.65 15,300 19 2.30 Q7 6...... 13.65 94 nnn May 18 8...... 15.00 May 11 9- .. 16.10 38,900 9 OK 82 2.20 67 10...... 16.23 39,900 10 9 ftft 352 6...... 2.42 144 11 ...... 15.40 34,200 11 2,240 7...... 2 fiC 264 12 ... 14.10 26,400 12m... . 5.15 2,390 8 ...... 3.18 606 -/x/^rtfr vr 4.10 1,350 9... ______3.55 890 2 ...... 7.50 5,250 10 7.00 4,600 1 a.m ...... 12.70 19 400 3_ _ 8.35 6,480 11 8.80 7,250 2. __ ----- ... 11.00 13,000 4...... 7.85 5.740 12 m...... 9.13 7,940 3...... 8.70 7 080 5...... 8 49 6,710 8.75 7,160 4 _ ------... 7.25 4,920 6 .... . 7.50 5,250 3...... 7.10 4,730 5.. ___ - __ . 6.15 3,530 6.10 3,470 5 _____ . 5.60 2,890 7...... 4.77 2 Oftfi 9..-...... A no 2,150 6 5.00 2,240 S...... 4.34 1,570 12 3.87 1, 150 9 ...... 3.87 1,150 9...... 4.03 1 290 12 . 3.28 676 3.38 754 May IS 2.98 4fi7 -t Kft 850 Q...... 2.75 099 6 3.17 599 2 QC 448 9...... 2.57 91Q 3.00 480 2.73 310 12. ... 2.46 163 10 5 90 3,240 6 ...... 2.58 224 11 6.90 4,470 9_ 2.48 173 -rl/J/lfr *o 5.50 2,780 12m _ ...... 2.35 116 2.30 Q7 C. CO 2 firm 2.26 85 12m. ___ .. 2.21 70 6.15 3,530 12 12 p.m...... 2.10 42 3...... 6.39 4. .... 6.12 3,490 May 26 5 ...... 6.15 3,530 1.96 19 6-...... 6 79 4,330 12 p.m...... 2.18 62 7 ...... ft Q9 4,500 9...... 6.22 3,610 May 27 2.20 67 12...... 4.66 1,890 3 a.m__ ...... 2.18 62 2 ...... 6.00 Mro 4....---...... 7.60 5,390 3 ...... 11.02 13,100 May IS 5...... - 8.42 6,580 4...... 16.25 40,000 4 00 1,260 6 .. ... 8.15 6,180 5...... 18.20 1 250 7...... 7.50 5,250 6 ... . 19.70 70 800 4 50 1,730 9...... 6.00 3,350 7 .... . 20.75 6...... 6.06 3,420 12 m__ ...____ 4.44 1,670 7:30... 20.82 7...... 6.74 4,260 2p.m...... 3.84 1,120 8...... 20.70 82,500 8 .... 7 80 5,670 4...... ____ 3.46 818 9...... 18.82 61,500 g 7 QS 5 QOA 8 2.98 467 10 42,600 11 7.51 5,260 12 2.72 304 12 4nn 12 m__ ...... 10.83 6.38 3,810 May 88 2p.m...... 6.73 4,250 3.... ___ ... 5.17 2,410 4 90 9 HO 6 ...... 4.06 1,310 2.48 173 6...... 4.30 1,530 g 3.43 794 12 m...... 2.36 120 9...... 3.53 12 3.05 515 12p.m.. _ 2.24 79 TEXAS AND ADJACENT STATES B187

132. MIDDLE CONCHO RIVER NEAR TANKERSLY, TEX. |Location. Lat 31°22'35", long 100°36'50", on left bank 220 ft upstream from bridge on U.S. Highway 67, 3 miles northeast of Tankersly, Tom Green County, and 9.5 miles upstream from Spring Creek. Drainage area. 1,280 sq mi, of which 152 sq mi is probably noncontributing. Gage-height record. Water-stage recorder graph. Datum of gage is 1,919.51 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 12,000 cfs 6:30 p.m. May 12 (gage height, 21.18 ft). 1930 to March 1957: Discharge, 27,500 cfs Sept. 26, 1946 (gage height, 24.30 ft, from floodmark). Maximum stage since at least 1900, about 27.2 ft in April 1922; information from State Highway Department. Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 0 447 661 11 0 690 24 21..... 0 583 12 2 ...... 0 164 1,240 12 0 5,760 20 22 0 224 8.7 3...... 0 81 335 13..... 0 4,540 62 23 1,110 199 6.6 4 ...... 0 41 201 14 0 375 42 24 61 93 5.8 5 ...... 0 24 202 15..... 0 125 22 25 11 76 5.0 6. ... 0 17 145 16 0 57 16 26- ... 720 172 4.2 7 0 13 86 17 0 54 12 27 2,230 196 3.5 8 0 9.8 60 18 0 7,090 58 28 4,490 44 2.6 9. ... 0 66 44 19..... 0 4,430 76 29 3,120 31 1.5 10...... 0 182 32 20 0 978 19 30 -- 1,670 26 1.5 31 849

Monthly mean ( ischarge, in cubic feet per 447 892 114 Runoff, in acre-fiipt 26,600 54,820 6,760

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April Hi April %6 April %7 Con. 0 1.11 6.2 8.55 2,620 9 ...... 2.93 254 10 13.45 5,620 April £3 11...... 2.60 183 11 15.45 7,060 2.30 136 12 . .... 14.20 6,140 1 a.m ...... 4.45 2...... 2.90 94. ft 2...... 7.10 1,940 3 ...... 5.40 1,110 3...... 9.05 6.20 1,500 4...... 10.05 3,430 7 en 2,120 12.35 4,840 5...... 10.05 3,430 6...... 7 60 2,170 13.25 5,480 7 ...... 6.95 1,880 6.45 3 ... 14.19 6,130 9 ...... 5.29 1,070 5.40 1,210 4 ...... 12.90 5,230 11 . 4.62 785 g 5.75 i Q*\H 5 ...... 10.90 3,940 1 p.m...... 4.95 910 12 ...... 8.05 2 oofl 6 ...... 11.80 4,480 3 ...... 4.21 638 7...... - 14.80 6,560 5.. . . 3.47 385 April £7 8.. 16.55 7,940 7...... 3.03 16.65 8,020 9...... 2.69 204 9 85 3 QOft 10 15.05 6,740 12_ _ ., 2.30 136 2 ..... 11.05 4,030 12.40 4,880 3...... 10.95 3, £70 10.91 3,950 April H 4. __ ...... 8.55 2,620 9.50 3,120 5...... 5.95 1,430 4 ...... 8.28 2,490 6 a.m...... 1.89 76 8 ...... 3.61 534 6...... 8.85 2,780 12m___ . .. 1.66 51 2.73 266 g 10.13 3,480 12 p.m...... 1.38 23 3.55 CIQ 12... 10.93 3,960 2...... 6.05 1,470 April K 4.. .. . 7.12 1,950 April 29 7 ...... 7.95 2,330 12p.m__ ..... 1.15 8.0 8...... 8.03 2.360 4 a.m. _ . _ . 11.97 4,580 B188 FLOODS'OF 1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge ' height height height

April %9 Con. May 12 Con. May 19 6 a.m...... 12.10 4,670 21.18 12, 000 4 a.m.... _ . 15.70 7,260 7...... 12.03 21.15 12, 000 6 15.85 7,380 9...... 11.25 4,150 8--... -...-... 20.65 11,500 7 . 15.75 7,300 12m...... 8.80 2,750 9 .-. . 19.25 10,200 9 ... 14.65 6,460 2 p.m... __ 7.35 2 060 10 ...... 16.80 8,140 11 12.30 4,810 3...... 7.00 1,900 11 13.30 5,510 1 p.m...... 9.90 3,340 5...... 6.72 1,770 12...... -..--. 10.00 3,400 5- ..... 7.80 2,260 6... 7.08 1 940 12 5.36 1,190 8...... 8.12 2,410 May IS 11...... 6.75 1,790 May SO 12. 6.57 1.71C 1 a.m...... 9.00 2,850 2.. ___ ...... 8.95 2,820 12p.m... __ 1.38 23 April SO 3...... 10.55 3,730 4...... 12.75 5,120 May SI 6.92 1 860 5...... 13.55 5,680 7 . 7.80 2,260 7 ...... 15.28 6,920 3 a.m __ -.-. 1.52 38 g 7.80 2 260 8 ...... 15.12 6,800 6...... - 1.97 106 7.13 1 Qftn 9...... 14.89 6,620 7 2.05 120 I oon 10...... 14.90 6,630 8 2.50 213 12 -- 4.28 12 in... 15.28 6,920 9 6.50 1,680 14.83 10 7.28 2,030 May 1 4 ...... 6,070 5.73 1,340 6...... 10.00 3,400 4.92 1,020 3.68 558 7. . 6.90 1,860 5 ___ ...... 4.10 706 12 m.._ --.-.- 3.22 401 9 . . . 4.88 1,000 6...... 4.30 778 2.95 12...... 4.08 699 8 5.75 1,350 7.----.. _ ... 2.95 321 9 5.95 1,430 12. 94 R 11 5.70 1,330 12 5.75 1,350 May 2 3.32 435 10 ...... 3.05 349 12m.-.. _ .. 2.22 153 1 p.m.--.. ... 3.05 349 12 p.m...... 1.95 102 6-...... 2.78 278 2 a.m...... 5.80 1,370 12 2.42 195 3 .... 5.95 1,430 May 10 5.60 1,290 7. - 4.75 950 1.95 102 Q 4.00 670 12m____ _ .. 2.02 115 12m- 3.36 448 May 11 12 p.m______1.80 76 3.00 334 6 - 2.74 269 8a.m. ._ 1.73 66 19 2.45 202 9...... 2.05 120 10... . ------2.90 308 12 p.m... 1.57 44 11 . 3.21 397 12m...-.---. 5.86 1,390 May 17 2.44 1QQ 1 p.m...... 5.92 1,420 5...... - 2.48 208 2.. . 5.25 1,150 12m. ._...... 1.48 32 6 2.66 250 3_ 4.97 1,040 1.46 30 7..- ...... 3.00 334 4... ---.--..-. 6.30 1,580 10...... 1.55 41 5.15 1,110 5...... 6.80 1,810 11 1.67 57 g 1,860 6...... 5.62 1,300 12- . 4 50 850 11 9.35 3,040 7...... 4.52 858 10.25 3,550 8 5.00 1,050 9 Qfifl 9...... 5.34 1,190 7.80 2,190 12...... 4.10 706 1 a.m...... 5.42 1,220 5 5.60 1,110 2 ...... 6.70 1,760 7 .. 5.33 1,000 May IZ 3...... 9.50 3,120 5.58 1,100 5...... 12.70 5,090 4.73 753 2 a.m___ ..... 3.35 445 6 .... . 15.75 7,300 4 2.93 316 8...... 19.65 10, 600 5...... 4.50 850 9 ...... 20.85 11,700 6...... 5.85 1,390 10 21.05 11 900 3.90 489 7...... 6.30 1,580 11 20.55 Hi 400 6 3.38 329 10...... 9.50 3,120 18.65 9,680 10 3.02 250 11 11.60 4,360 15.30 6,940 3.45 343 12m-...... 15.00 6,700 6 ...... 14.35 6,240 3.11 266 2 p.m...... 18.95 9,960 7 ...... 13.95 5,960 12 2.73 190 4...... 20.65 11, 500 8...... 13.97 5,980 6... _.._._ 21.16 12. 000 12. -- 14.97 6.680 TEXAS AND ADJACENT STATES B189

133. SPRING CREEK NEAR TANKERSLY, TEX. Location. Lat 31°21'30", long 100°32'05", on right bank 2.8 miles upstream from mouth and 6.5 miles east of Tankersly, Tom Green County. i Drainage area. 734 sq mi. Gage-height record. Water-stage recorder graph except June 24. Datum of gage is 1,874.61 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Discharge interpolated June 24. Maxima. April-June 1957: Discharge, 29,400 cfs 12:30 p.m. May 9 (gage height, 21.35 ft). 1930 to March 1957: Discharge, 26,900 cfs Aug. 23, 1942 (gage height, 21.37 ft), from rating curve extended above 18,000 cfs. Maximum stage known, about 26.0 ft in 1882; information from local resi­ dents.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 0 61 2,030 11 0 6,430 63 21 0 101 33 2 0 39 616 12 0 5,970 64 22 0 88 31 3 -. 0 33 215 13 0 5,420 54 23 646 175 31 4. 0 30 184 14 0 508 51 24 106 132 30 5 . 0 25 115 15-..-. 0 158 47 25 24 77 29 6 0 22 84 16 0 101 45 26 5,170 913 23 7-.. . 0 19 74 17 0 210 43 27 6,550 1,860 20 8 - 0 20 70 18 0 6,220 43 28 434 189 20 9 0 11,400 69 19 0 495 48 29- . 422 102 18 10 0 488 66 20 0 143 37 SO ­ 351 75 15 SI 531

Monthly mean c [ischarge, in cubic feet per 457 1,356 142 Runoff, in acre-f 27,180 83,380 8,470

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 25 April&f Con. May 9 Con. 12 p.m.-.. 1.98 21 5.90 1,660 10.41 5,110 5.15 9.20 4,020 April m 4- ... 4.55 907 9 ...... 7.07 2,420 6.. -- - 4.15 1 9 5.67 1,410 12m-... 1.87 14 3.72 499 2.20 46 12 382 2_ 3.20 305 3...... 4.65 961 4.44 702 4...... _-_-- g 3 ftfi 5...... 13.00 8,300 72 12m... - 346 6.. ------15.40 12,300 3.18 236 7 15.68 May 9 19 2 QC 170 8 16.35 9. ...__...... 17.70 17, 600 4.10 676 May 11 11 19.20 21,900 2 7.35 2,600 12 20.00 24, 500 3 . 11.75 6,600 2.75 123 4 g 3.20 242 April m 14.72 11,100 5.55 1,350 6 14.82 11, 200 11 8.30 3,290 20.55 26, 400 7...... 12.00 6,900 2...... -...--. 20.74 27, 100 9 18.75 20, 600 15.15 11,800 3...... 12,900 4 17.66 17,500 4 ... . 16.00 13,400 5...... 15.60 12, 600 29, 400 15.90 13,200 6 ...... - 13.53 9,100 21.25 29,000 7...... 14.76 11,100 7...... 11.53 6,340 15.74 12,900 8...... 9.44 4,220 3. .... 15.14 15.25 12,000 10 7.25 2.530 4. 13.43 8.940 12 . 13.65 9,280 B190 FLOODS OF 1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May IS May 18 May 31

ft Qflf» 11.70 2.15 54 3 . 8 1 A. 3,160 11.00 5,700 4...... 2.50 112 5 . 6.25 1 Rftfl 3...... 11.50 6,300 8...... 2.46 104 7 . 5 QA 4...... 13.85 9,580 9...... 2.60 134 8 1,230 5 .... 15.20 11,900 10 3.80 535 9...... 5.16 1 240 6.-...... 15.00 11, 500 ll _ 4.47 864 10 * (M 1 fton 7... ..-. ------14.00 9,800 12m-.-...... 4.75 1,020 11 7.10 8 ...... 13-25 8,680 5.24 1,280 12m.-..-. _ 9.50 4,280 9 ...... 13.18 8,570 3-.-.--.-. _ . 4.65 961 1 p.m.. -. 9.60 4,360 11 12.30 7,320 6 - - - - 4.05 650 2 _ ... .- _ -. 8.85 a 7QA 12m. .... 12.05 6,970 8 ...... 3.82 544 3. in Qn 5 Ann 12.07 7,000 9...... 4.26 757 4...... 7,220 2 __ ...... 12.00 6,900 10 4.39 824 6...... 14.50 11.60 12 4 no 671 7..- ...... 15.73 12 900 9 QC 4,660 8.. . _ .... 1 c 7«| 19 Qfin 7...... 7.85 2,940 10 15.35 12,200 9 ...... 6.42 1,990 11...... 12...... 5.17 562 12...... 10 flA Q onn 3...... 3.83 548 May 19 6...... 3.47 400 May IS 7 ...... 10.10 4,800 4.33 793 8 ...... 12.50 7,600 2a.m...... 9 77 4 CAA 8...... 3.78 526 9 ...... 11.15 5,880 3 - 9 06 3 900 12m...... 3 4.9 QQO 9 7K 4,490 4...... 9.75 4 490 3.08 267 8.55 3,490 5 - 10.45 5 1 %n 2 Q7 7.70 2,840 7...... 1 9 QQ 8 OAA 7 19 2,450 8 13.75 9 4.9ft 3 ...... 6.65 2,140 9...... 9 QCA 6 ...... 1 97 1,300 11 12.00 B onn 2.27 70 9- .. 4.35 804 12m.... _ .. U on 6,780 1 9 3 QQ 571 11 90 6 QQA 3...... 11.80 5 _____ . 10.10 4 QflA 69 7...... 7 on 2 QQA 2.31 77 3.32 346 9...... 6.40 1 GOO. Q 10.50 5,200 11 3.00 242 12 1,230 10 - 12.08 7,010 3.20 305 11 11.00 5.700 4.95 1,120 May 14 12... 10.45 5,150 2...... 5.13 1,220 3...... 5.00 1,150 4a.m __ .. 4.34 May 27 5.05 1,180 8 3.80 535 5 ...... 4.98 1,140 9 3.77 522 8.85 3,730 4.43 844 12 m...... 3.45 QQQ 3...... 8.50 3,450 g 4.00 625 6p.m...... 3.14 286 5...... 8.35 3,330 19 3.58 442 12 9 04. 6...... 8 CO 3,510 7...... 8.20 2,210 May 16 9 ...... 6.65 2,140 12m.__ ... 5.23 1,280 3.19 302 12p.m...... 2.42 84 g 2.96 230 6_...... 4.00 625 12m.-.... 2.80 183 May 17 9.. . 3.60 450 2.65 146 12- _. 3.27 329 12 2.53 119 2 41 GO 8. .... 2 KA 1 AC 11 2 50 101 12.. _ - ...... 11.20 12p.m.-. . 55

134. :LAKE NASWORTHY NEAR SAN ANGELO, TEX. Location. Lat 31°23'15", long 100°28'40", on left bank 250 ft upstream from Nasworthy Dam on South Concho River, 0.5 mile downstream from Middle Concho River, and 6 miles southwest of San Angelo, Tom Green County. Drainage area. 2,659 sq mi, of which 152 sq mi is probably noncontributing. Gage-height record. Water-stage recorder graph. Datum of gage is 1,840.00 ft above mean sea level, datum of 1929. Maxima. April-June 1957: Contents, 14,630 acre-ft 10 a.m. May 9 (gage height, 33.60ft). 1930 to March 1957: Contents, 26,900 acre-ft Sept. 15, 1936 (gage height, 38. 36 ft). TEXAS AND ADJACENT STATES B191

[Remarks. Lake is formed by 5,480-ft dam comprised of a 3,780-ft earthen section, two emergency spillways that are 300 and 600 ft in length, and a concrete service spillway that has a bank of fifteen 25-ft taintor gates and one collapsible floodgate. Dam completed and storage began Mar. 28, 1930. Capacity, 27,470 acre-ft at top of 300-ft emergency spillway (gage height, 39.0 ft), 13,990 acre-ft at top of taintor gates (gage height, 33.2 ft), 12,390 acre-ft at top of collapsible floodgate gage height, 32.2 ft). Capacity at top of 600-ft emergency spillway (gage height, 41.0 ft) not determined. There is no dead storage. Water used for San Angelo municipal supply. Gage heights are at 12 p.m. Gage height, in feet, and contents, in acre-feet, at 12 p.m. of indicated day, 1957

Ai>ril M ay Jume Day Gage Contents Gage Contents Gage Contents height height height

OQ Qft 7 8AH 32.38 12, 710 30.45 9,650 2 9Q 8fl 7,750 32.11 12,230 30.66 10,050 3 28.75 7,750 32.05 12, 070 31.05 10, 470 4 28.67 7,640 32.16 12,390 31.00 10,470 5 OQ KQ 7 ^fi 32.23 12,390 31.58 11,430 6 28.56 7 t&(\ 00 OQ 12,350 31.98 12, 070 28.45 7,310 OO OO 12,550 32.17 12,390 8 28.36 7,310 °.9 4n 12, 710 32.19 12,390 9 28.28 7,200 30.50 9,770 32.18 12,390 10 28.23 7,090 31.34 10,950 32.12 12,230 11 OQ 1 ft 7,090 29.10 8.G90 32.00 12, 070 12 OQ no 31.20 10,790 31.13 10,630 13 28.04 6,870 30.04 9,170 31.35 11, 110 14 28.02 6,870 30.66 10,050 31.53 11,270 15 OQ A1 6,870 01 07 10,950 31.68 11,590

16 OQ Of) 6,870 31.62 11, 430 31.79 11,750 17 27.95 6,870 31.27 10,950 31.89 11, 910 18 97 87 6,770 98 4.8 7,420 32.00 12,070 19 97 81 6,670 29.65 8,690 32,21 12,390 20 27.76 6,670 31.62 11,430 32.32 12,550 21 27.70 6,570 30.97 10, 470 32.40 12, 710 22 27 90 6,770 °.1 ^1 11, 270 32.46 12,870 23. 32.17 12,390 32.17 12,390 32.50 12, 870 24 12,550 32. 30 12,550 32.56 13,080 25 32.28 12,550 30.85 10,190 32.53 12, 870 26 oo 19 12,230 29.05 7,970 32.32 12,550 27 31.82 11,750 29.05 7,970 32.36 12, 710 28 32.10 12,230 29.92 9,050 32.36 12, 710 29 32.23 12,390 30.28 9,530 32.38 12, 710 30 32.06 12,230 30.51 9,770 32.38 12, 710 31 on no 9,290 +4, 370 -2,940 +3,420

135. NORTH CONCHO RIVER NEAR CARLSBAD, TEX. Location. Lat 31°36', long 100°39', near left bank on downstream side of pier of county road bridge, 0.6 mile southwest of Carlsbad, Tom Green County, 1.5 miles upstream from Mule Creek, and 16.2 miles upstream from San Angelo Dam. Drainage area. 1,533 sq mi, of which 123 sq mi is probably noncontributing Gage-height record. Water-stage recorder graph. Datum of gage is 1,968.02 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 8,180 cfs 10 p.m. Apr. 28 (gage height, 14.75ft). B192 FLOODS OF 1957

1924 to March 1957: Discharge, 94,600 cfs Sept. 26, 1936 (gage height, 16.0 ft at site 2^ miles upstream, 29.1 ft at present site, from floodmarks), from rating curve extended above 11,000 cfs on basis of slope-area measure­ ments at 35,600 and 94,600 cfs. Maximum stage known since at least 1853, that of Sept. 26, 1936.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 0.1 155 52 11 0.2 851 12 21 27 28 5.2 2 .1 58 3,060 12 .1 2,910 379 22 49 17 4.4 3. 0 33 1,430 13 0 720 22 23. 212 1,180 4.1 4 9.3 16 196 14..... 0 128 12 24 53 2,230 3.3 5__. ... . 8.4 14 88 15. .1 46 9.0 25 21 552 3.1 6 4.6 12 206 16. .1 24 7.4 26 13 212 2.6 7...... 3.3 10 58 17. .1 19 6.8 27 118 62 1.7 8 1.5 9.8 30 18 . 1 2,390 23 28. 5, 940 32 .8 9...... 8 9.0 21 19..... 141 410 20 29. 2,770 24 .2 10 .4 119 16 20 144 64 7.5 30 751 21 .2 31 448

Monthly mean c ischarge, in cubic feet per 342 413 189 Runoff, in acre-ft5et 20,370 25, 400 11,270

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April K April SO May n

12p.m __ ... 2.68 11 3 a.m ___ __ 6.85 1,170 8 nn 1,880 en 5 ...... 6.25 865 g S 2 260 April %7 7...... 6.08 787 10_ _--- _ n KA 8 ...... 6.00 750 10 QA 7,410 7 p. in ---... 2.70 12 10...... 5.93 722 19 on 8 3.20 47 12m...... 5 OR 9.... ------4.70 302 3 p.m_ .. ... 5.68 626 2 QAf\ 10 3.85 128 12 4.64 288 9.05 2,700 11 6.85 1,170 9 30 2 940 12 8.10 1,960 May 1 10.70 4,300 7 10.73 4,330 April %8 6 a.m _ __ ... 4.20 190 g & QK 2 980 12m .. ... 3.90 135 7 79 1,700 1 a.m ___ ... 9.90 3,500 12 p.m .. 3.53 83 19 2...... 12. 50 3 14.15 7,640 -A-/GW 9 4 13.75 7,280 May IS 5 . _ 12.00 5,600 9 7O 9 0 6 ...... 4 Kf\f\ 1,850 7 10.65 4,250 I 1,780 9 - ..... - 10.53 4,130 6 6.90 1,200 12m _ 11.35 4,950 2 7O 9 0 8 5.80 672 3 p.m. . __ 12.40 6,000 4.78 322 5 ...... 13.22 6,800 000 4.75 314 7 ... 14.02 3 A K7 971 5.22 460 9...... 14.55 8,000 6 4 09 3 5.25 470 10 14.75 19 3 fi9 94 5 4.73 310 11 14.55 8,000 4.32 214 12 13.85 May 11 1 9 4.06 163 3 a.m ...... 3.49 78 April 29 4 __ . .. 8.50 2,260 5 _~ 9.66 3,280 May 17 2 a.m...... 11.00 6 9 QK 9 Qftfl 4-_ ... 8.52 2,280 7 8.15 3.79 118 6 7.50 1,550 8 _ 7_ ...... 7.30 10 C CO 586 1 p.m ...... 7.07 1,290 May 18 2 . 7.27 1 410 4.43 OOQ 3 . 11.00 3 QQ 3.70 105 4.-.--. . 11.65 5,250 6 302 2- .. - 8.25 2, 070 5...... 10.55 4,150 7 . K QK 730 9.75 3, 3fiO 7 _ 9.73 3,340 8 .... 6.33 902 11.75 5, 350 10 8.63 2,360 10 6.20 842 K 4, 400 12. . 8.00 1,880 12- . .- 6.43 948 6 ... - 9.53 3, 150 TEXAS AND ADJACENT STATES B193

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957- Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May 18 Con. May $4. Con. June 3 Con.

9.73 3,340 U OQ 10-. .... 9.13 2,770 7______.______5.64 610 3 . ... 9.95 3,550 12m______9.25 2,890 12 5.34 5__. -___.--.__ 8.25 2,070 8.63 2,360 7.33 1,450 5. ______7.97 1,860 8__. .-.-..__.. 6.67 1,070 8 7.73 1,700 10_.______9______..__ 7.52 1,560 5.34 501 6.80 1,140 12______. 6.15 819 6 5.60 594 4_____...... 6.30 888 10 5.87 700 5.62 602 May 19 12 m.______5.82 680 9_. ... . _ 5.20 453 5.05 402 12...... 4.87 347 2 a.m_ _ 5.80 672 11.. .-..______4.47 248 5 5.95 730 4.52 9AO 6 5.95 730 9 5.50 555 4.42 237 12 m.. ______4.80 327 12m___._____ 4.15 180 4.06 163 2.82 23 3.92 138 12__. ______3.68 102 12. - 4.45 244 12.. ______3.76 114 May #5 June 2 June 11 12p.m. ___ __ 2.65 14 4.52 2.54 11 3... ______6.50 980 May S3 4______-__ _ 9.30 2,940 June 12 5...... 11.08 4,680 12 m ... 2.62 12 6______10.00 3,600 2.53 11 2.68 15 7.. ___....__._ 8.22 2,050 6 _-- . 2.82 24 4______3.70 105 9___. ______8.50 2,260 7__. ..____-._. 7.15 1,340 5___. ______7.00 1, 250 9.25 2,890 8~ ----- 8.52 2,280 6. __-__. 9.30 2,940 12m______11.00 4,600 9 7.20 1,370 8_...... 10.80 4,400 2p.m______11.55 5,150 10- 6.20 842 9_. ______.. 11.05 4,650 10.55 4,150 11 5.95 730 12.. ..______10.67 4,270 6__ __ ... 9.20 2,840 2p.m- ... 4.63 285 9.08 3.76 114 9______._ 9.50 3,120 12 . - 3.15 45 12______10.28 3,880 3 a.m_____ 10.58 4, 180 6 .... 10.27 3,870 2.87 26 9______2.70 18 7.85 10.33 3,930 12p.m-..____ 2.62 14

136. SAN ANGELO RESERVOIR AT SAN ANGELO, TEX. Location. Lat 31°29'04", long 100°28'53", at San Angelo Reservoir dam on North Concho River, 3.1 miles northwest of San Angelo, Tom Green County, 6.2 miles downstream from Dry Creek, and 10.1 miles downstream from Grape Creek. Drainage area. 1,790 sq mi, of which 123 sq mi is probably noncontributing. Gage-height record. Water-stage recorder graph. Datum of gage is at mean sea level, datum of 1929. Maxima. April-June 1957: Contents, 93,240 acre-ft at 12 p.m. June 12 (eleva­ tion, 1,902.70 ft). 1952 to March 1957: Contents, 59,270 acre-ft June 8, 1954 (elevation, 1,893.34ft). Remarks. No water released from reservoir during the period April-June 1957. Reservoir is formed by a rolled earth-fill dam. Dam completed May 3, 1951, and deliberate impoundment of water began Feb. 1, 1952. Outlet works consist of six gate-controlled outlets at elevation 1,840.0 ft opening into two concrete conduits 18 ft in diameter, and two 30-inch gate-controlled outlets for water supply. Total controlled capacity, 396,400 acre-ft at crest of spill­ way (elevation, 1,938.5 ft) and 119,200 acre-ft at top of conservation storage (elevation, 1,908.0 ft). Reservoir is operated for flood control and municipal water supply. Records furnished by U.S. Army Corps of Engineers. B194 FLOODS OF 1957

Elevation, in feet, and contents, in acre-feet, at 12 p.m. of indicated day, 1957

Ap ril May Jur e Day Elevation Contents Elevation Contents Elevation Contents

!___. 1, 883. 20 32, 290 1, 891. 75 54, 470 1, 900. 00 82,160 2_...... 1, 883. 20 32 290 1, 891. 77 1, 901. 69 oc nan 3...... 1, 883. 17 32, 220 1, 891. 77 1, 902. 36 91 760 4. .__- - 1, 891. 75 54, 470 1, 902. 44 92, 110 5___...... 1, 883. 12 32, 110 1, 891. 72 54,380 1, 902. 45 92, 150 6_ ...... 1, 883. 09 QO (\A(\ 1, 891. 69 54,300 1, 902. 51 92, 410 7...... 1, 883. 07 32, 000 1, 891. 66 54, 210 1,902.51 92. 410 S...... 1, 883. 02 Q1 QQA 1,891.68 54, 270 1, 902. 49 92, 330 9 1, 883. 00 QI ocn 1, 891. 70 54, 330 1, 902. 46 92, 200 10...... 31, 780 1, 891. 72 54, 380 1, 902. 43 92,070 11 1 8S9 Q5 31, 740 1, 892. 30 56, 110 1, 902. 40 91, 940 12 31, 670 1, 894. 12 61, 700 1, 902. 70 93, 240 13.. -. 1, 882. 89 31, 600 1, 894. 99 64, 480 1,902.67 93, 110 14...... -...... 1. 882. 87 31,560 1, 895. 05 64, 680 1, 902. 64 92,980 15 ._-.---.- ...... 1, 882. 86 01 C^A 1, 895. 05 64 680 1, 902. 57 92, 670 18 1, 882. 86 31, 540 1, 895. 05 64, 680 1, 902. 56 92, 630 17 .. 1 ftft9 fid Q1 CAA 1, 895. 12 64 910 1, 902. 52 92, 450 18 1 889 84 31, 500 1, 897. 27 72, 150 1, 902. 51 92, 410 19-.-...... 1, 882. 85 31, 520 1, 897. 50 72,960 1, 902. 49 92, 320 20. ----- 1, 883. 04 31, 930 1, 897. 50 72,960 1, 902. 45 92, 150 21 1, 883. 05 31, 960 1, 897. 49 72, 920 1, 902. 41 91,980 22...... 1, 883. 25 32, 400 1, 897. 47 72, 850 1, 902. 37 91, 810 23 1, 883. 66 33, 320 1, 897. 89 74, 340 1, 902. 33 91,640 24 33, 410 1, 899. 06 78, 590 1, 902. 30 91, 510 25_ _ _ 33, 450 1, 899. 34 79, 640 1, 902. 26 91, 340 26. . 1, 884. 11 34, 340 1, 899. 46 80. 100 1, 902. 22 91, 160 27. ., 1 ft84 Q7 1, 899. 51 80, 280 1, 902. 18 91, 000 28 45, 560 1, 899. 50 80, 250 1, 902. 14 90, 820 29 ...... 1, 891. 10 52, 570 1,899.48 80, 170 1, 902. 09 90, 610 30 1, 891. 70 54, 330 1, 899. 46 80, 100 1, 902. 05 90, 440 31 1, 899. 88 81, 700 +21, 980 +27, 370 +8, 740

137. CONCHO RIVER NEAR SAN ANGELO, TEX.

Location. Lat 31°27'10", long 100°24'40", on right bank 0.5 mile downstream from confluence of North Concho and South Concho Rivers and 1.8 miles southeast of San Angelo, Tom Green County. Drainage area. 4,492 sq mi, of which 275 sq mi is probably noncontributing. Gage-height record. Water-stage recorder graph except 8 p.m. Apr. 26 to 8 a.m. Apr. 27, for which graph was drawn on basis of floodmark and records for Lake Nasworthy. Datum of gage is 1,776.79 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 106,000 cfs 3 p.m. May 9 (gage height, 39.30 ft in gage well, 39.8 ft from floodmarks). 1915 to March 1957: Discharge, 230,000 cfs Sept. 17, 1936 (gage height, 46.6 ft, from floodmarks), from rating curve extended above 110,000 cfs on basis of slope-area measurements of 167,000 and 230,000 cfs. Maximum stage known since 1854, 47.5 ft Aug. 6, 1906, from information furnished by local resident (discharge, about 246,000 cfs). Other large floods are known to have occurred in August 1882 and April 1900. Remarks. No spill from San Angelo Reservoir on North Concho River during period. TEXAS AND ADJACENT STATES B195

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 5.1 526 4,070 11. .... 12 12,000 227 21 10 1,220 23 2 5.1 422 2,070 12 11 12,700 1,020 22 58 65 23 3 5.1 317 233 13 10 18, 700 61 23 260 54 23 4 5.4 51 1,260 14 10 1,210 34 24 288 198 23 5 6.6 36 58 15 10 65 27 25 101 1,440 34 6 8.0 33 43 16 13 54 25 26 9,280 1,670 175 7.- _ _. 9.0 30 36 IT- 12 158 25 27 24, 700 6,230 71 8 8.0 27 152 IS.. 12 17,900 25 28 5,550 85 53 9 .... 12 39,500 168 19 11 6,060 24 29 3,700 52 69 10 12 888 175 20 11 98 23 30 2,910 44 58 31 1,680

Monthly mean d iseharge, in cubic feet per 1,568 3,984 344 Runoff, in acre-ft>et 93, 310 245,000 20,450

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April ^5 April 28 Con. May I Con. 1.77 86 6.40 3,030 3.95 1,080 4.52 1,470 8 ------3.30 650 April Z6 8 ------4.75 1,640 10 - - 2.40 233 9 4.55 1,500 2.07 144 1.41 40 10. 3.82 984 1.86 102 2 ._ -... 4 00 854 19 3.23 608 19 1.86 102 3 -... .. 4.60 1,180 4 14.30 11,500 May8 5 20.50 21, 800 6 -- . 21.40 23,200 3.33 668 1.28 28 21.60 23, 600 2-. ------4.18 1,240 10 25.00 30, 000 3 5.47 2,210 May 9 11 28.00 38,000 4 7.50 4,100 12 29.50 42,800 5 9.05 5,760 1.47 47 9.69 6,460 7.00 3,600 April W 9.72 6,490 3 - 16.60 15, 900 8. ------9.30 6,030 19.85 20,800 30.00 44, 500 10 7.89 4,490 5 -- 19.87 20,800 3 31.80 52,100 12m 8.60 5,260 6 19.28 19,900 8.88 5,570 7...... 19.10 19,600 5 33.45 60, 700 8.75 5,420 8------20.50 21,800 6 - 62, 000 6.50 3,120 9 ----- 24.10 28,200 7 - 33.67 62, 000 5 - 5.47 2,210 10 27.00 35,000 8. ------7...... 7.59 4,190 11 30.00 44,500 9 ------39, 500 9 5.00 1,830 12m 33.10 58,600 10.-.. ------20.00 91 finn 10 . ------36.60 81,200 14.00 12,100 3.38 698 2 ----- 38.75 99,500 10.00 5.15 1. 950 3 39.30 106,000 9 7ft 6,560 4 ------38.90 101,000 9 7Q 6,570 36.70 81,900 9 cc 7 ------31.30 49,800 4 8.65 K Qon 7.85 8 27.00 35, 000 5-. .-. ------6.85 3,460 2 ------8.34 4,970 9 20.00 21,000 6..--.--- - 5.10 1,910 8.37 5,010 10 12.75 10,400 6.60 7.40 4,000 11- ___ -- 9.75 6,520 8 7.78 4,380 8--. ------4.85 1,720 12 - 6.50 3,120 10... ------7.89 4,490 9 3.70 900 12... ------6.84 3,450 10 ------3.25 620 May 10 11 3.27 632 April 28 12m.. 4.10 1,180 3.40 710 6.60 3,220 3 6.10 2,760 6.70 7.46 4,060 4 8.75 5,420 3 .- 6.82 3,430 3...._ ------6.85 3,460 5 8.05 4,660 7 60 A onn 3,030 6 ------4.60 1,530 K 9 45 6_.------6.65 3,270 7------3.15 562 9 89 6,600 7... ------6.58 3,200 9 2.35 218 8 - - .._ 9 89 6,600 9- - - 5.55 2,280 12m 2.00 127 g 11.50 8,6£0 10 5.10 1,910 1.82 95 10 16.60 12 . 4.87 1,730 12 1.72 79 11 17.35 17, 000 12 m-_. _-__._ 15.00 13,500 May 1 May 11 12.00 9,300 2 9 OK 6,080 4.17 1,230 9 a.m - 1.66 70 3. ... 8.15 4.760 6 ------4.12 1,190 10 15.00 13, 500 B196 FLOODS OF 1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957- Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May 11 Con. May 17 May 25 Con. 11 a.m... __ 21.00 22,600 1.47 47 6.55 3,170 12m.. . 22.30 24, 700 1.58 6.78 3 0.QA 20.00 21,000 1.83 96 8.60 5,260 2 . 17.65 17,500 2 en 265 2 9 20 5,920 3 17.40 17,100 12 ...... 7.60 9 in 5,810 4.-. . . 20.00 21, 000 4,100 5 ... 20.85 5 . 4.20 i 9 ^n 7 19.65 20,500 6 - 3.00 AQ(\ 9 19. 60 20,400 9,300 2.00 10 18.42 18,600 2 11,600 1.85 100 11 ------17.75 17,600 14,200 12 16.70 16,000 5 _ _ 16.75 16.100 May 1H 6 17.00 73 7 18.90 19, 400 1.56 57 16.15 15,200 8 20,100 2.12 2.. . 15.25 13,900 12m.. 19,800 5.50 2,240 3 13.35 11,200 1 Q ce 20, 300 10 14.50 19 fifWl 4 ----- 9.80 6,580 20.10 91 onn 11 16.45 15,700 6 5.50 2,240 7.. . 15,700 T...... 1,000 i Q en on Tnn 8 2 no 10 is fin 18,900 Mayg? 9 2.92 440 17.00 10 2,150 12 14 43 12 ' 700 i e c A 14 onn 11. . . 7.50 4,100 i ^ nn 10,700 12m._ . S on 5,590 7 400 13.50 n 4.no 4 9 nn 5,700 2. --. ___ - 18.00 12.25 9,650 5 .... S nn 4 600 3 .... . 19.20 19,800 11.55* 8,720 6 7.15 3,750 4. . 20.50 91 snn 4 ...... 8 onn 7 6 EA 3,120 5 . 20.82 22,300 5 ... . 8.65 5,320 7 80 4 4nn 6 ------19.50 20,200 6 ...... 7 7«i 4,350 9 9.15 5,860 7...... 18.83 7...... 7.68 A 9cn 10 n an 8 18.95 19,400 9... 8 AK 5,100 11,600 10 91 snn S fisn TO. Q7 12 21.50 23,400 H 99 8 9on 1 9 QK 10,600 8,060 12.10 9,440 May 13 2 7,400 8.35 4,980 3...... 10. 43 7,320 6.. 6.87 3,480 1 a.rn __ .... 21.80 23,900 4 10.56 7,470 8 6.65 3,270 2... ------21.85 24,000 5 _ 10.50 7,400 4 40 1,390 3 21.65 23,600 9 OK 5,980 3,15 eco 5_ 20.35 21,600 7 . 8 nn 4,600 12- 202 6 17.65 17,500 8 7.84 7 ----- 13.95 19 nnn n 5.00 I con 8 15.00 13,500 10 - 3 Qfl 1 040 9 17.60 17,400 2 90 4°.n 123 10 19.10 19,600 12 2 j.fi 1.83 96 12m.-. 20.00 21,000 1.67 72 91 nn 22,600 1.56 57 20.47 91 ann 3 19.80 20,700 2.10 May 89 6 19.40 6 .... 1 90 109 1.51 51 8 . IS 7O IQ inn 12 m.. 1 7^ fin 9 ...... 17.60 17,400 1 fiQ 10 in unn 11 ... 8.65 5,320 May gl 12 m ----- 1.45 44 12 7.35 3,950 1 40 39 1.55 56 May 14 12m... 10.50 7,400 May 31 13.10 10,800 1 a.m.. ... 4.60 1,530 2 10.00 G Qfvfl 1 40 39 2 ... 3.47 7 en 5 nn 1,830 1.60 62 3 5.50 3 on 650 5 ... 1.80 91 4. _ .... _ .. 8,200 5 ...... 300 7 - - 202 5 ...... 11.45 8,580 6 2 Oft 191 2.44 246 6 ----- . 6.00 2,670 1 Q7 122 236 7 3.62 QAQ 12 1 80 2.04 137 8 ...... 2 00 one 4 8 nn 4,600 9 ..... 2 J.fi ORQ 5...... 8 An 5,260 12 m...... 2 no 100 6 . 7.50 4,100 6 p.m...... 1.80 91 9 1A. 214 1...... 8.43 5,070 12 . 1.68 70 7 8>; 4,450 May 15 9 7.63 4,230 7.55 4,150 12 m...... 1.62 65 218 7.17 3,770 6 ...... - 2.50 265 9 ...... 2.46 252 12 p.m.. 1.48 48 10...... 5.15 1,950 1 a.m .... , 7.90 4,500 TEXAS AND ADJACENT STATES B197

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957- Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

June I Con, June % Con. June 4 Con. 11.55 8,720 10.50 7,400 2.45 249 9,900 8. .... ----- 10.35 7,220 10 . . 9 1ft 170 14.00 12,100 9...... 9.50 6,250 12m...- . 1.96 120 5...... 14.37 12,600 10-- 8.65 5,320 1.83 96 6 - 12.70 10,300 11 7.15 6 . 1.73 on 9.25 5,980 12 6.30 2,940 12.. . 1.63 66 8 7.50 4,100 9 6.36 2,990 JuneS 11...... 7.25 3,850 2.32 208 12m.. 7.32 3,920 4.40 1,390 7.30 3,900 2 3.15 562 2 6.50 3,120 3.-.-- .-. 2.55 282 2.38 227 4 ------4.85 1,720 5. 2.07 144 6 3.30 650 5 3.60 835 8...... 1.89 107 7...... 3.23 608 6.__ ...... 2.85 405 12m.__ 1.75 84 8 2.88 420 2.47 255 12p.m... _ . 1.58 60 10 2.68 332 9...... 2.07 144 7.00 3,600 12 1.87 104 June 4 12m... 8.85 5,540 5.00 1,830 9.00 5,700 2. __ ...... 8.45 5,100 2...... - 6.90 3,500 3 ...... 11.50 8,650 3. ... 3.96 1,080 1.82 95 4 . 10.00 6,800 4 ...... 3.00 480 12m...... _ 1.74 82 5...... 6.15 2,800 5 2.47 255 1.67 72 6...... 4.90 1,760 6 2.18 170 4...... 6.00 2,670 7 ...... - 3.90 1,040 1.93 114 5...... 10.15 6,980 8...... 3.00 480 12 1.76 85

138. CONCHO RIVER NEAR PAINT ROCK, TEX. Location. Lat 31°31', long 99°55', near left bank on downstream side of pier of bridge on U.S. Highway 83, 0.2 mile north of Paint Rock, Concho County, and 2 miles downstream from Kickapoo Creek. Drainage area. 5,538 sq mi, of which 275 sq mi is probably noncontributing. Gage-height record. Water-stage recorder graph except 9 p.m. May 12 to 3 p.m. May 14 and 12 m. May 27 to 4 p.m. May 30, for which graphs were drawn on basis of comparison with records of nearby stations. Datum of gage is 1,574.43 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 79,300 cfs 4 a.m. May 10 (gage height, 31.95ft). 1915 to March 1957: Discharge, 301,000 cfs Sept. 17, 1936 (gage height, 43.4 ft, floodmarks), from rating curve extended above 85,000 cfs on basis of slope-area measurements of 144,000 and 301,000 cfs. Flood in August 1882 reached a stage of about 39.9 ft. and flood in August 1906 reached a stage of 39.5 ft; information from local residents. Remarks. No spill from San Angelo Reservoir on North Concho River during period. B198 FLOODS OF 1957

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

I... -.-. 1.5 1,590 7,4CO 11 1.0 6,440 212 21 0.9 927 51 2 1.5 299 1.5CO 12 .7 16,000 1,600 22 - 4.5 2,380 37 3 51 818 2,360 13 .4 22, 100 667 23 . 1,780 1,110 37 4_ 26 424 1,290 14--.-. .3 7,210 156 24 475 478 35 5 9.8 140 348 15 .6 470 90 25 323 800 33 6.--.-. 5.5 89 201 16 .6 233 65 26 2,570 1,190 32 7 3.2 61 123 17 .. .6 164 54 27 32,200 8,520 96 8 -.. 1.5 52 92 18 - .3 12,200 48 28 7,110 479 115 9 . 1.0 18, 200 156 19 .6 13,900 45 29 3,480 236 59 10 1.0 27,800 207 20 .3 2,330 118 30 2,800 162 51 31 627

Monthly mean d ischarge, in cubic feet per , 1,695 4,756 576 Runoff, in acre-fe st 100, 900 292, 400 34, 270

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 25 April 30 May 10 Con 12.59 184 1 c OO 10 a.m. ... 25.00 31,600 3 ...... - 3,520 11-. ------18.50 11, 800 April 2Q 14.92 2,810 12m___------17.05 7,590 7 -- - 1,920 16.25 5,560 12 m...... 12.46 126 14.25 2 15.00 2,950 12.46 126 14.90 2,780 3 14.34 1,950 5 ...... 12.52 1 *°. 10 15.50 5 - 13.60 970 6 ----- 12.82 15.81 4,570 8 12.95 385 7- ...... 13.20 575 14.80 12 12.55 166 8 ...... 15.35 3,600 14.16 1,690 9- ... - 18.00 13.75 1,140 May 11 10 19.65 9. ... 13.83 1,240 12 21.46 91 (\f\f\ 10 U CC 2,260 12.28 59 19 15.00 10 12.14 27 11 12. 45 122 13.10 495 2a.m...... 22.38 OQ 7nn 13.53 893 4...--- _ -... 22.28 93 4nn 15. 00 2,950 3 - 13.30 665 9 ...... 24.23 29, 300 14.80 2,630 4 ... . 15.60 4,100 12m. ..--.._. g 14.14 1,670 5 - 17.70 9,400 41,200 13.65 6 19.80 16, 000 7---- _-_ 28.10 A A onn 13.40 755 8 22.04 22,700 9 ...... 27.45 An Qf\f\ 13.12 511 9 - 22.35 23,600 10 26.25 35,600 22.20 23, 200 11- -.---..... 23.85 OQ onn 12 21.40 20,800 12 19.75 1 f\ Onn 12m...... 12.72 248 MnyH 12.60 189 21.26 20, 400 la.m______17.85 9,850 2. - - 21.29 20,500 2 _____ .... 16.50 6,150 21.56 21,300 4...... 15.44 3 Ton 21.48 21,000 7- ...... - 15.72 4,370 12.29 62 20.96 19,500 11 15.54 10 19.95 19,400 16.40 5,900 May 9 12 m..------18.30 11,200 4 ...... 16.97 7,370 17.05 7,590 6-...... 11 000 12.46 126 3 -- - 16.45 6,020 7-- ..... 18.70 1 O Cnn 7...... 13.80 1,200 4 . 16.50 6,150 8...... 18.83 8 16.75 6,780 5 ----- 16.90 7,180 9...... 18.57 12, 100 9 .... 18.40 11, 500 6 _ 17.80 9,700 10 18.00 10, 300 10 . 20.00 16,600 7- 18.75 12,600 12 16.50 6,150 23, 500 9 20.50 18, 100 3 22.49 24, 100 10 21.00 19,600 5. 23.62 27, 500 12 .- _ --- 22.00 22,600 2 a.m __ .... 15. 31 3,520 24.84 31,100 May IS 5...... 14.32 1,920 10 26.67 37,300 11...... _ -_ 13.61 12. - 49,600 22.10 22,900 12m... 13.64 1,010 4 21.60 21, 400 1 p.m... __ . 14.90 2 780 7 ------22.30 23,500 2 4,660 10 22.80 25,000 3...... 16.24 5,540 01 on 77,200 21.60 21,400 4...... 5,630 4_ . 7Q ^nn 20.70 18,700 7 ...... 15.93 4 840 qi 79 7. ----- 21.40 20,800 11. ____ . 16.00 49,600 10 22.00 22,600 12. 15.45 3.800 9 . 27.50 41, 100 12 21.90 22,300 TEXAS AND ADJACENT STATES B199 Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May 14 Mayn Con. May 31 4 a.m . _ --.. 20.30 17, 500 14.00 1,470 19 ^R 171 6 ... 18.00 10, 300 5 13. 58 QAQ 12 60 IRQ 8 16.20 5,450 8 13.22 12m_-. __ ARQ 10 14.90 2,780 12.90 13.78 1 1P.H 12m-.. _ 17.00 7,450 3 16.00 5,000 2 ...... 13.70 1,080 2 p.m. _ -. 16.10 5,220 4 - 17.40 8,550 5 13.43 4. .-. ----.. 14.76 2,570 5. 17.66 9 OOfk 13. 55 01 f\ 6 .... - - 14.10 1,610 6 ...... 17.00 7,450 q 13.93 1,370 8 13.81 1,210 7 . 1 E EE 4 flftft 10 14.08 1 580 10 13.58 948 8 ...... 14.72 2,510 12 13.97 1,430 12 13.42 776 10 _ - 13.96 1,410 12 . 13.60 970 May 15 May £9 14.60 2,330 12m- 12.98 406 2_ ...... 6,400 12 p.m-__ .... 12.80 290 13.30 665 3 .. 17.55 8,960 8 ...-.. 13.00 420 4..- ...... 17.90 10, 000 May 16 8 . 17.34 8,380 May 24 10 17. 95 10, 200 12m--... . 12.68 227 12m...... 10 KC 19 Oftft 12p.m-_ 12.60 189 12.80 290 18.55 3...... 17.60 9,100 May 17 May 85 4 _.._ 16.85 7,040 6. _ -- 15.85 4,660 12m.-.-. . 12.54 162 19 70 10 3 89ft 19 9 QQQ 12 p.m... . 12.50 144 6 ...... 12,89 14 97 ' 12m. __ .... 19 87 332 May 18 12.86 326 9 ...... 13.65 1,020 2 a.m - - 12.48 135 10 15.60 4,100 14.12 1,640 8 12.72 248 11 16.00 9 ------13.54 904 9- -- 3,900 12 15.93 4 QAt\ 10 ...... 13.60 Q70 10 ------17.90 10, 000 14.09 1 600 11-. ------19. 25 14, 300 14.37 1,990 20.80 19,000 3:...... 14.36 1,970 5 ------21.80 22,000 1 C 10 3,160 6 ...... 13.96 1,410 7 21.88 22.200 3 ...... 14.65 9 400 12 13.41 766 12 - 21.75 21, 800 4...... 14.54 2,240 5.- __ .. ... 14.31 1,900 May 19 7...... 13.88 1,300 11 13.38 737 14.00 1,470 5 a.m ------21.90 22, 300 13.12 511 2...... 16.00 5,000 7 21.65 21, 600 19 QQ 4...... 16.77 6,820 10 20.00 16, 600 12...... 19 on 6 16.26 5,580 12m..-- -. 18.40 11,500 8 15.35 3,600 17.70 9 400 Man 07 10 14.56 2,270 3...... 16.55 6,280 19 ftft 338 12m..... 14.02 1,500 4...... 16.29 5, 650 16.10 5,220 13.40 755 5- _ ------16.34 5,760 18.30 11, 200 12 13.00 420 8.. -- 17.30 8,280 5 1Q 7fl 15, 700 9 ----- 17.45 8,690 6 91 f\f> 10 8,690 7 25, 900 12 17. 33 8,360 28, 100 12.88 338 9...... 22.75 24, 800 6 ...... - 12.92 364 May tO 10 21.00 1Q fiOO 9 ...... 12.88 338 11 . -- - 19.70 15, 700 10 13.00 420 16.20 5,450 19.00 13, 400 11 15.65 4,210 6--_---____-.. 16.65 12m...... 15.88 4,730 8. - --- 14.50 15.10 3,120 15.05 3,040 10. --. 1,470 4 ... 14 15 1 fiSO 4. . 14.25 1,820 12m_. _._---- 13.67 12 13.43 6 .... 13.80 1,200 13. 16 543 9...... 13.38 737 12 10 QR QQE May 88 12 . 13.15 535 13.19 567 Mayil 435 12.83 308 302 12m 19 79 12.85 320 203 May 29 12.75 264 9.------. 15.50 3,900 12.68 227 4...... ------12.90 350 10 ---. 16.38 E Qfta 12 60 6 ~ 12.89 344 237 12__- - May 30 12...... 12.70 May n 12m...... 12.54 162 2 a.m...... 14.35 1,960 12.48 135 B200 FLOODS OF 195?

139. COLORADO RIVER AT WINCHELL, TEX. Location. Lat 31°28'05", long 99°09'45", near left bank on downstream side of pier of bridge on U.S. Highway 377, 0.3 mile south of Wiiichell, Brown County, 6.2 miles downstream from Home Creek, and at mile 561. Drainage area. Approximately 24,580 sq mi, of which 11,900 sq mi is probably noiicontributing. Gage-height record. Water-stage recorder graph except May 30, 31, June 6-11, for which graphs were drawn on basis of trend of recessions and one gage reading. Datum of gage is 1,264.86 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 63,000 cfs 7 p.m. May 13 (gage height, 46.00ft). 1923-34, 1939 to March 1957: Discharge, 76,100 cfs Oct. 15, 1930 (gage height, 51.8 ft). Highest stages since 1882, 62.2 ft Sept. 19, 1936, and 56.2 ft Aug. 8, 1906; information from Gulf, Colorado and Santa Fe Railway Co. Remarks. Some regulation by Lake J. B. Thomas, Lake Colorado City, Oak Creek Reservoir, Lake Nasworthy, and San Angelo Reservoir.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 38 9,050 6,480 41 30, 100 1,120 21 2,390 7,430 750 0 32 5, 210 21,400 12..... 39 32, 700 2,220 22... __ 1.110 3,600 910 3. 26 1,910 27, 600 434 56, 000 6,100 23 6. 970 7,080 537 4...... 922 2,150 25, 000 14 345 58. 300 2,400 24 5,910 19,000 383 5...... 345 1,440 9,810 15 151 34, 000 1,320 25 1,450 6,540 303 6...... 172 725 3.250 16 89 5, 530 1,210 26 3,010 7,920 264 98 446 1,760 17 - 69 3,050 1,040 27 32, 200 15, 100 224 8 64 333 1.3SO 18 53 15, 100 816 28 32, 200 20, 500 198 9 43 1,980 1,240 19 3,740 27, 400 705 29 21,000 6,470 180 10-- 32 18, 900 1,190 20 __ 1,940 29, 100 1,160 30 10, 100 2,790 252 31 1,240

Monthly mean d ischarge, in cubic feet per . 4,167 13,910 4,040 Runoff, in acre-feet 248, 000 855,100 j 240,400 I

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 195'i

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 18 April 20 April S3 12p.m. ______2.95 8.75 2,830 5.41 675 9 7.68 2,020 4 7.00 1,590 April 19 1,710 5.-. ------7.10 1,650 1, 640 6 ------8.40 2,550 40 1,310 8 11.00 4,700 2.. ______3.85 176 6.10 10- 13.00 6,480 3.______A-t Q 15.13 8,620 4 A nri7 ®1 5___ _.____ _ 17.35 10, 900 5. ______1, 500 7... ------18.43 12,100 6______7.95 2,220 5.66 805 8... --_--_--_. 18.62 12, 300 8 ...... 11.40 6 6.85 1, 490 10 18.18 11, 800 9___. ______12.33 8.65 2,750 12 17.20 10, 800 11 ______12.68 6,180 8 9.70 3,600 12.00 10 4,020 April $4 4... ______15.82 9,360 5 ______10.30 2,280 14.90 8,390 6____-_. ______10.67 4,440 12 ______7.18 1,710 12m- - 12.05 5, 600 10.63 9.70 3,600 9 11.02 4,710 8.93 2,970 12.. ______10.00 3,850 12D.m _ 5.48 710 12 7.93 2,200 TEXAS AND ADJACENT STATES B201

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Tlour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 25 MayS May 16 Con. 7.22 1,730 4.46 303 10.70 4,420 12m ______6.64 1,370 12 9.92 3,780 6.22 1,110 May 9 12 ______6.00 987 May 17 4.46 303 April 28 5.25 600 8.94 2,970 6 6.42 1,230 10p.m. 8.31 2,480 5.76 854 8_..__. ...____ 6.75 1,440 12 - 8.80 2,860 5p.m ... 5. 60 772 8.00 2,250 6 6.00 987 8.42 2, 560 May 18 7 9.15 3,150 8.63 2,730 8.-___. ______12. 95 6,440 9 8.60 2,710 11.35 5,010 10.00 9, 540 12 9.28 3,250 16.00 9,540 10 18. 50 12, 200 19.30 13,100 21.00 15, 200 May 10 9_____. ------23.00 17, 600 12 23. 70 18, 400 25.04 20, 100 11.65 5,240 25.45 20, 600 April 27 4 ------16.50 10, 000 2 _____ 25.58 20, 800 6 ------19.50 13, 400 25.13 20, 200 29.00 25, 500 22.83 17,300 6_ 23.75 18, 400 ^ 33. 00 31, 700 12m. .- 25.18 20, 200 21. 00 15,200 6_ . ______36. 00 36, 800 28.85 25, 300 20.15 14, 100 37.00 38, 800 12-.-. ------32.18 30, 400 11- - 19.86 13, 800 9_.______37.78 40, 400 12 20.02 14, 000 11 ... .. 37.00 38, 800 May 11 35.50 35, 900 May 19 i-. ------33.00 31, 700 34.85 34, 700 7 31. 30 29, 000 35.40 35, 700 21.70 16, 000 30. 50 27, 800 8.------35.48 35, 900 4 _ --__ 24.00 18, 800 12 30.43 27, 600 35.37 35, 700 8 28.00 24, 100 jj 34.20 33, 600 12m 31.00 28, 500 April 28 30.85 28, 300 33.40 32, 300 27.88 23, 900 8------35.07 35, 100 31.00 28, 500 27.52 23, 400 10 . 35.70 36, 300 8------32.08 30, 200 27.70 23, 700 12 36.12 37, 000 34.00 33, 300 9 ______28.95 25, 400 6______35. 24 35, 300 12 - - 30.70 28, 000 May 20 8 35. 53 36, 000 10______._._-_ 35. 60 36, 100 May n 36.28 37, 400 12 ___ _ _ 35.20 35, 400 36.17 37, 100 31.70 29, 600 6.. ----- 35.65 36, 200 ,4pri. 39 5______32.00 30, 100 34.10 33, 500 10 32.00 30, 100 12m- - 31.85 29,900 33.15 31, 900 32.25 30, 500 28. 53 24,800 6 ______30.10 27, 200 33.55 32, 600 8 ------25. 63 20, 800 9 ______26.78 22, 400 35.65 36, 200 12 22.25 16,600 12m. ______24. 50 19, 400 12__ _ 39.10 43, 100 20.64 14, 800 May gl g 18.25 11, 900 May 13 12 16.93 10, 500 18.05 11,700 42.60 51,500 14.15 7,590 .4pn7 30 44.45 57, 200 12.30 5,820 45.65 61,600 10.85 4,560 10.40 9,940 46.00 63, 000 12 9.98 3,830 5 ______16.16 9,700 45.53 61,100 9...... 16.70 10, 300 17.03 10, 600 May 14 17.13 10, 700 8.67 2,760 16.77 10, 400 45.05 59, 300 8.45 2, 590 1 9 15.64 9,180 12m 44.77 58, 300 9.55 3,480 44.50 57,400 11.00 4,700 May 1 43.85 55, 300 8__. ------11.25 4,920 10- 10.71 4,430 15.24 8,730 May IS 12 . 10.05 3,890 15. 55 9,090 15. 40 8,890 43.12 53, 000 May 23 5 ' _-"""]_ 15. 13 8,620 41.52 48, 600 8.32 2,490 15. 45 8,940 10 37.50 39, 800 7.93 2,200 15.88 9,420 33.00 31, 700 10.00 3,850 16.18 9,720 28.00 24, 100 11 12.15 5,680 12 15.88 9,420 23.55 18,200 12m__ __. _ 12.86 6,350 9 _____-__-.__ 20.55 14, 700 12.88 6,370 May 8 16.50 10, 000 3_ 12.36 5,880 14.75 8,240 12.35 5,870 12. 85 6,340 May 16 5 _.----.__--- 13.95 7,390 10 ------11.63 5,220 I. ------16.85 10, 400 10.40 4,200 13.87 7,310 9 ------20.00 13,900 8 9.08 3,090 12.65 6,150 10 22.15 16,500 12 _ __ 8.42 2,570 12m .. 11.42 5,030 26.90 22,600 6560 870 6 2 14 B202 FLOODS OF 1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May 24 May 28 Con. June 4 Con. 31.00 28,500 28.93 25, 400 29.92 26,900 3...... 32.25 30,500 10 28.05 24,200 26.92 22,600 4 33.05 31, 800 24.85 19,800 12 24.00 18,800 5...... 33.03 8 20.56 14,700 7. 31.45 29,200 12 16.93 10,500 9__ ---. ------28.90 25,400 12m.. . 24.00 18, 800 20.20 14,200 1Q fifi 12,800 8 16.80 10,400 5 16.26 9 QAfi 15.00 8,490 11 15.38 8,870 6... . 15.45 8.940 6 14.18 7,620 14.85 8,340 8 . 14.64 8,080 9 13.68 7,130 6...... 13.20 6,680 10 14.80 8,290 11.91 5,470 12 - 11.55 5,140 12 15.18 8,670 12 10.18 4,000 June 6 May K May SO 10.10 3,940 15.37 8,860 12m..- 8.59 2,700 12m- 8.85 2,910 5 . 15.15 7.28 7.80 2,110 8 - 14.32 7,760 12m- - 12.90 6,390 May 51 11.00 4,700 10 10.38 4 l&fi 6.30 1,160 6.16 1 ' 080 12 11.28 5.77 854 June 1H May $6 June 1 12m-.- 6.08 1,040 11.74 5,320 5.62 778 6.08 1,040 4...... 11.82 5,390 6 6.85 1,500 4 8.25 2,440 7 12.45 P. - 9.60 6 10.00 3,850 11 12.75 12.90 6,390 9- ..... 11.40 5,060 13.50 6,960 13.46 6,920 10 - 11.58 5,170 4.------.- ... 16.00 9,540 6 17.20 10, 800 12 11.38 5,040 7. . _ .--- 17.50 11, 100 12 - - 20.20 14,200 12. 18.66 19 4nn June 2 10.73 4,450 23.52 4-. ------10.40 4,200 19.27 13, 000 12m- 26.75 22, 400 T...... 11.20 4,880 5 - 20.30 14, 300 OQ CC °4 900 10 13. 15 6,630 7 ... 20.65 14,800 12 29.15 OK 7flA 12m--. 14.20 7,640 20.33 14,300 14.78 8,220 5 . 20.60 14,700 6 ... . 14.05 7,490 7 21.60 15,900 9 12.45 5,960 9 23.33 17,900 30.08 27,100 12 - 10.70 4,420 12 26.00 21,300 12m-_ 30.73 28,100 30.75 28, 100 May 98 12 31.00 28,500 9.50 3,420 6 8.75 2,830 28.15 24,300 June 4 12m--. 7.82 2,120 5 - 28.98 25, 500 31.05 28,600 7.30 1,780 6 . 29.14 oe 7fiA 5 ...... on OA 28,200 12 6.94 1,550

140. HORDS CREEK RESERVOIR NEAR VALERA, TEX. Location. Lat 31°50'00", long 99°33'35", at outlet works structure near right end of dam on Hords Creek, 5.3 miles northwest of Valera, Coleman County, and 8.8 miles west of Coleman. Drainage area. Approximately 48 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is at mean sea level, datum of 1929. Maxima. April-June 1957: Contents, 9,970 acre-ft 8 p.m. May 23 (elevation, 1,902.44ft). 1948 to March 1957: Contents, 12,790 acre-ft May 1, 1956 (elevation, 1,906.86 ft). Remarks. Reservoir is formed by a rolled earth-fill dam. Deliberate impound­ ment of water began Apr. 7, 1948, and dam completed June 1948. Outlet TEXAS AND ADJACENT STATES B203

works consist of 3 concrete conduits 2 of which are controlled by slide gates, elevation of invert, 1,856.0 ft; the third conduit, elevation 1,900.0 ft at service spillway, is uncontrolled. In addition, there is a 500-ft uncontrolled broad- crested emergency spillway (elevation, 1,920.0 ft) located in a saddle on the right bank. Capacity, 25,310 acre-ft at crest of emergency spillway and 8,640 acre-ft at crest of service spillway. Reservoir is operated for flood control and municipal water supply. Records furnished by U.S. Army Corps of Engineers. Elevation, in feet, and contents, in acre-feet, at 12 p.m. of indicated day, 1957

Alwil May June Day Elevation Contents Elevation Contents Elevation Contents

1 _-. . -..-_ _-_--_. 5,840 7 Sfifl 1 Qnn ftl Q nfin 2...... _ . ___ . ____ . .... 1 893 60 K QAf\ 1 SOS 41 7 Sfifl 1 on 9 91 3 ...... 1, 893. 72 5,890 1, 898. 55 7,920 1 Qn 1 n ^ 9 iszn 4...... 1,893.70 1, 898. 57 1 orn n4 5...... 1,893.68 5,870 1, 898. 55 7,920 6 __ ... _ . _____ ...... 1,893.66 1 ftQft tt 7,910 1.9C0.10 ft ann 7....-...... -..-....-..-. 1,893.63 5,850 1 ftQft M 7 QPiO i Qf\f\ no S oon 8 ... i ftQft ^n 7,900 1 Qfdl fl7 8,670 9 _...... _._-..-.-. . i SQ^ fin 5,840 1 ftQft fiS 7 980 8,660 10 - 1,893.58 5,840 1, 898. 67 7,980 1,900.02 8,640 11 1,893.58 5,840 1,898.90 8,090 1,900.00 8,640 12 1,894.11 6,030 1,900.10 8,690 13 6,030 1,901.19 9,260 1,9C0.08 8,680 14 ...... 1,894.08 6,020 1,901.08 9,200 1,900.06 8,670 15 ...... 9,140 1,900.02 8,640 16...... 1,894.08 6,020 1,900.87 9,090 1, 899. 96 8,620 17 . _ 1, 894.09 6,020 1.9C0.89 9, ICO 1, 899. 94 8.6CO 18 ...... 1 ftQ4 10 6,030 1,901.32 9,340 1, 899. 92 8,600 19...... 1, 894. 10 1,901.17 9,250 1, 899. 90 8,580 20 . _...... 1,894.09 1,901.05 9,190 1, 899. 88 8,580 21 6,020 1,900.94 9,130 1, 899. 85 8,560 22 ...... 1,894.29 6,100 1,900.68 8,990 1, 899. 82 8,540 23 1, 895. 47 6,570 1.902.40 9,940 1, 8S9. 79 8,530 24 ...... 1, 895. 47 6, 57C 1,902.14 9,790 1,899.76 8,520 25 _._-___...._.__._._ 1, 895. 46 6,560 1,902.31 9,890 1,899.72 8,500 26 .__..--____.._. 1, 897. 41 7,400 1, 902. 10 9,770 1,899.69 8,480 27 1, 897. 55 7.46C 1,902.07 9,750 1, 899. 65 8,460 28 . . ___._._____._.. 1,898.31 7,810 1,901.84 9,620 1, 899. 62 8,450 29 1, 898. 41 7,860 1,901.28 9,310 1, 899. 58 8,430 30 ...... 1, 898. 42 7,860 1.9C0.42 8,860 1, 899. 55 8,410 31 .- ._..-.____.______.._ 1,900.14 8,710 +2,010 +850 -300

141. HORDS CREEK NEAR VALERA, TEX. Location. Lat 31°50', long 99°33', on left bank about 7,500 ft downstream from Hords Creek Reservoir, 5.5 miles north of Valera, Coleman County, and 7.0 miles west of Coleman. Drainage area. Approximately 53 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 1,819.88 ft above mean sea level, datum of 1929 (U.S. Army Corps of Engineers bench mark). Discharge record. Stage-discharge relation defined by current-meter measurements. Maxima. April-June 1957: Discharge, 878 cfs 1:10 p.m. May 12 (gage height, 6.60ft). 1947 to March 1957: Discharge, 3,860 cfs Apr. 30, 1956 (gage height, 14.73 ft), from rating curve extended above 1,900 cfs by logarithmic plotting. B204 FLOODS OF 1957

Maximum stage known, 23.0 ft July 3, 1932, before construction of Hords Creek Reservoir; information from local residents (discharge not determined). Flood of July or September 1900 reached a stage 3.7 ft higher than that of July 1932 at a site 12 miles downstream at Cole man; information from local residents. Remarks. Flow largely regulated by Hords Creek Reservoir. At times runoff results from rainfall on area between reservoir and gage site. Maximum dis­ charge on May 12, 1957, was from runoff originating below Hords Creek Reservoir. Flow during period May 13 to June 4 was largely water spilled or released from reservoir.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1...... 0.1 0.8 14 11 0.1 17 1.8 21 0.1 26 0.4 2...... 0 .6 104 12..... 4.0 86 12 22 1.9 57 .4 3.. 5 6 .6 349 13 - .3 75 3.5 23 20 187 .3 4...... 4 .7 305 14 .2 33 2.5 24 .8 86 .3 5 . 2 .5 5.3 15...... 1 28 2.0 25 .4 129 2 6 . 1 .4 4.0 16...... 2 24 1.4 26 48 74 .2 7 1 .4 3.6 17- .1 22 1.0 27 7.5 28 .2 8...... 1 .3 3.2 18...... 1 52 .8 28 25 68 .2 9...... 1 2.3 2.8 19. . .2 37 . 7 29 2.4 146 .1 10...... 1 .6 2.2 20 .2 31 .5 30 1.2 232 .1 31 117

Monthly mean d ischarge, in cubic feet per s 3.99 50.4 27.4 Runoff, in acre-feet 237 3,100 1,630

142. BROWNWOOD RESERVOIR NEAR BROWNWOOD, TEX. Location, Lat 31°50', long 99°00', at outlet structure for irrigation canal just upstream from right end of dam on Pecan Bayou, a quarter of a mile down­ stream from Jim Ned Creek, and 8 miles north of Brownwood, Brown County. Drainage area. 1,535 sq mi. Gage-height record. Staff gage readings made once daily. Datum of gage is 0.50 ft below mean sea level, datum of 1929. Maxima. April-June 1957: Contents observed, 172,800 acre-ft 6 p.m. May 26 (gage height, 1,429.4 ft). 1933-41, 1944 to March 1957: Contents observed, 192,300 acre-ft May 2, 1956 (gage height, 1,431.4 ft). Remarks. There was flow over the spillway from Apr. 27 to June 18. Reservoir is formed by earth-fill dam, 1,580 ft long; first filled during flood of July 3, 4, 1932; dam completed in 1933 and operation began July 1933. Total capacity, 137,300 acre-ft at crest of emergency spillway (gage height, 1,425.1 ft). Un­ controlled emergency spillway, consisting of broad-crested weir 479 ft long, located 800 ft to left of dam. Reservoir can be drained by two 12-ft horseshoe- shaped reinforced concrete conduits with bottom of invert at gage height 1,330 ft. Water used for irrigation, and for municipal and industrial supply for city of Brownwood. TEXAS AND . ADJACENT STATES B205

Gage height, in feet, and contents, in acre-feet, at 6 p.m. of indicated day, 1957

Al)ril May Jume Day Elevation Contents Elevation Contents Elevation Contents

1... 1,417.4 89,420 1, 426. 1 144, 800 1, 425. 9 143, 300 2 1,417.4 89, 420 1, 425. 8 142, 500 1, 427. 0 151, 800 3 1, 417. 4 89, 420 1, 425. 6 141,000 1, 427. 0 151,800 4 _ .... 1,417.4 89, 420 1,425.6 141, 000 1, 426. 5 147,900 5 ...... 1,417.4 89, 420 1, 425. 5 140, 300 1, 426. 2 145,600 6...... 1,417.3 88, 890 1, 425. 4 139, 600 1, 425. 9 143, 300 1...... 1, 417. 3 88, 890 1,425.3 138, 800 1, 425. 7 141, 800 ^...... 1, 417. 3 88, 890 1, 425. 2 138, 100 1, 425. 5 140, 300 9 . 1, 417. 3 88,890 1, 425. 4 139, 600 1, 425. 4 139, 600 10. - 1, 417. 3 88,890 1, 425. 4 139, 600 1,425.2 138, 100 11.... _ ...... 1,417.3 88, 890 1, 425. 9 143, 300 1, 425. 1 137, 300 12 1,417.2 88,360 1, 426. 9 151,000 1, 426. 1 144,800 13...... 1,417.2 88, 360 1, 429. 1 169, 900 1, 426. 0 144, 000 14 . 1,417.2 88, 360 1, 428. 0 160,100 1,425.7 141, 800 15. 1,417.1 87, 830 1, 426. 8 150,200 1, 425. 5 140, 300 16...... 1, 417. 1 87, 830 1, 426. 0 144,000 1, 425. 3 138, 800 I?-....-..-. _ ...... _ ...... 1,417.1 87, 830 1, 425. 8 142, 500 1, 425. 2 138, 100 18...... 1, 417. 1 87, 830 1, 428. 5 164,600 1, 425. 1 137, 300 19 1, 417. 4 89, 420 1, 427. 9 159, 300 1,425.0 136,600 20...... 1,417.4 89,420 1, 426. 7 149, 500 1 494 Q 135, 900 21 1,417.4 89,420 1, 426. 1 144, 800 1, 424. 8 135, 200 22...... 1,417.4 89,420 1, 425. 8 142, 500 1, 424. 7 134, 500 23 1,418.9 97,640 1, 427. 4 155, 100 1, 424. 6 133, 800 24 ...... 1 419 1 98, 780 1, 427. 2 153,500 1,424.5 133, 100 25 ...... 1, 419. 1 98, 780 1,427.2 153,500 1,424.4 132, 400 26...... 1, 420. 5 107,000 1, 429. 4 172,800 1, 424. 2 131, 000 27. - 1, 426. 7 149, 500 1, 427. 5 156,000 1, 424. 1 130, 300 28...... 1, 426. 5 147, 900 1, 426. 5 147,900 1, 424. 0 129,600 29...... 1,426.5 147, 900 1, 426. 1 144,800 1,424.0 129,600 30 . 1, 426. 4 147, 100 1, 425. 7 141, 800 1, 424. 0 129,600 31...... 1, 425. 6 141,000 +57,680 -6,100 -11,400

143. PECAN BAYOU AT BROWNWOOD, TBX. Location. Lat 31°44'10", long 98°58'30", on left bank at downstream side of pier of abandoned Gulf, Colorado and Santa Fe Railway bridge, 1 mile north of Brownwood, Brown County, 6 miles downstream from Salt Creek, and 10 miles downstream from Brownwood Reservoir. Drainage area. 1,614 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 1,318.58 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation denned by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 17,400 cfs 11 p.m. Apr. 26 (gage height, 14.78ft). 1917-18, 1923 to March 1957: Discharge, 31,600 cfs Oct. 14, 1930 (gage height, 16.92 ft), from rating curve extended above 26,000 cfs. Maximum stage known, 21.7 ft in September 1900; information from Gulf, Colorado and Santa Fe Railway Co. Flood of July 3, 1932, probably the greatest known, reached a discharge of about 235,000 cfs as it entered Brown- wood Reservoir (computed from rate of change of contents in reservoir; data furnished by engineers of Brown County Water Improvement District No. 1). Remarks. Flood of Apr. 26, 1957, originated downstream from Brownwood Reservoir. There was uncontrolled flow over spillway at Brownwood Reservoir from Apr. 27 to June 18, B206 FLOODS OF 1957

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 0.5 2,440 1,260 11 0.3 1,680 350 21 6.6 2,610 296 2 .4 1,540 3,840 12 .3 3,510 986 99 3.1 1,520 302 3 .6 1,040 5, 510 13 .3 11, 400 1,990 23 393 2,700 289 4...... 6 1,690 3,480 14 .3 12,500 1,280 24 24 8,640 289 5 .6 974 2,480 .3 5,410 845 25 10 5,130 289 6...... 5 727 1,730 16 .3 2,630 578 26 4,730 11,600 289 7. ... .4 529 1,140 17 .3 1,580 410 27 4,110 10,300 296 8...... 5 400 804 18 .3 8,610 335 28 3,210 4,140 271 9 .4 371 590 19 348 11,000 305 9Q 3,200 2,240 26 10...... 4 631 442 20 25 5,190 298 30 2,800 1,370 3.8 31 1,030

Monthly meaa c ischar?e, in cubic feet per , 629 4,037 1,033 Runoff, in acre-fe et 37,420 248, 200 61,500

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gio-e Discharge height height height

April 25 April 30 Con. May 12 12p.m...... 80 7.3 3.89 2,820 2 a.m.- ...... 3.75 2,620 3.89 2,820 4... _ ...... 3.75 2,620 April 26 5 3 96 2, 930 12m.- 4.10 3,140 12 3.95 2,920 3 p.m... _ .. 4.31 3,480 12m...... 73 5.6 4.77 4,290 Q8 99 12 5.92 5,720 2- _ . _ .... 2.05 613 3 . 4.11 3,160 12 m...... 3.64 2,460 May 13 4-- .... 5.70 5,500 3.25 1,920 5 ...... 8.40 7,720 5.37 5,170 6 ...... 11.62 10,600 6 ... 8.75 8,000 8 ...... - 14.00 14,500 9 ...... 11.80 10,900 9 ...... 14.41 15,800 12m...... 2.95 1,520 11 . 13.18 12, 900 10 14.73 1,200 1 p.m...... 13.76 14, 000 11 ...... 14 7ft 17 4nn 3.. _ ----- 13.95 14, 400 12 14.65 Ifi onn 6------_ - 14.00 14, 500 12 14.00 14,500 April 27 12m.. 2.46 990 2.39 920 May 14 14.17 15,000 7...... 2.48 1,010 2. .... 13.20 19 2.52 1,050 3 a.m.__ ... 13.94 14,400 3...... 11.75 in son 6 13 83 14,200 4 ...... 9.15 9- - 13 62 13,700 5 ...... 6.62 6,300 12m, -- _ . 13 27 13,000 6- ..... 4.24 3,360 2.35 882 3 p.m...... 12 78 12,100 7- -...-... 3.01 1,600 2.50 1,030 6 - 11.98 11, 100 9 ...... 2 44 Q7fi 2 oe 1,400 9 - - 10.85 9,850 11 2.09 647 3.28 1,960 12 9.46 8,570 12m 2.03 596 11 ...... 3.78 2,660 2.23 771 12m... _ ... 3.92 2,870 3 . 2.94 1,510 3.92 2,870 May IB 5 ... 3.48 2,230 4 ...... 3.72 2,570 7 ...... 3.87 2,790 6. 3.17 1,810 3 a.m.. _ .... 8.08 7,460 10 4.27 3,410 2 CA 1,340 6 6.71 6,370 12 4.38 3,590 10 2.63 1,160 9 .... -- 5.80 5,600 19 2.54 1,070 12m. 5.30 5,100 April 28 4.72 4,200 12 4.33 3,510 12m- 4.11 3,160 3.97 2,940 2.07 630 7 . 3.99 2,980 May 16 12 __ 4.14 3,200 3.99 2,980 A T)TJ? <9Q 12m... . 3.71 2,560 2 00 12p.m...... 3.27 1,950 4.28 3,430 12m.. . 2.07 630 12m... 4.20 3,300 2.28 816 3.89 2,820 2 ..... 2.90 1,460 May 17 4 .... 3.85 2,760 A T\f{1 0/1 5 ...... 4 49 3,660 12m.. ... 2.93 1,500 6 4.54 3,870 10 p.m. . . 2.70 1,230 3.77 2 KA(\ 7_ . 4.44 3,690 11 3.05 1,660 12m... 3.85 2.760 12 ...... 3.87 2,790 12 3.68 2,510 TEXAS AND ADJACENT STATES B207

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May 18 May %4 May 31 5.03 4,740 9.64 8,710 2.38 911 7.05 5...... 6...... 7.70 7,160 7 ...... 10.94 9,940 8...... 8,400 8...... 10.99 9,990 10...... 10.03 9,030 10...... _.... 10.87 9,870 2.36 892 12m...... 10.48 9,480 12 in...... 10.54 9,540 6.- ...... 2.41 11.08 10. 100 9.73 8,780 10 . . . 1,010 12. 12.13 11,300 8...... 8.22 7,580 12...... 6.82 6,460 3 .... . 2.65 1,180 May 19 7...... 3.11 1,730 May #5 12..-...-.-... 3.46 2,200 12 63 7 ._-. _.. 12.81 12, 200 9...... 12.81 12, 200 5.... ._...... 5.72 5,520 12.72 5.30 4.13 3,190 12m...... 4.94 4,590 10 4.43 3,670 11.55 10, 600 4.78 4,300 4.73 10.84 9,840 5...... 4.78 4,300 5.67 5,470 12...... 8.67 7,940 7. _._.-___..._ 4.99 4,680 11.. __ ...... 5.69 5,490 12...... _ 6.74 6, 3,90 6.36 6,090 6.89 6,510 8 6.36 6,090 6...... 6.22 5,980 12m...... 5.99 5,790 8...... 5.79 5.590 8.48 7,780 5.35 5,150 11.04 9,040 4.86 4,450 6...... - 4.70 4,160 9...... 12.06 11,200 12...... 4.32 3,490 11 12.68 12, 000 13.39 13, 300 7 13.80 14, 100 3,360 8-...... _ 14.04 14, 600 12p.m__. .. 3.84 2,750 6 a.m...... 3.98 2,960 10...... 14.06 14, 700 12m...... 3.71 2,560 13.99 14, 500 12 p.m...... 3.24 1,900 1.67 315 May %% 13.67 13, 800 June n 12m...... 2.92 1,490 7 .. 2.66 1,190 11 11.60 10, 600 1.67 315 8.69 7,950 8 ---. 1.85 447 9 6.77 9...... 2.05 613 12. 10 2.08 639 2.58 1,110 1,030 2.56 1,090 2.60 1,130 6 . 2.82 1,360 1,310 9.. ------3.24 1,900 3...... 3.50 2.260 5,320 12 3.50 2,260 4...... 4.18 3,270 5,020 5...... 4.77 4,290 12m...... 4.64 4,050 8...... 5.74 5,540 4.25 3,380 12m. 3.35 2,050 12...... 7.72 7,180 3.94 2,900 3.00 1,590

144. SAN SABA RIVER AT MENARD, TBX.

Location. Lat 30°55', long 99°48', on right bank at bridge on U.S. Highway 83 in Menard, Menard County, 0.7 mile downstream from Las Moras Creek. Drainage area. 1,151 sq mi. Gage-height record. Water-stage recorder graph except May 3-6. Datum of gage is 1,863.05 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation denned by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 41,000 cfs 7:30 p.m. Apr. 19 (gage height, 15.97ft). 1915 to March 1957: Discharge, 130,000 cfs July 23, 1938 (gage height, 22.7 ft, from floodmark), from rating curve extended above 60,000 cfs on basis of slope-area measurement at 130,000 cfs. B208 FLOODS OF 1957

Maximum stage known, 23.3 ft June 5 or 6, 1899; information from local resident. Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1. ._ _ 5.4 58 404 11 9.3 2,720 81 21 .... 253 220 65 2...... 2.6 52 241 12 ... 8.9 6,620 82 22 123 3,180 62 3_ 133 54 158 13-.__ 11 12, 700 81 23 5,740 748 59 4 61 56 152 14_ 13 1,580 75 24 _._. 719 228 56 5 __ 22 54 143 15 12 244 73 25 148 252 57 6 12 53 m 16 12 162 70 26- 3,880 334 59 7__ _ 10 49 94 17_.-_. 12 134 69 27 1,500 6,130 54 8 . 8.9 49 87 18 .. 8.1 6,530 63 28 - 169 888 41 9_ _ 9.3 3,150 83 19. . 8,550 2,150 68 29 - 369 256 20 10 9.7 578 83 20 3,630 370 68 30 98 163 22 31 795

Monthly mean d ischarge, in cubic feet per s 851 1,631 92.9 Runoff, in acre-f« et 50, 660 100, 300 5, 530

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 18 April 25 Con. May 8 12 p.m...... 3.27 9.3 13.42 19, 300 12 p.m__ ___ . 4.13 49 7 13.22 18,000 April 19 8 .... 12.75 14,500 Ma* 9 10- 11.33 7,760 2 a.m ...... 3.41 15 12m__ 9.54 4,160 9 a.m. ____ - 4.13 49 5 ...... 3.54 20 s ii 10 11.80 9,100 7...... 3.55 20 6 8.91 3,340 11 11.90 9,400 11... _ ...... 3.48 17 7.76 12m.- ___-. 9.80 5,190 12m __ . _ . 3.52 19 19 7.48 1 p.m__- ._... 12.08 10, 100 6.50 1,000 2.. ______12.25 10, 800 2...... _ 5 OCA 3 11.40 8,100 3...... 11.08 7 oon 4 10.00 5,530 4 ..... ___ . 11.55 7.42 1,740 5 - 8.85 3,780 5 ..-...... 12.95 15, 700 6.87 1,300 6 8.10 2,850 6.. _ .. __ .. 14.20 25,500 9...... 5 QC 666 7 7.87 2,600 T...... 15.75 5.63 494 8 7.57 2,270 7:30... ------15.97 5.43 407 10 6.75 1,520 8 15.70 5 45 12- 6.17 1,140 9 ...... 14.35 26, 600 t. 10 299 10 13.30 17 800 12 5.05 244 May 10 12 ...... 12.07 10, 100 5.80 874 April W 5.44 661 4.64 128 6 5.39 636 5 a.m ...... 10.65 6,240 4.46 90 9 - 3.42 651 T...... 5,700 5.25 563 9 . . 9 en 4,100 4.93 415 12m.... _ S een 12 - 4.70 327 4 p.m...... 6.97 1,380 4.38 80 7 ... __ ... 6.28 000 4.42 85 May 11 9 ...... 5.93 5 . 102 12 5.60 480 9 88 11 a.m.. ._.... 4.48 248 7 ...... U QK 12m. _ ...._ 4.58 287 April SI 8 IQ cn 22, 700 1 p.m.... 6.00 1,000 1004 2-.- ___ - 7.88 2,610 5.20 10 iq no 16,200 3. ------9.00 3,970 12 m_. ______208 12 ..___ 4 . 11.15 7,600 4.63 146 11.97 9,680 11.98 9,720 A «*.,'/ «7 7 ----- 11.50 8,300 8 10.70 6,780 12p.m...... 4.39 inC 9 9°. 3,750 9 9.40 4,550 6 ..... 7.65 1,950 10 8.65 3,520 April S3 9...... 970 12 - 7.62 2,320 11 5.95 666 1 a.m___ . .... 4.39 108 443 May n 2.-- _ . _ ... 4.90 208 6 307 3. .. 8.75 3,150 5.03 238 7.80 2,520 4- ___ ...... 11.15 7,410 10 c no 2_ ----- 7.70 2,410 5 ___ __ ..... 12.85 15.100 12.. 4.94 210 5------7.10 1,800 TEXAS AND ADJACENT STATES B209

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957- Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May It Con. May 18 Con. May 23 6.15 970 6.90 724 4 040 5 1,060 2 5.65 778 12 5.70 814 3 7.15 10.95 7 o^n 607 4 4,700 2 n on 451 5 12.10 10,200 3 12.52 4.77 355 6 19 800 4 1 9 on 15, 400 12 4 60 7 19,800 5 ...... __ 13.13 9_ ------13.15 16, 900 6 13.18 17,100 10 1...... 1 0 flC 16, 500 12- 8- ...... 4.37 218 10 9 800 4.20 182 May 13 12- 10.97 7,270 May 86 2. ------21, 200 4.37 218 3 ..... - 13.65 20, 800 5 13.37 18, 300 5 _._ 8.60 3,450 May 27 6 ----- 13.36 18, 200 g 2 ono 8 ------13.53 20,000 10 6.93 4.36 215 9 ...... 13.37 18, 300 6.31 2 4.97 431 11 - . - r 77 QCC 3 5.48 680 12m 9 K. Af\ 641 4 578 11.50 8,300 12- 7.00 1,720 2 7,600 6.------9.90 5,360 3 ... 7 4,700 5. _____ 11.02 7,360 8 . 9.35 4,480 9 10.66 6,710 4 94 419 11.50 8,300 12 9 90 12 m___ A 7K 347 12.37 11, 300 4 KO 11--.. ------12.43 11,600 May 14 12.34 11,200 May 21 12.42 11,600 8.30 2,970 3 12.44 11, 700 T...... 1 s^n j. ^tn 200 4 12.30 11,000 9------1,430 6 11.25 7,800 12m_- 6.18 988 May %% 8 ------9.75 5,100 3 p.m__ - ... 5.80 730 8 a.m 4.25 192 10 8.60 3,450 6 . 582 10 12 7.73 2,440 9 ------4 24 12 ------2 10.90 May %8 3 12.23 10, 700 May 17 4 11.25 7,800 6.83 1,580 11.20 6 6.05 1,040 12 p.m.-. __ 4.25 129 12.05 12m- - 5.45 666 7 9,250 5.03 455 May 18 8 7,320 12 4.76 351 9 . 9.90 5,360 4.28 134 10 - 9 97C 19 7 78 2 cnn

145. BRADY CREEK AT BRADY, TEX. Location. Lat 31°08'15", long 99°19'55", on left bank just upstream from bridge on U.S. Highway 377 on North Bridge Street in Brady, McCullough County, and 0.4 mile downstream from Live Oak Creek. Drainage area. 575 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 1,646.50 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 8,920 cfs 7 p.m. May 12 (gage height, 13.96ft). 1939 to March 1957: Discharge, 39,100 cfs Sept. 10, 1952 (gage height, 24.80ft). Maximum stage known since at least 1904, 29.1 ft July 23, 1938 (discharge at site 5 miles downstream, 86,000 cfs by slope-area measurement of peak flow). B210 FLOODS OF 1957

Remarks. As of October 1956, the flow from 69.6 sq mi above this station was partly controlled by 13 floodwater detention reservoirs with a total combined capacity of 22,550 acre-ft below the crests of flood spillways, of which 21,200 acre-ft is floodwater detention capacity and 1,350 acre-ft is sediment storage capacity

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1. _ ... 0.2 426 143 11 0.2 2,210 17 21 115 130 5.0 2 . .2 189 384 12 .2 4,360 13 22- 38 271 4.9 3...... 2 285 226 13.. .2 4.650 11 23 2,740 1,010 4.5 4...... 2 276 92 14... .2 962 10 24 413 135 5.0 5...... 2 139 199 15...... 2 434 8.8 25 86 448 7.0 6...... 1 102 138 16 .2 339 7.4 26..... 1,170 637 6.0 7...... 1 87 62 17- .2 220 6.4 27- 4, 5.50 2,270 5.0 8...... 1 76 33 18 .2 1,500 7.4 28 471 447 4.8 9. ... .1 2,090 24 19 775 847 7.4 29 1,940 158 4.3 10...... 1 1,400 18 20- 1,660 215 5.5 30 493 90 3.1 31- 48

Monthly mean c ischarge, in cubic feet per s 482 853 48.8 Runoff, in acre-ft et 28, 670 52, 460 2,900

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 18 April SS Con. April 27 4.52 0.2 10.94 3,520 4.. . 10.20 2,500 3 ... .. 11.06 3,690 April 19 5 11.45 6 . 12.13 5,370 6..... 11.62 4,520 8 12.95 7,030 3 a.m.__ ...... 4.75 1 2 10.78 3,300 10. 13.58 8,230 5..... __ .... 5.05 4 2 10...... 2 700 13.90 8,810 7 . 4.93 2.9 3,040 13.80 8,630 12 m__ __ 4.83 2.1 3.730 13.35 7,820 5.22 6.4 4 3,730 3 12.40 5.930 4.. _ ...... 9.30 6 3,510 4 11.00 3,600 5. 9.88 2,070 10.70 5...... 10.00 2,240 6---....-- ... 9.50 1,580 10 . 2 310 6 ----- 9.52 1,610 8. _ . _ 9.53 19 9 28 1 ' 330 9 8.93 960 10 10.39 2 760 12...... 8.68 743 12 11.28 April 28 April 20 8.85 885 8.39 V)1) 8.39 522 11.83 10...... 12 m 8.23 415 3 .... 11.82 S19 8.08 328 5 _ ...... 10.90 3 460 7 75 10 334 7 9.73 12...... 7.57 133 11 8.12 350 9 ______. 9.13 1,160 12 9.00 1,030 10. .. 9.10 1,130 12 m _ . ... 8.87 903 8.33 10.10 2,360 12. . OOQ 78 3_ 10.85 3,390 7.03 66 5 _____ .. 11.21 3,900 April 21 12 55 6 ------11.25 3,960 7 11.15 3,810 6 a.m____ ... .. 7.60 10.35 2,710 12 in...... 7.39 April 26 10. 9.92 2,110 6 p.m...... 7.19 12 m ... 9.42 1,480 12...... 62 6.42 41 8.83 867 12 m .. ... 6.17 32 6 8.53 626 April 22 6.06 28 8 .... 8.51 612 5...... 7.00 64 9 8.85 885 6 a.m...... 6.65 49 9.50 1,580 10. 9.21 1,240 12 m ...... 6.30 37 7.. .. 11.50 4,330 11 - 9.50 1,580 6 p.m... __ ... 5.96 OK 19 8.99 1,020 12. . Q 5.76 5,020 April SO 10 11.82 4,840 11.55 4,410 8.55 642 2 a.m __ ... 5.78 20 12 11.22 3,910 6 8.25 428 TEXAS AND ADJACENT STATES B211

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

AprilSO Con. May IS May 22 Con. 12 m...... 8.10 339 11.62 4,520 7 40 8.06 317 3 - 11.82 4,840 4. _____ 7.28 87 5._...... 8.03 300 12.20 7 9<* Q1 6-...... 8.19 390 12.75 6,630 g 8 ... . 8.51 612 13.31 7,750 604 10...... 8.65 719 8 - 13.22 7, 550 11 _ ._ 2,230 11. . ..__.. 8.68 743 10 12.48 6,090 12 10.47 2,870 12...... 8.64 711 12m__ ...... 11.48 4,300 10.91 3,480 May ^3 10.87 3,420 11.04 3,660 3,510 7.16 74 7 11.06 3,690 3- -_ 10.83 3,370 9. ------10.95 3,530 6..- -_- 9.11 1,140 10.84 604 10.37 2,740 12m .- .... 8.27 440 7.18 76 7.94 251 8.30 459 May 14 12 7.74 184 9.40 1,460 9... ----- 9.67 1,790 9.50 1,580 10--...-..-. 9.65 1,770 6.. ----- 9.07 1,100 9.80 1,950 8.84 876 12m -_----.- 7.53 127 12m______10.30 2,640 8.64 711 7.46 110 10.53 2,950 8.49 12 110 4 - 9.81 1,970 12 5 9.82 1,980 9 - 11.47 4,280 May 17 5,410 7.42 102 12 - 12.23 5,590 7.90 229 7.33 93 7.27 84 8.25 428 9.82 1,980 12.00 5,140 8.38 515 8.. ------9.83 1,990 3 10.75 3,250 2 - 8.38 515 10 . 9.37 1,430 5 ...... 9.70 1,830 3- -- 8.22 409 12 8.73 783 g 9.09 1,120 4 8.25 428 8.71 767 9.07 1,100 May 26 8.38 515 9.28 1,330 12 8.17 379 9.28 1,330 2 a.m.-- . .. 8.32 473 9 . --- 9.15 1,180 3._ ... - 8.60 679 May 11 9.32 1,370 5.- - 9.24 1,270 9.22 1,250 6 ------9.21 1,240 284 1,280 9 8.80 840 7.86 217 10.00 2,230 12m ...... 8.52 619 8.40 529 10.23 2, 530 8.18 385 2 ...... - 11.20 3,880 10.35 2,710 12 7.95 256 3-. 13.00 7,120 11 10.35 2,710 4 ...... 13.00 7,120 12 - 10.24 2, 550 May 27 5 .... -- 12.37 5,880 1...... 11.20 3,880 7.83 207 10.87 3,420 7 7.81 201 10. . 10.92 3,490 9.50 1,580 8 8.40 529 12 11.16 3,830 8.97 1,000 10------10. 35 2,710 8.49 596 12 m_--_ . 11.17 3,840 8.06 317 11.69 4,630 4--. . ------11.98 5,110 5 - - 11 90 4.970 May %Q 5 11.98 5,110 11.87 4,920 6.- -- 11.78 4,770 11.68 4,610 12m___._ - 7.78 193 8_ - 10.50 2,910 9.62 1,720 156 10 9.38 1,440 O <*7 12 8.93 960 8.96 990 May n 4-...... 9.50 1,580 May 28 5.------12.80 6,720 12 p.m.-- ... . 7.50 120 6 ------13.92 8,850 8.42 544 7 13.96 8,920 May %% 12 m-. ------8.17 379 9 ...... 12.78 6,690 12p.m...---- 7.79 196 12 11.67 4,600 12 m__ ...... 7.45 109 B212 FLOODS OF 1957

146. SAN SABA RIVER AT SAN SABA, TEX. Location. Lat 31°12'50", long 98°42'40", on right bank at downstream side of pier of bridge on State Highway 16, 1.2 miles north of San Saba, San Saba County, 4.8 miles downstream from China Creek, 5.0 miles upstream from Simpson Creek, and 15.5 miles upstream from mouth. Drainage area. 3,042 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 1,162.16 ft above mean sea level datum of 1929, Fort Worth supplementary adjustment of 1942. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 27,500 cfs 8:30 p.m. May 13 (gage height, 28.23 ft). 1904-6, 1915 to March 1957: Discharge, 203,000 cfs July 23 1938 (gage height, 45.18 ft, from floodmarks, at site 1.8 miles downstream at datum 8.80 ft lower), from rating curve extended above 41,000 cfs on basis of slope-area measurement of peak flow. Maximum stage known since at least 1899, that of July 23, 1938. Flood of June 6, 1899, reached a stage of 42.6 ft at site 1.8 miles downstream at datum 8.80 ft lower; information from local resident. Remarks. Since 1954 flow affected slightly by several flood-detention reservoirs on Brady Creek. Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

I .... 540 1,260 904 11.-... 39 2,220 211 21. . 5,560 1,060 137 2...... 204 775 1,500 12....- 32 8,260 194 22 947 595 127 3...... 102 445 1,110 13 27 20, 300 182 23 3,620 2,290 121 4...... 70 544 846 14__._. 26 15, 100 182 24. . 8,980 2,190 119 5...... 56 535 662 15. 24 3,340 166 25 2,120 730 117 6...... 43 329 618 16. 23 1,400 154 26 1,180 2,750 107 7...... 60 241 491 17 .. 19 870 143 27. 14, 100 1,910 98 8_ __ 67 196 376 18._._- 18 970 141 6,750 6,460 93 9. 51 412 296 in 81 5,140 199 29.. 2,060 2,290 90 10--.___ 41 6,140 244 20-- 4,210 3,700 159 30._ 2,420 862 91 31. . 640

Monthly mean c ischarge, in cubic feet per 1,782 3,031 329 Runoff, in acre-fe et . 106, 100 186, 400 19,590

147. COLORADO RIVER NEAR SAN SABA, TEX. Location. Lat 31°13'05", long 98°33'50", on left bank at downstream side of pier of bridge on U.S. Highway 190, 5.2 miles downstream from San Saba River, 9.2 miles east of San Saba, San Saba County, and at mile 474. Drainage area. Approximately 30,600 sq mi, of which 11,900 sq mi is probably noncontributing. Gage-height record. Water-stage recorder graph. Datum of gage is 1,096.22 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 66,200 cfs 9 a.m. May 14 (gage height, 37.34ft). 1915-22, 1923 to March 1957: Discharge, 224,000 cfs July 23, 1938 (gage height, 63.2 ft, present site, based on floodmarks at site 2,230 ft downstream). Maximum stage known during period 1878 to July 22, 1938, 58.4 ft Sept. 25, 1900, present site, from floodmarks at former site (discharge, 184,000 cfs). TEXAS AND ADJACENT STATES B213

Remarks. Some regulation by five reservoirs in the Colorado and Concho Rivers and Oak Creek basins above Winchell, and by two reservoirs in the Pecan Bayou basin; combined capacity, 838,300 acre-ft. Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 1,190 28, 000 5,000 11 124 18, 300 2,290 21 11, 100 34, 300 1,700 2 562 15, 800 10, 900 12..... 104 31, 300 2,010 22 4,080 31, 100 1,420 3 282 8,780 17, 900 13..... 88 54, 600 3,020 23 10,800 9,230 1,530 4, . 184 4,560 25, 000 14 77 64, 600 7,810 24- 19, 500 12. 400 1,250 5 ... . 442 5,900 30, 000 15 - 383 58, 900 4,760 25 14, 100 20,900 1,120 6 1 640 3,680 25, 400 16 328 59, 500 2,670 26 4,770 22, 500 989 7 . 358 2,160 8,820 17 218 55,600 2,200 27 22, 700 17, 100 916 8. ... 261 1,310 4,690 18 164 24,900 1,850 28 36, 600 24, 200 868 9_...... 210 2,150 3,620 19 2,470 23, 300 1,680 29 34, 400 30,600 828 10 154 8,180 2,820 20 5, 630 32, 100 1,470 30 35, 300 19, 900 716 31 6,270

Monthly mean discharge in cubic feet per 6,907 23, 620 5,842 Runoff, in thousands of acre-feet 411.0 1,452 347.6

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1951

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 18 April 23 Con. April 30 2.60 148 10.30 8,620 25.35 35,900 g 25.28 35, 700 April 19 11.84 11, 100 24.84 34, 800 11.92 11, 920 2 go 148 10 11.05 9,750 3 2.88 261 12 . 11.18 10, 000 4.. --- 4.75 1,620 23.80 32,600 5 6.15 3, 030 . April 24 12 m.__ ...... 21.90 28,600 6- ~ 7.70 4,870 19.30 23,600 7 9.45 7,280 13.75 14, 100 12 17.23 19,900 8 9.82 7,850 9 15.30 16, 600 10- - - 7.77 4,960 12 m-- 19.70 24, 300 May 2 11 6.95 3,960 20.62 26, 100 6.37 3,330 19.76 24, 400 12m. _ 14.32 15, 100 5.41 1,290 12 18.42 22, 000 13.06 13, 000 8 4.25 1,160 12 4.51 1,390 April M Mays April 20 12m 14.08 14, 700 4.55 1,380 10.90 9,580 5.60 2,490 12 - 8.04 5,310 May 9 6.88 3,890 12m.-- 9.00 6,640 4.83 1,649 9 1 ^ 4.79 1,610 2,740 5.56 2,440 12 5.44 ?, 300 6_ - 5.76 2,660 6 6.30 3,250 12. 6.61 3,590 April &1 7 8.35 5, 730 8 9.70 7,660 May 10 13.04 12 -- . 12.57 12,200 8 13.81 14, 300 7.62 4,770 12m-- 13.08 10 inn April 37 9.50 7,360 U CO 10 600 11.86 11, 100 17, 400 12 14.56 15, 400 12- 8.16 5,470 12m. 18.30 21, 700 22.05 28, 800 May 11 April %% 12 24.35 33, 700 15.38 16, 700 7.06 4 090 15.38 16, 700 8 IT QO A OQfi 15. 54 17, 000 12 m__ -.____ 7.42 A cin 37, 200 3 16.98 19, 500 12 p.m. -_.... o Qcn 26.47 38, 40(1 Pi . _ __- 18.38 21, 900 35, 100 9.. 18.09 21, 400 April 23 12 ------18.34 21, 800 April 29 3 a.m _ 5.66 2,550 May n 4 7.10 4,130 24.42 5 8.20 5.520 12 D.m.__ .... 24.75 34. 600 6 a.m__------19.86 24,600 B214 FLOODS OF 1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May 12 Con. May Si May SO 12m.__- ... 22.52 29,900 12m ..--. 24.67 34,400 20.26 25,400 5p.m. _ _ .. 24.24 33, 500 12p.m . ____ 25.72 36,700 12m...... 17.67 20,600 6 .... 25.00 35, 100 14.08 14,700 8. - .. 27.80 41, 500 12 10.88 9,550 10 29.54 45,800 11 29.82 46,400 25.44 36, 100 May 31 12 29.84 46,500 12m...... 24.20 33,400 21.32 27,400 9.18 6,890 May IS 12 16.24 18, 200 12 m__ --...._ 8.34 5,720 7.67 4,830 12m...-. . 32.94 54,400 12p.m...... 36.18 63,100 12.87 12,700 8_...... 10.05 8,220 12m.... 7.43 4,530 12 m...... 9.13 6,820 6p.m.... 7.96 5,210 37.22 65,900 8.97 6,600 12 8.78 6,330 9...... 37.34 66, 200 8 ...... 9.18 6,890 12m. .-....._ 37.23 65,900 12 11.25 10,100 June 2 35.78 62,000 10.59 9,080 12m.. 11.30 10,200 12.46 12, 100 11.51 10,600 12m... .- 34.41 58, 300 12m... 12.35 11,900 5 _ 13.90 14,400 34.03 57,300 12.90 12, 800 6 - 13.90 14,400 12 34.09 57,400 12...... 14.69 15,600 9...... 13.29 13,400 12 13.57 13,900 May 18 May H5 June 3 12m.. 34.86 59,500 12m...... 18.07' 21, 300 35.29 60, 700 18.86 22, 700 12m...... 16.11 18,000 12...... 35.41 61,000 7...... 19.97 24,800 12p.m...... 18.34 21,800 9...... 19.76 24,400 May 17 11 ..... 19.78 24,500 June 4 6 a.m... __ . 35.04 60,000 12 m...... 20.05 25,000 12m-... . 34.05 57,300 21.58 28,000 32.14 52,400 20.06 25,000 12.. 28.82 44,000 6 ...... 19.47 23, 900 June 5 11 18.69 22,400 May 18 18.70 22,500 21.68 28,200 6 18.32 21,800 5 ...... __.... 22.59 30,000 23.30 31,500 12 16.58 18, 800 12m- .. 22.67 30, 200 12m-.. ... 17.20 19, 800 22.82 30, 500 15.55 May 27 12 22.74 30,400 12 16.68 12m_...... __ 14.60 15,500 June 6 May 19 6p.m.. 15.34 16,700 12 17.08 19,600 22.22 29,300 12m.. 18.80 12m. ------20.93 26,600 20.16 18.55 22,200 12 . 22.63 12 15.10 16,300 6a.m...... 17.64 20,600 12 m__...... 19.17 23,300 June 7 May SO 12p.m. ._. ... 23.29 31,500 11.70 10, 900 23.75 12m- 9.54 7,420 8 . 24.08 33, 2CO 8.60 6,080 12m.. . 23.88 32,700 23.59 32, 100 12 ------8.17 5,480 9p.m.-..-... 23.26 31, 400 12m_..._ ... 22.97 30, 800 12..... 23.34 91 74

148. BUCHANAN RESERVOIR NEAR BURNET, TEX. Location. Lat 30°45'05", long 98°25'00", in powerhouse at Buchanan Dam on Colorado River, 1 mile upstream from bridge on State Highway 29, 10 miles west of Burnet, Burnet County, and at mile 413. Drainage area. Approximately 31,250 sq mi, of which 11,900 sq mi is probably noncontributing. Gage-height record. Indicating gage. Datum of gage is 0.48 ft above mean sea level, datum of 1929 (levels by Lower Colorado River Authority). TEXAS AND ADJACENT STATES B215

Maxima. April-June 1957: Contents observed, 1,001,000 acre-ft 12 p.m. May 3, 5, 13, 14, 29, June 6 (gage height, 1,020.4 ft). 1937 to March 1957: Contents observed, 1,006,000 acre-ft May 15, 1954, and May 21, 1955 (gage height, 1,020.6 ft). Remarks. Reservoir is formed by dam comprised of two reinforced concrete multiple-arch sections, three banks of taintor gates, and a 1,088-ft reinforced concrete spillway. Dam completed and storage began May 20, 1937. Total capacity, 992,000 acre-ft at top of spillway (gage height, 1,020.0 ft). Usable capacity for power development, 955,000 acre-ft between gage heights 937.0 ft at sill of powerhouse penstock and 1,020.0 ft at top of spillway. Figures represent total contents. Water used for power development and irrigation of rice in several districts below Columbus.

Gage height, in feet, and contents, in acre-feet, at 12 p.m. of indicated day, 1957

April May June Day Q age height Contents Gage height Contents Qage height Contents

1 ... 1,010.2 779,000 1, 019. 7 985, 100 1,020.3 998,900 2 1, 010. 3 781,000 1, 020. 2 996,600 1,020.2 996,600 3 ...... , 010. 4 783,000 1,020.4 1,001,000 1,020.2 996,600 4...... , 010. 4 783,000 1, 020. 3 998,900 1,020.2 996,600 5 , 010. 4 783,000 1, 020. 4 1,001,000 1,020.4 1,001,000 6...... , 010. 4 783,000 1, 020. 3 998,900 1,020.3 998,900 7...... , 010. 5 785,000 1, 020. 2 996,600 1,020.0 992,000 8...... 1, 010. 5 785,000 1, 020. 0 992,000 1,020.1 994,300 9- ...... 1,010.5 785,000 1, 019. 9 989, 700 1,020.1 994,300 10...... 1,010.5 785,000 1, 019. 4 978,200 1,020.0 992,000 11...... 1, 010. 5 785,000 1, 020. 1 994,300 1, 019. 9 989, 700 12 1, 010. 5 785,000 1, 020. 3 998,900 1,019.8 987,400 13...... 1, 010. 5 785,000 1, 020. 4 1,001,000 1,019.8 987,400 14...... 1, 010. 5 785,000 1,020.4 1,001,000 1, 020. 0 992,000 15...... 1,010.5 785,000 1, 020. 1 994,300 1,019.9 989,700 16...... 1,010.6 787,000 1, 019. 9 989,700 1, 019. 8 987,400 17 1, 010. 6 787, 000 1, 019. 8 987,400 1,019.8 987,400 18...... 1, 010. 6 787,000 1, 019. 0 969,000 1,019.8 987,400 19 1,011.3 801, 300 1,019.6 982,800 1,019.8 987,400 20 ...... 1, 012. 3 822, 300 1,020.2 996,600 1,019.7 985,100 21 1, 012. 3 822, 300 1, 020. 2 996,600 1,019.6 982,800 22...... 1, 012. 7 830, 700 1,020.3 998,900 1,019.6 982,800 23 1,013.9 855,900 1, 019. 7 985, 100 1,019.6 982,800 24...... 1, 015. 5 891,000 1, 019. 6 982, 800 1, 019. 6 982,800 25 1,017.1 926,200 1, 020. 2 996,600 1,019.5 980,500 26...... 1, 018. 2 950,600 1, 020. 0 992,000 1, 019. 4 978,200 27 ...... 1, 019. 2 973,600 1,019.5 980,500 1,019.3 975,900 28 ...... 1, 019. 4 978,200 1, 019. 8 987, 400 1, 019. 2 973,600 29- 1,019.2 923,600 1, 020. 4 1,001,000 1,019.0 969,000 30 1,019.3 975,900 1,020.2 996,600 1, 019. 0 969,000 31 1,020.2 996, «00 +198, 900 +20,700 -27,600

149. LLANO RIVER NEAR JUNCTION, TEX. Location. Lat 30°30', long 99°44', on right bank 250 ft north of old Kerrville Junction Road, about half a mile downstream from point where slough diverts floodwater from main channel, 3 miles east of Junction, Kimble County, 4 miles downstream from confluence of North Llano and South Llano Rivers, and 4% miles upstream from Johnson Fork. Drainage area. 1,874 sq mi. Gage-height record. Water-stage recorder graph. Supplementary water-stage recorder graph used for period Apr. 23 to June 1. Datum of gage is 1,630.32 B216 FLOODS OF 1957

ft above mean sea level, datum of 1929. Supplementary gage for stages above 5 ft at site 5,335 ft upstream at datum 6.0 ft higher. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 40,500 cfs 6 a.m. May 27 (gage height, 19.92 ft at supplementary gage). 1915 to March 1957: Discharge, 319,000 cfs June 14, 1935 (gage height, 43.3 ft, from floodmarks; 41.4 ft at supplementary gage, from floodmarks), from rating curve extended above 54,000 cfs on basis of slope-area measurements of 154,000 and 319,000 cfs. Maximum stage known since at least 1888, that of June 14, 1935. Remarks. Gage heights at indicated time in accompanying table are for supplementary gage.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1...... 36 478 3,760 11 28 187 323 21 65 408 258 2 35 346 2,390 12 26 353 307 22 137 316 224 3 37 313 831 13 26 5,410 287 23 1,200 266 210 4 34 266 638 14 27 2,400 277 24 9,190 239 206 5 .... 33 239 522 15 29 602 262 25. 3,230 217 197 6 32 210 470 16 30 704 253 26 755 354 192 7 31 186 427 17 .. 29 6,290 238 27 672 19,800 178 8...... 30 175 392 18 28 1,390 238 28 5,440 2,280 169 9...... 29 365 365 19 86 3,310 233 29 5,920 832 164 10...... 29 286 343 20. . 58 702 253 30 966 564 160 31 2,710

Monthly mean c ischarge, in cubic feet per s 942 1,684 492 Runoff, in acre-fe et 56, 070 103, 500 29,290

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 88 April 24. Con. April 26 Con.

1.70 EQ 9 1 1 7,640 3.90 595 10.85 11, 700 12 3.78 542 April 23 2 13.00 17, 100 3 .. 15.75 23, 800 April 27 2a.m __ .-.- 1.70 58 4 ...... _.. 27, 200 3 1.90 74 5 1 E QC 24,200 3.48 422 4 ------2.93 247 1 4 CO 5 ... 2 99 7 17,000 April 28 6 - 3.28 O^Q 8 11.80 7- - - - 4.25 779 9 - . 10.86 3.37 380 8 -- - 5,780 10 10.18 10, 100 6 10.30 10,400 9 7.92 5,110 ll- ._ 9 62 8,800 7 10.93 11,900 10 6.98 3,450 12 9 12 7,660 8 -- 18.64 11,200 6.14 2 330 12m-- 8.89 7,160 12m- 8.12 5,530 4.87 1,170 8 7.51 4,310 2.------5.27 1,470 6,790 11 . 7.72 4,710 4 4.68 1 040 3 8 97 5,850 8.15 5,600 6 . 4.04 665 7 ft4 4 Q^n 8 3.53 442 7 4,020 12 3.22 331 12m...- 6 40 9.05 7,510 5.74 1,900 2.------. 10.15 10,100 April #4 K QO 1,510 4 10.75 11,500 4.91 1,200 6. - - 10.34 10,500 947 9.50 8,520 7 3.32 362 10 - 8.72 6,790 8...... 5.50 1,670 8.08 5,450 9 ...... 7.58 4,440 4.45 885 6.88 3,300 10 _ ..... 8.75 6,860 12m. 4 09 8 - 6.06 2,240 11. .- . 9.18 7,800 7 p.m... _ .. 3.77 538 12 5.51 1,680 TEXAS AND ADJACENT STATES B217

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 30 May 17 May 27 Con. 3.68 502 17.30 g 4 62 994 2 9.80 9,220 5 867 3.------12.35 15, 500 6 19.92 4.12 705 4._-_ ...... 13.16 17, 500 7 _ _-_-__ 19.40 37, 500 12 3.90 595 13.30 17, 800 18.88 35, 000 6 12.72 16, 400 9_ 18 93 Mayl 7 .. ... 11.75 14,000 10 18.88 35, 000 8-- -- 10.60 11, 100 ll _ 18.30 32, 700 12 m 3.59 466 9 9.42 8,340 3.38 383 10 8.58 6,500 11 7.96 5,200 2. .... - 14.30 20,000 7.46 3 ...... - 17, 400 6.70 3,040 4...... 12.25 2.62 175 4.. ... _ . 6.21 2,410 5...... 11.50 13, 400 6_ 5.80 6 10.87 May It 9. .... 5.35 1,540 9.58 8,700 12 4.92 1,200 10 8.66 6,670 3.38 383 12 5,180 2 3.44 406 May 18 6 3.05 280 May 18 2.76 206 4.42 3 2.87 232 4.37 838 7.17 3,740 4. --. - 3.18 319 4.42 867 6_ 6.58 6 -- - 3.54 446 6-...... 4.54 941 g 7 3.37 380 7 4.90 1,190 5.76 1,920 9 3.75 530 8. -- 6.05 2,220 5.19 1,400 11.- ---_-__ 3.74 526 9.------6.58 2,870 12 4.77 1,100 12 -- 5.00 1,260 10 6.82 3,210 11 7.40 4,110 May 13 12 8.10 5,490 4.29 794 6.06 2,240 3.99 640 3. ----- 5.90 2,060 4 6.70 3,040 8.56 6,460 5 7.20 3,780 3 . 8.43 6,180 7 7.47 4,240 8.42 6,160 3.82 559 9. ... 8.65 6,640 6 . ._ 8.00 5,280 3.67 498 10 8.63 6,600 8.. ------7.40 4,110 12m _ . 8.89 7,160 10 3.300 Man 31 1 p.m.- _ ... 9.07 7,550 6.46 2,720 6 - ... 8.41 6,140 5.72 1 880 3.66 9...... 8.50 6,330 8 5.20 1,410 6 3.87 582 10 8.48 6,290 4 7^ 7 4.03 660 12 8.22 5,740 8 4.45 885 9_ 5.80 1,960 May 14 5.93 2,090 4.33 5.48 1,650 7.30 3,940 4.03 660 7.45 4,200 8- 6.47 2,730 3.81 554 2 7.94 5,150 12 m_. .-.-..- 5.78 1,940 12 3.64 486 4 . 7.06 3,570 5.21 1,420 6...... 7.13 3,680 8 - . 4.75 1,080 May 15 8.06 5,410 12 4.43 873 9 -- 8.17 5,640 2.79 213 12 7.63 4,540 May 15 May 16 June 1 4.09 690 3.84 2 7K 204 3,970 3.66 494 7 3.08 7.65 4,580 12--. ------3.53 442 8.- 3.63 482 6 7.60 4,480 9. .... _. 3.68 502 9...... 7.12 3,660 10 4.27 784 6.57 2,860 12m. ------3.34 369 11 5.20 1,410 6.08 2,260 3.43 402 12 6.24 2,450 6.25 2,460 4 __ ...... 6.05 2,220 6 7.35 4,020 5 ...... 6.37 2,600 May 87 7 7.61 4,500 6 ...... - 5.27 1,470 8 8.34 5,990 8...... 4.47 897 6.05 2,220 10 7.30 3,940 10...... 4.02 2. .... 12 6.72 3,070 12 3.77 538 3 11.50 13, 400

656087 O 62- -15 B218 FLOODS OF 1957

150. LLANO RIVER AT LLANO, TEX. Location. Lat 30°45', long 98°40', on right bank in Llano, Llano County, 0.4 mile downstream from bridge on State Highway 16 and 7 miles upstream from Little Llano River. Drainage area. 4,233 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 970.01 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 47,200 cfs 9 p.m. May 27 (gage height, 16.39ft). 1939 to March 1957: Discharge, 232,000 cfs Sept. 10, 1952 (gage height, 32.6 ft), from rating curve extended above 129,000 cfs on basis of slope-area measurement of peak flow. Maximum stage since at least 1899, 41.5 ft June 14, 1935, from information furnished by local resident (discharge, 380,000 cfs).

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

l... __ 116 1,900 5,150 11 - 38 485 612 21 70 1,330 401 2 ... - 96 1,020 11,600 12- 33 2,580 596 22- 2,700 794 330 3 .... 107 744 5,760 13 .. 30 13, 200 892 23.. ... 13,300 571 324 4. __ . 113 953 3,090 14 30 7,980 520 24. 10, 900 447 283 5 91 733 2,290 15 30 3,170 407 OR 16, 000 376 212 6...... 78 446 2,110 16 30 1,360 362 26 3,790 5,440 234 7...... 64 365 1,170 17 29 2,200 330 27 . 5,150 17, 900 229 8_ ..... 52 323 868 18 28 5,140 330 28 1,840 18, 700 221 9. ___ . 47 320 720 19 431 2,720 362 29 6,410 4,380 208 10...... 41 368 666 20 164 3,460 378 30 5,200 2,080 196 31 2,370

Monthly mean d ischarge, in cubic feet per s 2,234 3,350 1,362 Runoff, in acre feet 132, 900 206, 000 81, 030

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April £1 April » Con. April %5 Con. 12p.m...... 2.60 67 22, 700 9.51 10, 100 9 .. ... 10.80 14, 300 12 ------7.93 5,960 April && 12 9.22 9,230 April £6 2 a.m____ 2.64 75 April ®4 1 p.m. . . 2.64 75 8.19 6,540 7.10 4,300 2_ 8.00 6,080 6.75 12m__-_-___- 6.39 3,200 3 9.16 8,870 6.64 3,560 5.85 2,440 4- -.. 9.00 8,450 2. .... 7.70 5,460 9_ ... 6.31 3,070 8 7.60 5,220 10.80 10 7.03 4,180 12 6.53 3,390 16, 800 12 7.32 4,700 5 ... 11.35 16, 400 April %3 7 11.95 18, 900 April 87 8.. ______11.97 19,000 5 a.m. . . _ 5.74 2,290 10 12.90 23, 000 3 a.m___.__ 7.69 5,430 6 . 6.85 3,890 8 _. ------7.46 4,960 7 7.90 8.32 6,850 8 9 11 8 7 on April £5 8.39 7,030 9______...- 10.60 11.84 1 S 4ftfl 8.14 6,420 10 11.54 q 6 7.25 4,580 11 11.17 14, 900 13.70 26,900 12--- - 6.16 2,860 12m-. __.--. 10.44 12, 500 5. ______14.22 29,700 1 p.m...... 11.00 14,300 13.62 26,400 April 28 2 14.00 28,000 9. ____..._..__ 5.45 1,950 3 14.30 30. 200 12m______11.00 15. 100 12 m-. ----- 5.27 1,740 TEXAS AND ADJACENT STATES B219

rage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April #8 Continued May 15 May 27 Con. 4 98 1,460 6.73 3,890 9.20 9 600 1,470 12 Hi-- 6.14 2,960 5 ...... 6p.m. _...... 5.65 2,290 6...... 14.10 31,000 12 5.30 1,860 7 15.88 42,600 9 16.39 47, 200 a.m . .. 5.04 May 16 12...... _... 15.84 44, 200 7 00 8 4ft 7,050 5.01 1.540 8.58 7,510 12m_...... 4.78 1,320 8.40 7,050 6 p.m... __ . 4.59 1, 150 4 a.m. 13.65 31, 300 2m. ______7 94 S QQfi 12...... 4.43 1,030 7.50 5,020 12 ml...... 10.06 14, 700 May 17 9 7Hft 7.87 e OOA 19 7.64 9 QQ 9 730 12m...... 4.22 868 4.09 772 May 2» 2 9.24 9 ' 290 9-...... 7.70 5,740 10 9.80 11,400 6 91 April SO 11 9.92 11, 800 6.34 4,120 12 9.73 11, 200 5.87 a.m____..___ 7.97 5.51 2,740 May 18 2m_. ______7.37 A CAA May SO 3 OAD 8.52 7,700 _ -_ 6.41 3 91 A 8 7.56 5, 43,0 4.99 2,000 6 19 2 ' 890 12m...... 6.88 4,140 6.37 3,310 May 1 12 5.89 2,620 > a.m...... 5.72 May 19 4.51 1,430 2m. ______5.30 1,780 6 ...... 4.58 1,500 5.00 1,470 12m...... 5.42 1,980 5.37 2,520 2 4.78 7p.m...... 5.18 1,710 g 5.90 3,360 8 . 6.50 3,510 5.76 3, 13Q May 2 9 ...... 7.57 5,460 5.34 2,480 10 7.79 5,980 5.27 2,390 2m___..____ 4.42 11 6,030 12...... 5.12 2p.m___..__ 4.15 796 12 7 80 June 1 May 11 May 20 5.09 2,180 2p.m__.____ 3.74 534 6 a.m.._ ... 7.02 4,380 4.88 1,860 12m- 6.29 3,200 6.29 4,030 May 1% 6 p.m...... 5.71 2,360 6.75 4,920 12 5.29 1,840 7.52 6,690 p.m. ...____ 3.50 395 7.57 6,820 > ._- 3.68 500 May 25 7 7.51 6,660 4.90 7.51 .... 7.85 12 p.m. 605 g 7 69 7,130 )_-_.___-.____ 10.00 1 9 1 AA 8 Qe S CQfl 0 ----__-__ 10.79 15,000 May %Q 11 16, 200 2...... - 9.74 11 ' 200 12 .... 11 36 2,090 2. _ ...... 8 CA 8,480 a.m...... 9.51 3...... _ .. 9 30 9 920 .... . 10.90 5 7 S7 17, 600 3 ...... 12.34 21, 600 7 ...... 6 91 4,190 9 no 14,400 ... _ .------. 12.18 20, 900 10.. 6.41 g 8.88 10, 600 3...... 10.92 15, 500 11 8 AK 7 9^ 7,730 3 10.14 8 34 3...... 10.06 12, 300 8 f\K 8,480 L2m_.__ _ _ 9.11 9,350 7... 9.33 12, 100 2 p.m___. _ . 8.52 7,700 11 ... __ .. 6.32 3,240 9.20 11, 600 L...... 9.40 10, 200 12.... 3 ion 9 11,600 10.90 15, 400 May W 12, 300 -.-_- - 11.06 16, 000 12 ..-- . 10, 200 12...... 9.60 1 fi QAA 2,570 4 4,520 5.. _ 7,450 i a.m.. __..... 9.19 9,600 6 ...... 8 C1 7,680 7.94 7,820 9.15 9,480 7.----.. 8.36 7 OQf. 6 . 7.71 7,180 3 ...... 9.00 9,020 8 8 OK 8,600 12 m_...... 6.63 4,680 .2m_ 8.54 7,760 9...... 6.19 3,850 2 p.m.__ 8.41 7,420 10...... 9 6.59 4,600 8.20 6,900 10.70 14, 600 10 6.59 4,600 2 7.47 5,240 12m. 10.43 TO finn 12...... 6.43 4,280 B220 FLOODS OF 1957

151. PEDERNALES RIVER NEAR JOHNSON CITY, TEX. Location. Lat 30° 18', long 98°24', near center of span at downstream side of bridge on U.S. Highway 281, 0.2 mile downstream from Flat Creek, 1.2 miles northeast of Johnson City, Blanco County, and 2.0 miles downstream from Buffalo Creek. Drainage area. 947 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 1,096.70 ft above mean sea level datum of 1929, supplementary adjustment of 1942. Discharge record. Stage-discharge relation denned by current-meter measure­ ments below 42,000 cfs and by slope-area measurements at 128,000 and 441,000 cfs. Maxima. April-June 1957: Discharge, 90,000 cfs 3:30 p.m. Apr. 24 (gage height, 24.10 ft). 1939 to March 1957: Discharge, 441,000 cfs Sept. 11, 1952 (gage height, 42.5 ft, from floodmark), from slope-area measurement of peak flow. Maximum stage known since at least July 1869, that of Sept. 11, 1952; flood of July 1869 reached a stage of about 33 ft; information from local resi­ dents. Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1... _ . 77 353 2,320 11 _ _. 7.7 143 117 21 - 82 117 131 2...... 47 204 1,920 12 6.7 117 5,460 22 1,100 94 114 3 30 156 820 13 6.2 1,270 1,220 23 812 83 104 4 _ ..-. 25 160 645 14 -. 5.8 387 334 24 26,100 83 107 5_ - ... 18 183 429 15- 6.2 1,170 230 25 - 4,390 77 97 6...... 16 128 406 16 8.2 139 168 26 627 2,230 86 7 ___ . 13 107 220 17 - 9.1 97 143 27 3,570 4,340 80 8 .. 9.1 100 172 18 9.1 521 135 28 2,070 2,100 75 9 .... 8.2 133 152 19 24 473 329 29 1,350 464 69 10 ...... 8.2 577 131 20 185 168 177 30 419 286 65 31 1,360

Monthly mean C ischarge, in cubic feet per s 1,368 575 549 Runoff, in acre feet 81,400 35, 350 32, 640

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April M April ^4 Con. April #5 Con. 12p.m..... 2.92 183 3.85 852 5.80 3,300 7. ___ . ______3.64 664 10 5.15 2,370 April 25 10 ..... _ 3.45 512 12m 4.76 1,840 11 3.55 590 4.33 1,350 3 a.m _ ...... 2.87 160 12m_ .. 15.10 30, 200 8 3.99 990 4.. _ . . 3.18 328 59, 500 3.77 778 5... ___ _ 3.22 353 1:30... ______38. 500 8 ...... 3.12 292 2 ______17.75 43.500 April 26 9- ...... 3.13 298 3 ______24.00 89, 000 10 3.75 760 3:30- 24.10 90, 000 12m. --_ __. 3.46 520 11 4.68 1,750 99 71 78, 000 3.32 419 12m...... 4.00 5 _____ .. 91 St. 10 3.43 498 2 p.m.... __ 3.64 11--, __ . ____ 4.45 1,480 3 ...... 4.14 1,150 47, 300 12 4.67 1,730 4.. ___ ...... 4.20 1,210 9--... . . 16.15 35, 100 6. _ , _ ... 3.95 950 14 90 29, 300 April 27 7 ____ .. _ . 4.50 1,540 12 .. ... 10. ______4.15 1,160 4.68 1,750 12. . ._ 1,610 2 5.60 3,000 3 5.90 3,450 April %4 13, 600 4- _ - _ .--_ 8.10 7,260 9.00 9,200 5______... 8.62 8,350 1 a.m...... 4.53 1,570 6..... ____ 7.15 5,460 6 .... 8.20 7,460 TEXAS AND ADJACENT STATES B221

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957- Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 27 Continued May 27 June 1 Con. 8 a.m. ____ 6.85 4,960 5.22 2,470 9 oe 9 7QA 9 6.60 4,560 2 ------4.80 1,890 9 9 20 10______6.58 4,530 4__ .--- -. 4.28 1,300 10 11- ______6.63 4,610 3.90 900 12 7 nn K orin 12m___ 6.55 g 3.63 6.30 10 - 3 -- .- 2 930 7 90 6,860 5 4.92 2,050 12m 7.96 6,970 5.95 9 4.29 1,3.10 7.20 5,550 4 _ -_ 5.42 2,750 12 3.97 970 5 . _ . 8.15 7,360 5.25 2,510 6 ___ __.__ 8.39 7,860 5.07 2,260 April &*? T...... 8.10 7,260 12m 4.40 1,430 7.15 5,460 990 2 a.m ______3.80 805 12 4,500 6 ..... 4.06 1,060 6 3.65 672 1,210 10...... _ __ 3.51 558 3.98 980 J2m__-__ __ 3.45 512 11 . 4.11 1,120 1 p.m... __ 3.45 512 6.42 4,270 4.06 1,060 2 ..... 3.75 6.15 2:30...... 5.19 2,430 6 - 4 4.50 1 KAf\ 5 24 2 Erin 4:30___.__ .... 8.50 8,100 4.95 2,090 3.76 769 6.. 7.10 5,380 4.68 1, 750 3.59 622 ? ...... 6.70 4,720 4.15 Q 3.72 733 8 6.65 4,640 3.84 843 3.65 672 10. 5.90 3,450 12 3.65 672 3.59 622 12 ______5.40 2,720 3.61 638 May £9 6 . 4.53 1,570 April 29 8_ 4.02 1,020 3.47 528 9 3.78 787 5.13 2,340 3.35 10 4.18 1,190 2 -__ ... 4.90 ?,020 3 19 12 3.94 940 3. - 5.06 4.____--..____ 4.90 2,020 f>...... 4.72 1,810 9...... 4.66 1,730 242 2.74 111 12m..-.. _ . 4.28 QQ1 8 . 3.57 630 12 _-_.....__ 3.41 512 230 2.73 107 7 3.04 247 2.75 114 May 25 8 3.30 405 4.50 1,540 10 3.20 340 2 11.60 16, 400 2.62 75 3.40 475 3 12.85 20, 700 3.82 824 12.88 20,800 May m 6.30 4,080 4 12.50 19, 400 ^...... 6.10 3,760 5 11.65 16, 500 3.50 550 4 ... __- 2,510 10.95 14, 400 2 4.44 1,470 4.92 2,050 8. .- . 8.90 8,970 3 _ 4.53 1,570 6_ 5.12 2,330 10 7.30 5,730 4.. _ .. _ 3.85 7. K OK 6.75 4,800 5, .__-_- -- 3.51 558 9 1,960 12 6.10 3,760 11. 3.09 274 12 1,350 12m.. 6.78 6.62 4,590 3 5.35 2,650 4.. ______5.00 4 4.90 2,020 6. - 4.40 1,440 3.69 706 6. 4.50 1,540 7 4.25 3 47 528 8 4.19 1,200 8 ------6.70 4,720 3.42 490 12m_ . 3.89 890 9-. -- 7.94 6,930 6 ... 528 3.66 681 10 7.20 K KKfl 7 7 40 5,910 8 ----- 3.50 550 12 5.70 9 10 9,430 12-- __ ----- 3.38 461

152. LAKE TRAVI8 NEAR AUSTIN, TEX. Location. Lat 30°23'20", long 97° 54'35", in powerhouse at Mansfield Dam on Colorado River, 7.3 miles downstream from Sandy Creek, 12 miles northwest of Austin, Travis County, and at mile 318. Drainage area. Approximately 38,130 sq ipi, of which 11,900 sq mi is probably noncontributing. B222 FLOODS OF 1957

Gage-height record. Indicating gage. Datum of gage is 0.12 ft above mean sea level, datum of 1929 (levels by U.S. Bureau of Reclamation). Maxima. April-June 1957: Contents, 1,770,000 acre-ft 11 p.m. May 18 (gag< height, 707.4ft). 1940 to March 1957: Contents observed, 1,377,000 acre-ft Oct. 23, 1942 (gage height, 691.2ft). Remarks. Lake is formed by gravity-type concrete dam. Storage began Sept. 9 1940; dam completed early in 1942. Total capacity, 1,950,000 acre-ft at top of spillway (gage height, 714.0 ft). Capacity between gage heights 681.0 anc 714.0 ft is 778,000 acre-ft and is reserved for flood control. Usable capacity 1,144,000 acre-ft between gage heights 535.8 ft at bottom of 24 Paradox gates 8% ft in diameter, and 681.0 ft at maximum altitude of power pool. Bottom o: penstocks, gage height 552.0 ft. Figures represent total contents. Water used for power development and for irrigation of rice in several districts below Columbus. Gage height, in feet, and contents, in acre-feet, at 12 p.m. of indicated day, 1957

April May June Day Gage height Contents Gage height Contents Gage height Contents

1 ...... 669.2 964, 500 699.6 1,570,000 703.2 1, 661, 000 2 . . . . . 669.2 964, 500 698.4 1, 542, 000 704.8 1, 703, 000 3...... 669.2 964,500 696.6 1, 498, 000 705.7 1, 726, 000 4...... __ .-... ____ ...... 669.2 964, 500 694.7 1, 454, 000 706.0 1, 734, 000 5...... 669.2 964, 500 692.7 1,410,000 706.8 1, 755, 000 6...... -...... 669.2 964,500 691.2 1, 377, 000 706.8 1, 755, 000 T...... 669.2 964,500 690.9 1,371,000 705. 6 1, 724, 000 ^...... 669.1 963, 000 690.7 1,367,000 703. 5 1, 669, 000 9...... 669.1 963,000 690.6 1,365,000 701.2 1,610,000 10...... ___ ...... _ ..... 669.2 964, 500 690.4 1,360,000 699.0 1, 556, 000 11.... _ - _ . _ .... ___ . ... 669.3 966, 000 690.3 1, 358, 000 696.6 1,498,000 12 __ . _ 669.3 966. 000 690.7 1,367,000 696.5 1,496,000 13...... -...... 669.2 964, 500 694.8 1,457,000 696.9 1,506,000 14 ._.__ _ 669.3 966,000 698.4 1, 542, 000 696.0 1,484,000 15...... 669.3 966, 000 701.3 1, 612, 000 693.5 1, 428, 000 16 .-. _ 669.4 967, 600 703.6 1, 672, 000 691.5 1,384,000 17--..-.. ______.-.--.. . 669.3 966, 000 705.6 1, 724, 000 691.4 1, 382, 000 18 ____ ..__.______669.3 966, 000 707.3 1, 768, 000 691.1 1, 375, 000 19.. . _ .. ____ ...... _ .. . 669.5 969, 200 705.7 1,726,000 690.8 1, 369, 000 20...... 669.5 969, 200 704.9 1, 705, 000 690.8 1, 369, 000 21 ...... 669.6 970, 700 704.9 1, 705, 000 690.6 1,365,000 22...... 670.4 983,300 704.6 1,698.000 690.4 1,360,000 23 ...... 672.2 1,013,000 703.7 1, 674, 000 690.1 1,354,000 24... _ _._. 685.3 1, 258, 000 701.8 1, 625, 000 689.8 1, 348, 000 "2&...... - 687.6 1, 304, 000 699.9 1, 578, 000 689.6 1, 344, 000 26...... 688.4 1, 320, 000 701.4 1,615,000 689.4 1,340,000 27 ...... 690.4 1, 360, OCO 703.6 1, 672, 000 689.1 1,334,000 28 ...... 693.7 1,432 000 705.9 1,731,000 688.9 1,330,000 29...... 697.] 1,510,000 705.4 1,718,000 688.8 1, 328, 000 30 _._ 699.4 1, 566, 000 705.2 1, 713, 000 688.4 1, 320, 000 31 ...... 703.8 1, 677, 000 Change in contents, acre-feet. +601, 500 ----- +111,000 -357, 000

153. COLORADO RIVER AT AUSTIN, TEX. Location. Lat 30°14'40", long 97°41'20", on right bank just upstream from Montopolis Bridge on U.S. Highway 183 at southeast edge of Austin, Travis County, 2.8 miles upstream from Walnut Creek, 3.8 miles downstream from Waller Creek, 5 miles downstream from Barton Creek, and at mile 290. Drainage area. Approximately 38,400 sq mi, of which 11,900 sq mi is probably noncontributing. TEXAS AND ADJACENT STATES B223

Gage-height record. Water-stage recorder graph. Datum of gage is 407.28 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957; Discharge, 40,800 cfs 11: 30 a.m. June 4 (gage height, 17.60ft). 1898 to March 1957: Discharge, 481,000 cfs June 15, 1935 (gage height, 45.0 ft, from floodmark). Maximum stage since at least 1843, 46.0 ft July 7, 1869 (adjusted to present site on basis of record for flood of June 15, 1935); determined from information concerning stage at former site furnished by Dean T. U. Taylor. Remarks. Flow largely regulated by Lake Travis and other smaller reservoirs, having a combined capacity of 3,979,000 acre-ft.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 ... 210 29.200 32,100 11 242 15,900 35,600 21 - 242 37, 700 5,890 2...... 225 32,300 7,520 12 260 19,500 33,400 22_-__- 705 37, 500 5,820 3 246 31,700 17,200 13 253 17,300 10,200 23 690 37, 600 5, 570 4 225 33, 000 33,000 14_- _ 225 23,400 14,200 24 4,790 37,600 5,620 5 216 31,900 21,500 15 256 31,900 31,900 25 11,900 37, 200 5,660 6 210 25,800 34, 200 16 -. 280 30, 700 28, 800 26 6,320 30,200 5,620 7 195 9,020 37,300 17 280 32,400 8,830 27 11,200 15, 100 5,640 8 .... 210 4,880 36,900 18- 253 37,200 8,280 28 7,100 13,000 5,760 9 .... 225 4,940 36,300 19 388 37,900 8, 010 29 6,740 30,300 5,710 10 225 7,350 35,800 20 280 37,700 5,930 30 10,400 37, 400 5,600 31 37,800

Monthly mean discharge in cubic feet per s 2,166 27, 270 17,800 Runoff, in thousands of acre-feet 128.9 1,677 1.059

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April $S April 27 May 1 0.47 605 10.67 17 200 14.00 27,000 12m__ _ _ 8.33 11,500 12m___. _ .. 14.40 28,400 April $4 6.62 8,120 2p.m__ ... . 15.65 32,800 12 6.02 7,070 4.. ---. 15.32 31, eon .23 485 7 15.33 31, 700 12m__._ _ .42 580 April 28 12 15.81 33, 300 .44 590 6 .... . 1 9^ 7 -. . 7,040 7,070 8 ..... 9.65 14, 6CO 4.67 4,880 10 11.60 19, 700 6.62 8,120 11------. 14.70 29, 4CO 9 6.59 8,060 May 10 12 15.56 32,500 12 . 6.12 7,240 12m___. _ .- 4.65 4,840 April 29 6.65 8,170 9 8.90 12,800 14.00 27,000 5.91 6,890 12 9.28 13, 700 19 700 6.08 7,180 7 ..... 8 97 11,400 6,480 May 11 12m_._ __ . 6.42 7, SCO 6,330 12 p.m_. __ 5.67 6,480 4 ... .. 6.12 12 m__. ------9.45 14,200 8 ... .. 5.62 6,390 11.40 19, 200 12 ...... 5.47 6,140 12 11.57 19,700 April 86 April SO May H 10 a.m ____ K cn 6,190 12m______. 5.33 5,920 12m_- _ 5,950 11.48 19,400 5.12 6.16 7,310 May 13 5.. ------5,500 6 ...... 9.20 13, 600 8...... 5.08 8 12.25 21 600 11.46 19, 300 12 7.70 10.200 12 12.65 25!800 10 - 11.62 19, 800 B224 FLOODS OF 1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957- Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge' height height height

May IS Con. May 28 Con. June 4 12m...... 38,400 1 p.m ...... 11.02 18, 100 8... . 12.00 24,000 ll:30--_ 17.60 40,800 3 ...... 12 12.75 26,200 12m , - 17.50 40, 500 6 10 800 15.55 34, 600 9 ...... 10.57 16,9CO 7 ----- 12.00 24,000 12...... 1 S 7fifl 12 9.89 18,100 12.83 May 14 12m-- 13.00 27,000 5p.m__ ----- 15.75 35,200 4 a.m. _ .... 1Q 9nn 8 16.14 6 a.m____ - -- 9.57 17, 400 11...... 11.48 19 400 16.33 12m_____--._ 9.52 17,200 12m___... .. 12.77 26,300 14.07 97 9nn 12 14.63 31, 900 12...... 14.90 30, 200 12m__ 16.42 37,300 June ft May 15 16.59 37,800 12 16.51 37,500 5 a.m -.. _ ._ 14.80 32, 400 11 a.m_ .. ... 15.00 30,500 8 14.82 32, 500 12m.-... 15.10 on orin May 31 15. 15 33,400 16.20 3fi, 600 12 16.47 12______16.33 37, 000 8 - 16.38 37,100 May 16 12 m_. __ - 16.52 37, 600 June 13 16.60 37, 800 12 p.m _ .... 14.98 16.88 38, 600 12 p.m_____. 4.40 6,520 6_ 16.93 38, 800 May 17 7 -_____- 16.93 38,800 June 14 12 16.72 38, 200 11 a.m ...... 14.90 4.30 6,340 12m-_ 15.05 Tune 1 4.65 6,970 6 p.m...... 16.37 7.25 12, 000 12-. _ _ 16.59 37 000 4-______-_- 10.15 18, 800 12- .... ._ 16.35 37,000 14.15 30, 400 8------_ _--- 13.25 27, 800 8 11.30 21,900 12 -- 13.90 29,700 May 8ft 12.--.. __-.--. 8.40 14, 600 June 15 2 a.m ___ _ _ 16.38 07 -\t\f\ 4... --_-...___ 38 900 14.12 30, 400 12m ._ 07 fwi 14.50 31, 500 1:30 p.m.. ____ 16.82 38,500 7 finn 15.03 33, 100 4 _._.. 13.32 28,000 6 - 4.33 12 - 15.55 34, 600 6 --... 9.00 16,000 3.77 7:30--- . 12 300 A CO 7,380 June If! 12_-_-_.__._ . 17,300 7 _ _ . 12_____. ._..__ 4.96 7,530 11 a.m -. _ 15.58 34,700 May 87 12 m___ ...... 15.40 34, 200 11.75 23, 200 12ro -- . 16,800 12 6.90 11, 300 4 p.m___- , 9 4S 17,200 7 - - 12--- . 5.24 8 ' 030 7 240 6.62 10,700 2__.______6.60 10,700 9 6.62 10, 700 May US 3 . __,____.- 11______6.90 11, 300 4______13.10 27, 300 12 m.______6.60 10,700 12m _____ 4.73 7,110 4.18 6,120 1 p.m_._ _ __ 4.71 7,080 12_____-______12 4.14 6. 050

154. COLORADO RIVER AT SMITHVILrLE, TEX. Location. Lat 30°01', long 97°10', on right bank 360 ft downstream from bridge on State Highway 71 in Smithville, Bastrop County, 850 ft downstream from Gazley Creek, 4 miles downstream from Alum Creek, and at mile 212. Drainage area. Approximately 39,880 sq mi, of which 11,900 sq mi is probably noncontributing. Gage-height record. Water-stage recorder graph. Datum of gage is 270.14 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments below 58,000 cfs and extended above. TEXAS AND ADJACENT STATES B225 Maxima. April-June 1957: Discharge, 66,900 cfs 3 a.m. Apr. 28 (gage height, 24.20 ft.) 1930 to March 1957: Discharge, 305,000 cfs June 16, 1935 (gage height, 42.5 ft, from floodmarks), from rating curve extended above 209,000 cfs on basis of slope-area measurement of peak flow. Maximum stage known since at least 1870, about 47.4 ft Dec. 4, 1913. Flood of July 8, 1869, was several feet higher; information from local residents. Remarks. Flow largely regulated by Lake Travis and other smaller reservoirs, having a combined capacity of 3,979,000 acre-ft. Flood of Apr. 28, 1957, originated downstream from Lake Travis. Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 535 10, 600 40, 800 11 232 8,090 36, 200 21 989 38, 400 7,610 2...... 545 26,700 44, 000 12..... 241 16, 400 36, 100 22..... 1,810 38,300 7,270 3_ ... 424 31, 400 15, 000 13..... 244 21,400 50,300 23 5,430 38, 000 7,080 4. ... 370 31,200 27,500 14 . 244 21, 000 21,000 24 ___ 3,620 38,000 6,790 5. ... 342 32, 400 38,000 15 .. 262 25, 000 21, 300 25 13,400 38,000 6,580 6 _ 295 32, 200 24, 700 16.. _ 312 33, 100 44, 300 26 21,900 40,600 6,600 7 .. 271 26, 500 35, 400 17 278 32, 600 37, 600 27.. _ 32, 700 41,200 6,500 8_ ... 259 12, 500 39, 100 18 271 34, 300 12, 800 Ofi 47, 800 22, 800 6,430 9_- _ .. 247 7,290 36,800 '9-... 342 39, 500 11,000 29 28, 300 16, 000 6,410 10-_ _ 235 6,970 36, 800 20... .. 362 39, 100 10, 700 30..... 15,200 30,200 6,310 31 37, 600

Monthly mean discharge, in cubic feet per s 5,915 27, 980 22, 900 Runoff, in thousands of a 3re feet 352.0 1,720 1,363

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage D ischarge Hour Gage Discharge height height height

April 20 April 24 April 28 12 p.m...... 1.83 342 3 a.m_.._ ..... 5.33 3,560 6. ------_. __ 5.23 3,430 24.20 66,900 6 23.83 64,400 9...... 22.75 57,500 3,820 12m...... 21.10 48,000 1 a.m __ .. ... 1.96 397 8 ...... 5.41 3,660 3 p.m.... . 19.13 38, 400 3______.. 2.34 582 12 . 5.15 3,320 6...... 37,38 31.000 4. _ ...... 2.66 772 April 25 9...... 16.85 30,000 5 ...... 3.08 1,100 12 16.38 27, 300 6 ...... 1,270 7 ...... 3 QQ 1 ^9fl 1 a.m 5.13 3,300 1,040 3...... 5.43 3,690 April 29 3 fiQ 1,060 6 ...... _ 6.68 5,470 3 no 1,030 9 7.83 7,310 1 K. QK. oc cnn 12 ...... 2 93 974 12m.. _ .... 8.88 9,170 15.67 2 p.m.. ___ 10.08 11, 500 10 15 95 OK Qfifi 7 4.. _ ...... 12.40 16, 500 16.47 97 fififi 8 ...... 16.15 26, 500 01 (*r\r\ 10 17.10 29, 900 6 17.72 32, 400 4 a.m__ __ ... 2.78 856 12...... 31, 700 6 ...... 2.93 974 17.72 32, 400 Ofi 9... . 17.45 31, 300 7 ...... 3 1,290 April 26 g *j 91 12 16.50 27, 800 12m.... _ .. 3.38 1,370 April SO 2 p.m...... 3.58 1,560 2 17.62 32, 000 4...... 4.21 2,210 4 . .. __ 17.36 30,900 6 _____ 4.64 2.700 6a.m____ . 13.50 19, 100 8 16.00 26, 000 iq 9fin 12m...... 14.10 20, 600 12m... 10.90 12...... 5^46 3,730 10 p.m...... 10.56 12, 500 6 p.m.... 9.37 10, 100 12... _ ...... 11.20 13, 800 12 8.62 8,700 April 23 April 27 May 1 6 a.m 6.63 10 7.35 6,510 1 Q 1C i Q ^rio 8.21 8,000 12m .. __ .. 7.48 6,720 8...... 14.85 22,600 10...- 8,08 7,740 1 p.m... __ . 7.48 6,720 12m...... 16.05 12 m. .._ ..- 8.13 7,820 3...... 7.28 6 4HO 1C CK 9.00 9,400 6._._ ...... 6.68 5,470 91 Q7 52. 800 6..- _ . _ ... 10.75 12,900 12...... 5.61 3.930 12 23.81 64. 300 12 13.80 19,800 B226 FLOODS OF 1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May % May %5 June 3 Con. 6a.m____ ..... 15.37 24, 100 19.02 37,900 11.01 13,400 9 . 15.93 11.37 14, 200 12m...... 16.39 27, 400 9...... 11.38 14,200 17.07 29, 800 12-...... --.. 11.20 13,800 9. _ --.-.-... 17.30 37,800 12...... 17.45 31, 300 6 -- - 19.17 38,600 11- ___ 19.27 39,100 May 10 12m.... 19.45 39,900 10.80 13,000 19.65 40,800 8 12.35 16,400 12 p.m...... 7.42 6,620 4...... 19.80 41, 500 12m... . 16.00 26,000 12...... 20. 58 45,400 18.74 36, 700 May 11 8 20.07 42,800 12 20.82 46, 600 8a.m____ ..... 7.30 6,430 10 7.35 6, BIO 21.30 49,200 12m____ _ .. 7.50 6,750 7 ...... 21.46 50.000 4 p.m...... 8.40 8,300 9...... 21.27 49, 000 21.20 48,600 12.-.---. __ - 10.85 13, 100 20.15 43,200 5 ...... 21.22 48, 700 18.67 36, 400 7 21.12 48,200 May IS 12---. .. .- 16.40 27,400 12m...... 19.67 40,900 17.68 32,200 12m. ...__... 12.05 15, 700 15.65 25, COO 6 p.m...... 13.45 19,000 12 .. 14.30 21, 000 12... _ . __ . 13.92 20, 100 16.00 26, 000 6_ ...... 15.68 24, 700 May 13 11- 15.63 24,900 12 m----.--_. 15.58 24,700 13.67 19,600 4a.m ...... 14.07 20,500 14.85 22, 600 8 14.12 20,600 9...-...... 14.14 20, 600 8 13.35 18, 700 12 m.. ._._._. 15.32 24,000 12 m...... 14.47 21, 500 12 11.65 14, 800 16.45 27,600 6 p.m...... 14.80 22, 400 8 17.17 30, 200 12 _ ...... 14.92 12...... 17.63 32,000 May 14 10.25 11,800 7- 9.72 10, 800 4 a.m...... 15.04 23, 100 8 9.75 10, 800 12 p.m. ------18.80 37, 000 8 14.82 22,600 10 10.25 11, 800 12 m...... 14.19 20,800 12m...... 11.35 14,200 13.62 20,600 6...... 13.51 19, 100 12 15.30 23, 900 20.65 45, 800 7-. _ ----.... 13.51 19, 100 12m ...... 22.62 56, 700 12...... 13.81 19, 800 22 99 58, 900 6 22.62 56, 700 May 15 16.08 26,300 12 19.25 45,000 12 m___...... 17.25 30, 500 14.43 91 4.nn 34, 000 12m... _..... 15.63 24,900 19 36, 000 16.75 28, 600 16.65 35, 200 12 17.26 6 ...... 14.22 27, 300 12 m...... 10.75 16,500 May 16 12m...... 18.92 37, 500 9.27 12,600 39, 600 12 8.65 11,000 01 Qnn 12m--. 18.03 33,600 June 1 18.25 M Kflfi 6...... 18.25 40, 900 8.41 10, 400 12...... 18.08 33, 800 19.71 41, 000 5_ 8.42 10, 400 19 20.09 43,000 6 ...... 8.50 10,600 May 17 9...... 10.00 14,400 12m... 12.10 20, 200 12m...... 17.69 14.98 31, 100 17.63 48,300 12 16. 15 36,900 12-...... 17.63 32, 000 10 21.48 50, 200 11 21.49 50, 200 June 16 Mag 18 12m _ ...... 21.45 50, 000 20.77 46, 400 12m...... 17.50 45, 000 6a.m__...... 17.73 32, 400 8 .- 18.82 37,000 17.98 47, 900 12 m..._ _ .. 18.12 34, 000 12 15.82 25,500 12 18.21 49,500 18.60 QA nnn 12. 18.93 37,600 Tune ? 18.23 49,600 May 19 12.80 17,400 6. 18.09 48, 600 10.85 9...... 17.65 45, 900 12m...... 19.50 40, 100 10 10.49 12, 300 12m...-.. 16.79 40, 700 19.55 12,300 13.95 26,600 12...... 19.45 39.900 12m. _ ..... 10.49 12, 300 12-. 11.22 17,700 TEXAS AND ADJACENT STATES B227

155. COLORADO RIVER AT COLUMBUS, TEX. Location. Lat 29°42'20", long 96°32'05", near right bank at downstream side of pier of bridge on U.S. Highway 90 at east edge of Columbus, Colorado County, 340 ft downstream from Texas and New Orleans Railroad bridge, 2.6 miles downstream from Cummins Creek, and at mile 135. Drainage area. Approximately 41,070 sq mi, of which 11,900 sq mi is probably noncontributing. Gage-height record. Water-stage recorder graph. Datum of gage is 155.52 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. iMaxima. April-June 1957: Discharge, 61,600 cfs 1 p.m. Apr. 29 (gage height, 27.15ft). 1903-11, 1916 to March 1957: Discharge, 190,000 cfs June 18, 1935 (gage height, 38.5 ft), computed on basis of records for station near Eagle Lake. Maximum stage known, 41.6 ft in July 1869 and on Dec. 6, 1913; information from local resident. Remarks. Flow partly regulated by Lake Travis and other smaller reservoirs, having a combined capacity of 3,979,000 acre-ft. Flood of Apr. 29, 1957 originated downstream from Lake Travis.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 - 4,390 22, 800 37, 500 11 362 8,560 39, 700 21 1,480 37, 200 10, 200 2...... 2,440 12, 100 42,000 12. . 348 8,140 40, 100 22 2,660 36,900 8,110 3_ 1,100 23, 400 44,100 10 329 15, 100 39, 800 23 2,340 37,000 7,620 4.... _ 832 30, 100 25, 400 14 316 23,900 44, 400 24 4.370 37,000 7,480 5 645 30, 500 29, 900 15 316 23, 500 23, 500 25 4,990 37, 200 7,180 6. ... 548 30, 800 42,200 16 342 23, 800 18, 100 26 6,950 37, 600 6,850 7...... 495 30, 900 31, 400 17 390 30, 400 30, 300 27 24, 700 41, 300 6,810 8 446 27, 000 35, 900 18 446 31, 800 28, 800 28 39, 800 46, 100 6,710 9 411 16, 200 39,000 19 470 32, 500 13, 300 29 59,800 32,400 6,620 10 383 9,340 38,900 20 1,000 35,900 10, 800 30 44,100 18,900 6,540 31 29, 600

Monthly mean discharge in cubic feet per 6,907 27,680 24, 310 Runoff, in thousands of acre-feet 411.0 1,702 1, 446,

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour . Gage Discharge Hour Gage Discharge height height height

April 22 April 25 Con. April 28 4 7E 2 Kflfl 7.68 5,950 19.00 31,800 8. ----- 7.39 5,560 20.54 36,900 April 23 23.23 46,600 4,210 1 9 25.87 56,500 4.18 1 940 6.11 3,980 10- 4.15 1,920 12m-- - 4.17 1,030 4.31 9 060 3 Q7H 26.75 60,000 10 3 040 g 6.17 8 ------27.04 61,200 12 5.37 3,160 6.60 4,570 12m--. 27.14 61,600 9.20 27.15 61,600 9,620 2------27.14 61,600 5.70 3.520 12 13.28 15,400 6 26.80 60,200 12m-- 6.32 4,230 25.56 55,400 10p.m_-_ 7.54 5,760 April 27 12 ------7.66 5,920 15.00 19,800 April 30 12m------17.22 26,200 s\p[tf> KO Ift An 30 400 12m 22.40 43,500 2 a.m ____ 7.70 5. 980 12- 18. 85 31.300 12 D.m ..... 19.67 33,900 B228 FLOODS OF 1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

Mayl May 27 Con. June 6

12m...... 15.83 22 100 21.66 40 800 JE Qflft 12p.m-_- .... 12.32 13 ' 300 22.27 jo nnn 46 800 10 22 92 7------23.27 MayS 12 .- 23.12 46, 200 9 ------23.15 46,300 12m-- 22.67 11.62 12 000 99 n9 42 100 6...... U Ort 11,400 12 19.46 33 ' 200 8 -- 11.07 23.33 10 8 -- 47 400 12m------47 400 2p.m._- .. ... 23 42 18.62 30, 500 4 00 01 46 900 6 on 7nfl 6 11.55 n CU\f) 9°. 1 7 46 400 8 29 400 12 13.56 16,100 6 . 22.94 18.36 12 18.56 30, 300 May ? 00 OrtA May 29 12 ------19.69 is nnn 8... 22 100 19.43 oo inn 12m.- 16.61 24 400 15.63 91 Ann 17 22 26 200 1Q Q^ 34, 800 g 17.68 07 K.nn 12m--- - 20.21 12 18.04 os f\nn 1 s onn 12 20.91 38,200 May 11 6 _ 13.93 17,000 9 -- 13.71 16, 500 12 p.m.-.. ... Q 17 S HAH 12m-- i o. QO 17 000 21.64 40,700 May H 12 . - 16.15 23,000 22.75 44,800 6 a.m ____ - 8.47 7,060 May SI 23.14 46,300 9 - - 8 46 7,040 17 84 98 nnn 9°. 9J. 46,600 12m-. 7,820 12m-- 18.48 °.n inn 6 23 09 9 10 8,070 O9 7Q AK Ann 6 ------10 - 20 00 oc nnn 9. . --.. 10.18 Q CQfl 12 20.11 OE jnn 12 . 21.59 40,600 12 in so 10 600 June 1 June IB May 13 36 000 18.74 30, 900 8 20.41 12m-. 15.65 21,600 12m - 13.10 1 C (Wt 12m--- on K.Q 07 inn 6 p.m... _ 14.11 on nnn 10 12.20 13,100 12.. 14. SS 1Q Crtn 12 21 74 12 May H Jii«e f June 16 12m - 16.75 01 s°. 41 400 11.65 6 p.m.--.. _ 17.10 25,800 8------21.78 4 11.87 12,500 10 17.13 91 SQ 41 600 6 - 13,400 12 17.10 f)K. Onn OO oc 43 400 12 ------22.51 43,900 15.89 22,300 May 15 12- 17.09 25,800 17.01 OK Knn 8- -- 16.81 oo. no 45,800 June 17 12m.------_ 16.48 9 17.97 28,400 4 p.m.-..-- - 16.05 10 12m-- 18.66 30, 600 8 15.20 Ofl Af\r\ oo. on 6 Kftn 19.19 32,400 12-- . 15.52 23.08 46,000 8------19.36 32,900 4---..-. .--.. 22.75 44,800 19". 47 33, 300 6 22.32 43,200 12 . 19.54 33,500 2 a.m ...... 15.52 8 21.74 41,100 6 . - 15.67 21 700 12 ----- 20 39 June 18 12m 16.27 23 400 19.55 33, 500 10 p.m..- _ - 17.54 27, 100 June 4 19.50 33, 400 12-- . 17.73 27, 700 1 S QO 31,200 6 19.37 33,000 May 17 8 17.49 27,000 8 19.17 32, 300 12m-. 19.90 34,700 12m- 18.72 30,800 15.70 18.47 30,000 8 p.m.. - 19.02 31,800 g 20 200 17.30 26, 400 12 19.10 11 12 -- 14.70 19,000 12- - 15.06 12p.m- . 20.93 June 5 13.06 14, 900 May 87 15.36 20, 800 12m--. 11.81 12,300 4 15.90 22,300 11.24 11,300 4 a.m __ .... 21.06 38,700 12 m---. 18.33 29, 600 8 11.08 11,000 8-.---..- __ . 21.25 O1 QQ A-l CflA 12 10.83 10.600 TEXAS AND ADJACENT STATES B229

156. COLORADO RIVER NEAR BAY CITY, TEX. Location. Lat 28°58'26", long 96°00'44", on right bank 6,300 ft downstream from bridge on State Highway 35, 7,100 ft downstream from Texas and New Orleans Railroad bridge, 2.8 miles west of Bay City ,Matagorda County, and at mile 32.6. Drainage area. Approximately 41,650 sq mi, of which 11,900 sq mi is probably noncontributing. Gage-height record. Water-stage recorder graph. Datum of gage is at mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 53,000 cfs 6 a.m. May 1 (gage height, 41.83ft). 1940, 1948 to March 1957: Discharge, 83,000 cfs July 4, 1940 (gage height, 48.2 ft, at site 6,300 ft upstream) observed by U.S. Army Corps of Engineers (stage, 46.6 ft adjusted to present site). Maximum stage since at least 1869, about 56.1, ft Dec. 10, 1913. Flood of July 1869 probably reached about the same stage. Stages of other floods as follows: May 8, 1922, 55.4 ft; June 1929, 55.0 ft; June 22, 1935, 54.6 ft; Oct. 5, 1936, 53.4 ft; Aug. 2, 1938, 53.4 ft; Nov. 27, 1940, 47, 6 ft. All these flood data from information furnished by Texas and New Orleans Railroad and adjusted to present site. Remarks. Flow partly regulated by Lake Travis and other smaller reservoirs, having a combined capacity of 3,979,000 acre-ft. Flood of May 1, 1957 origi­ nated downstream from Lake Travis.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 . 3,060 51, 800 27, 600 11 .... 674 10, 600 37, 300 21 593 32, 300 11,300 2 4,140 36, 300 35, 500 12_____ 652 8,320 36, 100 22____. 1,200 34, 400 10, 700 3 __-. 4,440 16, 500 40,600 13__.__ 588 7,430 35, 400 23 3,030 35, 100 7,960 4 2,600 19, 800 43, 200 14..... 580 11,900 35, 400 24 2,810 35, 300 7,100 5 _ 1,590 27, 500 34, 100 15 455 20, 200 38, 800 25 2,350 35, 000 6,850 6 .... 1,250 29, 100 30, 300 16. . 535 22, 500 30, 400 26____. 3,740 35, 100 6,730 7 1,020 29, 100 39, 900 IT- 559 21, 700 18, 900 27____. 5,670 36, 100 6,210 8. _____ 890 29, 400 36, 100 IS 531 26, 200 26, 800 28____. 21, 400 38, 700 5,990 9 ... . 773 27, 200 34, 600 19 463 29, 800 27, 800 29. ... 35, 600 42, 300 5,910 10 - 732 18, 700 36, 800 20 471 30, 500 16,600 30 48, 400 37, 600 5,780 31 23, 900

Monthly mean discharge, in cubic feet per se 5,027 27, 750 24,560 Runoff, in thousands of acre-feet 299.1 1,706 1,461 B230 FLOODS OF 1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 21 April SO Con. May 29 12 p.m__. _ 16.28 41.25 51, 200 38.03 41, 60C 12 41.67 52,500 12m__._ __.. 38.45 42, 80( April 88 38.64 43,4(X 12 38.41 42, 70( 16.78 9 17.33 1,310 41.83 53, 000 May 30 12 m__ _ . 17.01 1,120 52, 700 6p.m__ _ ... 17.36 1,330 41.20 51, 100 12m._ _- _ 37.13 38, 900 12...... 18.35 1,940 12 40.13 47, 900 34.10 30, 000 April 83 May H May SI 6a.m_--_ __ . 19.51 2,810 38.48 42, 900 12m_ _ .... 30.95 21, 900 I2m_-- . 20.12 21, 100 4p.m___ ..... 20.23 3,440 34.02 29, 800 12...... 31.38 23, 000 12. ... __ 19.92 3,160 31.65 23, 600 June 1 April 84 MayS 12 m.. - 33.28 27, 800 12 m__ 19.58 34.80 32, 000 12m...-.-... 27.82 15, 100 April 25 26.98 13, 500 12-...... 27.30 14, 100 18.72 2,200 36.12 35, 900 12m-...... 18.72 2,200 May IS 36.90 38, 200 19.06 2,450 12 p.m...... 23.88 7,710 June 3 April 26 37.74 40, 700 12m...... 20.54 3,740 12p.m...... 21.36 4,600 9,290 12m-.. -.. 26.07 11, 600 April 87 27.67 14, 800 12m. ______38.70 43, 600 12.... . 28.45 16, 400 38.78 43,800 6 a.m__ __ ... 21.26 4,490 6... ----- 38.68 43,500 8-...... 21.45 4,700 May 15 38.11 41, 800 12 m__ 21.52 4,770 3 p.m.... ._ 21.62 4,880 30.34 20, 500 6- ____ ... 22.32 5,650 31.05 22, 100 9...... 12 31.37 12m- 35.41 33, 700 10...... 24.80 9,240 33.11 27, 300 12. . 26.35 12, 200 May 18 June 8 April 88 31.47 23 200 22 900 33.23 27, 60( 27.72 14, 900 ?0. 57 21, 000 12m...... --. 33.98 29, 700 6__ ... . 28.90 17, 300 12 p.m...... 35.93 35, 300 12m...... May 17 32.49 25, 700 12...... 33.63 28, 700 30.39 20, 600 12m... ._ 30.64 21, 200 12 m. --... 37.46 39,900 April 89 21. 800 37.77 40, 800 12 -._-____-_. 37.49 40, 000 12m .. .. 36.07 35, 700 12 p.ni-__ ... 38.33 42,500 12m______32.73 26, 300 June 8 33. 45 28,200 April SO 12m..- 35.98 35, 400 May 88 10 p.m... 35. 42 33, 800 12m. .. 40.54 49. 100 12 n.m 37.02 38. 600

LAVACA RIVER BASIN 157. LAVACA RIVER NEAR EDNA, TEX. Location. Lat 28°57'35", long 96°41'10", near center of downstream side (relocated) of bridge on U.S. Highway 59, 660 ft upstream from Texas and New Orleans Railroad bridge and 2.8 miles southwest of Edna, Jackson County. Drainage area. 887 sq mi. Gage-height record. Wire-weight gage read twice daily. Datum of gage is 13.88 ft above mean sea level, datum of 1929 (levels by U.S. Army Corps of Engineers). TEXAS AND ADJACENT STATES B231

Discharge record. Stage-discharge relation denned by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 9,440 cfs 12 m. Apr. 29 (gage height, 23.55ft). 1938 to March 1957: Discharge, 73,000 cfs July 1, 1940 (gage height, 32.51 ft). Maximum stage known, 33.8 ft May 25, 1936, from information furnished by local resident (discharge, 83,400 cfs).

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 3,320 2,720 363 11 34 99 116 21..... 1,510 188 284 2. 3,190 463 1,530 12..... 31 82 87 22..... 3,980 123 158 3 315 315 1,390 13 28 77 72 23 4,020 94 110 4...... 168 244 1,070 14..... 25 850 62 24. 443 76 59 5 - 114 187 647 15 23 620 56 25-.... 223 64 43 6 79 155 734 16 25 203 49 26 170 58 45 7 . 59 131 598 IT- 27 128 49 27 1.740 168 39 8_ 50 113 727 IS 23 151 48 28 5,780 1,840 31 9 41 103 358 19 32 1,140 54 29.-... 8,910 2,460 29 10 35 99 170 20 678 394 394 30 7,660 602 28 31 320

Monthly mean c ischarge, in cubic feet per 1,424 460 310 Runoff, in acre-fe et 84,760 28, 300 18, 450

158. NAVIDAD RIVER NEAR GANADO, TEX. Location. Lat 29°02', long 96°33', on left bank near upstream side of bridge on U.S. Highway 59, 100 ft upstream from Texas and New Orleans Railroad bridge, a quarter of a mile downstream from Sandy Creek, and 2% miles south­ west of Ganado, Jackson County. Drainage area. 1,116 sq mi. Gage-height record. Wire-weight or staff gage read twice daily. Datum of gage is 13.62 ft above mean sea level, datum of 1929 (levels by U.S. Army Corps of Engineers). Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 18,100 cfs 10 p.m. Apr. 30 (gage height, 30.08 ft, from graph based on gage readings). 1939 to March 1957: Discharge, 64,500 cfs July 2, Nov. 26, 1940; maximum gage height, 36.54 ft July 2, 1940, from floodmark. Maximum stage known since at least 1909, 39.8 ft May 27, 1936. Informa­ tion furnished by Texas and New Orleans Railroad (discharge, 94,000 cfs, from rating curve extended above 60,000 cfs). B232 FLOODS OF 1957

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 . 4,240 15, 500 1,200 11 33 118 395 21 981 320 768 o 4,800 10,400 5,040 12 28 102 290 22 2,490 155 270 3... - 2,450 4, 650 4,320 13 23 84 224 23..... 4,690 71 196 4 718 1,350 5,170 14.-._. 20 194 175 24 2,360 43 120 5 426 605 4,950 15 18 553 134 25 811 26 93 6__ 196 384 4,400 16 19 154 109 26 410 19 77 7 122 267 5,770 17 18 74 92 27..-.. 2,340 91 66 8 77 198 4,180 1 ft 17 168 102 28 6,580 1,100 52 9 51 168 1,620 19 14 730 172 29__-__ 8,940 1,620 46 10 39 141 601 20 21 367 490 30._._. 15, 300 1,490 44 31 663

Monthly mean c ischarge, in cubic feet per s pcond 1,941 1,349 1,372 Runoff, in acre-ftet 115, 500 82, 920 81,650

GUADALUPE RIVER BASIN 159. GUADALUPE RIVER AT COMFORT, TEX. Location. Lat 29°58', long 98°54', on left bank at downstream side of pier of bridge on U.S. Highway 87, a quarter of a mile downstream from Cypress Creek, half a mile east of Comfort, Kendall County, and at mile 397. Drainage area. 836 sq mi. Gage-height record. Water-stage recorder graph except May 11, 12. Datum of gage is 1,372.03 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Discharge May 11, 12 estimated on basis of records of weather and records for station at Spring Branch. Maxima. April-June 1957: Discharge, 35,200 cfs 2:30 p.m. Apr. 24 (gage height, 24.59 ft). 1917-32, 1939 to .March 1957: Discharge, 182,000 cfs July 1, 1932 (gage height, 38.4 ft, from floodmarks and from data furnished by Texas Highway Department), from rating curve extended above 33,000 cfs on basis of slope-area measurement of peak flow (flood originated above Cypress Creek). Maximum stage since at least 1848, that of July 1, 1932. Flood of July 16, 1900, reached about same stage; information from local residents.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

l ...... 37 249 1,060 11 23 185 176 21 46 134 108 2_-.. 36 200 638 12 21 145 180 22 ..... 340 120 101 3. 35 186 620 13 20 776 202 23 194 107 90 4...... 31 170 468 14 18 279 172 24 10, 300 96 88 5.. _ .. 30 162 402 15 19 241 149 25 1,170 88 84 6. . 26 135 360 16 21 144 134 26 1,240 80 79 7 ___ .. 26 124 280 17 _ .- 24 130 118 27 2,310 1,250 71 24 119 245 18 25 267 120 28._.__ 652 936 66 9 24 1,110 216 19 390 214 124 29 460 555 60 10 23 517 196 20 78 147 120 30 457 392 54 31 1,450

Monthly mean c ischarge, in cubic feet per second 693 345 226 Runoff, in acre-fc et 35, 900 21, 240 13, 450 TEXAS AND ADJACENT STATES B233

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April #3 April 27 Con. Mayffi 12p.m...... 3.84 250 5.42 768 6.90 1,300 12--...... _ . 5.05 651 6.30 1,080 8 - 5.82 921 Man 8 12m.... _ .. 5.70 885 3.46 172 5.07 684 7--.-.--- _ .. 3.95 278 3.04 119 8 10.20 2,550 9...... 15.25 8,420 10. . . 16.80 11, 300 4.89 627 11 _ ...... 19.60 17,700 116 4.64 546 12m...... 20.55 20, 400 2 ...... 5.99 948 4.35 456 12:30 p.m ..... 19.67 17, 900 3 ...... 6.93 1,290 2 24.10 33,200 3:30.-. -. 6.75 1,220 May 30 2:30... -. 24.59 35, 200 4.... _ -.-.-. 8.90 2,130 4...... 21.60 23, 800 5...... 11.40 12m.... 4.13 385 6 . 18.60 15, 700 6...... 12.00 4,690 3.97 342 8... . . 15.60 9,620 8...... 10.30 2,940 10 12.25 4,900 10 7 V7 1,530 May 31 12 .. 9.70 2,640 12-...-.. _ -. 6.37 1,080 3.93 332 April %5 7...... 4.09 375 8 . 11.00 3,550 2a.m_.__ ..... 8.15 1,940 * 95 714 9..-. ... 12.87 5,880 4...... 7.25 1,570 12m...... 4.40 444 10 11.20 3,760 8...... 6.10 1,180 3 79 OCR 12m... _ ... 9.10 2,240 12m...... 5.55 990 8.25 1,840 4.88 789 6 6.13 1,020 12 4.71 738 9...... 5.49 819 2.86 92 12 5.16 714 April 86 May 27 June 1 12m...... 4.28 609 549 2 S7 94 4.80 597 10 7.65 1,760 10 10 4.63 £43 11...... 14.30 8,260 12m..... 3.25 155 12m... 4.60 534 12.,...... 16.53 12,500 3.51 208 4.67 558 2 5.40 762 2...... 7.35 1,470 April 27 3 ... 7.05 1,330 3 ..... 9.35 2,370 4 __. 9.40 2,380 4...... 11.58 4,180 2 a.m.... _ . 14.05 7,640 6 11.28 3,840 5 - 9.90 2,670 4...... 11.30 3,860 11.70 4,310 6..-. ___ - ... 7.95 1,700 6 8.38 1,880 8 11.40 3,970 8 5.93 954 8...... 7 4.R 1,490 10 9.70 10 5.28 750 12m..-. _ -. 6.29 1,050 12...... 8.05 1,750 12 5.00 663

160. GUADALTJPE RIVER NEAR SPRING BRANCH, TEX. Location. Lat 29°51'40", long 98°23'00", on right bank at downstream side of pier of county highway bridge, 4 miles southeast of Spring Branch, Comal County, 6 miles downstream from Curry Creek, and at mile 334. Drainage area. 1,282 sq mi. Gage-height record. Water-stage recorder graph except 5 p.m. Apr. 3 to 10 a.m. Apr. 16, 3 to 7 a.m. and 6:30 to 9:30 p.m. Apr. 22, 4:45 to 6:15 p.m. Apr. 24, 8 p.m. Apr. 24 to 12:30 a.m. Apr. 25. Graph was reconstructed Apr. 22, 24 on basis of fragmentary gage-height record. Datum of gage is 948.13 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation denned by current-meter measure­ ments. Discharge Apr. 4-15 estimated on basis of recorded range in stage and records of weather. Maxima. April-June 1957: Discharge, 25,600 cfs 7 p.m. Apr. 24 (gage height, 24'.55ft). 1922 to March 1957: Discharge, 121,000 cfs July 3, 1932 (gage height, 42.10 ft), from rating curve extended above 70,000 cfs. Maximum stage known since at least 1859, about 53 ft in 1869. Flood of July 1900 reached a stage of about 49 ft; information from local resident. 656087 O 62 IB B234 FLOODS OF 1957

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 ... 415 917 2,830 11 40 610 435 21___- 230 335 261 2_ 132 575 3,310 12.. 35 363 407 22 5,720 295 247 3 74 466 1,530 13. 35 754 534 23..... 925 261 226 4 70 411 1,080 30 1,280 431 24-_.__ 6.180 236 212 5_ 65 395 912 15... _. 30 2,060 375 25 . 15,900 216 202 6.-...-. 60 258 900 16..... 33 507 339 26__.__ 1,950 222 194 7 . 55 149 685 34 315 311 27 5,040 1,390 184 8 _ 50 117 600 10 34 444 294 28 -. 2,110 2,910 174 9 ...... 50 117 530 19 847 812 275 29. . 2,310 1.200 161 10-. - 45 2,120 476 20.... _ 678 427 268 30 1,170 786 146 31 2,020

Monthly mean d ischarge, in cubic feet per 1,478 741 618 Runoff, in acre-f set 87, 960 45, 560 36, 750

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April SI April W May 13 12p.m...... 2.75 170 9.83 5,250 3.10 244 9...... 9.02 4,520 8.--. ------3.63 480 April 28 9.30 4,770 9...... 3.78 561 12.22 7.490 12m...... 3.58 458 2 a.m...... 3.30 383 12...... 4.35 918 3...... 6.35 816 3:30... 9 74 10 5.88 1,920 4- .... 9 CA 4 QCfl 12 6.17 2,130 7.. . 12. 12 7,390 2,020 9:30...... 9.78 5,200 12m_.___ . 5.38 1,570 12m _ - _ .. 12.25 1,420 4p.m...... 14.64 10, 300 2,400 6.69 2,510 11.00 6,300 12 - 6.50 2,380 12m....--.-- 4.38 936 12...... 3.76 548 April $9 April S3 May IB 6.37 2,280 12m.. _ .... 3.78 605 6 ...... 7.82 3,450 3.67 502 2 p.m...... 3.73 580 10 6.88 2,670 4.22 828 5 3.92 680 12m...... 6.57 2,430 4.17 792 12..-. _ -..-. 3.83 630 12 p.m...... 4.83 1,220 9.25 4,720 4.25 846 April 24 April 30 12 m...... 3.65 538 4.45 984 May 17 5p.m...... 8.45 4,000 12m. .__-__. 4.55 1, 050 e.on 15.00 10, 800 4 69 12 p.m...... 3 1 ^ 261 6-- ...... 17,600 4 79 1 1 Cf) 7. .. 24.55 10 . May 18 12 ...... 17.00 13, 400 12 5.12 1,400 3.22 287 April 25 May 1 3.94 650 12.-. 4.45 984 16.27 A QK 6...... 20.00 4.. . .-. A C7 May 19 12 m...... _ 24.40 4.22 828 1 p.m..,., ... 24.30 25, 100 12 p.m...... 3.96 ' 660 5 ... -.-. 20.00 17,600 4.82 1,210 7...... 15.00 10,800 May 9 4.07 726 8 ..... 11.40 6,670 502 12... ____ .. 6.50 2,380 o 70 137 April 26 May 10 1:30 a.m...... 6.15 2,110 4.30 4. _ .--....-. 2 XQfl 3 6.03 May 27 6 ...... 6.63 2,470 6- - ...... K 00 1,870 8 ..... - 6.22 7.73 3.10 244 9 ...... 6.40 966 3.42 379 12m...... 5.60 1,720 1,910 10p.m...... 5.43 1,600 May 12 9..-..- _ .. . 8.25 3,820 12...... 5.40 1,580 12 p.m...... 3.18 272 12 6.87 2,670 TEXAS AND ADJACENT STATES B235

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957- Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

Mag 28 May Si Con. June i 6.65 2,490 5.55 6,180 7.02 2,790 6 . 6.93 2,710 9...... 5,470 1 ...... _ . 11.22 6,500 12 m__ ...... 8.52 4,070 12 9.37 4,830 12m... _ ... 7.55 3,220 12 p.m...... 5.40 1,580 5.97 1,980 6.00 2,000 12-. 5.20 1,450 12p.m...... 3.98 670 12m. __ .... 5.42 1,590 June 3 1,380 5.67 1,770 May 31 6 ..... 8.53 4 080 9.... _ . _ .. 5.32 1,530 9.--.---...--. 6.62 2,470 12 m__ _ .... 5.23 1,470 3.93 645 11 7.08 2,830 5.37 1,560 12m...... 4.07 726 12...... 2,810 12 5.05 1,350

161. GUADALUPE RIVER ABOVE COMAL RIVER AT NEW BRAUNFELS, TEX. Location. Lat 29°42'55" long 98°06'40", on right bank at New Braunfels, Comal County, 1.1 miles upstream from Comal River and at mile 281. Drainage area. 1,516 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 586.65 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Discharge 12 p.m. Apr. 24 to 4 p.m. Apr. 25, 5 a.m. to 9 a.m. Apr. 27, 5-11 p.m. May 27, and 9-10 p.m. June 1 computed from backwater studies. Maxima. April-June 1957: Discharge, 26,900 cfs 12 p.m. Apr. 25 (gage height, 18.13ft). 1927 to March 1957: Discharge, 101,000 cfs June 15, 1935 (gage height, 32.95 ft). Maximum stage known, 38 ft in 1869 and in December 1913; information from local residents.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 . 241 1,560 4,340 11 59 1,400 800 21 624 630 475 2...... 430 1,110 4,390 12 56 681 740 22 3,510 536 460 3...... 223 885 2, 510 13 50 600 700 23 4,550 492 438 4 ... 155 765 1,950 14 49 1,330 800 24.-.. 2,440 460 408 5 114 698 1,560 15 50 985 670 25 18, 800 428 394 6.. .. 97 625 1,570 16 63 1,600 603 26 9,290 409 374 7 89 560 1,260 17 58 600 565 27 5,770 1,870 367 8 77 513 1,080 18 52 556 532 28 5,150 3,550 347 9. . 68 480 973 19 222 931 499 29..... 3,030 2,410 334 10 62 828 888 20 1,060 842 490 30 1,880 1,480 315 31 3,060

Monthly mean d ischarge, in cubic feet per 1, 944 1,060 1,028 Runoff, in acre-f 3et 115, 700 65, 200 61,150 B236 FLOODS OP 1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discnarge Hour Gage Discharge height height height

April 21 April 27 Con. May IB Con. 2.52 7 00 6,100 10p.m__ ..... 2.82 68C 10 ...... 5,700 11 . 4.20 2,410 6.62 K QCf\ 12...... 4.76 3, 19C 12m.... 6.82 6,000 2.50 Af\Q May 16 4.. _ . _ . _ 2.52 423 3...... 7.42 6 2.68 KAQ 7.40 6,500 4.87 3,350 7 ...... 2.80 660 6 ...... 6 GO 5,900 2 4.77 3,210 8...... __ - 3.75 1,780 5,700 5 .. . 4.11 2,280 10 2 QAA 10 6.55 5,760 S...... 3.73 1,750 11. _ . _ .... 12 ...... 6.70 5,980 12m 3.37 1,280 12m. ..--.-.. 4.69 3,100 3.13 993 4.50 2 QQA April 28 8 ..... 2.99 850 2...... 3,530 12...... 2.88 740 4_ 6.75 7.75 7, 500 6.. _ . _ . 7.28 6,820 May 17 7 7.28 6.820 6...... Q En 10 6.90 7 .... 12m. _..._... 2.72 584 12...... 7.85 9...... 2.66 532 5 A 1* 4,130 12...... 2.63 507 April 23 4.60 2,970 7. . 4.40 2 ftQA 9.00 9,400 9.. ... 2..... _ .- _ 9.50 10 4.75 3 1 HA 388 3...... 9.85 11 4,090 4...... 9.87 10,800 12 S CO 4,280 May 27 5 ...... 9.45 10, 100 7 ...... 7 60 7,280 April 29 2.48 394 9...... 5.50 4,240 11 . 2.52 423 10 4.80 3 OCA. 4.48 2 QAA 12m .. . . 2.69 557 12m___. _ .. 4.25 4 OQ 2 AAA 3.04 900 3 p.m...... 3.87 1,950 8 4.31 2 560 3 ...... 4.00 2,130 5_ ----.. 3.75 1,780 12m. _-...... 4.54 4.-.-.-.--.... 5.90 4, 820 6 3.90 1, 990 A KC 2 CJAA 5,800 7 ...... 3.57 1,540 4...... 4.90 8.30 5,200 12...... 3.29 1,180 6...... 5.10 9 6.75 12... _ ...... 4.37 2 ACA ]! 3,500 April 24 12 5.37 4,050 April SO 3.10 1 Qfift 12m... __ . 2.99 OCA 4.07 2 OOA 6 p.m... _ .. 2.88 740 8.. ... 1,960 5.60 4,380 8...... 3.35 1,260 12m...... 3.77 5.11 9...... 4.50 2,830 1,610 4.90 3,390 10 10.00 11,000 12 . 1 4fin K 9Q 12...... 15.34 20 ' 000 9 ... 3,880 May 1 12m...... 4.72 3,140 April 25 4.59 2,960 8a.m _ .... 3.56 1,530 3 4.65 3,040 3a.m..__. .... 14.40 15,000 11 ...... 3.72 1,740 6 ...... 16.20 18,000 12m...... 3.73 1 7CA 7...... 3,190 7 ...... 16.50 19,000 3.60 1,580 10 5 OC 3 Q9O 8.-..-.. _ .. 16.30 20,000 12 ...... 1,350 11 c oe 12m. _ ..... 13.80 14.000 12 e or 13.40 14,000 2 _ .. 13.45 H AAA 4...... __ . 14.40 16,000 467 8...... 17.00 24, 100 5 25 S oon 10 17.90 26, 400 2...... 12...... 18.13 26,900 6...... 12 p.m...... 2.90 760 9 4.15 April 26 12m...... 3.99 2,120 May 14 12 p.m...... 3.71 1,720 17.65 OK 7AA 4 ___ ...... 16.25 22, 300 2 QQ 6...... 13.35 16,400 6 ...... 9 Q9 70A 8...... 9.00 9,400 9...... _ . 3.03 fiQA 3 50 1 450 9...... 7.15 6,630 10 ... 3.14 1 AAA 3 07 1 * 280 11 5.60 4 380 3 CO 1,610 12m...... 5.10 3,' 670 3.87 1 Q^t\ May 31 2p.m __ . ... 4.67 3,070 3 GO 9 n.9fl 10 4.28 2,520 6 ... . 1,910 3 QO 1 220 12...... 4.70 3,110 12...... 3.38 i 9on 3 4 A I qOA 8...... 4.85 3,320 April 27 May 15 9 ...... 8.16 8,100 10...... 7.83 7,610 3a.m ...... 5.85 4,740 4a.m...... 3.17 8 AC 7 940 5...... 7.35 6,400 8 ...... 3.03 QQA 12m...... 7.10 6 ecn 6...... 7.56 6,700 12m. __ . ... 2.94 800 1 p.m.... . 6.29 5,380 TEXAS AND ADJACENT STATES B237

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May SI Con. June 1 Con. June 2 Con. 5.96 4,900 12m...... 6.04 5,030 4.78 3,220 3__ ... 5.35 4,020 2p.m...... 5.58 4, 350 10...... 4.74 3,170 5__ ...... 4.10 2,270 5.20 3,810 12m.. _. 4.78 3,220 6...... 3.86 1,930 6...... --_-._ 6.70 5,980 5.50 4,240 8_ - 3.64 7...... 5,190 6.75 6,050 12__. ._.._._.. 3.52 1,480 9. .-___.--_... 5,300 6...... 7.40 6,990 10...... _ .. 6.70 5,500 8...... 7.12 6,580 12... _ ._..__ 5.67 4,480 12...... 5.45 4,160 3.51 2. 3.60 ].580 June S 3, 3.85 1,920 2 a.m ...... 4.90 3,390 5...... 4.90 3,390 2 a.m...... 4.55 2,900 8 4.22 2,440 7...... 6.06 5,050 3...... 4.38 2 660 4.03 2,170 8...... 6.28 5,370 4.49 2,820 3.98 2,100 9...... 6.33 5,440 5...... 4.86 3,330 4...... _. 4.10 2,270 11 6.41 5,550 6...... 5.18 3,780 12 - 3.95 2,060

162. COMAL RIVER AT NEW BRAUNFELS, TEX. Location. Lat 29°42'05", long 98°07'10", on right bank 200 ft upstream from San Antonio Street viaduct in New Braunfels, Comal County, and 1.1 miles upstream from mouth. Drainage area. 117 sq mi. Normal flow of river comes from springs; drainage area of stream not applicable. Gage-height record. Water-stage recorder graph. Datum of gage is 582.80 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments below 600 cfs and above 2,000 cfs by previous rating extended above 1,600 cfs on basis of slope-area measurements at 6,700 and 35,000 cfs. Dis­ charge 6 p.m. Apr. 22 to 9 a.m. Apr. 23, 12 p.m. Apr. 24 to 9 a.m. Apr. 26, 6 a.m. Apr. 27 to 12 m. Apr. 28, 9 a.m. to 4 p.m. May 31, 9 a.m. to 12 m. June 1, and 6-7 p.m. June 2 computed from backwater studies. Maxima. April-June 1957: Discharge, 8,610 cfs 6 p.m. May 27 (gage height, 17.45 ft). 1927 to March 1957: Discharge, 35,000 cfs Sept. 11, 1952 (gage height, 36.14 ft, from floodmark), from rating curve extended above 1,600 cfs on basis of slope-area measurements at 6,700 and 35,000 cfs. Maximum stage known since at least 1869, 37.65 ft Oct. 17, 1870; gage datum according to floodmark about half a mile downstream (probably some backwater from Guadalupe River). Remarks. Normal flow of river is from Comal Springs emerging from the Ed­ wards limestone in the Balcones fault zone about 1 mile upstream. B238 FLOODS OF 1957

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 . 110 190 1.270 11.. 84 174 246 21 117 179 234 2 . 88 188 902 19 84 176 246 22 479 177 230 3 - 88 186 295 13 78 202 246 23.. 353 176 230 4. .. 88 184 257 14.__. _ 78 184 242 24 .. 603 175 230 5 80 184 287 15..... 86 178 242 25 1.250 176 226 6 - 82 184 267 16 90 176 242 26 1,260 223 222 7 82 178 254 17 86 176 246 27. 2.150 3,110 222 8 82 179 250 18 88 176 238 28 841 1.130 215 9. ... 78 177 250 19...- 403 178 234 29,.. __ 533 238 211 10 ... 80 177 254 20 141 180 234 30 215 218 211 31 913

Monthly mean d ischarge, in cubic feet per s 329 334 298 Runoff, in acre-feet 19, 590 20, 510 17. 720

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 85 April 38 May 18 Con. 12p.m.. __ 3.80 147 5.50 700 4.22 299 5 .... 6.40 560 slpilt> #4 7 ...... - 6.60 500 May SO 9 a.m.-...... 3.78 141 8...... 6.44 410 11 . 3.70 120 12m...... 4.35 290 12 p.m...... 4.00 211 12m...... __ 3.74 130 4 00 211 6 p.m.-- ..... 3.74 130 4 ...... 4.15 May 51 8...... 4.50 440 9:30.. 9.75 3,560 5.20 930 6 a.m...... 4.01 215 10 . .. 10.15 3,800 7 .- 6.20 1,600 7...... 5.18 914 12...... 13.24 7.70 2,410 8 ... 7.90 2,520 g 7.80 2,460 9 ...... 11.10 3,400 1,650 12m... __ . 7.75 2,000 13.45 6.54 1,400 3 ...... 14.36 2,500 2.. _ .. _ ... 5.62 1,000 8...... _ 3 ...... 5.13 720 10 11.95 1,100 1,540 4 ...... 4.80 560 12m.... 10.70 380 4. .... 5.03 794 6 4.44 407 10.30 380 5 . . 660 8 - 4.28 326 3.... _ .. 10.42 640 g 434 10 4.21 294 6-. . . 11.82 950 10 390 12. 4.19 286 9...... 13.20 1,100 375 12 ...... 13.72 1,000 4.20 290 12._ . .... 4.09 246 4.27 322 13.57 830 3 - 4.16 274 1:30...... 1,000 5 ...... 4.14 266 3...... 13.05 730 219 9 ..... 4.71 450 4 ...... 19 S9 790 10- 430 4:30...... 1,100 May S7 520 5...... , 12.90 4.60 380 7...... 11.05 1,100 3.93 187 4.29 330 9 ...... 10.25 11 ...... 3.96 197 4 5.20 930 12m...... 7.25 2,170 12m . -... 4.46 418 6 8.80 3,020 6.09 1,530 1,540 11.57 4,640 3.... . 5.62 8.20 2,680 10 8.80 3,020 5 ... .. 5.12 3- . 13.00 5,500 7.35 2,220 8...... 4.67 542 4-...... 7,930 9 ... 4.55 470 5...... 17.35 8,530 12 .. __ .. 6.30 1,660 6. .... 17.45 8,610 April %1 7. .... 8,490 7.14 2,110 12 4,690 2 7.41 2,250 2a.m...... 9.00 3,130 3 7.12 2,100 3 ...... 9.94 3,680 5 . 5.86 1,390 4 _ ...-. ... 10.00 3,710 5.38 1,070 5...... 9.67 3 K ft 2,250 8 . 4.88 681 7...... 3.0CO 1,490 10 4.66 536 12m.-.. _ _- 7.12 2,000 8...... 5.30 1,010 4.56 476 3 p.m...... 7.02 1,900 10 ...... 4.88 681 2 p.m. ._ . 4.50 440 8 ...... 5.60 1.100 512 5.62 790 9- . . 5.42 950 345 7 5.64 590 12...... 5.32 790 6 ... __ ___ . 4.24 308 12 . 4.33 350 TEXAS AND ADJACENT STATES B239

163. BLANCO RIVER AT WIMBERLEY, TEX. Location. Lat 29°59', long 98°04', on left bank 800 ft downstream from Cypress Creek, 1,200 ft upstream from bridge on State Highway 12, and a quarter of a mile south of Wimberley, Hays County. Drainage area. 364 sq mi. Gage-height record. Water-stage recorder graph except 7 p.m. May 19 to June 30. Datum of gage is 802.23 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments below 30,000 cfs and by slope-area measurements at 95,000 and 113,000 cfs. Discharge May 20 to June 30 estimated on basis of record for station near Kyle. Maxima. April-June 1957: Discharge, 62,600 cfs 8 p.m. Apr. 24 (gage height, 24.73 ft). 1924-26, 1928 to March 1957: Discharge, 113,000 cfs May 28, 1929 (gage height, 31.10 ft, from floodmark), from slope-area measurement. Maximum stage known since at least 1869, that of May 28, 1929; infor mation from local residents. Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 . 206 441 1,210 11 21 162 270 21 142 200 170 2__ _ 67 344 1,230 12 21 133 290 22 3,310 170 160 3 _ 44 274 840 13 20 355 540 23 . 408 160 160 4_ 34 250 730 14 18 356 310 24 10, 300 160 150 5 . 28 228 690 15 18 182 270 25_____ 2,610 150 140 6 26 192 730 16 23 199 230 26 1,200 180 130 7_.____. 25 175 570 17 21 175 220 27 4,810 670 120 8 25 165 360 18_____ 18 498 210 28. - 2,000 870 120 9... _ 21 155 310 19 248 684 190 29 1,930 400 120 10 21 293 2SO 20 364 270 180 SO ­ 606 340 110 SI. 1,540

Monthly mean c ischarge, in cubic feet per s 953 335 368 Runoff, in acre-f(jet 56, 700 20, 570 21, 920

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1951

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April gl April g4~ Con. April W 5.70 4,800 12p.m.. 0.75 103 3 p.m. ___ 1.24 266 7.34 7.110 April 2g 4 1.50 380 9.91 11, 500 5 . 4.00 2.600 10 6.54 5,960 4 a.m.- ...... 2.07 709 5:30.. ------12.00 16, 000 5.09 3.970 5 . 1.95 630 6 14.50 22. 500 6p.m.. 3.21 1,710 6___.--_.__-__ 3.87 2,440 6:30.. 19.00 36,600 2.68 1.210 7:30--- 3.27 1,780 24.73 62,600 9_____. ______6.30 5.620 9-30- - 19.00 36, 600 April $8 10:30 - 11.35 14,600 11. ______14.00 21, 100 2.23 829 12m... ______9.50 10, 800 12___. ______11.00 13, 800 2.20 805 2p.m...... 5.70 4,800 April 25 6 3.80 2,360 4 ______.. _ 3.75 2,300 7 ------5.18 4.090 6 . ... 2.93 1,430 2a.m ...... 6.77 6,280 5.39 4,380 12_____. ..-.__ 1.97 642 6 4.07 2,680 4.80 3,590 April 25 12 m... .__--- 2.84 1.350 11 7.30 7,050 12 p.m...... 2.10 730 12 6.80 6.320 12 m______1.37 322 1.22 258 April g6 April g9 11...... 1.76 518 2.06 702 3.89 2,470 12.. ______1.78 529 3 . 3.39 1.910 2.64 1,170 7 2.39 957 2.15 768 April 24. 12m.- . 2.02 674 2a.m ..... 1.92 612 1.85 570 May 9 1.33 304 19 ' 6.66 6,120 0.92 152 B240 FLOODS OF 1957

164. SAN MARCOS RIVER AT JAILING, TEX. Location. Lat 29°39'55", long 97°39'05", on left bank 390 ft downstream from bridge on State Highway 80, 1 mile south of Luling, Caldwell County, and 8 miles upstream from Plum Creek. Drainage area. 833 sq mi. Gage-height record. Water stage recorder graph except Apr. 2-6. Datum of gage is 322.05 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation denned by current-meter measure ments. Discharge Apr. 2-6 estimated on basis of records of weather and rec­ ords for nearby stations. Maxima. April-June 1957: Discharge, 29,400 cfs 3 p.m. Apr. 25 (gage height, 32.70ft). 1939 to March 1957: Discharge, 57,000 cfs Sept. 12, 1952 (gage height, 34.95ft). Maximum stage known since at least 1859, 40.4 ft in 1869 or 1870; informa­ tion from State Highway Department. Flood of May 29, 1929, reached a stage of 37.1 ft and is the second highest known.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

I...... 388 1.090 1,840 11 . 100 484 561 21 276 459 394 2_ . 170 866 7,010 12 98 443 527 22..-.. 466 405 383 3 . 150 736 3,070 13 95 856 540 23 2.180 380 371 4 140 650 1,220 14 95 607 770 24 776 361 362 5 130 592 1,020 15 110 583 552 25 12, 100 347 352 6 120 537 969 16 - 650 405 490 26 6,400 663 344 7 115 492 952 17. 132 400 460 27 .. 12. 600 3,530 331 8. . 112 460 796 18 96 365 439 28 8,710 10.600 318 9...... 103 464 657 19 535 459 423 29 5,700 1,420 309 10 100 452 606 20-_ 391 716 400 30 2,430 670 297 31 567

Monthly mean d ischarge, in cubic feet per s 1.849 1,002 892 KunofT, in acre-feet. ... 110,000 61, 600 53,080

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April eg April 25 Con. April 00 1 p.m.... __. 4.74 301 6 91) 593 4 a.m ... ___ 26.86 7,570 3______._ 5.05 342 6.23 AQ 1; 8 ______25.38 5,900 5______6.32 507 6 42 10. ______25.09 5,650 8.. ______8.74 844 10 1,270 12m.. ._____. 25. 01 5,590 10 __ 9.01 881 12 14.48 1,780 24.92 5, 520 12----... _ 8.55 817 7 24.97 5, 560 April %5 10-.----_ ___ 24.68 5,340 12 24.92 5,520 2a.m _ _ . 8.00 740 2 a.m...... 18.26 2,710 April 17 4____. ______9.30 922 4 -- 19.96 3,220 6 12.96 1,490 6 3,440 25. 20 5,740 8. -. . 16.80 2,320 9.__..____ 21.34 3,670 6______26.74 7,410 10..-- ... 19.50 3,080 10_.___. 22.00 3,900 10 ______28.15 9,810 12m.. ._.____ 20.76 3, 470 11 4,620 28.86 11,500 2 p.m...... - 21.17 3,610 12m. ..______28 00 9,480 30.60 16, 800 4...... 20.44 3,370 31.52 21,100 6.------.-. 31.24 19, 600 6._. -__.._ 18.30 2,720 8. 31.36 20, 200 8...... 15.32 1,950 3______32.70 29 4oO 10 - ______31.18 19, 300 12 _.._- 10.82 1,140 4.__. ______32.57 28, 4oO 12_ ------30.85 17, 900 6 ______31.80 22, 700 8 .. 30.90 18, 100 2a.m... __ , 9.45 943 10______29.88 14, 300 28.77 11,300 6...... 8.02 743 12 . .. _ 28.78 11.300 12 m_. .-.-___ 26.55 7,180 TEXAS AND ADJACENT STATES B241

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April K May W Con. June 1 Continued 24. 55 18.00 2,640 6.49 529 g 23.44 4. WO 17.00 2,370 6.55 537 10 23.46 4,570 10 1,330 7.36 650 12. . -- 4 ' 940 9.00 880 11.80 1,300 8.72 841 q 2,330 April %9 9.20 908 11 - 18.48 2,770 13.20 1,540 18. 59 2,810 6,380 e 2,660 26.32 6,900 7 23.60 4,640 16.10 2,140 8 ------7,000 15.00 1,880 10 - 26.14 6,690 26.80 7,490 10 14.56 1,790 12 m... ------25.55 6, 060 10 28.30 10, 100 16.18 2,160 23.94 4,840 11 _ ..... - 29.35 6 ------23.70 4,700 10 29.95 14, 600 23.88 4,810 10_. ------4,940 19.50 3,080 23.95 4,850 4 23.00 4,340 30.15 15,200 25.65 6,160 April SO 3 30.20 15, 400 27.46 8,430 30.12 15, 100 10 28.12 9,740 23.20 4,440 g 29.69 13, 800 11 28.18 9,880 4 ----- 3,850 OS 7H 11, 100 28.17 9,850 8.- 18.45 2.770 27.10 7,880 27.74 8,960 15.20 1.920 8 5,380 26.47 7,080 13.20 1, MO 10 oo an 4,140 10 25.05 5,620 8 ------12.22 1,370 23.40 4,540 12 11.74 May 29 June S May %5 Ifi *V\ 2,2CO 22.58 4,130 12 p.m__ - 5.00 335 Q 19 ^ 1,420 22.82 4,250 1,170 6 23.46 4,570 May 26 9.27 913 7 - 23.56 4,620 8.62 827 8 23.42 4,550 3 a.m. _--_-. 4.9S 332 8 1 fi 7o2 10 22.33 4,030 4...-.- _ ... 5.52 403 12m 20.14 3,270 5 374 May 30 15.12 1,910 6 ____ 5.47 10 A Q 7 5.90 452 7.42 659 1,490 9 7.33 7 nn 10 12.83 1,470 8.40 796 12 - 12.66 8.50 Q1A May SI 8.0 747 4 7.3 649 6.83 576 5 ~ 7.1 625 fi Q^l 590 11.73 1,290 6 7.2 631 g 6.8 573 10.94 1,160 8 - - - 7.6 694 6 9 587 11.62 1,270 10 10.2 6.7 11.64 1,270 12 1,640 554 10.96 1,160 5 6.5 537 11.26 1,210 May W 6 6.6 7 11.01 1,170 17.0 2,380 6.5 531 12 10. & 1,070

165. QUADALTJPE RIVER AT VICTORIA, TEX. Location. Lat 28°47', long 97°01', on left bank just upstream from pier of bridge on U.S. Highway 59 in Victoria, Victoria County, 1,300 ft upstream from Texas and New Orleans Railroad bridge, 10 miles upstream from Coleto Creek, and at mile 51. Drainage area. 5,161 sq mi. Gage-height record. Water-stage recorder graph except 1:20 a.m. May 5 to 5 p.m. May 9, 9 a.m. to 2 p.m. May 15, for which a graph was reconstructed on basis of wire-weight gage readings made once daily and recorded range in stage. Datum of gage is 29.15 ft above mean sea level datum of 1929, Houston supplementary adjustment of 1943. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. B242 FLOODS OF 1957

Maxima. April-June 1957: Discharge, 35,300 cfs 10 p.m. May 2 (gage height, 29.92ft). 1934 to March 1957: Discharge^ 179,000 cfs July 3, 1936 (gage height, 31.22ft). Maximum stage since establishment of U.S. Weather Bureau gage in 1904, that of July 3, 1936.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

2,860 22, 800 15, 300 11 . 320 2,380 3,540 21 3,620 2.080 1,630 2 3.620 30, 800 20, 200 12 . 407 1,810 2,900 22 7,080 2,010 1,600 3_ 3.910 30, 400 17, 000 13 - 334 1,770 2,520 23 8,840 2,150 1,580 4 2.290 22, 000 10. 800 14. 349 4.210 2,340 24 7,060 1,850 1,330 5 1,110 10, 800 10, 600 15 - 372 4,650 2.240 25 6,980 1,630 1,450 6 797 3,960 12, 300 16 . 349 5, 380 2,240 26 7,900 1.530 1,390 7 580 3 040 12, 900 17. 956 4.650 2,240 27_____ 9.010 1, 570 1,380 8_ . 539 2,630 11, 400 18 . 2,830 4,520 2,030 28 13, 500 3,070 1,190 9_ 516 2,500 6,670 19 . 2,380 5.760 1,830 29 16, 200 7,750 1,110 10 364 3,480 4,610 20 1,440 2,780 1,920 30 17,900 9,910 1,130 31.- 11, 700

Monthly mean c ischarge, in cubic feet per 4,147 6.954 5,312 Runoff, in acre-ft36t 246, 800 427, 600 316 100

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April SO April &5 April 29 Con. 12 p.m...... 6.40 1,200 6,410 12m... .. 26.77 16, 000 6 17.18 6,530 26.48 15, 500 April 21 6,890 12 26.52 15,500 18.38 7,370 1 a.m...... 6.42 1,210 19.07 7,850 April 30 2 ...... 6.69 1,300 4...... _ --.. 6.89 1,370 16, 000 5 ...... 7.14 12 ni-...... 27.50 17, 800 6 19.36 28.08 19,200 7---_-.--- _ 8.85 8 12 , _... 28.52 20, 600 8 . 10.50 2,710 8,030 9 11.85 3,330 18.87 8,010 May 1 10.. ___ 12.85 3,870 12 -.. 7,600 11 13.70 4,340 12m-...... 29.08 22, 300 12m...... 14.25 A riril #7 9p.m...... 29.47 25, 100 14.84 12 29.55 26, 300 4 - 14.96 5,080 18.68 7,580 8 14.70 4.920 4 ...... 18.83 7,680 May & 10- ... 14.70 4,920 6 19.10 7,870 12...... 14.84 9 _ 8,320 8 a.m.---. 29.73 29, 800 12111-. 29.73 29, 800 9,930 2p.m...... 29.75 30, 400 8 22.15 6.. .. 29.86 33, 400 15.65 9*> 97 10, 370 8 29.90 34, 600 16.90 fi,330 10 29.92 35, 300 10 10 7,230 12. . 29.90 34, 600 19.23 7,960 8 ... 20.01 8,510 22.35 10,400 12 20.49 6 23.05 11,100 3 a.m...-. ... 29.90 34, 600 8 11,400 6 -- ... 29.86 33, 400 April SS 10 12, 200 12m___ 29.75 30, 400 12 in. 25.15 13, 200 12p.m...... 29.47 25, 100 20.75 14. 500 May 4 7 20.81 9,150 4 26.52 15, 500 12 in--...... 20.68 9,040 16,200 6 a.m.--.. ... 29.25 23, 200 20.40 8,820 27.08 16. 700 12m__. _..-_. 28.96 21, 900 12 19.36 8,050 27.17 16, 900 6 p.m.-...... 28.58 20, 700 9_-_ --- 28.30 19, 900 April 24 12 . 27.87 18, 700 18.52 7,460 12m-.. .. 17.80 6,960 27.18 17, 000 17.27 6,590 27.15 16, 900 6 a.m. ... 26.25 15,000 12...... 17.02 6.410 8- . 27.00 16. 500 9_...... 24.50 12, 500 TEXAS AND ADJACENT STATES B243

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May 5 Con. May 17 Con. May 28 Con. 12m_. ... _ . 22.25 10, 400 12m...... 14.37 4,650 19.70 8,300 13,61 6-----.----.-. 17.10 6, 470 ' 12-.----....- 12.69 3,780 9 ...... 12...... 14.70 4,920 May 18 17.25 6,580 8 18.95 7,760 May 1% 11 a.m____ .... 10.94 2,870 12m,--. ._ ... 19.58 8,210 12m...... 11.53 3,160 20.22 8,680 12 p.m...... 7.57 1,500 1 p.m...... 11.67 3,240 12 20.77 9,110 2 __._ - 12.00 3,400 May IS 4-...-.-.-.... 13.80 6 16.15 5,800 2 a.m..--,. ... 7.55 1,490 8 - 18.15 7,210 21.31 9,550 6. . - . 7.70 1,540 10 .. 19.20 7,940 21.73 9,890 12m.--....-. 8.25 1,750 12 . 19.59 22.67 10, 700 8.60 1,890 8 . . . 8.86 1,990 10...... 9.11 2,090 12...... _ 9.73 2,340 19.66 8,260 12m.-. ------23.58 11, 600 2 . 19.60 8,220 12p.m__ 24.77 12, 800 May 14 4...... 19.15 7,900 6...... - 18.35 7,340 12.75 3,810 12 in...... 9...... 13.75 4,360 13.40 4,170 26.31 15, 100 12 in. ._.....- 4,670 Q 3 7QA 27.66 18, 200 2 p.m...... 14.45 4,770 12- . 11.98 3,300 4 -__-_- 14.50 4,800 6 .. ----- 14.48 4,790 9 -.- . 14.33 4 690 28.48 20, 400 12...... 14.11 4,570 7.52 12m.... _ -- 28.61 20, 800 28.64 20, 900 May 27 9 ... - 28.53 20, 600 28.42 20,300 13.86 7.80 1,580 13. 80 6 ,...... 7.75 1,560 12m.-..-..-- 14.03 11 7.28 1,400 15.08 12m-... 7.50 1,480 28.07 19, 200 27.40 17,500 May 16 6...... 7.77 1,570 6p.m. _ - ... 26.15 14, 800 9 8.13 1,700 12 .. 24.52 12, 500 6a.m..,. .... 15.43 5,360 12 8.88 2,000 12m. ._...-.. 15.63 5,480 15.65 5,490 May 28 6...... 15.60 23.07 11, 100 12...... 15.33 5,300 9.88 2,400 12m.. 22.24 10, 300 11.00 2,900 21.98 10, 010 May 17 12. 33 3,580 8 -- - 22.01 10, 100 14.92 10. . 13.33 4,130 12 22.10 10, 200

166. SAN ANTONIO RIVER AT SAN ANTONIO, TEX.

Location. Lat 29°24'35", long 98°29'40", 011 right bank at downstream side of South Alamo Street Bridge in San Antonio, Bexar County, 2.1 miles upstream from Sail Pedro Creek. Drainage area. Approximately 42 sq mi. Normal flow of river formerly came from springs; drainage area of stream not applicable. Gage-height record. Water-stage recorder graph. Datum of gage is 612.26 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation denned by current-meter measure­ ments below 580 cfs and extended above. Maxima. April-June 1957: Discharge, 1,850 cfs 1 p.m. May 27 (gage height, 9.23 ft). 1915-29, 1939 to March 1957: Discharge, 15,300 cfs Sept. 10, 1921 (gage height, 20.14 ft, from floodmark), from rating curve extended above 2,000 cfs by slope-area measurement of peak flow. B244 FLOODS OF 1957

Maximum stage known since at least 1819, that of Sept. 10, 1921; flood of July 5, 1819, equaled or exceeded that of Sept. 10, 1921. Remarks. Flood flow partly regulated by Olmos flood-control reservoir (capac­ ity, 15,500 acre-ft) about 8}£ miles upstream. Dam completed in 1926. Normal flow of river formerly came from springs located 8 miles upstream but now comes largely from artesian wells. Springs emerged from Edwards limestone in Balcones fault zone.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 ... 35 15 247 11. .... 6.4 12 9.7 21..... 22 14 11 2. ___ . 11 16 394 12..... 6.2 9.3 18 22 .... 12 12 10 3_ 12 16 32 1 1 6.2 124 10 93 16 11 9.3 4... __ 14 19 28 14 4.4 24 10 24 223 15 7.4 5 _ ._ 4.6 12 83 15 __ . 25 14 9.7 25 277 15 8.2 6 . 7.2 13 45 16 23 12 9.3 440 24 10 7 . 5.2 12 16 17 7.4 14 9.7 27 488 376 9.7 8 . 7.4 12 32 18 _ - 7.1 142 24 262 611 11 6.8 15 14 19 380 167 12 29- 378 293 10 10...... 5.6 13 12 20 47 23 11 30 . 58 19 9.3 31 211

Monthly mean d iseharge, in cubic feet per econd 93.2 73.7 37.4 Runoff, in aere-fc et 5,550 4,530 2,230

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 18 April 25 April 28 12 p.m...... 0.96 5.8 2.24 107 1.91 71 4 ...... 2.03 83 8 1.66 49 April 19 10 1.93 73 1.53 39 11 . 5.41 622 2 ___ 6.00 765 .95 5.6 12m. .. .. 778 3...... 7.01 1,060 2:30. 5.52 6.07 6 --- ... 3.91 358 5. .. __ .- 4.40 441 3 645 7:30. 3.01 214 499 6 361 9 3.83 345 8:30 --. 4.21 409 9 2.31 115 10 3.93 361 9... _ ...... KK7 12 1.74 12...... _ ... 3.93 361 12m._ ... 3.63 313 2:30p.m___ ... 2.66 160 April 26 April 29 5 .. ___ .... 5.60 10 2.95 3.11 230 3.81 342 12 _ ...... 2.17 99 2. __ ...... 4.04 380 11...... 3.84 346 4 _ 3.53 297 2p.m...... 3.76 334 6 ...... 149 4...... 5.26 593 7.. . . 2.31 115 5 5.23 587 2a.m _ ...... 1.85 66 9. ... 2.10 9] 5:30-. - 5.53 648 5 ...... 1.69 51 10 .. 378 8 ...... 4.28 421 9 1.63 46 11 _ .. .. 648 10. 3.18 241 10 1.71 53 587 12... _ 2.47 135 12m... 5.03 551 5 4.98 542 April 30 April 23 6- ...... 4.78 506 9:30.. ___ -_- 4.55 466 3 a.m. __.._.. 2.00 80 1.12 12 11 7 00 1,060 12m. . __ . 1.70 52 12 7.68 1,280 12p.m...... 1.35 26 April 84 April 27 May 12 1.05 9.7 5.78 710 11 1.18 16 4 ..... 4.43 446 12p.m...... 97 8.9 12m ___ _ ... 1.30 23 6 3.90 356 3 p.m...... 1.08 11 9 3.78 337 May n 6 ...... 1.15 14 11 5.18 7- ...... 7.97 1,380 12m.... . 5.25 591 7 a.m...... 95 8.2 8 8.83 1,690 560 S...... 4.65 484 9 ...... 7.16 4 10 3.89 354 10 4.93 533 560 12m.... 2.68 163 11 306 3 49 2.34 119 12 . 2.85 188 12.. ... _ 2.60 152 3...... 2.53 143 TEXAS AND ADJACENT STATES B245

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May IS Con. May 20 Con. May 29 Con. 2.46 134 1.24 20 1.32 24 12...... 1.65 48 8_ 1.11 15 11 1.07 13 12 m...... 1.08 1.13 16 12 m...... 1.19 18 1.43 32 10 1.17 1 Q 10 1.26 21 12- 1.11 May 31 1.23 20 12 1.06 12 1.06 19 7:30...... 1.05 12 May 17 1.15 16 1.67 50 9...... 441 12 m...... 1.16 18 ii.: . ... 3.03 217 12m..... _ . 2.44 131 1.09 14 2.19 101 10 1.20 19 2...... 2.17 99 .99 11 3.25 252 4...... 1.99 79 1.05 10 12m...... 8.25 1,480 5 ...... 3.84 346 g 3 <-te: OOQ 1 p.m ..... 9.23 1,850 6 4.68 489 10 5.23 2 ...... 8.20 1,460 6:30... 4.73 497 11 . 4 95 rO7 3. ... . 6.60 940 8...... 4.70 492 4^23 412 4..-...... 5.60 665 10. 4.58 472 7 3.77 335 12 4.30 424 2 3 24 OCfi 8 - 3.12 231 4...... 2.41 9...... 2.78 178 June 1 6 .... 2 14 QC 11... .. 2.45 132 g 1.84 12...... 3.83 345 2 a.m...... 3.76 334 12 1 "7Q 55 5 ...... 2.67 162 7...... 2.14 95 5.25 591 10. . 1.70 52 2 .. . 5.52 645 12m...... 1.61 45 3... . 5.55 1.51 38 10 a.m.___ .... 1.68 50 12m... _ ... 5.38 616 4--.-----.-... 4.10 390 11 3.78 337 5.26 593 6.-.- 4.85 519 12m...... 4.50 458 6_ 5.40 620 8...... 3.07 223 12:30 p.m_.___ 4.53 463 12...... K7K 10 4.90 528 2 ...... 4.40 441 12 E7Q 3 4.15 398 May 29 5 ...... 2.99 210 June 2 6...... 2.69 165 4 60 475 5 19 rori 11 2.20 102 10 A 97 419 Q 4.84 517 12.. 2.05 86 12m __ 010 4 64 482 2.78 178 4.19 405 May 20 5 .. 2.00 80 3.14 234 7 1.65 48 2.39 125 1.47 35 9 ...... 1.46 34 12 _ - _ -. 1.69 51

167. MEDINA RIVER NEAR PIPECREEK, TEX. Location. Lat 29°40', long 98°59', on left bank 600 ft upstream from Bandera Falls, 0.8 mile upstream from Red Bluff Creek, and 4 miles southwest of town of Pipeereek, Bandera County. Drainage area. 457 sq mi. Gage-height record Water-stage recorder graph except Apr. 1, 2, Apr. 29 to May 15, May 24 to June 18, June 21-30. Fragmentary record and floodmark used as basis to reconstruct graph Apr. 24-28. Datum of gage is 1,067.37 ft above mean sea level, unadjusted. Discharge record. Stage-discharge relation defined by current-meter measure­ ments below 1,900 cfs and by slope-area measurement at 11,800 cfs. Discharge for periods with no record of gage height estimated on basis of records of weather and records for Red Bluff Creek near Pipe Creek. Maxima. April-June 1957: Discharge, 26,000 cfs at 3 p.m. Apr. 24 (gage height, 23.0 ft, from floodmark). B246 FLOODS OF 1957

1922-34, 1953 to March 1957: Discharge, 64,000 cfs July 1, 1932 (gage height, 33.8 ft, from floodmarks, at site 2 miles upstream at different datum), by slope-area measurement of peak flow. Maximum stage since at least 1880, about 43 ft in 1919; information from local resident. Mean discharge, in cubic feet per second, 1957 I Day April May June Day April May June Day April May June

53 81 5,510 16 39 129 21 38 88 124 2. ------26 77 793 12 17 38 129 22 _ 1,760 79 116 3 169 69 273 13 15 413 127 23 149 73 114 4. 30 63 67 14 . 15 238 127 24 7,710 63 106 5 22 57 294 16 352 127 25 1,220 63 102 6 19 53 369 16 19 92 124 26 1.500 1,630 99 7 17 48 154 17 19 81 124 27. 2,860 2,730 94 8___ 17 44 145 18 17 433 122 28 .. 1,450 2,440 92 9 16 43 137 19 1,030 137 122 29 _ 445 237 88 10- 15 41 132 20..-- 76 94 137 30 119 99 84 31 360

Month'v mean d ischarge, in cubic feet per 629 334 339 Runoff, in acre-f 37,440 20,540 20, 150

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gaee Discharge height height height

April 18 April 24 Con. May 26 Con. 12p.m...... 3.96 16 14.00 9,200 13. 00 7,750 12 11 9.50 3,500 12m.. ______8.20 2,280 2a.m.....---- 3.96 7.00 1,330 3.-..'...... 4.75 188 7.10 1,400 5 ______6.06 756 4. 6.10 7ft fi 12__ ... 5.52 478 4:30....-. 8.50 2,550 May 27 5 ______9.90 S Qflf. 6:30.. .-___-._ 11.20 April 26 12m. ..__--__ 5.00 260 8______8.75 2 7QA 1,330 6.40 960 9___ .______. 7.00 1,330 2. ___ _ _ 4,400 6______9.90 3,900 12m.. ______5.55 496 3. ______12.95 7,680 8 ___ .__ 15.04 10, 900 12p.m... . 4.58 137 5 _ 9.50 3,500 10 -..-___ 13.68 8,740 12 15.90 12,400 12m. .._____. 5.67 551 May 28 12p.m.-_ _ 4.08 39 306 12 ______7.00 1,330 16.23 13,000 2 13.50 8,480 4.09 33 4 _ __-___ 1C. 27 4,310 3. 4.70 6 ______8.00 2,100 3:30.. .._.____ 7.50 1,700 3. 8,840 12m. . _ 6.14 804 4. 11.00 10.70 4 onn 5.33 394 5______14.45 9,920 6,600 7. 12.20 9 30 8 ______8.90 10 7 90 12 p.m...-- . 4.38 79 10 ______6.66 1,120 12m. ..______6 on 12m... _____ 6.15 810 570 5.27 374 10a.m. 4.40 84 12 _ 4.76 191 April 28 12m...--.-. 7.00 1,330 K f\Q 5.70 565 7.00 1, 330 12 ._.____. 4.90 227 6 a.m __ ___- 4.55 129 4 ._-___.___ 10.75 4,860 12m. ..______4.47 109 5. ___ _ 2-p.m.. _ ___ 4.43 99 8 8.40 2,460 4.90 227 4 4.90 237 12 _____ 9:30.. -___ _ 7.00 1, 330 8 - - 4.63 151 10 ______12.00 6,400 10... ______4.63 151 10:30. _.__ _ 17.00 14, 400 12 ___ 4.57 135 11. ______21.70 23, 400 12m_. .__ _ 5.20 338 12 m. .._--- 20.90 21, 800 4.75 178 2:30 p.m...-. 17.00 14, 400 10a.m. ____ 4.45 104 3______12.00 6,400 10:30.. ______10.60 4,690 May 25 6__ 9.10 3,100 11 15.50 11, 700 4 30 63 12 7.25 1,510 12m. .._.___ 19.17 18.24 16, 600 May 26 June 2 3 23.00' 26, 000 4.40 84 12m... ______5.85 640 6 .... . 17.00 14,400 7 ____ 9.20 5.30 382 TEXAS AND ADJACENT STATES B247

168. MEDINA LAKE NEAR SAN ANTONIO, TEX. Location. Lat 29°32', long 98°56', at gage operating platform 576 ft from left end of Medina Dam on Medina River, 4 miles upstream from Medina Diversion Dam, 13 miles north of Castroville, and about 28 miles west of San Antonio, Bexar County. Drainage area. 609 sq mi. Gage-height record. Wire-weight gage read intermittently. Datum of gage is 7.5 ft below mean sea level (levels by U.S. Army Corps of Engineers). Maxima. April-June 1957: Contents observed, 105,100 acre-ft June 26 (gage height, 1,036.7 ft). 1913 to March 1957: Contents observed, 288,800 acre-ft Sept. 16, 1919 (gage height, 1,078.0ft). Remarks. Lake formed by gravity-type concrete dam. Dam completed and storage began May 7, 1913. Spillway section is located near right end of dam and is of natural rock; it is 880 ft long with a cutoff wall, 3 ft wide. Total capacity, 254,000 acre-ft (gage height, 1,072.0 ft, top of spillway section). Gage height, in feet, and content*,, in acre-feet, on indicated day, 1957

Ap ril M ay June Day Gage height Contents Gage height Contents Gage height Contents

1 1, 013. 4 50. 540 1, 030. 4 87, 010 2 ------_-- _ - 982.4 13, 880 1, 033. 1 94, 740 3 ------982.5 13, 940 1.033.5 95, 890 4 --- -_ 1,013.8 1, 034. 3 98,180 5___ . ------6 - 983.0 14, 290 1, 034. 8 99,620 7 _ _ 8.. . 51, 810 1, 035. 4 101, 300 9.. ------1,035.7 102, 200 10 ------11 1. 014. 4 52, 360 1, 035. 9 102,800 12 - - _ 13 QCQ rt 14, 290 1, 014. 4 1, 036. 1 103,300 14 15 1. 036. 2 103, 600 16 1, 016. 4 56, 010 17. . 18.. 1, 016. 6 56, 380 19 1, 017. 2 57, 470 1, 036. 3 103, 900 20 ------16,640 21 QQ7 f\ 17 f\f\f\ 1, 017. 4 C7 QAf\ 22... _ - -_- - 1, 036. 4 104, 200 23 20, 440 1. 017. 6 24 25, 290 25 1, 003. 2 34, 680 58. 200 26 1,006.3 QQ no A 1, 018. 4 1, 036. 7 105,100 27 I flflQ ft 44 ' 050 60 940 28 1, 026. 7 78,180 29 AQ ftSfl 79, 810 1, 036. 6 104. 800 30 - . 49,800 104,800 Q1 1. 027. 2 79. 340 Change in contents, acre-feet ------+36,480 +29, 540 +25,460

169. MEDINA RIVER NEAR SAN ANTONIO, TEX. Location. Lat 29° 15'', long 98°28', near left bank on downstream side of pier of bridge on U.S. Highway 281, 5.2 miles upstream from mouth and 9 miles south of San Antonio, Bexar County. Drainage area. 1,225 sq mi, of which 587 sq mi is above dam forming Medina Lake. B248 FLOODS OF 1957

Gage-height record. Water-stage recorder graph. Datum of gage is 439.0 ft above mean sea level (levels by U.S. Army Corps of Engineers). Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 5,180 cfs 12 m. Apr. 29 (gage height, 22.83ft). 1939 to March 1957: Discharge, 31,800 cfs Aug. 29, 1946; gage height, 41.57 ft Sept. 27, 1946 (backwater from San Antonio River). Maximum stage known, about 55 ft sometime before construction of Medina Dam in 1913; information from State Highway Department. Remarks. Flow slightly regulated by Medina Lake, 60 miles upstream, and diversion dam reservoir (capacity, 4,500 acre-ft). The city of San Antonio discharged approximately 6,910 acre-ft of sewage effluent from Mitchell Lake into the river above the gage during the period.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 60 506 1,370 10 103 120 21 643 222 59 2 22 260 2,740 12 11 59 105 22 181 86 57 3 17 141 1,320 13 10 100 97 23 48 63 51 4_ . 17 106 550 14 - 10 122 90 24 113 48 48 5 . 13 86 103 15 10 77 88 25 1.240 41 46 6_ 12 74 326 16..... 14 54 80 26 948 34 43 7 12 68 247 17 14 65 74 27 3,480 413 41 8. 10 67 234 18 12 217 71 28 2,500 2.210 39 9...... 10 60 154 753 1,460 73 29 3,710 1,380 37 10 10 63 142 20 ~ 1.540 590 66 30 1,290 487 33 31 517

Monthly mean d ischarge, in cubic feet per 557 315 283 Runoff, in acre-fe et 33. 160 19, 400 16, 870

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1951

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 18 April gg Coii. April 26 Con. 12p.m__..--_ 1.83 11 3.41 92 12 m-.. 8.61 563 2.88 61 12. 16 1,120 April 19 12 --- - 16.66 2,210 April 23 2a.m __ . ... 1.95 16 AprU 27 5. .. _ _ 2.82 58 2.46 38 7 ----- 3.45 94 20.37 3,740 8..--...... 6.77 342 April 24 21.18 4,160 10.. 9.07 558 12 20.74 3,920 12m...-- . 10.97 776 2.46 38 13.87 3.51 98 12 16.29 1,720 3.74 112 7. 3.29 84 18.13 2,720 April HO 9---__--- 4.96 197 12m. ..-. 14.95 1,730 10 _ 329 14.12 1,520 7 a.m __ _- _ 17. '76 2, 130 12-- .-... 9.46 601 9. ... __ 18.44 2,850 12 m-. ,-- - 16.24 1,710 17.85 2,610 4 p.m. .__ - 13.80 1,220 April 25 9. 11.32 825 13.31 1, 350 April 29 12. _ 12.89 1,060 7 _.- .. _ 14.63 1,650 8 - .-. 14.59 1.640 \ a.m....-- . 17.77 2,580 April 21 9 - 1,710 7__ ... 20.00 3, 550 12m.....-- 14.20 1,540 12m.. ------22.83 5,180 12 m__ _ - 9.19 571 904 19.35 3,220 12p.m.-. _ 7.10 369 12 9.89 734 12 -..- 17.40 2,430 April 22 April 26 April SO 8 a.m __ _,-- 6.31 305 9 26 645 9-. 5.26 221 6 .--.... .-- 9.32 653 6 a.m __ ---. 14.05 1,500 TEXAS AND ADJACENT STATES B249

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 30-Con. May 19 May 89 Con. 12m...... 1,160 12.61 1,210 11.75 1,040 9.75 714 10 15.81 1,950 12 9.30 650 12m...-.---- 15.49 1,860 12.49 1,190 May SO 7.73 468 12 m 7.82 477 6.77 372 7.52 447 9.31 640 7 . 7.30 425 12m..--.. 8.00 482 12 6.05 300 12 p.m.... 6.64 342 12m...... 6.09 287 May 31 2p.m __ . _ 5. 95 276 May 21 4 SO 5.72 270 5.81 250 10 7.45 440 5.66 237 11 7.30 425 5...... 4.23 129 2 p.m_-_. 7.64 459 2.80 55 4__ . 7.42 437 May 86 7 10.00 751 May 13 12 12.60 1,210 12 p.m... 2,61 32 2.75 52 12m...---.-. 3.14 75 May 87 3.45 94 13.87 1,460 4. ------3.42 92 10a.m... __ . 2.59 30 12 m...... 12.94 1,280 9...... 5.21 217 12m.....- 3.83 102 11.70 1,040 12_ .- - 4.60 172 5.50 232 12 15.55 1,880 2.-.. ----- 7.90 472 May 14 6_ . 11.42 980 9. . ----- 11.25 948 4.93 195 12 .. 12.30 1,150 18.77 2,980 12m._. 3.42 92 12 m ... 19.05 3,090 3.19 78 May %8 18.94 3,050 9..-...... - 3.51 98 6 . 19.00 3,070 12 3.51 98 14.60 1,640 12-- - 16.70 2,220 12 m... ------18.40 2,830 May 17 19.37 1 Od(\ 12 16.17 2,060 12p.m...... 3.29 84 12 m 12.36 1,160 10.00 751 May 18 May 89 3.07 71 12m...... 4.42 159 3 a.m.. -....-. 15.50 1,860 7.05 364 7.. - 15.32 1,820 Q 1 C CIO 7 6.69 335 12 m- .... 13.80 1,450 7.32 497

170. SAN ANTONIO RIVER NEAR FALLS CITY, TEX. Location. Lat 28°57'05", long 98°03'55", on left bank 23 ft downstream from bridge on Farm-to-Market Highway 791, 0.9 mile upstream from Scared Dog Creek, and 3.6 miles southwest of Falls City, Karnes County. Drainage area. 2,071 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 285.49 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 6,920 cfs 9 a.m. Apr. 27 (gage height, 10.53ft). 1925 to March 1957: Discharge, 47,400 cfs Sept. 29, 1946 (gage height, 33.80 ft, from floodmark). Maximum stage known since at least 1875, that of Sept. 29, 1946; information from local residents. Remarks. Flow slightly regulated by Medina Lake (see p. 247) and Olmos flood-control reservoir (combined capacity, 269,500 acre-ft). Storage began in Medina Reservoir in 1913, and Olmos Dam was completed in 1926. The 656087 O 62 17 B250 FLOODS OF 1957

city of San Antonio discharged an average of 70 cfs of sewage effluent into the San Antonio River about 8 miles below the station at San Antonio. See Medina River near San Antonio for additional information relative to sewage effluent. Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 . 675 6,490 3,420 11 118 798 413 21 3,570 1,520 260 2- 530 4,480 3,520 12--... 104 339 371 22 2,620 954 229 3- ... 402 1,780 3,700 13 96 426 339 23 2,080 416 210 4.-.- _ 232 580 4,430 14 93 532 311 24 588 295 240 172 429 3,720 15 .. 104 508 295 25.---- 742 263 187 6 ... 146 355 1,690 16 100 417 287 26 1,250 240 154 7 ... . 128 319 1,120 17 139 267 271 27 4,790 538 121 8. ... 110 295 914 18 180 537 252 28 4,250 1,270 118 107 283 645 19-... 1,130 690 240 29 5,900 2,290 114 10 114 1,400 498 20- 1,960 1,080 248 SC­ 6,560 5,640 110 SI 5,230

Monthly mean c ischarge, in cubic feet per .. 1,300 1,312 948 Kunoff, in acre-fc;et 77, 340 80, 650 56, 380

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 18 April 25 Con. May Z 165 2.28 611 7.10 4 480 2.12 539 5.29 3,030 April 19 2.21 580 May S 1.21 5 1.59 303 12m ------3.78 1,670 7 2.08 508 3.22 1,180 12p.m. _... 2.57 758 2,070 3.44 1,340 May 9 3.40 1,310 April 87 3.87 1.49 275 12. 4.20 4,360 9. _ . _ .... 10.53 6,920 May 10 April 20 12m- 9.16 5,960 7.53 4,800 1.98 476 12m--- . 3.95 1,830 6 6.88 4,300 8 - 3.29 1,230 10 p.m_- ..... 3.92 1,800 12 6.45 3,960 3.98 1,860 19 3,030 4.20 2,080 19 3.70 1,600 April 21 12m. . 5.97 3, 580 May 11 4:30 a.m ...... 10.04 6,580 6.06 3,650 12m--_-- -- 4.62 2,480 10 9.37 6,110 3.05 1,050 4.44 2,310 8.73 5,660 12m.. . 2.42 680 12 4.62 2 ' 480 1.97 472 12 1.75 380 April $8 7.80 5,000 May IS 12m--. .. 4.81 2,640 6...... - 7.88 5,060 5,950 12m.-- 1.62 327 April S3 10.00 6,550 12 10.16 6,660 May IS 4.67 12m--- 4 QO 2,200 1.55 299 3.83 1,720 1.75 380 12 3.18 6,590 1.83 413 12m 9.87 6,460 1.80 400 April 84 9.83 6,430 5.. ------2.18 566 6 ...... 10.00 6,550 8 2.12 539 2.43 12 10.19 6,680 12 2.30 620 1 91 446 1.67

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May 17 May 27 June 1 12m___- __ 1.46 263 1.36 OOK 1 0(1 a eon V)...... 1.41 244 12m..---- ... 5.37 3,100 May 18 12m...... 1.57 307 5.19 2,950 2.18 566 5.73 3,380 9 a.m.. _ -. 1.36 225 5 ...... 2.87 932 11 6.90 4,320 12nu_--__ ___ 2.04 503 8 ...... 3.15 1,120 12 6.75 4,200 1 p.m...... 2.02 494 19 814 3_ 2.66 808 7...... 3.00 1,020 12...... 2.45 695 5.74 3,390 3.35 1,280 6...... 5.47 3,180 May 19 12m-. _ 3.51 1,420 9 - ...... 5.61 3,290 3.38 1,310 5.82 3,460 2.44 690 6.04 3,630 6 p.m...... 2.35 645 May 29 8...... 6.11 3,690 12 6.04 3,630 May gO 3.89 1,780 12m-- 4.32 2,200 12m..-.. . 3.13 1,110 4.83 2,660 1 9 6.04 3,630 6.14 3,710 May 21 May 30 June 4 3.63 1,530 12m-.-...... 3.68 1,580 7.80 5,000 6.65 4,120 3.64 1,540 12m.. 9.30 6,060 12m...... 7.13 4,500 12 3.48 1,400 9.77 6,390 7.50 4,780 8 ..... 9.91 6,490 S...... 7.52 4,790 May Si 12 9.74 6,370 12 7.40 4,700 3.20 1,160 12m- 2.86 926 12 p.m...... 2.18 566 7.08 4,460 9.30 6,060 8 ...... 6.65 4,120 8 . 8.60 5,570 12m-. 6.17 3,740 1.96 468 10...... 8.67 5,620 4.77 2,610 1.81 404 5,440 1.68 351 7.23 4,570 12-.. 1.60 319 12 6 99 3,780

171. CZBOLO CREEK AT SELMA, TEX. Location. Lat 29°35'35", long 98°18'40", on right bank 0.6 mile downstream from Missouri-Kansas-Texas Railroad bridge and 0.8 mile upstream from bridge on U.S. Highway 81 at Selma, Bexar County. Drainage area. 280 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 728.34 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation denned by current-meter measure­ ments below 7,000 cfs and by slope-area measurement at 36,400 cfs. Maxima. April-June 1957: Discharge, 16,900 cfs 7:30 p.m. May 27 (gage height, 14.48 ft, from floodmark). 1946 to March 1957: Discharge, 36,400 cfs Sept. 11, 1952 (gage height, 19.37ft). Maximum stage known since at least 1869, about 26 ft in 1889. Flood of 1913 was probably about 2 ft lower; information from local residents. Remarks. Much of the surface flow enters faults, sinkholes, and caverns in limestone formations upstream from this station. B252 FLOODS OF 1957

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1... __ 0 77 373 11 0 0.4 17 21 0 0 0 2. ... 0 30 2,660 12..... 0 .3 8.8 22 1,560 0 0 3.. .. 0 11 408 13 0 1.3 4.5 23 329 0 0 4 0 3.8 248 14..... 0 .7 2.4 24 310 0 0 5 0 2.0 169 15 0 .1 1.4 25 694 0 0 6_ 0 1.5 124 16 0 0 .8 26 366 0 0 7 0 1.3 88 17 0 0 .5 27. .... 1,790 5,120 0 8. ... 0 1.0 63 18..... 0 0 .3 28 501 2,910 0 9 0 .8 44 19 31 0 0 29 617 408 0 10 0 .6 29 20 0 0 0 30 320 206 0 31 135

Monthly mean c ischarge, in cubic feet per i 217 287 141 Kunoff, in acre-fc et 12,930 17, 670 8,410

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 195"i

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 21 April $7 May 27 Con. 12 p.m... _ . 0 5.94 1,340 9.35 5,320 3 5.80 1,210 2_ . 11.38 8,940 April 22 5.80 1,210 3. 10.50 7,200 6- 5.60 1,040 4:30-...--..-. 8.51 4.160 10a.m..- 0 5.90 1,300 5.--. .-__.-- 9.10 4,950 11 ...... 6.92 2,320 7.05 2,460 6. 12.38 11,200 12m...... 7.87 3,380 n.ofi 7.85 3,360 7. 14.32 16,400 2p.m. ...-.-- 8.38 4,000 12m. . 7.22 2,650 7:30.... 14.48 16,900 4:30. _ ...... 7.54 3,000 6.90 2.300 9 ------14.10 15, 700 6.. ------7.81 3,310 4. . 6.77 2,170 10 13.48 14,000 9 -. ... 6.57 1,970 5.95 1,350 12 11.92 10, 100 12 5.65 1,080 12. 5.32 801 May 28 April 23 April 28 9.65 5,780 4 a.m.. _ ..- 4.95 542 4 68 389 6_ 8.40 4,020 8. - 4.56 335 4.35 254 8 ------7.30 2,740 12m.. .---_. 4.27 227 4.28 230 12m... 6.32 1,720 4.07 166 Q 419 5.69 1,110 12 .3.70 80 4:30... 5.15 675 12. 5.10 640 6 . 4.85 480 April H 9 5.10 640 May 29 12 --. 5.48 933 3.51 52 12 m.. .-..-- 4.o3 366 12m _ -_.-- 3.37 37 April 29 4.37 262 5:30 p.m...-. 3.25 26 6______- - 4.30 237 916 May 30 7. 6.05 1,450 4.90 510 8 6.57 1,970 6..- ___ __. 4.70 398 12m...- _. 4.19 201 10 5.35 825 g 4.64 370 4.04 158 12. - 4.61 357 10. . 4.95 542 12 m.. .. --- 5.72 1,140 April 25 4.93 530 May 31 12 4.52 318 i 5^n 3.96 137 1:30... 6.32 1,720 April 30 9 4.C1 150 6. 5.38 849 12m _ ---___ 3.97 140 12m..._- - 5.12 654 4.36 258 12 p.m __ -. 3.83 107 6 p.m.. ...--- 4.56 335 4.95 542 12.. 4.20 204 6 ...... 5.23 732 April 28 9 4.84 474 June 1 12m.. _---. 4.51 314 1 a.m...... 4.71 403 4 30 237 3.82 104 2-.--...... 5.25 748 4 08 169 4 ...... 4.05 160 3.5 .. 5.75 1,160 19 3 93 130 5 ..... 4.91 516 AK(\ 6. 5.00 575 9 ...... 4.23 214 4.57 339 12m... 4.06 163 4.43 283 2 p.m ___ _. 4.03 155 0 4 ...... 4.66 380 4.08 169 5 4.86 486 8. . 4.17 May 27 6. 4.82 462 10.. . 4 68 OQQ 4.47 299 11 5.25 748 0 11.. 4.41 276 12...... 5.80 1,210 12m _ ----- 495 542 12 6.30 1.700 TEXAS AND ADJACENT STATES B253

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

.June ? June % Con. June 3 Con. 7.10 2,520 5.64 1,070 12 4.50 310 3_ 8.45 4,080 8. ... - 5.26 755 4__- _ 10.50 7,200 12 - 5.06 614 June 4 5_ 11.29 8,740 12m-. 4.31 240 6. 10.55 7,290 4.30 237 8. . 8.60 4.280 4.81 456 2_ . 4.39 268 10 7.10 2,520 4.62 361 3. . 4.28 230 12m.- 6.36 1,760 4.60 352 12 4.17 19ft

172. CIBOLO CREEK NEAR FALLS CITY, TEX. Location. Lat 29°01', long 97°56', on right bank at downstream side of pier of bridge on State Highway 123, 5.5 miles northeast of Falls City, Karnes County, and 9 miles upstream from mouth. Drainage area. 831 sq. mi. Gage-height record. Water-stage recorder graph. Datum of gage is 264.28 ft above sea level datum of 1929, Houston supplementary adjustment of 1943. Discharge record. Stage-discharge relation defined by current-meter measurements. Maxima. April-June 1957: Discharge, 13,400 cfs 8 a.m. May 29 (gage height, 24.95ft). 1930 to March 1957: Discharge, 33,600 cfs July 6, 1942 (gage height, 34.45 ft). Flood of October 1913 reached a stage about half a foot higher than that of July 6, 1942. Remarks. Much of the flow of the creek enters sinkholes and caverns in the Glen Rose limestone and in the Edwards limestone in the Balcones fault zone, which crosses the basin above station at Selma.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 327 740 762 11 15 48 132 21 2,290 60 58 2 252 354 3,6SO 12 14 42 111 22 1,220 42 60 3 90 178 5,530 13 13 502 96 23 252 34 53 4.. _ .. 50 123 1,040 14 12 155 85 24 1,250 30 50 5.. 33 95 669 15 15 72 76 25 1,440 28 47 6-.. ... 25 76 800 16 16 60 68 26 2,820 27 44 7 - 21 68 371 17 102 45 66 27 5,940 184 42 8 . 20 57 327 18 55 347 67 28 6,240 3.690 41 9 . 17 141 191 19 334 161 62 29 3, 530 10,400 40 10 16 227 161 20 3,420 103 58 30 1,900 1,240 38 31 572

Monthly mean d ischarge, in cubic feet per s 1,058 642 494 KunofT, in acre-fc et 62,930 39, 470 29,420 B254 FLOODS OF 1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage height Discharge Hour Gage Discharge height height April 18 Aprtt 2d Cori. May 12 12 p. m ...... 1.33 35 6 66 QQC 1 40 1 D.m__ .... 6. 84 925 6.- . . 1 Qcn May IS 9...... 11. 60 2,230 3 a.m_ - 1.30 34 12.-.-. _ ... 12.58 2,520 9 a.m _ . .... 1.39 46 i £ 10 1.84 5...... 1.74 67 April 26 88 2 Qc 11_ .- 2.20 123 12m--- 3.20 8 ...... - 3.64 308 6 a.m _ .... 246 10...... 14.19 3,080 2p.m._ ..... 5.95 730 4.00 362 8 14.55 3,230 12 m___ ..... 4.12 382 7.56 1,090 10 14.58 3,250 6:30.- 8.38 1,300 4 36 425 14.24 3...... 4.41 434 8...... 8.10 1,230 6 p.m-__ - 11 77 2,280 12 5.18 576 4...... 4.38 428 7.- .- 11.81 2,290 6...... 3.97 357 10 13.17 2,700 8__ ...... 3.38 271 May U 10 . -. K A 1! 3 a.m------12 ...... 1,240 3.26 254 6 2.52 161 April HO 2 17 121 3 a.m ___ ... 16.40 4,140 1 98 101 6 ...... 19.48 6,190 4 p.m.-----.. 6 a.m.. _ .-. 12.35 2,460 1.85 89 7,140 12 . 91 15. 49 3,720 10:30-- 20.61 7,280 3 p.m...... 16.73 4,410 20.56 7,230 6-...... 17.08 May 26 8 . 16.93 4,530 9- 18.57 5, 520 119 4,280 11 18.36 5,370 12-.--.. _ -.- 16.77 4,430 12 .... 18.36 5,370 April gl April M 1.12 Oft 1 a.m ___ _ 16.83 12m.. . --. 1.21 32 4,470 2 a.m __ .... IS. 53 5,490 1 p.m...... 1.28 37 "i...... - 16.68 4,380 9.--..--...... 3...... 19.82 6,480 2 . 1.65 69 16.26 4,140 12m ------20.04 6,690 3 -- - 2.25 6 14.24 3,100 130 9...... 19 69 . Oo 271 11.45 2,180 7 ------20.00 6, 650 9-_ ---_ 12 m-- 8.00 4.65 477 1,200 9 19.83 6, 490 12- 7.10 984 2p.m____- 6.75 905 12. . . 18.87 5,740 3 ...... 7.05 972 May 28 9.65 1,650 10 . - 10.85 2,000 19 11.27 2 a.m ___ --. 7.71 1,130 16.74 4,380 7.75 1,140 A^ril 09 10 13.60 7

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957- Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

June I Con. June 3 June 5 4.21 419 7,720 5.16 596 12m___ ... 4.07 396 3---_.. . 20.60 7,560 7:30.. 5.53 668 4.67 502 9...... 18.87 5,910 12m...... 4.98 560 4...... 5.67 696 12m... . 18.28 5,470 3:30 p.m ...... 4.68 504 7 8.10 1,250 17.60 4,980 9 6.54 883 12 10.31 1,870 7 16.57 4,320 7.47 1,100 12 12.90 2,630 June % June 6 June 4 3:30 a.m..... _ 10.89 2,040 2:30 a.m. _. 7.65 1,140 6...... 10.66 1,970 8.04 1,240 4.-.-.. _ 7.57 1,120 9 11.24 2,140 8 6 90 960 7.05 996 12m.- . 13.03 2,680 10...... 6.50 874 12m---. 5.78 718 15.60 3,800 6.25 819 5.46 656 6 18.22 5,430 6.02 769 4...... 5.26 616 8 19.43 6,370 5.57 676 7...... 5.10 584 12 20.68 1 9 616 12 4.86 536

173. SAN ANTONIO RIVER AT GOLIAD, TEX. Location. Lat 28°39', long 97°22', on right bank at upstream side of pier of bridge on U.S. Highway 183, 1.3 miles southeast of courthouse in Goliad, Goliad County, and 10 miles upstream from Manahuilla Creek. Drainage area. 3,918 sq mi. Gage-height record. Water-stage recorder graph except 12 p.m. May 7 to 6 p.m. May 10, 4 p.m. May 13 to 8 a.m. May 14, 7 p.m. May 24 to 2:30 p.m. May 27, 1 a.m. to 2:20 p.m. June 13, for which recession graphs were drawn on basis of U.S. Weather Bureau readings of wire-weight gage. Datum of gage is 91.08 ft above mean sea level datum of 1929, Houston supplementary adjust­ ment of 1943. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 10,300 cfs 6 a.m. May 2 (gage height, 31.56ft). 1924-29, 1939 to March 1957: Discharge, 33,800 cfs July 9, 1942 (gage height, 44.9ft). Floods of October 1913 and June 15, 1935, reached about same stage as that of July 9, 1942. Remarks. Flow slightly regulated by Medina Lake and Olmos flood-control reservoir (combined capacity, 269,500 acre-ft). Storage began in Medina Reservoir in 1913, and Olmos Dam was completed in 1926. Flow also slightly regulated by [U.S.] Soil Conservation Service floodwater detention reservoirs on Calaveras Creek and Escondido Creek. B256 FLOODS OF 1957

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June l 2,700 9,990 7,800 11 150 1,180 1,030 21 1,960 1,530 435 2 2,330 10,200 7,750 12 151 1,850 806 22. . 5,030 1,410 395 3 1,290 9.380 7,220 13 150 1,080 689 23 6,990 1,600 387 4 698 7,890 6,920 14 - 138 944 614 24. . 7,420 1,050 348 5 446 5,350 7,500 15 146 1,870 546 25 5,720 589 323 6 310 1,650 7,800 16 . 1,430 1,270 494 26 3,720 468 336 7 244 883 6,820 17 2,430 793 464 27 4,920 649 283 8. _ 213 748 4,710 18 288 1,430 435 28 7,290 2,730 246 9 . 184 671 2,330 19 294 3,090 476 29 8,640 4,450 222 10 159 707 1,510 20 .. 440 2,370 524 30 9,420 5,400 213 31..... 6,800

Monthly mean c ischarge, in cubic feet per 2,515 2,904 2,321 Runoff, in acre-fc et 149, 700 178, 600 138, 100

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 15 April 23 May 2 Con. 3.70 262 26.83 7.080 31.52 10,200 27.73 7,520 31.18 9,950 April 16 April 24 May 3 5.34 5.39 536 27.88 7,600 12m.._- 30.53 9,430 9 . 5.10 487 27.78 7, 550 29.60 8,710 11 6.35 703 26.64 6,980 7.85 973 10.53 1,510 12.75 2,040 12 m...... 28.38 7,890 8...... 16.00 2, 850 12m...... 24.07 5,780 12p.m. __ . 26.81 7,060 12. .-- ... 17.70 3,360 20.55 4,320 May 5 April 17 April 26 23. 62 5,580 18.10 3,480 18.46 3,590 20.75 4,400 8...... 17.23 3,220 12m. ....--.. 18.23 3,520 12 17.01 3, 150 12m.. _ .... 15.40 2,700 18.17 3,500 11.00 1,600 6 _ .... _ ... 18.35 3,560 May 6 10. 7.38 888 12 18.88 3,710 19 6.37 707 12.97 2,090 April 27 9.72 1,340 April 18 8.44 1,090 4am 19.20 3,820 12 7.94 989 4.85 446 5. .... 19.53 3,940 6...... 3.86 288 20.28 4,210 May 9 12 m...... 3.56 22.38 5,050 a QQ O1 ^ 6.04 647 12 3.43 220 May 10 23.40 5,480 6...... 27.10 7,210 12m...... 5.99 638 3.89 OQO 9 _ 28.33 7,860 C.89 800 12m.. . 28.38 7,890 10 7.09 836 28.28 7,830 12 7.07 833 12 28.67 8,060 3.82 OS1 May 11 316 April 29 5.40 KQQ 7.05 829 12 7.79 962 29 60 8,710 6 7.45 901 30.08 9,070 12m.. 8.82 1,160 10.19 1,440 12 - 11.29 1,670 10.08 1,420 12m...... 1,740 12 m...... on W 9 4on May 12 14.48 30.95 9,770 12 18.10 3,480 12m-. 12.45 1,960 12.51 1,980 6. .... - 12.32 1,930 April 22 10, 000 12 . 11.49 1,720 10,200 21.00 May 13 12m....-. OO QA 5,220 May & 12m.-. . 7.92 986 12p.m ...... 25.15 6.270 6a.m... _ .. 31.56 10,300 12p.m_.._ 6.03 646 TEXAS AND ADJACENT STATES B257

Gage height, infect, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May 14 May n June I Con. 1 a.m.- __ - 5.95 632 12 m.. ------9 95 1,390 28.57 8,000 6___ _ 6.47 725 9.23 1,250 19 28.51 7,970 12m...... 7.55 919 8. ------9.06 1,210 12p.m...____ 9.85 1,370 12 . 9.17 1,230 May 15 Mayffi 12 m.. ------28.14 7,740 27.79 7, 560 12 m.. -_._.__ 12.63 2,010 4.93 459 12.98 2.100 12 . 12.50 1,980 May 27 12m,...- 27.10 7,210 May 16 4.93 459 26. 52 6,920 12m..- . 5.92 626 12m.-.-- 8.97 1,190 6.92 806 7.40 892 7.04 827 12 ------7.00 820 9_ . 7.11 840 26.35 6,840 12-..-- -. 7.63 933 12m _ ------26.3o 6,840 May 17 26.87 7,100 May 28 7.00 820 12m-.. 6.95 811 11. 65 1,760 12 p.m.., 6.47 725 16.00 2,850 27.71 7,520 18.95 3,740 28. 33 7,860 May 18 12 . 20.23 4,190 June 6 5.82 609 A/f/77/ 9Q 12m...-.-.. 7.15 847 28.45 7,930 7.68 942 20.34 4,240 12m... 28.38 7,890 4 . 11.20 1,650 1...... 20.37 4, 250 12p.m... 27.67 7,500 6_ 13.90 2,320 12 m.. ------20.75 4.400 12-.. 18.10 3,480 21.90 4,860 12m.... 26.42 6,870 12 p.m...... 24.68 6,060 23.09 5,340 8.-.------18.25 24.68 6,060 12m...... 17.02 3,160 14.90 May 31 23.43 5,490 12_._.-.- -. 13.98 2,340 12m...---- 21.67 4,770 12m.... .- 26.30 6,810 6 p.m..._. 19.49 3,920 May 80 27.65 7,480 12. 17.40 3,230 2. 330 June 9 12m .....__ 14. 33 2,430 15.26 2,640 14.37 2,440 28.30 7,840 12m... 13.75 2,220 7 14.15 2,390 28. 39 7,890 12.75 1,960 12 -- 13.38 2,200 6. ------28.52 7,970 12 12.13 1,800

NUECES RIVER BASIN

174. NUECES RIVER AT LAGTJNA, TEX. Location. Lat 29°25'45", long 99°59'50", on right bank 0.5 mile downstream from Sycamore Creek, 1 mile northeast of Laguna, Uvalde County, and at mile 395. Drainage area. 764 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 1,119.72 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 6,490 cfs 9:30 a.m. May 27 (gage height, 8.18ft). 1923 to March 1957: Discharge, 307,000 cfs Sept. 24, 1955 (gage height, 29.95 ft in gage well, 32.7 ft from floodmark), from rating curve extended above 40,000 cfs on basis of slope-area measurement of peak flow. B258 FLOODS OF 1957

Maximum stage known since at least 1854, that of Sept. 24, 1955. Flood of June 1913 reached a stage of about 29 ft; flood of Sept. 21, 1923, reached a stage of about 26.5 ft; information from local residents.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

25 213 973 11 22 102 208 21.. 43 135 160 2. .. 186 1,400 12 21 102 210 22 44 126 153 3 .. 25 175 674 13 22 131 213 23 39 120 147 4 .. . 24 165 478 14.__- 22 139 195 24..... 363 112 142 25 147 388 24 115 182 25 224 110 140 6 25 132 332 16 25 124 175 26. 120 109 140 7 25 120 294 17 25 142 168 27 - 242 912 134 8...... 25 115 273 18 26 161 165 28 237 262 130 9 .. 24 110 246 19..... 49 175 180 29 __ 306 208 119 10 22 105 225 20 44 150 175 30 230 180 115 31.. 247

Monthly mean c ischarge, in cubic feet per 79.1 172 284 Runoff, in acre-fejet 4,710 10, 570 16,930

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April %3 May #7 Con. June 1 12 p.m... __ 1.58 37 6,490 2.41 374 10 ...... 6.01 3,080 12 m... ------2.42 377 April % 11 4.31 1,390 2.40 370 3.62 930 3 - 2.47 394 12 m...... 1.60 40 584 2.39 366 4.24 1,290 4...... 2.53 416 7 2.86 544 2.--. .... 3.98 1,100 6 2.27 324 8 ------7.54 5,330 6...... 3.23 636 19 300 6.65 3,930 9.. .. 2 QQ 470 2 990 12 2.64 07fi 12 April Z5 2.13 279 12m.- 2.06 258 6 a.m __ .... 2.32 261 2.04 252 4.34 1,410 12m...... 2.13 207 12 1.96 228 5...... 4.04 1,190 2.00 168 6 4.24 1,330 12- - 1.93 147 7...... 4.76 1,750 8. 4.96 1,930 April 86 1.89 208 9 ...... 4.93 1,900 1.82 190 12m...... 4.55 1,580 12m..- 1.82 115 4.09 1,230 10 p.m...... 1.77 102 8 3.79 1,030 11 - 1.84 120 1.78 180 3.56 900 12 1.83 118 1.73 168 June 3 May 26 May 31 1.72 165 3.29 745 12p.m...... 1.85 7 - - 1.79 182 3.10 650 8 -- 1.80 185 2.95 580 May 27 9...... 1.87 202 12 . 2.85 540 12m. ------1.84 195 5 a.m __ . ... 1.83 119 1.87 202 6..- -._.. 1.95 145 4 1 96 7 ...... 2.55 310 6 . 370 2.69 476 8.....-. .. 7.05 4,520 8 ...... _ 2.49 402 2.54 419 8-30. 6.70 4,000 10. 2.49 402 9...... 7.75 12 2.46 391

175. WEST NUECES RIVER NEAR BRACKETTVTLLE, TEX. Location. Lat 29°28'55", long 100°14'20", at Wilson ranch, 9 miles downstream from Loss Creek, 11 miles upstream from Liveoak Creek, and 15.8 miles north­ east of Brackettville, Kinney County. TEXAS AND ADJACENT STATES B259

Drainage area. 700 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 1,326.79 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments below 1,900 cfs and by slope-area measurements at 10,000 and 51,000 cfs. Maxima. April-June 1957: Discharge, 31,000 cfs 11 p.m. May 16 (gage height, 17.40ft). 1939-50, 1956 to March 1957: Discharge, 51,000 cfs June 25, 1948 (gage height, 20.95 ft, from floodmark), from slope-area measurement of peak flow. Maximum stage known since at least 1879, about 40 ft June 14, 1935, ac­ cording to floodmark (discharge at site 33 miles upstream from gage and 2l/-> miles downstream from Kickapoo Creek, 580,000 cfs, by slope-area measure­ ment of peak flow; a second measurement, 24 miles downstream from gage, and 8 miles north of Cline, 536,000 cfs by slope-area method). Flood of Sept. 24, 1955, reached a stage of 27.1 ft (discharge, 150,000 cfs by slope-area mea­ surement of peak flow). Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

! _ .. 0 26 6.0 11 0 1.0 2.9 21 0 65 0.3 2 0 12 6.3 12 0 0 2.6 22 0 31 0 3... 0 8.2 6.0 13..... 0 .8 2.4 23 0 18 0 4. __..__ 0 6.6 5.6 14 0 2.4 2.2 24 0 12 0 5 0 5.3 5.0 15 0 5.0 1.6 25- 0 7.8 0 6_ 0 4.1 5.0 16 . 0 187 1.2 26 . 0 5.6 0 7 0 3.2 4.7 17..-. 0 4,990 1.0 27 0 6.0 0 8 ..- 0 2.6 4.1 18 0 637 .6 28 0 6.3 0 9 0 2.2 3.8 19 0 1,940 2.0 29 719 7.0 0 10 0 1.0 3.5 20 0 246 .6 30 178 6.6 0 31 6.6

Monthly mean c ischarge, in cubic feet per s 29.9 266 2.21 Runoff, in acre-ft>et 1,780 16, 370 132

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April #8 May 15 May IS Con. 3.17 5 0 8.00 3,060 11:30..-..- 9.65 5,800 12 9.62 5,740 9 a.m __ .... 0 12m... 5.0 May 19 10...... 5.70 890 3.17 5.3 11- . 7.14 2,060 10 1,100 8.22 3,370 12m-. --- 7 03 i Qar\ 17.40 8 . 7.18 2,100 5.83 12 12m... 6.35 1,380 12...... 5.12 5.92 1,040 May 17 5.58 812 12.98 13,900 12 5.12 522 5- ...... 10.37 7,310 6 a.m ...... 4.61 238 & . 8.88 4,410 12m-- .... . 120 7 4ft 2,420 4.77 320 6p.m...... 3.98 70 6.38 1,400 12 m...... 4.52 212 12 3 79 46 5.80 Qfift 4.30 142 884 12 - 4.13 102 May 1 12 5.48 747 3.65 33 May 18 3.98 75 12m.-.-....- 3.54 9d 4 97 432 3.89 62 6p.m...... 3.45 18 4.78 325 3.80 51 12 ...... 3.39 15 4.44 184 12 3.71 42 B260 FLOODS OF 1957

176. NTJECES RIVER NEAR ASHERTON, TEX. Location. Lat 28°30', long 99°42', on right bank just downstream from bridge on Farm-to-Market Road 190 between Asherton and Brundage, 1.2 miles downstream from El Moro Creek, 5.5 miles northeast of Asherton, Dimmit County, and at mile 288. Drainage area. 4,082 sq mi. Gage-height record. Water-stage recorder graph except May 12-16. Datum of gage is 470.92 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Discharge May 12-16 estimated on basis of a normal recession. Maxima. April-June 1957: Discharge, 7,750 cfs 5 a.m. June 2 (gage height, 27.82ft). 1939 to March 1957: Discharge, 24,000 cfs Sept. 2, 1944 (gage height, 30.40 ft). Maximum stage known since 1900, about 33 ft June 17, 1935, present site and datum (based on relation determined from levels to floodmarks for floods of June 17, 1935, and Sept. 2, 1944, at farmhouse on left bank 0.8 mile upstream from gage). Remarks. Part of flow of Nueees River and its headwater tributaries enters Edwards limestone in Balcones fault zone, which crosses basin just north of Uvalde. Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 0 5,660 7.100 11- 0 34 151 21 1,720 1,180 5.1 2.. . 0 5,600 7,460 12 0 25 106 22 3,410 2,470 5.1 3... 0 4,810 6,520 13 0 18 78 23 3,980 2,630 4.2 4...... 0 2,880 6,400 14 0 12 57 24 3,700 1,610 2.8 0 968 6,250 15 0 8 43 25 4,020 527 1.7 6...... 0 298 5,280 16 0 5 28 26 4,630 198 .9 7 0 148 3,080 17 0 3.8 20 27 4,240 816 .6 8...... 0 95 1,040 18 0 4.2 15 28 3,130 3,860 .3 9-...... 0 66 407 19 35 52 9.2 29 3,580 5, 970 .1 10 0 47 240 20 86 1,330 5.9 30 5,150 6,280 0 31 6,280

Monthly mean c ischarge, in cubic feet per s 1,256 1,738 1,477 Runoff, in acre-fe et 74,740 106, 900 87, 890

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 20 April 24 April 28 12 p.m__ ..... 2.67 34 21.20 3,630 12m... . 19.10 3,020 3,580 9p.m...... 18.58 2,870 April 21 12 21.38 3,680 12 18.65 2,890 2.66 34 2...... 4.25 128 3 . 7.35 471 12m.... _ .. 20.55 3,440 5 . 10.50 12 m__...... 22.43 4,020 23.75 4,530 8 12.95 1,470 23.33 4,340 12m... 15.00 1,940 18.56 2 87(1 12m.__ 25.12 5,260 25.62 5,560 April 22 12m...... 24.12 4,710 12m... 20.65 24.23 4,760 21.92 3,850 12 24 17 4,740 12m..... 25.80 5,690 12 p.m...... 25.83 5,710 April 2S April 27 12m... . 22.52 4,050 May 2 22.55 12m... 23.22 4,300 12 m._ ...... 25.72 5,630 12...... 22.20 3,940 12 p.m _ .... 21.23 3,640 12p.m _ .... 25.36 5,410 TEXAS AND ADJACENT STATES B261

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May 3 May 2$ May 31 Con. 12m...... 24.50 4,900 12m... 17.38 2,560 12m..-.--... 26.62 6,340 12p.m...... 22.50 4,040 12p.m...... 18.20 2,780 12 p.m...... 26.78 6,480 May 4 May S3 June 1 12m...... 18.65 2,890 18.24 2,790 12m.- - 27.36 7,110 12p.m...... 14.00 1,700 12m... . 17.90 2,700 27.77 7,680 12p.m...... 16.40 2,310 May 6 June S May 24 12m...... 9.77 861 27.82 7,750 7 20 AK(\ 12 m...... 13.53 1,610 27.69 7,570 9.95 904 27.20 6,920 May 6 May SB JuneS 12m...... 5.82 277 12p.m...... 4.96 188 8.50 654 12m.. - 26.70 6,410 12m...... 7.37 482 12 p.m...... 26.63 6,350 May 7 12p.m...... 5.78 279 June 4 12 m...... 4.44 143 4.08 116 12m.-. 26.71 6,420 12m... _ 4.85 185 26.70 6,410 May 18 12p.m ...... 4.36 142 June 5 12p.m...... 1.95 3.8 May 87 26.54 6,270 May 19 4.23 132 26.27 6,040 10 6.22 334 1.94 3.5 12m-.. 8.12 596 9 2.25 16 11.65 1,230 9:30... . 4.00 110 12...... 15.00 1,960 12m-. ------25.33 5,390 10...... 5.00 192 23.18 4,280 11 8.10 581 May 88 12 9.40 794 19.85 3,260 12m...... 22.63 4,120 19.39 3,100 24.94 5,220 16.65 2,360 1,350 14.53 1,820 10 12m... 13.43 1,570 June 8 12.00 1,280 12m...... 26.40 6,140 12...... 10.60 1,010 12p.m...... 26.67 6,380 12.22 1,320 10.15 929 May SI 7.84 542 12m...... 26.55 6,280 9.18 758 26.42 6,160 June 9 12m. _ ..... 10.25 952 lo ftn 1,410 May 31 6.78 394 12.. __ .. _ 15.15 1,980 26.38 6,120 12 p.m. ------6.01 299

177. NUECES RIVER NEAR TILDEN, TEX. Location. Lat 28° 18', long 98°34', on left bank at downstream side of pier of bridge on State Highway 173, 2 miles upstream from Cow Creek, 10.5 miles south of Tilden, McMullen County, and at mile 141. Drainage area. 8,192 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 183.5 ft above mean sea level, datum of 1929 (levels by U.S. Geological Survey, Topographic Division). Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 27,600 cfs 9:30 p.m. Apr. 30 (gage height, 22.64 ft). 1942 to March 1957: Discharge, 70,000 cfs Oct. 11, 1946 (gage height, 26.46 ft), from rating curve extended above 45,000 cfs. Maximum stage since about 1900, that of Oct. 11, 1946. B262 FLOODS OF 1957

Remarks. Part of flow of Nueces River and its headwater tributaries enters Edwards limestone in Balcones fault zone which crosses basin just north of Uvalde. Considerable loss of flood flows into various permeable formations occurs downstream from the Balcones fault zone.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

l._ .... 14 20, 700 12, 400 11 0 3,940 6,010 21-_ 1,050 536 345 2. ... 12 12, 300 8, 150 12...,. 0 3, 050 5,580 22 1,960 576 702 3 ... . 6.5 7,600 6,180 13... .. 0 2,680 5,080 23- 4,000 314 452 4 ... 3.5 6,160 7,260 14 .. 0 1,830 4,040 24..... 3,190 122 288 5 _ 1.3 6,330 9,810 15 .. 0 477 3,030 25 2,610 366 170 6 .6 5,980 10,000 16 .1 213 2,100 26 3,880 596 64 7 .... .2 5,400 8,940 17 .1 162 687 27 5,040 883 30 8 .1 5,130 7,390 18 .1 487 201 28 3,970 2,250 19 9. ... 0 4,960 6,770 19 .1 475 124 29 5,190 7,870 13 10 0 5,400 6,390 20 9.8 356 114 30 17,200 9,650 11 31 11,000

Monthly mean c ischarge, in cubic feet per s 1,605 4,122 3,745 Runoff, in acre-feet._ . 95, 480 253, 500 222,800

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

Apr. 19 Apr. 86 May 2/i 12p.m-- ..... 2.05 12 m 17.89 3,910 5.66 132 18.25 4,850 Apr. 20 May %5 Apr. 27 8 p.m.. ___ 2.05 6.92 244 9 . 2.13 .5 1ft 41 5,290 8 7.74 333 10 3.85 34 18.41 5,290 8.22 393 11 5.65 103 10 1ft 1ft 4,670 9.10 510 19 7.25 Apr. 28 May Z6 Apr. 21 17.87 12 m. . 9.74 600 1 a.m ------8.87 300 3,580 10.28 676 2 .... 10.22 415 10 17.77 3,610 3. ... 11.44 549 May W 4 ___ .- 12.49 684 A Ttr 9Q 722 9 14.77 1,100 1 7 Q1 11 10.68 736 12 m . _ .. 15.12 1,190 1 ft 9Q 4 930 11.00 784 15.47 1,290 19 14 7 *»on 12.79 1,080 12 . 12 13.83 1,290 Apr. SO Apr. n May 28 19.66 9,490 8 a.m...... 16.08 1, 520 g 20.20 11, 800 14.83 1,610 12 m __ ._ 16.44 1,710 12 m .... 21.10 12 m __ ----- 15.75 2,090 6 p.m... ._ 17.05 2,300 01 00 21 600 16.59 2,690 12 ...... 17.59 3,200 6 ...... _ 22.48 12 - 17.65 3,940 9:30 22.64 27,600 Apr. 15 12 22.10 23,200 May 29 17 Q1 3 Q7O 18. 38 5,530 12 m ___ ... 4,300 g 18.93 7,090 2p.m._- ..... 18.05 4,330 21 QQ 21 700 19.32 8,320 12 17.87 3,860 21.07 16,200 19.60 9,300 8 19.76 9,890 19.84 10, 200 12 m. -. ... 17.55 3 ion 12p.m.. 17.28 2,650 on 9Q 19.56 9,160 2 a.m ...... 19.85 10,300 e. . 19.83 10,200 6 a.m ____ 17.20 19.69 9,620 12 m 17 1ft ? KOA 9,120 6 p.m ...... 17.25 2,610 12 m._...... 19.03 7 ^on 19.52 9,020 12 _ . 17.41 2,860 12n.m 18.71 6.450 12 19.53 9,060 TEXAS AND ADJACENT STATES B263

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957- Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May Si June 2 Con. June 5 Con. 18.77 6,620 19.89 10,500 12 m 11,200 12 19.88 10,400 20.10 11,400 5...... 20.23 12.000 8 20.45 13,000 12 m__ 18.56 6,010 12 13,600 18.55 5,980 19. 85 10, 300 12 18.62 6,190 12 m.- __ -- 19.76 9,890 19.71 9,690 6 19.70 9, 650 20.60 13,800 12 19.80 10,000 6_ 20.57 13,600 12 m 18.94 7,120 12 m 20.35 19 600 19.40 8,600 . June 7 19.79 19.68 9,580 June 5 12 m._.- _ .. 19.48 8,880 19.80 19.32 8,320 12 m 19.22 19.87 10,400 12 19.20 7,930

178. FRIO RIVER AT CONCAN, TEX. Location. Lat 29°29', long 99°42', on left bank half a mile southeast of Concan Post Office, Uvalde County, and 15 miles upstream from Dry Frio River. Drainage area. 405 sq mi. Gage-height record. Water-stage recorder graph except Apr. 25 to May 15. Discharge record. Stage-discharge relation defined by current-meter measure­ ments below 7,400 cfs on basis of slope-area measurements at 29,400 and 162,000 cfs. Discharge Apr. 25 to May 15 estimated on basis of two floodmarks and record for Dry Frio River near Reagan Wells. Maxima. April-June 1957: Discharge, 13,400 cfs 11 a.m. Apr. 24 (gage height, 10.45ft). 1923 to March 1957: Discharge, 162,000 cfs July 1, 1932 (gage height, 34.44 ft, from floodmarks), from slope-area measurement of peak flow. Maximum stage known since at least 1869, that of July 1, 1932. Remarks. Part of flow of Frio River enters Edwards limestone in Balcones fault zone, which crosses basin just north of Uvalde and below station.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 41 IfiO 762 11 20 47 118 21 22 52 76 2 28 130 414 12 18 45 115 22 89 48 73 3 .. 23 105 270 13 18 55 112 23 55 46 70 4...... 20 95 217 14..... 20 60 108 24 1,810 46 68 5 20 80 195 15 20 52 101 25 400 44 66 6 20 70 178 16 22 48 92 26 130 44 66 7 20 65 155 17 22 46 87 27 1,000 563 63 8 18 60 143 18----. 20 61 84 28 300 126 61 9 18 55 132 19 28 66 84 29 800 56 56 10 20 50 125 20..-. 23 54 81 30 300 50 54 31 337

Monthly mean c ischarge, in cubic feet per s 178 90.8 141 Runoff, in acre-feet. 10,600 5,590 8,380 B264 FLOODS OF 1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

Apr. 21 May®? May 31 Con. 12p.m...... 3.62 23 3.79 52 12m.. . 4.80 524 7...... 3.81 56 5.21 866 8 . 4.20 183 3 ...... 4.98 668 9... 5.60 1,290 6 4.70 453 6 a.m ...... 3.72 37 10 6.28 2,200 12 4.48 318 10 ...... 3.68 30 10:30.-. 6.40 2,390 4 19 147 11 6 oc 2 1 fin 12m...... 4.26 204 12m.. 5.68 1,380 2p.m...... 4.19 174 5.22 875 4.33 241 6...... 4.04 118 4-...... 4.95 644 4.26 208 12 . 3.91 78 6...... 4.62 402 4.25 204 g 4.37 260 2...... 4.40 276 Apr. 23 12 4.24 199 3 . 4.65 420 4_. _ _ . ... 4.95 644 6 a.m ...... 3.84 61 5 _ . _ ..... 6.30 2,240 12m...... 3.80 52 6 6.65 2,810 3.75 4.10 143 8:30-.. 6.68 2,860 4.02 115 7...... 6.53 2,600 3.94 90 8 6.13 1,980 3.74 41 10 5.42 1,080 10...... 5.00 676 12 5.08 749 11...... 10.45 13, 400 12m..- 8.90 3.87 70 7.75 2 _ .. .. . 6.90 3,270 May 31 4.88 588 4...... 6 1 ft 2 nfin 4.77 500 6...... 5.68 3.87 70 8 4.66 427 8 _ . 5.28 5 3.90 78 12m 4.57 370 10...... 7AQ 6 3.98 101 4.53 347 12..--.-.. _ . 4.82 540 T...... 4.12 151 12 4.47 312 8...... 4.20 183 10 - 4.31 231 3.79 52 11 . 4.51 335

179. SABINAL, RIVER NEAR SABINAL, TEX. Location. Lat 29°30', long 99°29', on right bank 470 ft upstrean from low- water crossing on old Sabinal-Utopia road, 3.5 miles downstream from Onion Creek, and 12 miles north of Sabinal, Uvalde County. Drainage area. 206 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 1,131.20 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments below 1,000 cfs and by slope-area measurements at 8,490, 10,600, 15,800, and 72,000 cfs. Maxima. April-June 1957: Discharge, 9,340 cfs 12 m. Apr. 24 (gage height, 10.23ft). 1942 to March 1957: Discharge, 15,800 cfs May 24, 1954 (gage height, 14.18 ft), from slope-area measurement of peak flow. Flood of July 2, 1932, reached a stage of about 29 ft; information from local residents. TEXAS AND 'ADJACENT? 'STATES B265

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 0 29 1,020 11 6 9.7 48 21 0 14 34 2 0 22 326 12 0 9.7 48 22 27 13 32 3. 0 20 152 13 0 17 48 23 13 11 31 4 .... 0 16 111 14 0 22 46 24 1,570 9.7 29 5. ... 0 13 108 15 0 14 44 25 203 8.6 29 6 0 12 108 16 0 12 40 26..... 359 8.6 27 7_ ... 0 11 92 17 0 9.7 38 27 572 447 26 8_ 0 11 69 18 0 21 36 28 175 135 26 9 0 11 63 19 .. 2.8 26 38 29 109 74 24 10 . 0 11 55 20 3.1 18 38 30 38 55 21 31 246

Monthly mean c ischarge, in cubic feet per 102 43.1 93.6 Runoff, in acre-fe et 6,090 2,650 5,570

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April K April 27 Con. May 28 12m. . . 1.33 12 3.50 1,060 1.88 149 6 . 2.80 590 12m.- 1.78 114 April H 9...... 2.20 275 1.70 89 12m-.. 1.95 176 9:30 a.m ...... 1.23 3.1 1.75 104 10 4.38 1,800 12 ...... 1.70 89 10:30 4.38 1,800 12m . 1.65 74 11 5.00 2,420 April 28 12m.. 10.23 9,340 May SO 2p.m. _ .... 7.20 5,120 12m 1.62 66 3 ...... 5.70 3,200 1.75 104 12m. .. 1.58 55 5. ... 4.15 1,600 3...... 2.15 254 8...... 3.10 775 5...... 2.50 420 May 31 12 2.52 431 9...... 2.20 275 11 2.27 306 1.54 46 April 25 12 2.17 263 9...... 1.97 183 10 1.92 164 2.11 238 April 29 11.--- __ 2.55 448 12m...... i on 156 2.50 420 108 1.90 2.40 370 11 - 1.69 86 8...... 1.76 108 4 2.60 475 19 3.00 710 12m-- 1.68 QQ 8 2.28 311 60 12 ...... 2.08 226 April 26 May 26 June 1 5.16 2 600 12m - 1.87 145 2 ...... 3.55 1,100 1.30 8.6 1.92 164 4. .... 2.70 530 3 3.75 1,260 8.- ... 2 no 203 May 27 4 4.90 2,320 12 m...... - 1.83 131 1.37 17 5. 7.10 4,990 1 60 60 12m 1.72 95 5.65 3,140 12 2.10 234 4.20 1,640 9 3.85 1,340 2...... 3.93 1,400 12 3.08 762 April £7 3...... 4.30 1,730 6 . 3.10 775 3.75 1,260 8. .... - 2.62 2.52 431 2...... 6.77 4,560 10...... 2.35 345 12m - 2.16 259 3- ...... 4.80 2,220 12 .. 2.16 259 1.98 187

656087 O 62 18 B266 FLOODS OF 1957

180. HONDO CREEK NEAR HONDO, TEX. Location. Lat 29°27', long 99°11', on left bank 43 ft upstream from Schlentz's Crossing, 7.8 miles northwest- of Hondo, Medina County, and 13.5 miles upstream from Verde Creek. Drainage area. 132 sq mi. Gage-height record. Water-stage recorder graph, except 6:30 a.m. Apr. 28 to 2:30 p.m. May 8, 10 a.m. June 5 to 12 m. June 20, 8:30 a.m. June 27 to 12 p.m. June 30. Datum of gage is 986.4 ft above mean sea level (Western Geophysical bench mark). Discharge record. Stage-discharge relation denned by current-meter measure­ ments below 450 cfs and by slope-area measurement at 12,500 cfs. Discharge for periods with no record of gage height estimated on basis of recorded ranges in stage and records for station near Tarpley. Maxima. April-June 1957: Discharge, 17,300 cfs 9:30 a.m. Apr. 24 (gage height, 12.30 ft, from floodmarks). 1952 to March 1957: Discharge, 13,700 cfs May 24, 1954 (gage height, 10.90 ft, from floodmarks). Maximum stage since at least 1910, 25.8 ft in September 1919; information from local resident. Remarks. Most of the low flow of Hondo Creek enters Edwards and associated limestones in Balcones fault zone, which crosses basin upstream from station.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1- ... 24 40 554 11- 0 4.4 35 21. 1.5 8.7 27 2-. -..- .8 20 254 12..... 0 .9 30 22. . 891 5.4 16 3 .... 32 15 154 13 - 0 120 30 23 21 3.7 13 1.9 10 112 14 0 34 25 24 1,740 2.4 13 0 8 180 15 0 59 20 25 84 1.5 8.7 6 . 0 4 90 16 0 8.9 15 26.. 361 1.1 6.4 0 3 55 0 3.6 10 27 639 2,430 2.4 8 .. 0 1.5 50 IS..... 0 220 8 28 124 223 0 9_ . 0 .8 45 19 252 44 75 29 150 97 0 10 0 20 40 20 13 14 75 30- 110 62 0 31 669

Monthly mean d ischarge, in cubic feet per 148 133 64. 8 Kunoff, in acre-f set 8,820 8,200 3,850

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1951

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 98 April 24 April tl Continued Continued 11 p.m...... 0 1.09 66 11 a.m.. _ .. 4.50 2,360 12 .96 38 12 .98 42 12m..... _ . 3.38 1,270 2.53 644 April n 4 2.18 447 5 ...... 2.50 626 1.15 80 .89 25 9 1.86 298 1:30...... 2.16 462 .85 18 12 1.55 177 2. 1.97 370 .80 10 3...... 6.50 5,050 12- 1.00 46 3:30- 9.76 11, 200 April &5 4...... _ . _ 5,370 A n.4/ Ott 5...... _ - 1,790 1.32 106 7...... 2.86 1.02 50 10...... 1.20 75 9- ...... - CQC 8 .88 23 11 1.20 75 11 1.83 307 12.00 16, 500 12m - 1.19 73 12m__ .... 1.67 242 12.30 17, 300 1.07 46 4 p.m...... 1.28 114 10...... 11.40 15,000 12 1.17 58 TEXAS AND ADJACENT STATES B267

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 26 April SO May SI 1.48 154 12m-. 1.21 .97 44 3 4.20 2,040 57 6...... 1.30 3:30__ 4.57 2,440 8:30.- 1.16 87 4 ... 3.95 1,790 May 26 9. -.- _ --.. 6.13 4,500 6_ ,_ - 2.56 662 10 5.20 3,210 S ___ 1.90 316 0.68 1.1 11 3.65 1, 510 12m.-.-. . 1.37 119 3.07 1,040 1.13 59 May 27 2.54 680 10...... 1.05 42 8 . 1.99 389 12 1 9^ .70 1 9 12 1.65 10- ... .80 11 April 27 11...... 1.19 Q9 12 m...... 1.24 106 1.48 154 6.50 1.52 201 2. ... 3,400 2 10.60 13, 100 12m- 1.44 174 2:30- 5.65 3,810 2:30-...... 11.00 14,000 1.42 167 4 ...... - 4.20 2,040 3:30.- 10.20 12,200 3:30. . 1.94 370 3.42 1,310 4:30- 1.70 269 1...... 2.56 686 6 5.30 3,340 5.-. ------3.50 1,380 9 - 1.98 375 7 3.97 1,810 5:30.-- 5.36 3,420 12m-- 1.58 208 2.87 7 3.75 1,600 1.27 111 10 2.55 692 10 2.40 596 19 114 19 477 1.98 384 April %8 May 28 June 2 1.27 111 1.85 325 1.61 234 6 ...... -. 1.18 87 6 _ 1.70 261 12m..- _ .. 1.53 204 8 ... - 1.17 85 1.52 194 1.53 204 10 1.27 111 1.41 158 4 ...... 1.79 307 1.25 106 1 9 1 O1^ 9 1.52 201 1.17 85 11 1.71 274 8 - . - 1.77 282 May 29 12-- 1.67 257 12 1.48 174 1.18 92 1.13 80 19 1.17 90 1.45 177 1.34 142 1.25 106 1.28 125 12m-. 1.12 73 1.10 68 1.10 73 6 . 1.95 361 12m- 1.05 61 12m- 1.24 114 12 1.50 180 .98 46 1.18 97

181. SECO CREEK NEAR D'HANIS, TEX. Location. Lat 29°29', long 99°23', on right bank a quarter of a mile downstream from concrete dam and road crossing at Woodward ranch headquarters, 2.8 miles upstream from Bartz Spring Creek, and 12.8 miles northwest of D'Hanis, Medina County. Drainage area. 87.4 sq mi. Gage-height record. Water-stage recorder graph below 6.2 ft and graph above 6.2 ft based on floodmarks, except May 5-8, June 19-23. Datum of gage is 1,142.8 ft above mean sea level (levels by U.S. Geological Survey, Ground Water Branch). Discharge record. Stage-discharge relation defined by current-meter measure­ ments below 110 cfs and by slope-area measurements at 2,090 and 8,110 cfs. Maxima. April-June 1957: Discharge, 4,620 cfs 8: 30 a.m. Apr. 24 (gage height, 7.17 ft, from floodmark). 1952 to March 1957: Discharge, 8,110 cfs May 24, 1954 (gage height, 9.30 ft, from floodmark). Maximum stage known since at least 1866, 26.2 ft in May 1935. Flood of Aug. 31, 1894, reached a stage about 10 ft lower than that of May 1935 and was the second highest; information from local residents. B268 FLOODS OF 1957

Remarks. All low flow of Seco Creek enters Edwards and associated limestones in the Balcones fault zone, which crosses basin just north of Uvalde and above station. Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 5.5 16 606 11 0 1.4 20 21 1.7 4.9 10 2 .5 12 155 12 0 2.2 20 22 --- 195 3.6 10 3 .2 8.8 77 13 0 37 17 23 16 2.3 10 4. _ -. .1 8.0 59 14 0 9.0 14 24- 481 1.8 8.0 5 0 7 58 15 0 8.2 13 25 35 1.5 7.2 6 0 6 48 16 0 25 9.6- 26 173 1.3 6.8 7 0 4 36 17 0 1.7 8.8 27 367 400 6.4 8 0 3 29 18 0 81 8.4 28 133 67 5.8 9 0 2.7 25 19 131 10 10 29 44 34 4.3 10 0 3.1 22 20 4.3 5.8 15 30 - 22 26 3.3 31 184

Monthly mean d ischarge, in cubic feet per s 53.6 30.8 44. 1 Runoff, In acre-fe et 3,190 1,900 2,620

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 18 April SS April 26 Con. 0 ..7Sf 6.8 9:30 p.m ...... 97 20 7...... 75 7.6 11 1.30 53 April 19 10 .66 4.6 11:30.. 1.47 81 .53 1 a 12 1.43 73 1 a.m ...... 0.65 4.0 2 ...... 1.15 36 1:30...... 93 17 3...... 1.20 41 April S7 3 ...... 78 8 0 6...... 1.06 27 3:30 2.00 215 12 .92 16 12:30 a.m ... 3.90 1,190 4 ...... 3.70 1,060 1.. ... _ 6.10 3,220 5...... 712 April 84 5.00 2,090 6...... 2.50 400 3 3.70 1,060 7 2.15 268 .75 7.6 4 -. __ . .... 2.82 545 9 ...... 1.68 1 9Q 7 '30 .80 9 C 2.39 356 12m 1.32 Cfi 8 6.20 3,340 6. __ ...... 2.10 250 1.07 OQ 8:30.. 7.17 4,620 8 ... 1.75 141 8... .92 16 9...... 6.00 3,100 12m... __ .. 1.47 81 12 .80 Q fi 10 . 4.00 1,260 10p.m... 1.25 47 11 3.02 645 11 1.40 68 April 20 11:30 . 2.66 472 12 1.39 66 2.80 535 6 a.m ____ . .70 5.8 2 .... 2.87 570 April 28 12m. _ ... .62 3.6 q 2.55 422 .49 1.3 5 1.99 212 1.37 64 7 1.71 131 3 1.43 73 April SI 1 9 1.41 70 12m...... 1.25 47 1:30 p.m...... 1.28 51 .40 April 23 2 1.36 62 .35 .2 2:30-.. 1.52 90 12 1.30 53 1.20 41 4 ___ . ___ - 1.61 107 12m. 1.08 28 1.81 157 April 22 1.02 23 6 2.75 512 9 99 OQO 11 07 20 8 2.36 345 \...... 2.35 341 1 9 1.26 48 10. 1.94 196 2 ___ _ . 2.50 400 12 1.62 110 2:30. 4.99 April 26 3 ...... 2.52 409 April 29 4 ...... 2.60 445 1.45 77 4:30- 3.56 964 2.10 250 1.23 45 5 ...... 3.40 860 1:30._. 3.50 925 12m.. 1.14 34 5:30 _ ...... 3.00 635 3.87 1,170 1.05 26 6 ...... 2.70 490 3 3.32 812 8...... 268 4 2.60 445 May 26 10 1.72 133 5. .... 2.17 274 12 m______. 1.45 77 6 ...... 1.88 177 12p.m... _ . .63 2.7 3 p.m...... 1.21 43 9 1.48 82 May. 27 6 ...... 1.06 27 12m. 1.26 48 12 . .87 13 6 D.m.-... 1.04 25 4 a.m _ .56 1.5 TEXAS AND ADJACENT STATES B269

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Oage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May 27 Con. May 31 June 1 Con. .68 3.8 1.07 23 3.35 830 11 .90 13 6...... 1.25 42 4...... 5.80 2,860 1.67 191 7 ...... 1 97 4:30.- 6.87 4,200 2.75 512 8...... 1.44 70 5. . . 6.35 3,520 4.50 1,650 9 ...... 1.82 154 5:30...... 5.50 2,610 9 2,320 10 . 3.49 918 6...... d i<\ 1,530 3 ...... 4.73 1,850 11- 2.62 454 T...... 3.26 776 4... 3.85 1,160 11:30.- 2.18 278 9...... 2.45 380 5 ...... 3.20 740 O O^l 296 12 2.04 OOQ 7...... 2.40 400 2...... 2.18 278 9 ...... 2.00 215 3 ...... 2.29 318 June 2 12 1 67 101 6 _ ... _ .... 1.98 209 1.83 160 10...... 1.65 110 12m-. .-.. 1.69 121 12 1.60 99 1.68 119 4...... 2.35 341 1.43 73 June 1 6 1.90 180 12 m 1.34 59 1.43 66 9...... 1.62 103 1.23 45 3 ...... 1.60 99 12 1.55 90

182. i;RIO RIVER NEAR DERBY, TEX. Location. Lat 28°44'10", long 99°08'45", near center of span at downstream side of pier of bridge on U.S. Highway 81, 150 ft upstream from International- Great Northern Railroad bridge, 750 ft downstream from Leona River, and 2.4 miles south of Derby, Frio County. Drainage area. 3,493 sq mi. Gage-height record. Water-stage recorder graph, except 12 m. June 18 to 12 p.m. June 27. Datum of gage is 449.47 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Discharge June 19-27 was estimated on basis of one discharge measure­ ment, reconstructed recession curve, and records of weather. Maxima. April-June 1957: Discharge, 10,400 cfs 12 p.m. May 29 (gage height, 11.34 ft). 1915 to March 1957: Discharge, 230,000 cfs July 4, 1932 (gage height, 29.60 ft, present site, from floodmark at former site), from rating curve extended above 46,000 cfs on basis of slope-area measurement of peak flow. Maximum stage known since at least 1860, that of July 4, 1932. Remarks. Part of flow of Frio River and its headwater tributaries enter Edwards limestone in Balcones fault zone, which crosses basin just north of Uvalde. Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 47 2,360 1,880 11 0 95 78 21. . 2,950 2,250 13 2...... 145 1,260 5,190 12 0 54 56 22 4,710 633 9.4 3. ... 33 441 6, 460 13 0 22 43 23. . 3.140 422 6.2 4 9.4 177 6,170 14 0 169 36 24..... 2,960 174 3.2 5...... 3.2 58 2,430 15 0 489 30 25 . 768 62 1.4 6... . .8 27 867 16- 0 1,830 26 26... - 2,840 27 .3 7 . .3 21 544 17 0 915 24 27.- - 2,150 60 0 8 . .1 17 348 IS - 0 142 22 28 . 3,700 1,010 0 9 ... - 0 7.8 184 19 5.7 1,610 18 29 . 3,920 7,430 0 10_ ... 0 3.2 126 20 777 5,280 16 30... . 4,010 7,790 0 11 2,690

Monthly mean c ischarg'e, in cubic feet per 1,072 1,211 819 Runoff, in acre-fset 63, 810 74, 430 48, 760 B270 FLOODS OF 1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 19 May 8 May 87 Con. 12 p.m...... 0.30 5.4 12m...... 5.25 1,320 79 54 3.19 657 April 80 May 88 Mays 7 a.m ...... 27 3.2 .63 41 8 1.00 102 12m...... 2.30 417 10 1.80 287 9 ...... 1.85 300 1.75 274 3.50 12m--.--... 3.23 669 6.60 1,860 6p.m...... 5.55 1,440 May 13 g 7.55 2,340 12 7.10 2,090 1 9 8.37 3 «AfA .40 14 April SI May 89 May 14 9 a.m...... 8.35 3,220 12m--. 10.45 7,740 12m--.-- ... 8.39 3,290 .38 19 11.17 9,890 8 p.m.. ------8.15 2,910 1.50 919 12 11.34 10, 400 12 8.38 3,280 12- 2 no 580 May 30 April $2 May 15 12m 10.55 8,030 12m.., . 9.58 5,570 2.93 KQQ 4,690 2p.m...---.. 9.60 5,610 2.10 365 12 ..,- 8.86 4,130 2.07 May 31 12...... 3.29 April 83 8.16 2,920 10 7.60 2,370 7.82 2,550 7.65 2,410 12m-..- _ .. 7.89 2,610 5.10 6---. _ ...... 7.17 2,120 12p.m...... 8.60 3,660 12m- - 6.80 1,940 12 6.31 1,740 7.95 April 84 12 7.72 2,470 June 1 12m __ .... 8.45 3 dnn May 17 1,410 9 p.m...... 6.70 1,900 5.87 1,570 12 _...... 5.40 1,380 5.67 1 490 7.52 2,310 12m.- 2.67 12 8.37 3,260 April 85 12p.m _ ... . 1.32 167 JuneS 4 a.m...... 3.67 801 May 18 2 22 QQO 9.67 5,760 2 p.m...... 2.20 391 as as 9.77 5,980 8 - 3.80 840 1.25 152 12 9.66 5,740 12...... 5.85 1,560 1.35 174 10 1.02 106 June 3 April 26 12 1.78 282 9.64 5,700 4 a.m _ . .... 7.20 2,140 12m 9.90 6,290 8.43 10.23 7,150 8.53 3,530 2 QD 570 12 10.35 7,480 12 8.00 2,720 3 95 12m.. _ ---_ 5.65 1,480 June 4 April 87 7.69 2,370 1 9 8.62 10.26 7,230 6.54 1 840 12m...... 9.92 6,340 fi IW i s^n 8.90 7.60 2,370 12m-. 9.82 6,100 June 5 April 88 9.65 5,720 19 9.25 4,890 6 a.m _ ... 8.24 3,040 12m...... 8.67 3 790 12m 7.38 2,230 4,500 May 81 5.00 1,220 12 4 KQfl 8.20 2,980 June 6 April 89 12m..... 6.67 1,890 4 QC 1,160 12m. 3.38 714 12m...... 8.70 3,840 12 3.40 720 12 p.m. 3.73 819 8 48 3 AK(\ 12...... April 30 .46 21 9 a.m .- .... 2.50 469 12m-- 2.52 474 9.00 4,400 May 87 2.62 500 8 rn 3 d 80 19 2.53 477 .43 17 10 1.05 112 June 8 12m-..._ _ . 7.23 2,160 1.34 172 6.47 1,810 12m--. 1 9ft 158 12m.-- 2.01 342 12...... 6.31 1 ' 740 07 78 1.57 230 TEXAS AND ADJACENT STATES B271

183. FRIO RIVER AT CAMJHAM, TEX, Location. Lat 28°29'30", long 98°20'45", on right bank at upstream side of bridge on old Calliham-Whitsett Highway, 1 mile north of Calliham, McMullen County, and 9.7 miles downstream from San Miguel Creek. Drainage area. 5,491 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 153.47 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 8,700 cfs 3 p.m. June 3 (gage height, 27.00ft). 1924-26, 1932 to March 1957: Discharge, 70,000 cfs July 6, 1932 (gage height, 39.20 ft, from floodmark), from rating curve extended above 16,000 cfs. Maximum stage known since at least 1870, that of July 6, 1932; information from local resident. Remarks. Part of flow of Frio River and its headwater tributaries enters Edwards limestone in Balcones fault zone, which crosses basin just north of Uvalde.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 102 3,540 2,550 ll._-_ 9.4 1,580 710 21 3,250 2,510 102 2 503 3,660 5,690 12 9.0 976 354 22 2,390 1,150 70 3... _. 414 3,470 8,340 13 8.5 2,360 205 23 2,590 1,420 136 52 3,190 7, 420 14- 7.9 4,850 142 24 3,920 2,830 110 5 _ 23 2,360 5,000 15 6.0 3,210 108 25 3,390 2,610 165 6...... 16 1,680 4,340 16 5.4 1,380 85 26 3,790 1,310 91 7.., . 61 980 5,200 17-. 5.4 415 69 27 4,250 1,550 66 8 _ 37 298 5,600 18 5.4 598 57 28-... 4,210 4,420 50 9 . 22 851 3,370 19- _ 421 1,940 51 29 2,820 6,310 37 10 . 13 2,250 1,460 20 4,020 2,440 56 30. . 3,060 3,650 28 31. . 2,010

Monthly mean d ischarge, in cubic feet per 1,314 2,316 1,722 Runoff, In acre-f»et 78, 170 142, 400 102, 500

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

April 18 April 21 Con. April 24 Con.

12p.m...... 2.50 5.4 12m..... _ . 1 ft QO 3,000 12m.-- 19.79 4,130 13.34 2,220 18.80 3,780 10...... 12.90 2,110 12 18.04 3,510 4p.m...... 2.50 5.4 12 19 QR 2,130 5 ..... 5.00 480 6...... OKA Amrfl 99 8...... 9 00 1,310 17.64 3,390 10. 11.38 1,740 12m... -. 2,540 12m--. -- 17. 51 3, 350 12 . 13.13 -\A QQ 2,590 17.51 3,350 6 ... . U KQ 2, 520 17.63 3,390 12...... 13.02 2,140 12 17.80 3,440 17.52 3,360 12m...... 20.17 4,270 April 23 3 p.m...... 21.00 4,600 3 a.m...... 2,010 6. --...-.--. 21.52 4,860 5 _. 12.43 18.89 3,810 9 21.68 4,940 2,030 19.41 3,990 10:30...... 21.84 5,020 12m.____.__- 2,370 10- 19.52 4,030 12 21.68 3,090 19.51 4,030 12...... 18.70 3,740 April 21 April 27 21.67 4 940 April 24 3...... 21.22 4,710 1Q ftfl 4,130 19.48 4,020 6... _ ...... 19.92 4,170 9...... 19.97 4.190 4...... 19.53 4,040 B272 FLOODS OF 1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

Aprils-Con May 9 May 17 Con 7a.m. ______19.90 4,160 12m...... 3.58 136- 6p.m_. ______4.53 386 10.___. ______19.94 4,180 3.55 129 12 5.09 496 12m. _.__.... 20.08 4,230 6 .. 6.60 768 4pm ____ . 20.44 4,380 7 . 8.90 1,210 May 18 12 20.69 4,480 g 14.50 2,500 9- .... 18.40 3,640 5.42 556 April 88 10. . 19.30 3,960 12m... . 5.60 588 11 . - 19.15 6 a.m. ___ .. 3,900 8 p.m.... __ . 5.85 633 20.68 4,470 12 . 18.55 3,690 Q 6.00 660 12m...... 20.47 4.390 12 ______6.90 822 19.55 4,040 May 10 12 - 17.78 3,430 May 19 16.05 2,920 April 89 8...... 13.35 2,220 10.10 1,450 12m... _ 11.67 1,810 12m..____ ... 12.55 2,020 6 a.m ______16.05 2,620 2 p.m. __...._ 11.45 1,760 6 p.m.. 14. 43 2,490 g 15.47 2,750 4 ...... 11.54 1,780 15.62 2,790 12m. ______15. 16 2,670 8- ..___ _ 12.20 1,940 4p.m__ 15.03 2,640 12 ,. .. 12.64 2,040 May 30 8 _ __-.__ _. 15.08 2,650 12 ___-.-_ _ 15.28 2,700 Man 11 15.63 2,790 2. . .. 15.52 2,760 April 30 2 a.m... ______12.65 2,050 6- ______14.62 2,540 4 _____ ... 12. 59 2,030 g 13.92 2,360 6 a.m ______15.90 2,870 8____._. ______12.35 1,970 12m_____ ... 13.59 2,280 12m. ______16.64 3,090 12m.__ ... 11.30 1,720 2 p.m.., __ . 13.54 2,260 17.20 3,260 8.40 1,110 6. 13.75 2,320 12 17.60 3,380 12 7.27 889 12... _ - 14.30 2,460 May 1 May 18 May 81 12m._._ __ . 18.08 3, 530 3a.m_._._ ___ 7.19 874 9 a.m.. __ . 14.91 2,610 18.57 3,700 6. -_-___--____ 7.33 899 12m...... 14.95 2,620 12 m_.______7.80 990 14.88 2,600 May 3 8.09 1,050 14.65 2,540 8.18 1,070 g 14.08 2,400 4 a.m... ------18.65 3,730 9 ...... 8.14 1,060 12 12.80 2,080 18.59 3,710 12 7.79 988 18.44 3,650 May i8 18.17 3,560 May IS 9.20 1,270 MayS 4 a.m...... 6.70 786 g 8.05 1,040 8 5.35 543 12m__ ___ 7.52 934 12m-..- _ .. 17.86 3,460 10 . 7.60 9PO 4p.m.__ ...__ 7.35 903 17.62 3,390 12m.... -_ 12.50 2,010 8 ___ 7.44 919 2 p.m., ..... 16.00 2,900 12 7.72 974 May 4 17.90 3,470 8 20.80 4,520 May S3 6 a.m.... ______17.47 3, 340 1*4 21.31 4,760 12 m-. _-__-- 17.15 3,240 12 .- 21.42 4,810 6 a.m __ _ .. 8.57 1,140 16.60 3,080 12m__. _ ... 9. 82 1,390 12 15.76 2,830 May 14 11.10 1,670 12 12.45 2,000 May 5 6a.m_.______21.40 4,800 12m._... ____ 21.47 4,840 May 84 12m 13.89 2,350 21 65 4,920 12p.m-_ . _ 12. 13 1,920 12 21.57 4,880 14.42 2,480 12 m..______16.22 2,970 May6 May 15 17.16 3,250 g 17.27 3,280 6a.m___... _ 11.34 1,730 6a.m. ______20.05 4,220 12...... 17.15 3,240 12m___ 11.15 1,690 16.35 3,000 6 p.m.______10.81 1,610 13.40 2,230 May 85 12 10.17 1,470 12 ______12.14 1,920 16.69 3,110 May 7 May 18 8_ 15.90 2,870 12m___ 14.97 2,620 12m___. _ __ 7.68 966 6 a.m____. _ 11.48 1,770 6 p.m.... _ 13.42 2,240 5.20 516 10.28 1,490 12p.m.. ______11.97 1,880 7.85 1,000 MayS 12____ 5.63 593 May 26 4 a.m __ __ 4.68 416 May 17 12m___ __ ._ 9.18 1,270 8___._ ___ _. 4.30 335 6.95 831 12m______4.07 271 6a.m... _____ 4.62 404 4 p.m.. ______3.91 223 4.30 335 May 87 12 ______3.74 175 2 p.m __ _ _ 4.28 330 5a.m.. ______6.03 665 TEXAS AND ADJACENT STATES B273

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May 87 Con. June 1 June B Con. 10.90 1,630 10.56 1,550 20.23 4,290 13.08 2,150 3...... 1,570 12 19.92 4,170 9 13.63 2,290 6.- ...... 11.05 1,660 12 15.07 2,650 9...... 11.88 1,860 12 m...... 13. 0& 2,140 14.70 2,560 19.86 4,150 6 ...... 17.45 3,340 6 ...... 19.92 4,170 18.20 3,570 9...... 20.00 4,200 12m...... 20.23 4,290 12m...... 20.60 4,440 12...... 21.00 4,600 20.66 4,460 22.35 5,310 12...... 21.24 4,720 23.55 6,030 June 7 21.76 4,980 12m...... 22.74 5,540 12m...... 22.20 5,220 24.39 6.570 24.03 6,320 12 p.m... 22.92 5,650 9 . 24.65 6,760 12 ...... 25.28 7,220 24.72 24.69 6.780 3. - ...... 24.53 6,670 23.07 5,740 6...... - 2?, 95 26.10 7,890 9 ...... 23.15 5,790 21.75 4,980 8-...... 26.65 8,380 12m... 23.11 5,770 12m_.__.- ... 26.95 8,660 4p.m...... 22.89 5,630 8,700 8 - 22.46 5,380 6...... 26.96 8,660 12 21.72 4,960 19.35 3,970 12.. . _ _ _ .. 26.69 8,420 12m... -. 18.07 3,520 June 9 17.15 3,240 12. 1 ^ Af\ 19.70 4,100 26.25 8,020 12m...... 17.28 3,280 May SI 12m,... .. 25.60 7,480 6p.m...... 14.78 2,580 23.86 6,220 12...... 12.90 2,110 13.63 2,290 12m _ .... 12.20 1,940 11.15 1,690 9 10.75 1,600 12 m...... 21.60 4,900 12m. . ----- 9.80 1,390 12 10.57 1,560 20.78 4,510 12 p.m. ..---. 7.67 964

184. ATASCOSA RIVER AT WHTTSETT, TEX. Location. Lat 2S°37'20", long 9S°17'05", on right bank 1,400 ft upstream from bridge on Farm-to-Market Road 99, 0.9 mile west of Whitsett, Live Oak County, and 4 miles downstream from La Parita Creek. Drainage area. 1,171 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 159.04 ft above mean sea level, datum of 1929. Discharge record. Stage-discharge relation denned by current-meter measure­ ments. Maxima. April-June 1957: Discharge, 8,410

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 522 2,500 876 11 13 2,850 84 21 5,680 994 7. 2. 1,020 661 1,840 12..... 13 2,020 72 22.. ... 3,190 194 6' 3.. __ 431 176 2,220 13..... 12 1,990 64 23 2,410 124 5' 4 ___ . 91 102 1,640 14..... 12 3,140 60 24 2,080 99 4: 45 76 755 15 11 3,380 57 25 354 85 4: 6...... 27 66 453 16..... 13 1,190 54 26 541 76 3. 7. ... 20 59 323 17 _ .. 221 196 51 27 1,390 336 3' 8 _ . _ 17 54 164 18. _ . 412 170 50 28 - 4,170 2,140 2'21 9 _ . ... 15 503 210 19..... 500 1,000 48 29 5,670 7,070 10...... 14 2,380 124 20 3,590 2,100 47 30 3,750 5,030 2, 31 1,540

Monthly mean c ischarge, in cubic feet per 1,208 1,365 32 Runoff, in acre-fc>et 71, 870 83,900 19, 08i

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 195"/

Hour Gage Discharge Hour Gage Discharge Hour Gage Dischargt height height height

April 16 April m May 1 4.14 13 2,490 22.60 2,99( 12m...... 2,320 21.03 2,43( April 17 1,810 20.09 2, 15( 9 ...... 16.81 1,410 12 17.55 1,55( 4.23 16 12 13.89 935 7 . 4.48 8 ...... - 5.30 58 9 100 15.25 1,14( 12m __ . .... 7.68 8 12.90 79f 9.05 340 6 ...... - 7 SO 229 I2m._...... 10.48 4s: 9-...... 10.28 466 9 7.22 183 6 p.m...... 8.70 30- 12...... 10.63 KAC 7 IQ 179 12 244 8.17 269 April 18 6 ...... 8.82 337 May 8 12--.- ...... 10.49 525 10.70 52 6 ...... 12m...... 10.07 443 May 9 9.28 363 11.04 607 12... __ ----- 7.23 183 556 12m... 5.24 5C 10.03 482 5.25 51 10.29 513 6 - 8.50 281 7- 15.52 1, 18C e Qfi 94 A frvrM 9"} 1,770 9 .... 6.80 149 10 2,410 12m..._. ... 335 533 12 20.40 2,240 3p.m...... 11.50 615 3 ...... - 11.08 613 6 13.40 866 5 - 968 May 10 12 16.05 1,280 7 15.44 1,210 Q 15.62 1,240 20.24 2,190 16.87 1,450 5 . 20.52 2,280 1,770 9- 20.91 2,390 1017 1 fton 19 20.26 20.94 2,400 12 m__ _ . ... 21.80 20.90 2,390 4 rnn A ^rj"7 P8 12 21.52 2,590 8...... 26.60 6,480 12...... 27.18 2,830 May 11 12m...... 24.50 4,120 5,420 12 m_- 22.35 2,890 19 6,400 22.65 3,010 7 dfifi 12 -, 22.42 2,920 6 ...... 26.81 12m. __ . ... oe on May 12 12p.m ...... 24.27 3,950 26.63 6,530 7 ..... 26.52 6,360 6 a.m.- ...... 21.28 2,510 5,740 12 m_- ...... 19.62 2,020 4,370 17.50 1,540 12 m...... OQ 1 7 14.93 1,090 12 p.m...... 22.36 April 23 April 30 May 13 12m ___ .... 9 9Afi 23.79 3,620 12.36 727 3, 530 8 9.37 372 12...... 21.45 2.440 12 - 23.33 3.350 9 13.40 866 TEXAS AND ADJACENT STATES B275

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957- Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May IS Con. May 20 Con. May SI Con. 18.00 1,640 19.20 1,910 13.58 891 11.. .. _ .... 20.80 2,360 11.73 645 12 m 22.25 2,850 10...... 11.20 579 22.88 3,100 12 11.45 608 L_. ______22.18 2,820 16.63 1,380 22.15 2,810 12m-- 13.84 L0_____ ...... 22.75 3,050 11.15 566 12--..-.-. 22.87 3,100 12 8.70 304 12.49 744 12m 806 May 14 14.12 968 12 16.52 1,360 3,100 11 ____ . .___ 22.46 2,930 12m. 7.20 178 2 Q4.O 18.20 1,680 12 23.91 3,700 12m - . 19.08 1,880 2,060 May 15 5.73 77 12 .- 19.94 2,100 24.17 3,880 May 27 12m.- 23.78 3,620 22.55 2 Q7ft 80 19.96 2.11.1 19 20.83 2,370 10 __ __ . _ 5.75 78 8_. .---_. _____ 2, WO 6.18 103 12m _...... 20.54 2,280 2,330 4...... 10.75 516 12 . 20.11 2,150 18.50 1,750 9 ...... 12.85 787 12m--_. ._ 15.23 1,140 12 14.58 1.030 June 4 11.05 556 12 8.43 9Sd 19.06 1,880 12m May 17 17.50 1,540 17.37 1,520 6._ __ -__ __ 16.70 1,390 7.20 181 21.60 12 15.18 1,130 6.68 140 12 24.00 June B May 18 May #9 10 a.m._ ..... 6.41 121 26.64 6,540 12m...... 12.16 698 6.43 122 12m 97 ^O 11.31 588 7.27 187 27.73 8,410 12 . 11.01 549 12 9.17 9 27.54 8,070 12 27.24 7,530 534 10.63 502 12.20 706 9.35 367 12m.- _ .. 14.30 995 26.41 6,190 9.. -. _ _ . 8.76 311 4,830 12 8.54 290 12 17.95 1,630 24.12 3,840 12 22.57 2,980 8.75 309 19.67 11 9.24 355 12m ' 20.30 9.33 364 20.93 2,400 20.58 2,290 8 ___ - _ -- 8.93 325 7 ...... 2,270 12m 12 8.13 253

185. NUECES RIVER NEAR THREE RIVERS, TEX. Location. Lat 28°26'10", long 98°11'10", on left bank 100 ft downstream from San Antonio, Uvalde & Gulf (Missouri Pacific) Railroad bridge, half a mile downstream from Frio River, 2 miles south of Three Rivers, Live Oak County, and at mile 103. Drainage area. 15,600 sq mi. Gage-height record. Water-stage recorder graph except 3 p.m. June 26 to 12 p.m. June 30, for which graph was drawn on basis of staff-gage readings made once daily. Datum of gage is 101.13 ft above mean sea level datum of 1929, Houston supplementary adjustment of 1943. Discharge record. Stage-discharge relation defined by current-meter measure­ ments. B280 FLOODS OF 1957

Gage height, in feet, and discharge, in cubic feet per second, at indicated time, 1957 Continued

Hour Gage Discharge Hour Gage Discharge Hour Gage Discharge height height height

May 28 Con. May 31 Con. June 4 25.70 10, 400 25.20 9,700 28.35 17, aw 5...... 25.75 10,500 9.... .__ 25.63 10, 300 12 m...... 28.37 17, m 10. - 25.72 10, 500 12 25.79 10,600 12 p.m... .__. 28.48 17, OK 12 __ ... _ .. 25.63 10, 300 June 1 June 5 May 29 26.02 10, 900 28.60 18, (XK 25.19 9,680 12 m...... 26.13 11, 200 12m... _ ... 28.75 18.50C 12m...... 24.50 8,900 26.12 11,200 12 p.m...... 28.75 18.50C 23.79 8,230 27.16 13, 500 12 23.33 7 860 12 15, 300 May 30 12m ____ .. 28.72 18,400 12p.m.. .____ 28.60 18,000 6 a.m___, ..... 23.07 7,660 27.94 15, 800 12m... 22.87 7,500 12m...... 28.56 17, 800 6 p.m...... 22.71 7,370 28.86 18,800 12.. . 22.84 7,470 12 28.85 18,800 12m...... 28.34 17, 100 28.09 16,300 May 31 JuneS June 8 23.07 12 m...... 23.48 7,980 12 m...... 28.58 17,900 12m. __ .... 27.83 15,500 2p.m... _____ 23.77 8,220 28.36 17,200 12 p.m.. _____ 27.63 14,900

BIO GBANDE BASIN 188. PECOS RIVER NEAR GIRVTN, TEX. Location. Lat 31°07', long 102°25', on right bank 2.4 miles upstream from Comanche Creek, 2.6 miles northwest of Girvin, Pecos County, and 7.8 miles upstream from bridge on U.S. Highway 67. Supplementary gage at bridge on U.S. Highway 67. Drainage area. Approximately 29,560 sq mi; contributing area of supplementary gage 7.8 miles downstream. Gage-height record. Water-stage recorder graph except May 30. Record for supplementary gage used Apr. 19, 20, 25, 26, May 1. Graph for Apr. 20 drawn on basis of recorder graph for base gage. Datum of supplementary gage is 2,269.65 ft above mean sea level, datum of 1929. Discharge 'record. Stage-discharge relation defined by current-meter measure­ ments. Discharge for May 30 estimated on basis of recorded range in stage. Maxima. April-June 1957: Discharge, 3,800 cfs 3 a.m. Apr. 26 (gage height, 14.55 ft, at supplementary gage). 1939 to March 1957: Discharge, 20,000 cfs Oct. 5, 1941 (gage height, 20.49 ft, at supplementary gage). Maximum stage known since at least 1932, that of Oct. 5, 1941. Remarks. Flow largely regulated by reservoirs above Orla. TEXAS AND ADJACENT STATES B281

Mean discharge, in cubic feet per second, 1957 ... Day April May June Day April May June Day April May June

1 . 34 30 93 11 30 22 21 21 81 44 18 2 .. 33 26 59 12 30 27 22 22..... 37 40 17 3 ... 31 25 44 13 30 28 20 23 39 40 16 4 33 24 37 14 30 25 21 24 30 52 17 5 _ 32 23 46 15 31 21 21 25 602 34 16 6 31 22 44 16.. ... 28 20 21 26 2,240 26 17 7 31 22 33 17 26 21 20 27 38 33 15 8 .. 31 23 28 18 25 390 20 28. __ 51 51 15 9. 31 23 24 19 243 92 ]9 29 39 39 22 10 31 23 22 20 291 63 19 30 36 42 22 31 103

Monthly mean c ischarge, in cubic feet per s 142 46.9 27.0 Runoff, in acre-fc et 8,480 2,880 1,600

189. PECOS RIVER NEAR SHUMLA, TEX. Location. Lat 29°49', long 101°25', about 4 miles northwest of Shumla, Va1 Verde County, 13 miles upstream from Pecos High Bridge of the Southern Pacific Railroad and, 18.5 miles above mouth. Drainage area. 35,162 sq mi (contributing area). Gage-height record. Water-stage recorder graph. Datum of gage is 1,159.52 ft above mean sea level, U. S. Coast and Geodetic Survey datum. Discharge record. Furnished by International Boundary and Water Commission. Maxima. April-June 1957: Discharge, 38,400 cfs 10:40 p.m. May 10 (gage height, 22.22ft). 1898, 1900 to March 1957: Discharge, 948,000 cfs June 27, 1954 (gage height, 121.7 ft), by slope-area measurement at gaging station near Comstock, Tex., 13 miles downstream. Remarks. Records furnished by International Boundary and Water Commission.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 .... 142 1,240 1,840 11 123 3,550 554 21 ..... 147 983 482 2 132 863 1,240 12 1,720 2,240 544 22 155 912 465 3 134 673 1,030 13 1,150 22,100 1,180 23 144 859 454 4...... 127 553 902 14 325 11,300 1,290 24 142 810 458 5 127 472 842 15 253 2,360 745 25 280 753 429 6 126 393 795 16 208 1,230 634 26 336 1,000 419 7 124 327 743 17.---. 182 1,040 574 27 396 5,850 404 8 127 297 697 18 260 5,470 532 28 2,320 3,910 390 9. -. 121 268 647 19 388 7,070 567 29 7,130 1,460 376 10 121 3,940 598 20 158 1,720 613 30 . 3,030 1,300 362 31. . 2,430

Monthly mean c ischarge, in cubic feet per s 671 2,818 694 Runoff, in acre-fe et 39,920 173, 300 41, 270

190. DEVILS RIVER NEAR DEL RIO, TEX. Location. Lat 29°29', long 101°00', at bridge on U.S. Highway 90, 4.5 miles upstream from mouth and about 12 miles northwest of Del Rio, Val Verde County. Drainage area. 4,185 sq mi. Gage-height record. Water-stage recorder graph. Datum of gage is 951.80 ft above mean sea level, U.S. Coast and Geodetic Survey datum. 656087 O 62 19 B282 FLOODS OF 1957

Discharge record. Furnished by International Boundary and Water Commission. Maxima. April-June 1957: Discharge, 50,700 cfs 3 p.m. May 13 (gage height, 9.95 ft). 1900-1914, 1923 to March 1957: Discharge, 597,000 cfs Sept. 1, 1932 (gage height, 36.60 ft). Remarks. Records furnished by International Boundary and Water Commission.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 -- 299 816 15, 500 11 -. 130 15, 300 614 21 .. 179 1,290 541 2...... 101 592 2,800 12. . 208 9,700 614 22..... 202 903 529 3...... 107 512 1,280 13 416 30,800 603 23..... 587 746 526 4 193 477 939 14 174 21, 000 592 24..... 163 679 514 5 . 146 424 803 15 152 2,870 583 25..... 216 648 511 6...... 142 309 745 16. . 174 1,300 573 26 .. 181 668 508 7 .... 149 351 699 17 176 1,560 563 27 267 22, 700 478 8 165 348 678 18 238 7,070 612 28 2,360 18, 000 494 9 .... 102 380 646 19 748 17, 700 591 29 3,520 2,410 482 10.-..-. 140 500 624 20 195 3,370 544 30..... 1,630 1,170 470 31..... 3,850

Monthly mean c ischarge, in cubic feet per £ 449 5,434 1,189 Runoff, in acre-fe et 26, 700 334, 100 70, 720

191. RIO GRANDE AT LAREDO, TEX. Location. Lat 27°30', long 99°30', 0.9 mile downstream from international highway bridge between Laredo, Webb County and Nuevo Laredo, Tamaulipas, Mexico, and at mile 357.4. Drainage area. 135,976 sq mi (contributing area), of which 85,718 sq mi are in the United States and 50,258 sq mi are in Mexico. Gage-height record. Water-stage recorder graph. Datum of gage is 347.90 ft above mean sea level, U.S. Coast and Geodetic Survey datum. Discharge record. Furnished by International Boundary and Water Commission. Maxima. April-June 1957: Discharge, 64,700 cfs 10 a.m. May 30 (gage height, 22.05ft). 1900-1913, 1922 to March 1957: Discharge, 716,900 cfs June 30, 1954 (gage height, 61.35 ft). Flood of June 1865 reached a stage of 62.5 ft (discharge, about 950,000 cfs). Remarks. R.eoords furnished by International Boundary and Water Commission.

Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 ... . 632 34,400 11,000 11 463 3,370 3,670 21..... 11,500 33,300 4,340 2 639 13,200 30, 200 463 7,350 3,470 22 .. 4,350 13, 800 3,180 3 1,750 7,310 36, 000 10 413 40. 300 3,430 23 19, 700 7,130 2,630 4 1,110 5,160 13, 400 742 38.100 3,530 24 7,060 5,230 3,000 5 766 4,340 8,090 1 K 6,000 38, 800 3,100 25 3,130 4,240 3,470 6 .... 632 3,880 6,500 3,280 51,600 2,910 26 2,840 3,740 2,860 7.. --._ 533 3,430 5,370 2,220 25,200 3,570 27 26, 200 29,300 2,510 8 533 3,200 4,630 1C 1,520 41, 700 3,140 28 37, 800 56, 500 2,260 9. ... 533 3,000 4,340 19 1,170 39,600 2,770 29 29, 800 49,400 1,890 10 463 5,300 3,960 20...-. 18, 600 34,300 3,880 30..... 49,100 58,300 1,750 16, 500

Monthly mean discharge in cubic feet per 7,798 21, 967 6,162 Runoff, in thousands aen -feet 464.0 1,351 366.6 TEXAS AND ADJACENT STATES B283

192. INTERNATIONAL FALCON RESERVOIR 'Location. Lat 26°33', long 99°10', on Rio Grande, 19.6 miles upstream from Roma, Starr County, Tex., 84.5 miles downstream from Laredo, Tex., and Nuevo Laredo, Tamaulipas, Mexico, and at mile 273.8. Drainage area. 164,482 sq mi (contributing area) of which 87,760 sq mi are in the United States and 76,722 sq mi are in Mexico. Gage-height record. Water-stage recorder graph. Datum of gage is at mean sea level, U.S. Coast and Geodetic Survey datum. Maxima. April-June 1957: Contents, 1,973,900 acre-ft June 27, 30 (elevation, 290.01 ft). 1953 to March 1957: Contents, 2,423,000 acre-ft Nov. 14, 1954 (elevation, 296.18 ft). Remarks. During the period April-June 1957, there was no flow over the spill­ way; however, 401,000 acre-ft of water was released during this period. Dam is a compacted earth and rock-fill structure, 26,294 ft long, with a 350-foot reinforced concrete spillway having six 50- by 50-foot fixed wheel gates. Per­ manent storage began Aug. 25, 1953. Capacity at top of spillway gates, 3,349,000 acre-ft. Figures are rounded to the nearest 100 acre-ft. Records furnished by International Boundary and Water Commission.

Elevation, in feet, and contents, in acre-feet, at 12 p.m. of indicated day, 1957

AI>ril May June Day Elevation Contents Elevation Contents Elevation Contents

1 .... _ -. .- ... _ ... 265. 36 743,600 286.93 1,773,000 2 ...... 245.26 258, 200 266. 35 778, 300 287. 91 1, 835, 300 3 - _ --.____.____-._ 245. 27 258, 300 266. 83 795, 400 288.92 1, 901, 100 4-...... _...... 245. 30 258, 800 267. 13 806,300 289.42 1, 934, 300 5...... 9i>; v* 810, 700 289. 54 1, 942, 300 6... - ...-_ -_____._____. 245. 37 259,800 267. 45 818,000 289. 54 1,942,300 7...... ____ -. 245. 45 261, 000 267. 62 824, 300 289.52 1,941,000 8~ . _ . . 245.49 261,600 267. 75 829, 100 289. 51 1, 940, 300 9 ...... 245.51 832,800 289. 54 1, 942, 300 10...... 245.57 836,900 289. 55 1,943,000 11 ...... -.-.-_-.. 245.60 263, 200 268.08 841,400 289. 52 1,941,000 12 ...... 94K fio 268 19 845,500 980 40 1,939,000 13 ...... OJK fid. 263,800 890,900 289. 46 1, 937, 000 14...... 94^ fid. 263, 800 289. 42 1,934,300 15...... OJK QA 266, 800 979 ^ 1, 019, 500 289. 37 1, 931, 000 16...... 246. 41 275,600 274. 32 1, 097, 600 289.34 1, 929, 000 17...... 246. 78 281,400 275. 48 1, 150, 700 289. 27 1, 924, 300 18 247. 01 285, 100 276. 67 1, 207, 000 289.38 1,931,600 19 . 247. 25 289,000 277.60 1, 252, 300 289. 52 1, 941, 000 20...... 247. 96 300,700 278. 73 1, 308, 700 289.65 1, 949, 700 21 ...... 249 87 334,200 279. 74 1, 360, 600 289. 74 1, 955, 700 22...... 250.44 344,800 280.19 1, 384, 100 289. 82 1, 961, 100 23 ...... 251. 20 359,400 280.11 1,379,900 289. 87 1, 964, 500 24 . . OKO 70 onn 7f\n 97Q SS 1, 367, 900 OQQ Q9 1, 967, 900 25...... O CO QA 395,200 279 60 1, 353, 300 1, 970, 600 26 253. 08 398,200 279. 33 1, 339, 400 290.00 1,973,300 27...... OKJ. AH J.9Q onn oQft n^ i ^7fi son 1,973,900 28 . OK.7 QA OQO qe 290.00 1, 973, 300 29 260.46 984. 1Q 290.00 1,973,300 30 ...... 262.88 661,100 286.00 1, 715, 200 290.01 1,973,900 31 286.68 1, 757, 300 Change in contents, acre-feet. . +402, 500 + 1,096.200 +216, 600 B284 FLOODS OF 1957

193. RIO GRANDE AT CHAPENO, TEX. Location. Lat 26°32', long 99°09' at Chapeno, Starr County, 2.5 miles down- I stream from Falcon Dam, 9.9 miles upstream from Rio Alamo, and at mile ', 271.3. Drainage area. 164,538 sq mi (contributing area) of which 87,762 sq mi are in the United States and 76,776 sq mi are in Mexico. Gage-height record. Water-stage recorder graph. Datum of gage is 171.52 ft above mean sea level, U.S. Coast and Geodetic Survey datum. Discharge record. Furnished by International Boundary and Water Commission. Maxima. April-June 1957: Discharge, 13,100 cfs 3 a.m. May 26 (gage height, 7.35 ft). 1952 to March 1957: Discharge, 22,600 cfs Aug. 27, 1953 (gage height, 7.98 ft). Remarks. Flow regulated by International Falcon Reservoir (capacity, 3,349,000 acre-ft). Records furnished by International Boundary and Water Commis­ sion. Mean discharge, in cubic feet per second, 1957

Day April May June Day April May June Day April May June

1 . ... 576 6.2 9,380 11. . 3.8 518 3,080 21 1,590 7,310 727 2...... 625 5.1 2,590 12..... 4.1 926 2,960 22..... 102 8,170 623 3. ... 660 4.9 38 13..... 169 909 3,070 23..... 464 9, 12C 610 4 660 4.7 2,210 14 620 1,290 4,320 24 44 10, 400 776 5 . 670 3.9 7,380 15 .. 96 2,540 4,320 25 680 11, 300 837 6 _ 104 106 6,610 16..... 9.6 4,320 4,690 26 1,670 13,000 753 7 . 9.6 109 7,140 17 6.2 5, 120 3,540 27. . 2,630 4,830 691 8 . 5.9 305 4,850 18..... 4.6 5,880 2,830 28 ._ 615 41 713 9 - 3.8 406 3,010 19 4.5 9,520 495 29 342 18 697 10 3.8 411 2, 730 20 4.6 8,230 620 30 15 19 646 31 4,700

Monthly mean c ischarge, in cubic feet per 413 3,530 2,770 Runoff, in acre-ft et 24,600 217,000 165, 000

SUMMARY OF FLOOD STAGES AND DISCHARGES Maximum stages and discharges at stream-gaging stations and at miscellaneous points on streams in the area covered by this report are summarized in the following table. The reference numbers in this table correspond to those in figures 11 and 12 and aid in identifying the sites at which peak discharges were determined. Peak discharges at gaging stations were computed from stage-dis­ charge relations, which are a part of the station record. Peak dis­ charges at a few miscellaneous places were obtained by indirect methods, as noted under the section on "Determination of flood discharges." The first column under "maximum floods" shows the period of known floods before April 1957. This period does not necessarily correspond to that in which continuous records of discharge were obtained, but in many cases it extends back to an earlier date. More than one period of known floods are shown for some stations. Periods are shown where they can be associated with a maximum stage, even TEXAS AND ADJACENT STATES B285

! though the corresponding discharge may not be known; a second period of known floods is then given in which the maximum discharge and stags are both known. The second column under "maximum floods" shows the year in which the maximum stage or discharge occurred. The third column under "maximum floods" gives the date of the maximum stage or discharge during the flood period April-June 1957.

Summary of flood stages and discharges

Maximum floods

Drainage Prior to April 1957 Discharge No. Stream and place area of determination (sq mi) April-June Gage 1957 height Cfs Period Year (feet) Cfs per sq mi

Arkansas River basin

1 Canadian River near i 19, 455 1914 1914 24.0 . (?) Amarillo, Tex. 1924-25, 1941 15.7 135,000 8.8 1938-57. May 24. __ . 12.82 66,900 34.4

Red River basin

?, i 1, 566 1905-6, 1938 14.7 60,000 344.2 at Mangum, Okla. 1937-57. May 16-- 14.55 72,000 353.1 3 i 4,244 (') 16.1 (2) 1905-8, 11.50 30,700 38.6 rick, Okla. 1937-57. 9.36 20,100 35.2 4 Cache Creek near 675 1938-57 1951 29.72 28,200 41.8 ~May~26."IIII 28.80 15,000 22.2 5 617 1908-57 1908 27+ (2) 1949-57 . 1951 27.10 20,300 32.9 23.74 8,050 13.0 6 1922-57 1941 5420.9 May 21. - 1, 147. 8 5390.9 7 i 3, 140 1915-57 (2) 50,000 15.9 1938-57 1941 24.0 17,800 7,200 18.60 8 563 1889-1957- 22.7 65,300 116 May 26-- 21.82 22,500 40.0 9 275 1946-57- 1950 s 134. 3 May 19 6 1, 046. 8 « 117. 9 10 Little Wichita River 1.037 21 (2) near Henrietta, 1953-57 1953 17.91 5,890 5.7 18.36 6.390 6.2 11 i 28, 723 1941 28.12 197,000 38.6 22.72 110, 000 34.8 1? i 30, 782 1936-57 168.000 36.8 Gamesville, Tex. ... do - 1951 26.53 25.14 102, 000 4.1 13 Washita River near 7.202 1928-57 1941 44.37 ""in'sOO"" "l2~7 ... do . 1943 42.30 98,000 13.6 14 i 39, 719 1942-57 - 1945 6 629. 07 5 1 4, 295. 0 6 643. 18 5 5, 991. 3 15 i 39, 777 1908-57- 1908 45.5 (2) 1923-57 1935 201,000 5.9 do .... 1942 32.0 ~~ 1627666"" 26.26 16 i 44, 531 1905-57 - 1908 43.2 400,000 3 10.4 28.35 136, 000 17 i 48, 030 1936-57 . 1938 34.25 297,000 37.1 Ark. June 8-. 29.3 154,000 See footnotes on page 294. B286 FLOODS OF 1957

Summary of flood stages and discharges Continued

Maximum floods

Drainage Prior to April 1957 Discharge No. Stream and place area of determination (sq mi) April-June Gage 1957 height Cfs Period Year (feet) Cfs per sq mi

Red River basin Continued

18 Red River at Fulton, 1 52, 380 1927-57 1938 338, 000 37.3 Ark. ...do ... . 1945 37.4 31.12 228, 000 Sulphur River near 1,365 1908-57. 1908 27.5 (2) Talco, Tex. 1914, 1957 22.28 13. 100 9.6 April 27-. 23.63 32, 900 24.1 Texarkana Reservoir 3,443 near Texarkana, June 12 ...... 6 250. 34 s 1, 698 Tex. Sulphur River he- low Texarkana May 6..- .... 6 216. 06 Reservoir, near May 25- 25, 700 Texarkana, Tex. Posten Bayou near 1956-57. _ 1957 6 194. 02 Wardview, La. April 28 « 196. 70 Cypress Creek near 1853-1957- 1945 8 28. 78 57, 100 67.2 Jefferson, Tex. April 27 __ - 6 205. 61 16, 000 18.8 Caddo Lake near 2,744 1921-57 __ 1945 17.3 5 745. 5 Mooringsport, La. 14.4 5 goo 7 Kelly Bayou near 116 1944-57 1945 1,800 15.5 Hosston, La. do 1945 16.23 April 29 __ -. 1,720 14.8 April 29-. ... 17.23 Black Bayou near 6,270 17.2 Gilliam, La. do 1945 25.73 April 29 8,200 23.32 Twelvemile Bayou 3,137 1942-57- 1945 35.65 34, 900 11.1 near Dixie, La. ~I95.V57~"I ~1956~ May 4--.. ... 32.59 26,100 8.3 Paw Paw Bayou 78 10.75 2,820 36.2 near Greenwood, April 28 11.24 3,750 48.1 La. Red River at i 60, 613 1849-1957- . 1849 45.9 (2) Shreveport, La. 1938-57 1945 do 1945 38.4 230,000 33.91 Bayou Dorcheat 1928-31, 22.95 36.5 near Minden, La. 1936-57. May 2_ ...... 22.12 23, 100 21.1 Bayou Bodcau near 546 1905 1905 27 (2) Sarepta, La. 1938-57 1940 22.16 12, 600 23.1 ~Aprif28 8,890 16.3 April 29 20.48 Bayou Bodcau Reser­ 683 1949-57 1953 6 187. 01 « 157. 2 voir near Shreve­ May 10--- 6 184. 44 5 129. 8 port, La. Cypress Bayou near 91 1956-57. 1957 8.26 396 4.4 Benton, La. April 28 15.08 8,130 89.3 Red Chute Bayou 925 1933 1933 33.1 near Shreveport, 1939-57..-. 1941 31.1 La. 26.31 Loggy Bayou near 2,628 1948-57 1953 43.95 « 20, 000 Ninock, La. 47.08 May 15-- 17,000 Saline Bayou near 1,382 1945 1945 43.6 (2) Clarence, La. 1949-57 1953 40.46 14,200 38.08 June 29 . 6,980 Red River at Alex­ 45.23 233, 000 andria, La. 197, 000 40.70

See footnotes on page 294. TEXAS AND ADJACENT STATES B287 Summary of flood stages and discharges Continued

Maximum floods

Drainage Prior to April 1957 Discharge No. Stream and place area of determination (sq mi) April-June Gage 1957 height Cfs Period Year (feet) Cfs per sq mi

Sabine River basin 3 8 Sabine River near 965 1900-57 1943 25.7 (2) Emory, Tex. 1952-57 1953 20.28 34, 400 35.6 3 "1945" April 27 25.06 74,000 76.7 9 Lake Fork Sabine 586 "1895^1 957- I 29.85 75, 600 129 River near Quit- April 28 20.38 17,800 30.4 4 man, Tex. 0 Sabine River near 2,846 1914-57 - 1945 44.16 138, 000 48.5 4 Gladewater, Tex. 40.35 58, tOO 20.7 1 Sabine River at 4,858 1884-1957- 1945 10 44. 07 92,000 18.9 Logansport, Tex. m 39. 41 61, 800 12.6 42 Sabine River below 7,547 1860-1957_- 1884 35.9 (2) Toledo Bend, near 1955-57 1956 17. 73 14, 800 2.0 Burke ville, Tex. May 15---.-- 32.43 52,900 7.0 43 Sabine River near 9,440 1884 22.2 (2) Ruliff, Tex. 1924-57 - 1953 19.98 121, 000 12.8 May 20, 21... 15.96 53,800 5.7

Neches River basin

44 1,129 1884-1957- 1908 24.3 (2) 1939-57 1945 22.07 45, £00 40.3 17.80 15, £00 14.0 45 3,539 1884-1957- 1884 34.9 62,000 17.5 May 3-- . 29,700 8.4 25.34 46 382 1885-1957- 1908, 20 (2) Jacksonville, Tex. 1913 1939-57 1944 14.09 23, 400 61.3 10.12 7,040 18.4 47 1,630 1884-1957- . 1884 26.5 (2) Lufkin, Tex. 1923-34 - 1932 """I8.~55~ 38, 200 23.4 1939-57--. 1944 15.92 19,900 12.2 48 502 1902-57 29.9 (2) 1924-25, 1940 25.97 31,900 63.5 1939-57. 21.34 14, 300 28.5 2,880 1883-1957- 29.4 (2) Zavalla, Tex. 1951-57 1953 27.72 37, 300 13.0 May 3~--.- _ 27.23 32, 700 11.4 fiO 7,407 s 85. 21 5 128. 4 Town Bluff, Tex. 8 83. 14 596.18 51 Neches River at 7,908 1884-1957- . 1884 26.2 125,000 15.8 20.55 55, 300 7.0 52 837 1913-57 1915 34 (2) 1924-27, 1940 27.6 67,200 80.3 1939-57. May 2--. __ 17.96 10. 700 12.8

Trinity River basin

53 North Creek near 21.6 1956 21.58 (2) "324" Jacksboro, Tex. April" 28 24.45 6,990 54 West Fork Trinity 683 1900-57 1941 30 (2) River near Jacks­ 32.10 35,100 boro, Tex. 55 Bridgeport Reservoir 1,114 1932-57 . 1942 836.2 5 407. 6 above Bridgeport, "May 26, 27 835.9 s 380. 8 Tex. 56 Big Sandy Creek 332 1936-57 1941 15.69 53,000 160 near Bridgeport, " April" 26 1 - 13.05 29, 300 88.3 Tex. 57 West Fork Trinity 1,729 1880-1957- 1908 25 (2) River near Boyd, » 18. 20 6,6EO Tex. April 27 21.60 24, 400 See footnotes on page 294. B288 FLOODS OF 1957

Summary of flood stages and discharges Continued

Maximum floods

Drainage Prior to April 1957 Discharge No. Stream and place area of determination (sq mi) April-June Gage 1957 height Cfs Period Year (feet) Cfs per sq mi

Trinity River basin Continued

58 Eagle Mountain Res­ 1,974 1942 6 659. 9 5 333. 5 ervoir above Fort May 27.- - « 658. 9 5 292. 2 Worth, Tex. 59 Clear Fork Trinity 246 lOCOl QC7 34 <*) River near Aledo, 25.00 15, 800 64.6 Tex. May25__ 29.00 34,000 138 60 Benbrook Reservoir 433 1956 e 668. 90 5 20. 89 near Benbrook, 6 713. 35 5 185. 0 Tex. 61 Clear Fork Trinity 435 1949 28.72 82, 900 191 River near Ben- 11.28 4,350 brook, Tex. 62 Clear Fork Trinity 526 1900-57- 1949 ~Ma~y~25~" I 28.20 107, 000 203 River at Fort 18.10 14, 200 Worth, Tex. 63 West Fork Trinity 2,627 1900-57 « 25. 91 River at Fort 1922 8 23. 95 85,000 32.4 Worth. Tex. May 25-. 8.66 26, 800 64 West Fork Trinity 3,070 1908 830.6 (2) River at Grand 1925-57 1949 "May 26'-"---"." 8 28. 00 62,000 20.2 Prairie, Tex. 28.25 59, 200 65 Elm Fork Trinity 379 1903-57 1908 830.7 (2) River near Sanger, 1949-57 1950 8 27. 15 20, 100 53.0 Tex. "1908" April 26 27.45 20, 800 54.9 66 Isle du Bois Creek 261 lOflfi f\7 29.3 (2) near Pilot Point, 1950 26.35 17, 200 65.9 Tex. "1908" April 26 27.08 22, 700 87.0 67 Clear Creek near 296 1QQA_1QR7 31.5 (2) Sanger, Tex. 1950 24.80 18, 200 61.5 May2"5~ 24.27 16, 100 54.4 68 Garza-L/ittle Elm 1,658 1956 6 478. 53 6 36. 85 Reservoir near 6 535. 57 n 1,146 Lewisville, Tex. 69 Elm Fork Trinity 1,671 1908 33.8 (2) River near Lewis­ 1949-57 1950 30.75 21, 700 ville, Tex. 26.72 11,400 70 Denton Creek near 409 1908-57 - 1908 821.6 (2) Justin, Tex. 1 Q4.Q P»7 1950 15.67 6,210 15.2 17.64 29,800 72.9 71 Grapevine Reservoir 694 1952-57 - 1954 8 506. 08 » 39. 38 near Grapevine, « 560. 80 5 445. 8 Tex. 72 Denton Creek near 704 1 one- R7 1908 36+ (2) Grapevine, Tex. 1948 30.38 13,900 19.7 21.91 2,400 73 Elm Fork Trinity 2,457 1907-57 1908 20 (2) River near Carroll- 8.54 13,700 ton, Tex. 74 Trinity River at 6,120 1908 52.6 184, 000 30.1 Dallas, Tex. 41.72 75, 300 75 Sister Grove Creek 115 1865-1957- 1913 22 09 near Princeton, 1949-57 1950 15.77 5,700 49"6 Tex. April 26- - 16.28 9,080 79.0 76 Lav on Reservoir near 777 1953-57 1956 6 473. 03 f 155. 2 Lavon, Tex. May 26- . e 491. 90 s 462. 8 77 East Fork Trinity 779 1894-1957- - 1913, 22.3 (2) River near Lavon, 1942 Tex. 1953-57 1956 13.37 1,390 17.34 May 26, 27 39, 000 78 East Fork Trinity 1,257 1949-57 1950 22.12 24,000 "Iftl River near May 28-- . 22.81 33,000 26.3 Crandall, Tex. 79 Trinity River near 8,162 41.55 Rosser, Tex. 1938-57 1942 » 133, 000 ~~~6.~9 May 29 . 38.00 56, 000 80 Cedar Creek near 734 1889-1957- 1945 25.43 44, 800 61.0 Mabank, Tex. "April 28 _ 21.07 26,300 35.8 See footnotes on page 294. TEXAS AND ADJACENT STATES B289

Summary of flood stages and discharges Continued

Maximum floods

Drainage Prior to April 1957 Discharge No. Stream and place area of determination (sq mi) April-June Gage 1957 height Cfs Period Year (feet) Cfs per sq mil

Trinity River basin Continued

81 Richland Creek near 737 1899-1957- 1913 25.5 (2) Richland, Tex. 1939-57- 1948 24.16 58,900 79.9 ~Aprii~2i- I 23.11 44,600 60.5 82 Chambers Creek near 971 1913-57 1913 27.5 (2) Corsicana, Tex. 1939-57 1944 27.19 48,000 49.4 25.94 23,200 23.9 83 Trinity River near 12, 912 1905-57 __ 1908 52.2 164, 000 12.7 Oakwood, Tex. April 28 48.87 91,800 7.1 84 Trinity River near 14,484 1866-1916- 1890 12 45. 0 (2) Midway, Tex. 1939-57- 1942 48.58 146, 000 10.1 47.55 103,000 7.1 85 Trinity River at 17, 192 1908-57 1942 35.8 111,000 6.5 Romayor, Tex. 32.20 93,000 5.4 86 Trinity River at 17, 539 1903-57 1942 29.38 114, 000 6.5 Liberty, Tex. May 12- . 29.26 88, 100 5.0

San Jacinto River basin

87 East Fork San 330 1900-57 1940 24 59,000 179 Jacinto River near "April 30-11" 14.62 4,080 12.4 Cleveland, Tex. 88 Lake Houston near 2,811 1954-57 1955 ~M~a~yT,~2- 46.1 5 179. 2 Sheldon, Tex. 46.5 U84.8

Brazos River basin

89 Brazos River at Sey- i 14, 490 1923-57 __ 1926 95,400 318.2 nour, Tex. do - 1955 21.00 ~~~28~665~""" ~~3"5.~3 10.10 90 Fort Phantom Hill 478 1940-57 1941 ~M~a~y~2~5~-"I 56.8 680.90 58.7 « 89. 91 Nugent, Tex. 91 Clear Fork Brazos 2,220 1876-1957- 1876 30.0 (J) ~~2iL2 River at Nugent, 1924-57 1932 8 27. 05 47,000 Tex. 24.17 19,500 92 Lake Stamford near 360 1953-57 1954 " June ~£-l~3~_"" 1,410 M1.5 Haskell, Tex. 1, 412. 9 554.5 93 Clear Fork Brazos 3,974 l^Xh-57.... 1900 38 (2) ""(U River at Fort 1923-57- 1932 35.09 33,600 Griffin, Tex. . "l953" ~April28--- 33.76 30,300 7.6 94 1,087 "1925^57-- 34.2 (2) Breckenridge, Tex. 1955-57 1955 30.98 12,800 11.8 34.00 34,500 31.7 95 Brazos River near 121,600 1876-1957- 1876 36.2 09 "*7~l South Bend, Tex. 1938-57 1941 27.35 87,400 "Apru~29l II 32.70 66,000 35.3 96 Possum Kingdom i 22, 550 1941-57- 1941 1,001.0 s 743. 9 1,000.9 s 741. 8 Graford, Tex. 97 i 22, 760 1876-1957- 1876 (13) (2) Palo Pinto, Tex. 1924-57 - 1930 30 8 95, 600 37.1 April 29- - 8.87 85,400 98 EG 7 1880-1957- 1Q99 (14) near Santo, Tex. 1951-57- 1956 26.08 17,600 31.0 May 26"--,--- 31.05 45,100 79.5 99 74.4 1940 (15) Mineral Wells, 6,440 86.6 Tex. 25. 00 i 24, 840 1900-57 1922 30 (2) Glen Rose, Tex. 1923-57 1935 23.68 97,600 36.3 May 27____- 30.02 87,400 35.6 01 399 1908-57 1908 27.2 (2) Glen Rose, Tex. 1923-25, 1949 25.1 48,500 122 1947-57 April 26 . - 24.12 44,000 110 See footnotes on page 294. B290 FLOODS OF 1957

Summary of flood stages and discharges Continued

Maximum floods

Drainage Prior to April 1957 Discharge No. Stream and place area of determination (sq mi) April-June Gage 1957 height Cfs Period Year (feet) Cfs per sq mi

Brazos River basin Continued

102 Nolands River at 276 1887-1957- 1922 35 (2) Blum, Tex. 1924-25, 1949 24 25,000 90.6 1947-57. April 24...... "~~"l8.~63~ 15, 400 55.8 May 13_-_ 103 Whitney Reservoir i 26, 170 6 527. 66 5 525. 1 near Whitney, Tex. 8 570. 25 5 1, 980 104 Brazos River near i 26, 190 1922 45 (2) Whitney, Tex. 1938-57. 1949 31.03 71, 800 M.2 May 28 27.34 58,200 105 Aquilla Creek near 309 1887-1957- 1887 34 (2) Aquilla, Tex. April23 . 27.70 8,550 27.7 106 North Bosque River 988 k 1025 (3) near Clifton, Tex. > 1923-57 1945 1023.2 39,000 39.5 April 27 10 22. 48 37, 400 37.9 107 Brazos River at 1 28, 500 "l898:1957- 1936 is 40. 90 246, 000 3 12.8 Waco, Tex. April 20 32.33 101, 000 108 Leon River near 1,242 1858-1957- - 1908 27 (2) Hasse, Tex. 1939-57 1952 21. 49 38, £00 31.6 April 27 18.38 21, 200 17.1 109 Leon River at Gates- 2,279 1908 35 ville, Tex. 1951-57 1956 31.06 25, 300 11.1 May IS-.-.- 31.30 27,100 11.9 110 Belton Reservoir 3,499 1954-57 1956 6 571. 00 s 225. 8 near Belton Tex. 1913 « 620. 45 5 870. 3 111 Leon River near 3,513 1945 25 (2) "ie'i Belton, Tex. 1923-57 24.41 56, £00 9.12 8,490 112 Sulphur Creek above 78.0 ----- May 12... 65, 300 837 Lampasas, Tex. 113 Burleson Creek near 7.42 May 12- - 14, 300 1,930 Lampasos, Tex. 114 Sulphur Creek below 108 1873 1873 (") (2) Lampasas, Tex. 74,600 691 115 Lampasas River at 1,242 1873 44.2 (2) Youngsport, Tex. 1936 33.5 53,200 42.8 Mavl3 36.4 84,000 67.6 116 North Fork San Ga­ 240 1921 (18) (2) briel River near April 24...... 102, 000 425 Georgetown, Tex. 117 South Fork San Ga­ 120 1921 (19) (2) briel River near April 24-- ... 78, 800 657 Leander, Tex. 118 San Gabriel River at 415 1921 36.1 160,'000 386 Georgetown, Tex. April 24 34.10 155, 000 373 119 Little River at Cam- 7,000 1921 53.2 647,000 92.4 eron, Tex. April 25, 39.56 116, 000 16.6 120 Brazos River near i 38, 400 1899-1957- 1921 54 (2) ~~»~4.~7 Bryan, Tex. April 26. _ ... . 42.08 137, 000 121 Yegua Creek near 990 1913-57 1913 22.0 (2) ~~57 ~4 Somerville, Tex. 1924-57 1940 19.27 56, 800 April 27 13.61 17, 300 17.5 122 Navasota River near 1,439 1953 16.12 28,100 19.5 Bryan, Tex. April 26___ 16.36 35,800 24.9 123 Brazos River at Rich­ i 44, 020 1884-1957- 1913 48.2 (2 ) ~~'~3.~4 mond, Tex. 1903-06, 1940 38.40 117,000 1931-57. 124 Brazos River at Bra- 37.13 119, 000 33.4 zoria, Tex. May 10-- 23.70 20 88, 100

Colorado River basin

125 Lake J. B. Thomas i 3, 524 1953-57 . 1955 62,255.7 i 186. 0 near Vincent, Tex. 6 2, 255. 5 s 184. 5 ~3~44~2 126 Colorado River at i 4, 082 1939 35.9 66,000 Colorado City, Tex. May 25 19.71 13,000 38.7 127 Lake Colorado City 267 1 (MQ C7 6 2, 068. 13 s 27. 87 near Colorado City, Mayl3._____ 62,073.62 s 38. 52 Tex. See footnotes on page 294. TEXAS AND ADJACENT STATES B291

Summary of flood stages and discharges Continued

Maximum floods

Drainage Prior to April 1957 Discharge No. Stream and place area of determination (sq mi) April-June Gage 1957 height Cfs Period Year (feet) Cfs per mi

Colorado River basin Continued

28 Colorado River near i 15, 480 32 (2) Silver, Tex. 24.19 23, 200 36.0 29 Oak Creek Reservoir 222 1953-57 . 1956 6 1, 990. 75 5 21. 72 near Blackwell.Tex. 62,002.10 5 44. 54 30 Colorado River at 1 16, 840 1882-1 957-. 1884 36 (2) Ballinger, Tex. 1907-57 1936 28.6 75,400 314.4 May 11.-- ... 20.75 27,000 35.2 31 South Concho River 434 1882-1957- 23 (2) at Christoval, Tex. 21.95 100, 000 230 20.82 84,000 194 32 Middle Concho U.280 1900-57 1922 27.2 (2) River near Tank- 1930-57 1946 24.30 27,500 324.4 ersly, Tex. May 12....- 21.18 12,000 3 10. 6 33 Spring Creek near 734 1853-1957- 1882 26.0 (2) Tankersly, Tex. 1930-57 1942 21.37 26,900 36.6 21.35 29,400 40.1 34 Lake Nasworthy 1 2, 659 1930-57 1936 38.36 526.90 near San Angelo, 33.60 614.63 Tex. 35 North Concho River 11,533 1936 29.1 94,600 367.1 near Carlsbad, April 28 ... 14.75 8,180 35.8 Tex. 36 San Angelo Reser­ i 1,790 1952-57 1954 61,893.34 » 59. 27 voir at San Angelo, 61,902.70 s 93. 24 Tex. 37 Concho River near i 4, 492 1854-1957- 1906 47.5 246,000 358.3 San Angelo, Tex. 39.8 106,000 38 Concho River near i 5, 538 1915-57 1936 43.4 301,000 3 57.2 Paint Rock, Tex. 31.95 79,300 39 Colorado River at i 24, 580 1882-1957- 1936 62.2 (2) Winchell, Tex. 1923-34, 1930 51.8 76, 100 36.0 1939-57. MaylS...... 46.00 63,000 35.0 40 Hords Creek Reser­ 48 1948-57 1956 61,906.86 5 12. 79 voir near Valera, 61,902.44 59.97 Tex. 41 Hords Creek near 53 1932-57 1932 23.0 (2) Valera, Tex. 1947-57 1956 14.73 3,860 6.60 878 12 Brownwood Reservoir 1,535 1933-41, 1956 1, 431. 4 s 192. 3 near Brownwood, 1944-57 Tex. 1,429.4 5172.8 13 Pecan Bayou at 1,614 1900-57 ... 1900 21.7 (2) Brownwood, Tex. 1917-18, 1930 16.92 31,600 19.6 1923-57 April 26 14.78 17,400 14 San Saba River at 1,151 1899 23.3 (2) "li's" Menard, Tex. 1915-57 1938 22.7 130,000 April 19 _ 15.97 41,000 35.6 15 Brady Creek at Brady, 575 1904-57 1938 29.1 886,000 150 Tex. ~MayT2~ .. 13.96 8,920 15.5 16 San Saba River at 3,042 1899-1957- 1938 ~MayY3~~ » 45. 18 203,000 66. 7 San Saba, Tex. 28.23 27,500 9.0 17 Colorado River near 130,600 1938 63.2 224,000 312.0 San Saba, Tex. 37.34 66, 200 3.5 18 Buchanan Reservoir 131,250 1937-57. 1954, 1,020.6 51,006 near Burnet, Tex. 1955 May 3, 5, 13, 1,020.4 s 1,001 14, 29, June 6. 19 Llano River near 1,874 1888-1957- 1935 10 41. 4 319,000 170 Junction, Tex. May 27. 10 19. 92 40, 500 21.6 50 Llano River at Llano, 4,233 1935 41.5 380,000 89.8 Tex. May 27-.- ... 16.39 47, 200 11.2 51 Pedernales River near 947 1869-1957 1952 42.5 441,000 466 Johnson City, Tex. ~ApriT24 24.10 90,000 95.0 52 Lake Travis near i 38, 130 1940-57- 1942 691.2 51,377 Austin. Tex. "MayTsVrrill 707.4 s 1, 770 See footnotes on page 294. B292 FLOODS OF 1957

Summary of flood stages and discharges Continued

Maximum floods

Drainage Prior to April 1957 Discharge No. Stream and place area April-June Gage of determination (sq mi) 1957 height (feet) Cfs Period Year Cfs per sn mi

Colorado River basin Continued

153 Colorado River at i 38, 400 1843-1957- 1869 46.0 (>) Austin, Tex. 1898-1957- 1935 45.0 481,000 '18.2 17.60 40,800 154 Colorado River at 139,880 1870-1957- 1913 47.4 (2) Smithville, Tex. 1930-57 1935 42.5 305,000 310.9 April 28 24.20 66,900 32.4 155 Colorado River at '41,070 1869-1957- 1869, 41.6 (») Columbus, Tex. 1913 1903-11, 1935 38.5 190,000 6.5 1916-57 April 29 27.15 61,600 2.1 156 Colorado River near 141,650 1869-1957- 1913 56.1 (») Bay City, Tex. 1940, 1948- 1940 46.6 83,300 2.8 57 41.83 53,000 1.8

Lavaca River basin

157 Lavaca River near 887 1936-57 1936 33.8 83,400 94.0 Edna, Tex. April 29 23.55 9,440 10.6 158 Navidad River near 1,116 1909-57 1936 39.8 94,000 84.2 Ganado, Tex. April 30 30.08 18,100 16.2

Guadalupe River basin

159 Guadalupe River at 836 1848-1957- 1932 38.4 182, 000 218 Comfort, Tex. "ApriT24--II 24.59' 35,200 42.1 160 Guadalupe River near 1,282 1859-1957- 1869 53 (') Spring Branch, Tex. 1922-57 1932 42.10 121, 000 94.4 ~Apri]~24-II- 24.55 25,600 20.0 161 Guadalupe River 1,516 1869-1957.. 1869, 38 (2) above Comal River 1913 at New Braunfels, 1927-57 1935 32.95 101,000 66.6 Tex. ~ApriT25lIII- 18.13 26,900 17.7 162 Comal River at New 117 1869-1957- 1870 8 37. 65 (2) Braunfels, Tex. 1927-57 1952 36.14 35,000 299 May27 17.45 8,610 73.6 163 Blaneo River at 364 1869-1957- 1929 31.10 113,000 310 Wimberly, Tex. "April~24 "II 24.73 62,600 172 164 San Mareos River at 833 1859-1957- 1QAQ 40.4 (s) Luling, Tex. or 1870 1939-57 1952 34.95 57,000 68.4 April 25 ...... 32.70 29,400 35.3 165 Guadalupe River at 5,161 1904-57 1936 31.22 179,000 34.7 Victoria, Tex. May 2...... 29.92 35,300 6.8 166 San Antonio River at 42 1820-1957- 1921 20.14 15,300 364 San Antonio, Tex. May 27-. 9.23 1, 8EO 44.0 167 Medina River near 457 1880-1957 1919 43 (2) l40~~ Pipe Creek, Tex. 1922-34, 1932 833.8 64,000 1953-57 April 24 23.0 26,000 56.9 168 Medina Lake near 609 1913-57-- 1919 1,078.0 s 288. 8 San Antonio, Tex. June 26 1, 036. 7 5 105. 1 169 Medina River near 1,225 1913-57 (21) 55 (2) ""26" 6 San Antonio, Tex. 1939-57 1946 31,800 do . 1946 "April" 29"""" 41.57 """MSO"""" 22.83 "22." 9 170 San Antonio River 2,071 1875-1957- 1946 33.80 47,400 near Falls City, April 27 10.53 6,920 3.3 Tex. 171 Cibolo Creek at 280 1869-1957- 1889 26 (2) "l30~" Selma, Tex. 1946-57 1952 ~Ma~v~2~7~"II- 19.37 36,400 14.48 16,900 60.4 See footnotes on page 294. TEXAS AND ADJACENT STATES B293

Summary of flood stages and discharges Continued

Maximum floods

Drainage , Prior to April 1957 Discharge No. Stream and place area April-June Gage of determination (sq mi) 1957 height (feet) Cfs Period Year Cfs per sq mi

Guadalupe River basin Continued

72 831 1913 1913 35 (2) Falls City, Tex. 1930-57 1942 34.45 33,600 40.4 24.95 13,400 16.1 73 3,918 1924-29, (22) Goliad, Tex. 1939-57 1942 44.9 33, 800 8.6 31.56 10,300 2.6

Nuecea River basin

174 Nueces River at 764 1854-1957- 1955 32.7 307, 000 402 Laguna, Tex. May 27.-- - 8.18 6,490 8.5 175 West Nueces River 700 1879-1957- 1935 40 (23) near Brackettville, 1939-50, 1948 20.95 51,000 72.9 Tex. 1956-57 May 16-- 17.40 31,000 44.3 176 Nuecos River near 4,082 1800-57- 1935 33 (2) Asherton, Tex. 1939-57 1944 30.40 24, 000 5.9 27.82 7.7EO 1.9 177 Nueces River near 8,192 1900-57 1946 26.46 70,000 8.6 Tilden, Tex. 22.64 27, 600 3.4 178 Frio River at 405 1869-1957- 1932 34.44 162, 000 400 Concan, Tex. ~ApriT24 10.45 13,400 33.1 179 Sabinal River near 206 1932 1932 29 (2) Sabinal, Tex. 1942-57 1954 14.18 15,800 76.7 ~April~24 10.23 9,340 45.3 180 Hondo Creek near 132 1910-57 1919 25.8 (2) Hondo, Tex. 1952-57- 1954 10.90 13, 700 104 April 24 ...... 12.30 17,300 131 181 Seco Creek near 87.4 1866-1 957- . 1935 26.2 (2) ~~92~8 D'Hanis, Tex. 1952-57 1954 9.30 8,110 April 24.. - 7.17 4,620 52.9 182 Frio River near 3,493 1860-1957 1932 29.60 230,000 65.8 Derby, Tex. 11.34 10, 400 3.0 183 Frio River at 5,491 1870-1957- 1932 39.20 70,000 12.7 Calliham, Tex. 27.00 8,700 1.6 184 Atascosa River at 1,171 1923-57 1942 38.3 39,300 33.6 Whitsett, Tex. 27.73 8,410 7.2 185 Nueces River near 15,600 1 875^1957- 1919 46.0 85,000 5.4 Three Rivers, Tex. 39.20 22,200 1.4 186 Lake Corpus Christi 16, 656 1948^57 1949 77.03 557.00 near Mathis, Tex. 76.68 5 54. 96 187 Nueces River near 16,660 1888-1957- 1919 39.9 59,000 Mathis, Tex. 29.05 19, £00 ......

Rio Grande basin

188 Pecos River near 24 29. 560 1932-57 _ - 1941 10 20. 49 20,000 .7 Girvin, Tex. April 26 i» 14. 55 3,800 .1 189 Pecos River near 2* 35, 162 1898, 1900- 1954 121.7 2' 948, 000 27.0 Shumla, Tex. 57 May 10-._ ... 22.22 38,400 1.1 190 Devils River near 4,185 1900-14, 1932 36.60 597,000 143 Del Rio, Tex. 1923-57 May 13. _ 9.95 £0,700 12.1 191 Rio Grande at 24 135, 976 1865 1865 62.5 9EO, 000 7.0 Laredo, Tex. 1900-13, 1954 61.35 716, 900 5.3 1922-57 May 30 ---. 22.05 64,700 .5 192 International Falcon 24 164, 482 1953-57 1954 « 296, 18 5 2, 423. 0 Reservoir. e 290. 01 5 1, 973. 9 193 Rio Grande at M 164, 538 1952-57 - 1953 7.98 22,600 Chapeno, Tex. 7.35 13, 100

See footnotes on page 294. B294 FLOODS OF 1957

FOOTNOTES FOE PRECEDING TABLE 1 Part is noncontributing; see station description. 2 Unknown. 3 Based on contributing area. * Sometime before 1927. 5 Contents in thousands of acre-feet. 6 Elevation in feet. 7 From capacity table then in use. 8 At different site or datum; see station description. ' Daily mean discharge. 10 At site of supplementary gage. " Contents in thousands of acre-feet includim that of Lake Dallas. 12 Before construction of levees in 1916. 13 Several feet higher than that of any subsequent flood. >4 About the same as that of May 26, 1957. 15 As great or greater than that of May 23 or 25, 1957. 19 Affected by overtopped and broken left-bank levee. 17 1.5 feet higher than that of May 12, 1957 at site 0.7 mile downstream. 1B 3 feet hieher than that of April 24, 1957 at site 4 miles upstream. is 6.4 feet lower than that of April 24, 1957. 20 Does not include flow bypassing site in Oyster Creek and Buffalo Camp Bayou. 21 Sometime before construction of Medina Dam in 1913. 221942, 1913, and 1935; about same stage as that of July 1942. 23 Not determined at site; see station description. 24 Contributing area. TEXAS AND ADJACENT STATES B295

HYDRAULIC AND HYDROLOGIC ANALYSES

The storms and floods of April-June 1957 were noteworthy because of the large area covered, the persistent recurrence of storms, and the large volumes of runoff. At many places total rainfall, as well as total runoff, was greater than any previously known for an equal period; however, peak flows exceeded those previously known in only a few places. Hydrologic data such as streamflow, reservoir content, and rain­ fall records collected during this period provide information necessary to perform numerous hydraulic and hydrologic analyses. In order to determine the possible effects of reservoir storage dur­ ing major floods, flood-routing studies were made on the Brazos River from Glen Rose, Tex., to Bryan, Tex., and on the Colorado River from San Saba, Tex., to Austin, Tex. This report includes a discussion of frequency relationships of the floods on each of these streams. Analyses of rainfall and runoff were made on watersheds across the State to indicate, in general, the variable relation of rainfall to runoff during this period of outstanding flood runoff.

FLOOD-ROUTING STUDIES

The effect of flood-control structures and their operations can be determined by a flood-routing study. Flood routing may be used to determine a hydrograph at any point on a stream from a known hydrograph at some other point on the same stream, modified to account for inflow and changes in storage between the two points. There are several methods of routing flood waves through the reaches of rivers. The Muskingum method, which was used in this study, was developed by G. T. McCarthy, formerly of the U.S. Army Corps of Engineers. The basic equation for the method is: Storage=K{xI+ (l-x)D] where K= time between center of mass of flood wave at upstream and downstream end of reach £=a dimensionless constant that weighs inflow and outflow 7=inflow rate at given time D= outflow rate at given time To compute the coefficients K and x in the routing computations and to demonstrate the accuracy of the method, it was necessary to select floods whose magnitude and origin were similar to those of the 1957 floods but which had occurred before the construction of major reservoirs in the reach of the river and to route those floods through the reach of river channel being studied. B296 FLOODS OF 1957

BRAZOS RIVER BASIN The purpose of this study was to determine how great the dis­ charge of the Brazos River would have been at the gaging stations near Whitney, at Waco, and near Bryan, Tex., if Whitney and Belton Reservoirs had not been in existence during the 1957 floods. As no major floods occurred in the Brazos River basin during June, the flood-routing studies are limited to the period April 18 to May 31, 1957. Values for the routing coefficients, K and x, were computed from data of several observed floods that had occurred before the construc­ tion of Whitney Reservoir on the Brazos River and Belton Reser­ voir on the Leon River. The computed hydrographs for these floods compare favorably with the observed hydrographs at the gaging stations. Had Whitney Reservoir not been in existence during the flood of 1957, a peak discharge of 86,000 cfs would have occurred on May 5 at the Whitney gage; however, the reservoir reduced the flood peak to a controlled release of 29,500 cfs on May 11 (fig. 14). The highest peak that actually occurred was 58,200 cfs on May 28. The routing study also shows that had Whitney Reservoir not been built, the peak discharge at Waco would have been 123,000 cfs on May 4, 1957, as compared with the actual peak flow on May 3 of 47,400 cfs (fig. 15). The highest peak discharge that did occur at Waco was 101,000 cfs on April 20, 1957; however, nearly all the flood runoff producing this peak discharge originated below Whitney Reservoir. The effect of the reservoir storage was to change the time of distribution and of concentration of the principal flood wave. Without the storage provided by Whitney and Belton Reservoirs, the peak discharge of the Brazos River near Bryan would Tiave been 156,000 cfs on April 26. The actual peak was 137,000 cfs on April 26. The storage materially reduced the peak discharge of the major floods on April 30 and May 16 (fig. 16).

COLORADO RIVER BASIN The purpose of this study was to determine how great the discharge of the Colorado River at Austin, Tex., would have been if the res­ ervoirs between San Saba and Austin had not been in existence at the time of the 1957 flood. The values for the routing coefficients, K and x, were determined from flood data of 1935. By use of these coefficients, the 1935 flood was routed through the reach from the gaging station near San Saba to the gaging station at Austin. The resulting computed discharge hydrograph compared favorable with the measured discharge hydro- graph, and the coefficients were considered applicable for use in routing oz- -ZQ O 2,80939

DISCHARGE, IN THOUSANDS OF CUBIC FEET PER SECOND

iKaovrav QJSTV DISCHARGE IN THOUSANDS OF CUBIC FEET PER SECOND

B300 FLOODS OF 1957

the 1957 flood. For the study of the 1957 flood, only the period April 23-26, 1957 was considered, as this was the period during which the maximum rate of inflow into Lake Travis was recorded. Without the storage provided by Buchanan Reservoir, Lake Travis, and intervening reservoirs, a peak discharge of 390,000 cfs would have occurred on April 24 at the Austin gaging station. In contrast, a peak discharge of 32,500 cfs was measured at the Austin gage, indicating that the flood was almost completely controlled by the existing reservoirs (fig. 17).

400 Routed peak discharge 390,000 cfs

;Routed discharge at Austin" Omitting effect of reservoirs between San Saba and Austin

Measured peak discharge 32,500 cfs -Measured discharge at Austin

12PM 6AM 12AM 6PM 12PM 6AM 12AM 6PM 12PM APRIL 24, 1957 APRIL 25, 1957

FIGCBE 17. Comparison between hydrographs of measured and routed discharge of Colorado River at Austin, Tex.

FLOOD-FREQUENCY STUDIES The proper design of dams, bridges, highways, levees, waterworks, and all other structures located on the flood plains of streams requires consideration of the flood hazard. In addition to the magnitude of floods at the site of a proposed structure, the frequency of flood oc­ currence is a major factor in the economical design of a structure. It is seldom economically feasible to design a structure to withstand the maximum flood that may occur. Economical design balances the cost of flood protection against potential flood damage or liabilities arising from failure and interruption of services. The selection of the flood to be considered in planning a structure, the "design flood", is usually determined on the basis of some definite frequency of recurrence. TEXAS AND ADJACENT STATES B301

The recurrence interval as used in this study is defined as the average number of years within which a given flood peak will be equaled or exceeded once by the annual maximum discharge. A flood of a given recurrence interval may occur in any year, even in successive years. Probability terms may be used to avoid an infer­ ence of regularity of occurrence. For example, a flood with a 100-year recurrence interval has a 1 percent chance of occurring in any given year, and a flood with a 25-year recurrence interval has a 4-percent chance of occurring in any given year. Maximum discharges were tabulated for each year of observed record and for historical information. The maximum discharge for each year was assigned an order number, m, based on the descending order of magnitude; number 1 was assigned to the largest discharge, number 2 to the second largest, and so on to. the end of the tabulation. The recurrence interval in years, T, was then computed for each annual maximum discharge by use of the formula T=(n-\-l)/m, in which n is the number of years of record. Recurrence intervals were based on periods that combine the floods occurring outside the period of record with those occurring during the period of record.

BRAZOS RIVER BASIN A knowledge of extreme floods on the Brazos River at Waco extends back to about 1854, and a continuous record of stages and discharges begins in 1899. With these data, a flood-frequency study was made for the gaging station at Waco. The greatest flood in the 104-year period, 1854-1957, was the flood of September 27, 1936, which crested at 246,000 cfs. The recurrence interval of the 1936 flood is probably in excess of 100 years, that of the routed 1957 flood is about 10 years, and that of the peak discharge on April 20, 1957, is about 6 years. The floods in 1957 were outstanding not because of extremely high peak discharges but because of the large volumes of flood flows. Although the recurrence interval of the peak discharge of the flood in September 1936 at Waco was probably more than 100 years and that of the routed 1957 flood was 10 years, the volume of the 1957 flood runoff was three times the volume of the 1936 flood.

COLORADO RIVER BASIN A knowledge of extreme floods on the Colorado River at Austin, Tex., extends back more than 100 years. Information in "Annals of Travis County and all of the City of Austin", an unpublished manu­ script in the University of Texas library, by Frank Brown indicates that the flood of July 7, 1869, produced a stage that, at the time, was the maximum stage at Austin since at least 1833. A continuous record of stages and discharges began in February 1898. Between that date B302 FLOODS OF 1957

and September 9, 1940, when storage began in Lake Travis, the flood of 1935 was the largest recorded and the flood of 1938 was the second largest. No outstanding floods have been experienced on the Colorado River at Austin since storage began in Lake Travis; however, floods originating above Lake Travis would have produced extremely large floods in 1952 and 1957 had the reservoirs between San Saba and Austin not been in existence at the time of the floods. If the flood peaks of 1935 and 1938 and the routed peak discharges of the 1952 and the 1957 floods are considered, it is significant to note that of the 4 largest floods that occurred, or would have occurred, without the regulation by reservoirs, during the 125-year period 1833-1957, 3 of them, including the largest, occurred within a 23-year period, 1935-57. A flood-frequency study was made from data compiled for the gaging station at Austin. The great floods occurring in the years 1869, 1935, 1952, and 1957 are probably the four highest since at least 1833; therefore, the recurrence intervals for these four floods were computed from data for the 125-year period 1833-1957. The recurrence intervals for the remainder of the annual maximum floods were computed from data for the 43-year period 1898-1940. The recurrence interval of the computed 1957 crest of 390,000 cfs would be more than 30 years; the 1935 flood, 481,000 cfs, more than 40 years; the 1869 flood, 1 foot higher than that of 1935, more than 60 years; and the computed 1952 flood, more than 100 years.

RAINFALL-RUNOFF STUDIES Streams vary widely in their behavior, and flood runoff from a particular stream may be influenced by many complex conditions. The amount and intensity of rainfall, the topography, the geology, the size and shape of the drainage basin, and the antecedent soil- moisture conditions are only a few of many factors that to some degree influence the runoff from a drainage basin. Comparisons of rainfall and associated runoff are important in the appraisal of the effect of hydrologic conditions on the magnitude and concentration of flood runoff. Many studies have been made to develop a formula for expressing the relation of rainfall to runoff. However, the variability of the relations of rainfall to runoff is em­ phasized by the discussion on the following pages, which is based on hydrologic data obtained during the floods of April-June 1957. In order to show relations of rainfall to runoff across Texas, 10 basins distributed from the Sulphur River basin in northeast Texas to the Guadalupe River basin in southwest Texas (fig. 18) were selected. The drainage areas of the basins range from 1.26 to 1,365 square miles and are in regions where the average annual rainfall TEXAS AND ADJACENT STATES B303

1 North Creek basin 2 West Fork Trinity River basin 3 Little Elm Creek basin 4 Honey Creek basin 5 Sabine River basin 6 Sulphur River basin 7 Cow Bayou basin 8 Waller Creek basin 9 San Saba River basin 10 Guadalupe River basin

FIGURE 18. Map of Texas showing location of areas for rainfall-runoff study. ranges from 40 to 50 inches in the northeast part of Texas and from 20 to 25 inches in the southwest part. Total rainfall for the 3-month period in the selected areas ranged from 15.39 inches in the San Saba River basin to 33.16 inches in the Honey Creek basin. The average rainfall for each basin was deter­ mined by averaging rainfall from 2 to 8 rain gages located in or adjacent to each basin. At least one rain gage in each basin was a recording gage, that provided an index to the intensity of the rainfall. Daily readings are reported by the U.S. Weather Bureau; the reading for the 24-hour period usually is taken at 7 a.m. In some instances several daily readings were grouped together to determine the average for a storm period. It is possible that heavy rainfall for some of the basins was not shown by rainfall records because of sparse coverage by rain gages in those basins. Runoff, in inches, was computed for the 3-month period April to June 1957 from records of daily discharges at the stream-gaging station located at the lower end of the study basin. These values B304 FLOODS OF 1957

were accumulated for the 3-month period, April to June 1957, as were the rainfall values for the same period. The period of runoff for a particular storm was determined from a graph of the accumulated rainfall and the accumulated runoff. The accumulated rainfall and the accumulated runoff for the 3- month period for each basin are shown by graphs (figs. 19-28). Table 1 gives the dates of the major storms, the total rainfall, and the total runoff for each of the storm periods, for each month, and for the 3-month period. The dates of the flood periods have not been shown, but they began shortly after the rainfall began and continued for a period of from 2 to 5 days after the rainfall ceased; the time varied with the nature of the storm, the topography of the area, and the size of the basin. SULPHUR RIVER BASIN The Sulphur River, tributary to the Red River, is in northeast Texas. The drainage area of the basin above the stream-gaging station, Sulphur River near Talco (100 miles northeast of Dallas), Texas, is 1,365 square miles. The average annual precipitation over the basin is 40 to 45 inches. During the period April to June an average of 31.61 inches of rain fell in the Sulphur River basin above the Talco gage, of which 13.02 inches fell in April and 13.53 inches fell in May (fig. 19).

35

,cc jmulsted n infall

30

Ace umulc ted runoff r 7

110

5 10 15 20 25 30 5 10 15 20 25 31 5 10 15 20 25 30 APRIL I MAY I JUNE FIGURE 19. Graph showing rainfall and runoff, Sulphur Kiver near Talco, Tex., April-June 1957. TEXAS AND ADJACENT STATES B305

The density of the rain gages used in computing the average rainfall for this basin is about one for every 170 square miles, about the same density as in the other basins having drainage areas of more than 600 square miles. Runoff was computed from daily discharges for the stream-gaging station near Talco, Tex. The data on rainfall and runoff for four storm periods, the monthly totals, and the total for April-June (table 1) indicate that the ratio of runoff to rainfall increases each month and that the greatest in­ crease is in June; it is probable, however, that some residual runoff from the previous month is included in the totals.

SABINE RIVER BASIN The Sabine River basin is in northeast Texas. The drainage area of this basin above the stream-gaging station on Sabine River near Emory, Tex. (55 miles east of Dallas), is 965 square miles. The average annual precipitation over the basin is between 35 and 40 inches. The density of rain gages for the area is one for every 120 square miles. Measured rainfall for the 3-month period ranged from 19.79 to 36.95 inches and averaged 26.47 inches (fig. 20). The rainfall for the month of March had been from 1.5 to 3.5 inches above normal, and the soil was generally wet at the time of the heavy rains of April, May, and June.

30

Accumulated rainfall

25

Z20 [Accumulated runoff

15

5 10 15 20 25 30 5 10 15 20 25 31 5 10 15 20 25 30 APRIL I MAY I JUNE

FIGURE 20. Graph showing rainfall and runoff, Sabine River near Emory, Tex., April-June 1957. B306 FLOODS OF 1957

The data on rainfall and runoff for four storm periods, the monthly totals, and the total for April to June (table 1) indicate that the ratio of runoff to rainfall was the highest during the storm period April 20-27. This was probably due to (1) the large quantity of rain that fell each day during the period, and (2) the above-normal rainfall during February, March, and the first week of April. Rain of greater intensity fell on May 13, but this storm was spotty and of short duration; rainfall on that day ranged from 0.22 to 3.85 inches at eight rain gages in the watershed. Monthly rainfall during the 3-month period ranged from 2.79 to 13.08 inches; however, the ratio of runoff to rainfall remained almost constant for each month even though some storm periods indicated higher rates of runoff than others. NORTH CREEK BASIN North Creek, tributary, to West Fork Trinity Riverj is in north- central Texas. The drainage area above the stream-gaging station, North Creek near Jacksboro (70 miles northwest of Fort Worth), Texas, is 21.6 square miles. The average annual precipitation for this area is between 25 and 30 inches. During the 3-month period, April to June, an average of 29.49 inches of rain fell in the basin (fig. 21). The average was based on precipitation measured in 2 nonrecording and in 3 recording rain gages located within the basin. The density of the rain gages used

10 15 20 25 30 5 10 15 20 25 31 5 10 15 20 25 30

FIGURE 21. Graph showing rainfall and runoff, North Creek near Jacksboro, Tex., April-June 1957. TEXAS AND ADJACENT STATES B307 is one for every 4.3 square miles. Very little of the rainfall during June reached the stream as runoff. The data on rainfall and runoff for four storm periods, the monthly totals, and the total for April-June are shown in table 1.

WEST FORK TRINITY RIVER BASIN West Fork Trinity River is in north-central Texas. The drainage area of the basin above the stream-gaging station, West Fork Trinity River near Jacksboro (70 miles northwest of Fort Worth), Texas, is 683 square miles. The average annual precipitation is between 25 and 30 inches. During the period April to June, an average of 24.98 inches of rain fell, of which 10.10 inches appeared as surface runoff (fig. 22). The rainfall observed at the five rain gages ranged from 19.97 to 30.49 inches for the 3-month period. The density of the rain gages for this basin is one for every 140 square miles, and a fair coverage of the rainfall was obtained; however, it is possible that thunder­ storms may have produced heavy rains that were not recorded by the rain gages. The data on rainfall and runoff for four storm periods, the monthly totals, and the total for April-June (table 1) indicate that the ratio of runoff to rainfall was greatest during the time of greatest rainfall, and that even after the wet months of April and May, the ratio for June was less than that of the 2 preceding months.

5 10 15 20 25 30 5 10 15 20 25 31 5 10 15 20 25 30 APRIL I MAY I JUNE FIGURE 22. Graph showing rainfall and runoff, West Fork Trinity River near Jacksboro, Tex., April- June 1957. B308 FLOODS OF 1957

LITTLE ELM CREEK BASIN Little Elm Creek, tributary to Elm Fork Trinity River, is in north-central Texas. The basin above the stream-gaging station, Little Elm Creek near Aubrey (40 miles north of Dallas), Texas, has a drainage area of 75.5 square miles. The area is mostly culti­ vated land, but there is some pasture. The average annual rainfall for this region is 35 to 40 inches. During the period April-June, an average of 30.96 inches of rain fell (fig. 23), as determined from 6 nonrecording and 2 recording rain gages located within the basin. The density of the rain gages used is one for every 9.4 square miles. Most of the rain fell in two periods, April 18-27 and May 20-27. During the period in April, 11.51 inches of rain fell, and 9.65 inches appeared in the stream as runoff; during the period in May, 8.36 inches of rain fell, and Q.01 inches appeared in the stream as runoff. The ratios of runoff to rainfall for April and May were high in com­ parison with that for June, mainly owing to the small amount of rain during June. The data on rainfall and runoff for three storm periods, the monthly totals, and the total for the period April-June are shown in table 1.

5 10 15 20 25 30 5 10 15 20 25 31 5 10 15 20 25 30

FIGXJKE 23. Graph showing rainfall and runoff, Little Elm Creek near Aubrey, Tex., April-June 1957. TEXAS AND ADJACENT STATES B309

HONEY CREEK BASIN Honey Creek, tributary to East Fork Trinity River, is in north- central Texas. The drainage area above the gaging station at flood-detention structure No. 12, near McKinney (35 miles north of Dallas), Texas, is 1.26 square miles, which is all in pasture. Runoff was computed from rate of change in contents in the reservoir plus outflow through the outlet structure and over the emergency spillway of the flood-detention structure. The rainfall was computed as a weighted mean of the catches of 2 nonrecording rain gages and 1 recording rain gage. The density of the rain gages used is one for every 0.42 square mile. During the period April-June, an average of 33.16 inches of rain fell in the basin (fig. 24), an amount that almost equals the average annual rainfall at this site. The greater part of this rain, 25.39 inches, fell in two storm periods, April 19-29 and May 21-26. In March 1957, 5.59 inches of rain had been recorded in the basin, as compared with a March average of 4.34 inches at McKinney, 10 miles southeast; therefore, the soil-moisture content was high at the time of the heavy rains of April and May, and the ratio of runoff to rainfall could be expected to be fairly high for the 3 months,

5 10 15 20 25 30 5 10 15 20 25 31 5 10 15 20 25 30

FIGTJRE 24. Graph showing rainfall and runoff, Honey Creek subwatershed No. 12 near McKinney, Tex., April-June 1957. B310 FLOODS OF 1957

April-June. The ratios of runoff to rainfall for April and May were higher than that for June. During June only 1.06 inches of rain fell in 3 widely separated days and very little runoff occurred. The rainfall and runoff for three storm periods, monthly totals, and the total for the period April-June are shown in table 1.

COW BAYOIT BASIN Cow Bayou, tributary to the Brazos River, is in north-central Texas- The drainage area above the gaging station at flood-detention structure No. 4 near Bruceville (20 miles south of Waco), Texas, is 5.25 square miles, most of which is in pasture. The runoff was computed from the rate of change in contents in the reservoir plus outflow through the outlet structure and over the emergency spillway of the flood-detention structure. The rainfall was computed as a weighted mean of the catches in one nonrecording and one recording rain gage. The density of the rain gages used is one for every 2.62 square miles. During the period April-June, an average of 28.14 inches of rain fell in the basin, of which 15.48 inches appeared in the stream as runoff (fig. 25). The storm of May 10-14 was very intense; 7.2 inches of rain fell in about 4% hours and produced a peak discharge of 7,150 cfs from 5.25 square miles, or 1,360 cfs per square mile. High runoff rates were expected from this storm because of the heavy rainfall and the saturated condition of the soil as a result of excessive previous rainfall.

5 10 15 20 25 30 5 10 15 20 25 31 5 10 15 20 25 30 APRIL I MAY f JUNE FIGURE 25. Graph showing rainfall and runoff, Cow Bayou subwatershed No. 4 near Bruceville, Tex., April-June 1957. TEXAS AND ADJACENT STATES B311

The data on rainfall and runoff for three storm periods, monthly totals, and the total for the period April-June are shown in table 1

SAN SABA RIVER BASIN The San Saba River, tributary to the Colorado River, is in west- central Texas. The drainage area of the basin above the stream- gaging station, San Saba River at Menard, Tex., is 1,151 square miles. The average annual precipitation over the basin is between 20 and 25 inches. During the period April to June, an average of 15.39 inches of rain­ fall was measured (fig. 26). The density of the rain gages used in this basin is about one for every 190 square miles. The data on rainfall and runoff for four storm periods, the monthly totals, and total for the 3-month period are shown in table 1. The high rate of runoff for the month of May, in comparison with those for April and June, was due to the storms of May 9-13 and May 24 to June 1, which produced 74 percent of the May rainfall and 67 percent of the May runoff. Daily rainfall totaled as much as 3.00 inches, and hourly rainfall totaled as much as 1.05 inches on May 13 and 1.34 inches on May 26 at the recording rain gage near the upper end of the basin. The ratio of runoff to rainfall in this basin was about equal to that in the Guadalupe River basin above Spring Branch, Tex., which drains about the same type of country and is located about 80 miles southeast of this basin. WALLER CREEK BASIN Waller Creek, tributary to the Colorado River, is in Austin, central Texas. The drainage area above the stream-gaging station, Waller Creek at 23d Street, Austin, is 4.13 square miles. This is primarily a residential area with many paved streets, sidewalks, rooftops, and

10 15 20 25 30 5 10 1& 20 25 5 10 15 20 25 30 APRIL I MAY JUNE FIGUEE 26. Graph showing rainfall and runoff, San Saba Eiver at Menard, Tex., April-June 1957. B312 FLOODS OF 1957

25

Ace imulcted rs infall '20

U.-15 o

Ace imulj ted ri noff

5 10 15 20 25 30 5 10 15 20 25 31 5 10 15 20 25 30 APRIL I MAY I JUNE

FIGURE 27. Graph showing rainfall-runoff, Waller Creek at 23d Street, Austin, Tex., April-June 1957. similar areas where rainfall cannot soak into the ground. The rainfall was computed as a weighted mean of data from 3 nonrecording and 3 recording rain gages within the basin. The density of the rain gages used is one for every 0.69 square mile. The official U.S. Weather Bureau rain gage for the Austin area is at the municipal airport, which is near but outside the Waller Creek basin. The runoff was computed from the streamflow records for Waller Creek at 23d Street, Austin, Tex. During the period April-June, an average of 20.99 inches of rain fell in the basin, of which 8.96 inches appeared as surface runoff at the stream-gaging station (fig. 27). The data on rainfall and runoff for three storm periods and the monthly totals for the period April-June (table 1) indicate that each succeeding storm produced a higher ratio of runoff to rainfall, even though in each case the total rainfall for the period was less. Each succeeding month also showed an increase in the ratio of runoff to rainfall; however, the runoff for June included a quantity of water that had been released into the creek from city swimming pools. GUADALUPE RIVER BASIN The Guadalupe River is in south-central Texas. The drainage area of this basin above the stream-gaging station Guadalupe River near Spring Branch (40 miles northwest of San Antonio), Texas, is 1,282 square miles. The average annual precipitation over the basin is 25 to 30 inches. During the period April-June, an average of 17.04 inches of rain fell over the basin (fig. 28), of which 7.50 inches fell in April, 7.31 inches in May, and 2.23 inches in June. At one of the rain gages in TEXAS AND ADJACENT STATES B313

ID 15 20 25 So 5 io 15 25 25 si 5 10 15 2025 so APRIL I MAY I JUNE FIOTJRE 28. Graph showing rainfall and runoff, Ouadalupe River near Spring Branch, Tex., April-June 1957. the basin the total rainfall for March was 2.62 inches more than the long-term average March rainfall at that location a fact which sug­ gests that there was considerable moisture already in the ground at the time of the April-June rains. The density of the rain gages in this basin is about one for every 160 square miles. The runoff in inches was computed from daily discharges for the s.tream-gaging station near Spring Branch. The highest rate of runoff occurred during the storm period April 24-30 (table 1). During this storm period as much as 4.33 inches of precipitation was measured during a 24-hour period and 2.53 inches in 2 hours; 1.72 inches was measured in 1 hour on April 24 at the recording gage "Bankersmith" located just north of the basin. The runoff appears low for the month of May and high for the month of June; heavy rains occurred on the last day of May and did not appear as runoff at the stream-gaging station until the first part of the following month. TABLE 1. Rainfall and runoff, in inches, for selected basins in Texas, April-June 1957

Period Rainfall Runoff Period Rainfall Runoff

Sulphur River near Talco, Tex. [Drainage area, 1,365 square miles]

April 19 to Mays....- _ - ... 10.74 7.68 April.-.- . .. 13.02 8.49 May 11-14 . ... 4.16 3.13 13.53 9.88 May 21-26...... 7.19 5.89 5.06 4.62 May 29 to June 5 _____ ... 4.73 3 Qfl 31.61 22.99

Sabine River near Emory, Tex. [Drainage area, 965 square miles]

April 20-27...... 9 AA 7 3ft 13.08 8.88 May 12-14. .... 3.14 10.60 7.13 May 20-28 __ ...... 5 1Q 3 no 2.79 1.93 May 30 to June 6 ______.. 2.60 1 84 26.47 17.94

656087 O 62 21 B314 FLOODS OF 1957

TABLE 1. Rainfall and runoff, in inches, for selected basins in Texas, April-June 1957 Continued

Period Rainfall Runoff Period Rainfall Runoff

North Creek near Jacksboro, Tex. [Drainage area, 21.6 square miles] April 18-30-.. - ...... 14.14 8.40 14.41 8.40 May 8-13...... 3.01 1.20 11.09 5.26 Mav 22-25..-.. -...... 3.48 2.01 3.99 .70 1.83 .44 29.49 14.36

West Fork Trinity River near Jacksboro, Tex. [Drainage area, 683 square miles]

April 19-29-- - - 10.97 5.33 April 11.77 5.19 May 9-18..-.------.--. ------4.53 1.54 10.11 4.02 May 22-25...... 2.86 .69 3.10 .89 2.86 .59 24.98 10.10

Little Elm Creek near Aubrey, Tex. [Drainage area, 75.5 square miles] April 18-27.-- ...... 11.51 9.65 16.12 10.70 May 11-14.. - _ . 3.52 2.41 .90 .16 May 20-27..- ...... 8.36 6.01 30.96 20.87 13.94 10.01

Honey Creek sub watershed No. 12 near McKinney, Tex. [Drainage area, 1.26 square miles]

April 19-29..- ...... 13.01 9.47 18.35 15.06 May 13...... 1.39 1.00 1.06 .06 May 21-26...... 12.38 11.55 33.16 25.52 April ______. _ .. .. 13.75 10.40 Cow Bayou subwatershed No. 4 near Bruceville, Tex. [Drainage area, 5.25 square miles]

April 21-28----.-.-. --.-- 10.11 5.77 9.99 7.14 May 10-14------.-- - 8.01 6.08 June _ .-- 2.37 .20 June 1-5 _ ... _- 1.51 .12 28.14 15.48 April...... 15.78 8.14 San Saba River at Menard, Tex. [Drainage area, 1,151 square miles] April 19-30-...... - 5.13 0.82 5.72 .82 May 9-13 ...... 3.49 .79 8.11 1.63 May 24 to June 1 _____ .. 2.55 .30 1.56 .09 June 1-6 ____ ._ .63 .08 15.39 2.54 Waller Creek at 23rd Street at Austin, Tex. [Drainage area, 4.13 square miles]

April 21-28.-- ...... 8.81 3.00 6.58 2.52 May 25-27 ------3.42 1.33 5.16 13.03 June 11-12.-. _ _ _ -. 2.73 1.38 20.99 8.96 April...... 9.25 3.41 Guadalupe River near Spring Branch, Tex. [Drainage area, 1,282 square miles] April 24-30...... 4.18 1.08 April...... 7.50 1.28 May 8-10...... 1.08 .09 7.31 .67 May 25-28 ...... 2.75 .18 2.23 .54 May 30 to June 3 _____ .. 2.30 .36 17.04 2.49

Includes releases from city swimming pools. TEXAS AND ADJACENT STATES B315

FLOOD-CREST ELEVATIONS Records of flood-crest elevations on the lower reaches of the Red River, given in the following table are of particular interest to those concerned with planning projects or designing structures to be built on or adjacent to the flood plain. Points of measurement are located either by designation of U.S. Army Corps of Engineers gage or by ref­ erence to towns and cities, and by distance above river mouth. Maximum flood-crest elevations and the dates of occurrence are pre­ sented for each of the months, May and June. Flood-crest elevations at U.S. Geological Survey gaging stations may be determined, when the gage datums are known, by adding the maximum gage height during the flood to the datum of the gage above mean sea level.

Flood-crest elevations on lower Red River [Furnished by U.S. Army Corps of Engineers]

Miles above mouth May 1957 June 1957

Designation of Gage Elevation Elevation 1938 1956 Date (feet above Date (feet above mean sea mean sea level) level)

H.W. No. 77- ...... - 492.4 445.5 8 280.4 76 490.0 443.0 8 278.4 487.4 440.4 1 274.0 8-9 276.0 H.W. No. 75 482.7 435.7 2 268.9 9 271.7 74 . - 478.0 429.2 2 263.4 9 267.0 73 472.0 425.1 2 261.5 9 263.1 72 469.4 423.8 2 259.8 8 261.1 Fulton, Ark. ______462.7 417.6 1-2 255.4 9 256.0 H.W. No. 71 459.3 414.0 1 253. 45 8-9 253.7 70... _ ------_ 454.4 411.3 1 250.7 9 250.5 69 449.3 405.7 1-2 247.9 9 247.5 68 441.7 399.7 1 244.1 9-10 243.7 67 434.5 393.2 2 241.5 10 241.6 66 431.5 391.7 2 237.5 10 237.3 Garland City, Ark __ -- _ 423.2 386.1 2 234.0 10 233.6 H.W. No. 65 418.0 380.8 2 228.4 9 228.4 64 . 413.3 376.0 2 225.5 9 224.6 63 407.8 371.6 2 222.0 9 220.2 62. 402.6 367.6 3 218.2 9 218.9 61 399.8 363.0 2 215.9 9 212.0 60 395.2 359.5 59. 392.3 356.0 3 213.1 9 211.5 EQ 381.0 350.0 9 205. 6 K7 345.1 3 377.8 345.1 3 204.0 11 202.0 H.W. No. 56 373.7 342.0 3 201.0 368.4 336.0 54 367.8 335.4 3 197.8 11 196.9 53 362.0 330.2 3 193.0 11 192.9 52 357.4 326.8 3 190.3 11 191.3 51 352.0 322.0 3 188.8 11 189.4 50 340.9 316.4 3 184.4 11 185.2 49 335.5 311.1 3 182.0 11 182.6 48 329.8 304.1 3 177.1 11 177.5 47 324.5 298.5 3 174.8 11 174.5 46 319.3 293.3 11 172.1 45 315.3 289.1 4 169.9 11 168.9 B316 FLOODS OF 1957

Flood-crest elevations on lower Red River Continued [Furnished by U.S. Army Corps of Engineers]

Miles above mouth May 1957 June 1957

Designation of Gage Elevation Elevation 1938 1956 Date (feet above Date (feet above mean sea mean sea level) level)

310.2 283.8 4 165.4 11 164.4 H.W. No. 44..-...... 306.4 280.5 4 162.1 12 161.5 43 300.0 276.7 12 160.0 ^...... 294.9 271.7 4 158.8 12 157.3 41 290.1 266.2 4 155.7 12 154.6 40 284.8 261.2 4 153.5 12 152.3 39 - __ ...... 281.0 257.5 5-6 152.8 12 151.4 38 275.2 250.8 5-6 149.5 12-13 148.0 37 269.8 244.6 5-6 147.4 12 145.6 36 265.6 240.3 5-6 145.4 12-13 143.5 35 260.3 235.3 7 142.3 12 140.0 34 254.8 230.9 8 140.1 12 139.1 33 249.5 225.8 8 136.7 12 136.1 242.3 221.0 8 133.5 13-14 133.0 H. W. No. 32...... 241.2 220.0 12 132.6 31 236.2 214.3 8-9 130.5 12 130.0 30 233.7 211.9 8-9 130.1 13 129.6 29 229.3 207.1 9 128.4 12 127.7 28 221.8 200.0 8-9 124.7 14 124.5 97 215.2 192.7 26 211.0 188.0 (H) 120.0 205.5 183.2 9-10 117.0 15 116.9 H.W. No, 25 201.4 178.6 9-11 115.8 15-16 115.5 197.0 174.3 10 113.5 15 113.0 W...... 191.0 167.5 11 111.4 '2Z...... 187.0 163.7 11 111.0 15 110.5 21...... 181.6 158.9 11 108.3 20 178.3 155.7 11-12 106.6 15-16 106.6 19 172.4 150.4 11-12 105.0 15-16 105.0 18 . 164.9 143.0 11 102.6 15-17 101.8 Colfax, La...... _____ ...... 160.7 139.7 12 100.8 16 100.7 H.W. No. 17...... 154.2 134.8 12 99.1 16 98.8 16 147.4 129.0 11 97.2 17 97.8 15 _ 143.0 124.0 12-13 95.0 16 94.8 14...... 138.2 119.6 13 93.3 16 93.1 13...... 132.0 113.5 11-13 90.1 15-17 90.2 12 ...... 126.9 108.6 13 88.4 121.4 103.5 13 85.0 16-17 §5.6 H.W. No. 11...... 116.3 98.5 12-13 82.6 15-18 82.4 10 109.4 91.8 12-14 79.1 15-17 79.0 9...... 103.9 85.6 14 77.1 15-18 77.0 8. ______. _____ ... 100.2 83.1 11-14 75.6 16-18 75.6 7...... 94.7 77.5 12 74.1 16 73.9 6...... 90.0 73.3 12-14 71.5 16 71.6 5...... 86.3 69.7 14 68.6 16 68.6 82.7 66.2 12-13 66.9 16 66.8 H.W. No. 4 .______74.7 60.7 11-12 65.0 17 65.1 3 ...... _____ 70.1 58.3 12-14 63.8 17-18 64.1 ^...... 65.7 55.1 12 61.0 18-19 61.4 1 _. . 52.3 50.9 14-15 58.6 15-19 58.8 47.6 46.1 11-17 55.4 20 56.3 Acme Gage (Blacfc River). ______35.7 34.2 11-14 48.8 15-22 51.3 23.3 22.0 13-14 49.0 Barbre Landing ...... 7.7 6.2 5-7 40.0 12 42.7 Torrasgage ______2.4 1.0 6 44.1 11 46.95 INDEX

Brazos River Continued Page near Bryan, Tex.______.. B169-170.299 Abstract_ __...... __.- Bl near Glen Rose, Tex . 143-144 Acknowledgments. . 4-5 near Palo Pinto, Tex _. 138-140 Acre-foot, definition of __ __.____ 5 near South Bend, Tex_____.___. 135-136 Aledo, Tex., Clear Fork Trinity River near. _ 81-82 near Whitney, Tex. . 149-151,295 Alexandria, La., Red River at______56 Brazos River basin, flood-frequency studies 301 Amarillo, Tex., Canadian River near..__.. 16-17 flood-routing studies - 296 Angelina River near Lufkin, Tex. __ 65-66 records.-.-.__... . . 124-175 near Zavalla, Tex...... _._ 67-68 summary of flood stages and discharges. 289-290 Aquilla, Tex., Aquilla Creek near._____ 151-153 Breckenridge, Tex., Hubbard Creek near... 132-134 Aquilla Creek near Aquilla, Tex______151-153 Bridgeport, Tex., Big Sandy Creek near_... 76-77 Archer City, Tex., Lake Kickapoo near...... 24-25 Bridgeport Reservoir abo ve. 74-75 Arkansas River basin, records.. 16-17 Bridgeport Reservoir above Bridgeport, Tex. 74-75 summary of flood stages and discharges... 285 Brown wood, Tex., Brownwood Reservoir Arthur City, Tex., Red River at____._ 34-35 near.__._. .__-__ 204-205 Asherton, Tex., Nueces River near....__. 260-261 Pecan Bayou at--__ . - 205-207 Atascosa River at Whitsett, Tex .__._ 273-275 Brownwood Reservoir near Brownwood, Attoyac Bayou near Chireno, Tex__.___' 66-67 Tex. 204-205 Aubrey, Tex., Little Elm Creek near___ 308,314 Bruceville, Tex., Cow Bayou subwatershed Austin, Tex., Colorado River at___.__ 222-224 No. 4 near.__-_--....___ 310,314 Lake Travis near______221-222 Bryan, Tex., Brazos River near. _. - 169-170 Waller Creek at 23rd Street. ..___ 311,314 Navasota River near.. 172-173 Buchanan Reservoir near Burnet, Tex 214-215 B Burkeville, Tex., Sabine River below Toledo Ballinger, Tex., Colorado River at ... 183-185 Bend, near______61-62 Bay City, Tex., Colorado River near...._ 229-230 Burleson Cieek near Lampasas, Tex.__.. 162-163 Bayou Bodcau near Sarepta, La.. ... 50-51 Burnet, Tex., Buchanan Reservoir near. 214-215 Bayou Bodcau Reservoir near Shreveport, La. 51-52 Bayou Dorcheat near Minden, La....__ 48-49 Beaver Creek near Waurika, Okla______24 Cache Creek near Walters, Okla 19-20 Belton, Tex., Belton Reservoir near.____ 161 Caddo Lake near Mooringsport, La.. 41 Leon River near______162 Calliham, Tex., Frio River at...... 271-273 Belton Reservoir near Belton, Tex__._ ____161 Cameron, Tex., Little River at__...- 167-169 Benbrook, Tex., Benbrook Reservoir near . 82-83 Canadian River near Amarillo, Tex-___ 16-17 Clear Fork Trinity River near______83-85 Carlsbad, Tex., North Coneho River near. 191-193 Benbrook Reservoir near Benbrook, Tex... 82-83 Carrollton, Tex., Elm Fork Trinity River Benton, La., Cypress Bayou near.....__ 52-53 near . _- 105-107 Big Sandy Creek near Bridgeport, Tex_ 76-77 Cedar Creek near Mabank, Tex 115-117 Black Bayou near Gilliam, La______43-44 Chambers Creek near Corsicana, Tex. ..- 118-119 Blackwell, Tex., Oak Creek Reservoir near_ 182 Chapeno, Tex., Rio Grande at_ 284 Blanco River at Wimberley, Tex__. _. __ 239 Chireno, Tex., Attoyac Bayou near . 66-67 Blum, Tex., Nolands River at..__.___ 147-148 Christoval, Tex., South Coneho River at 185-186 Boyd, Tex., West Fork Trinity River near... 78-79 Cibolo Creek at Selma, Tex.... - 251-253 Brackettville, Tex., West Nueces River near Falls City, Tex. . 253-255 near______258-259 Clarence, La., Saline Bayou near. 55 Brady, Tex., Brady Creek at-___.__... 209-211 Clear Creek near Sanger, Tex__ 95-98 Brady Creek at Brady, Tex...... _._ 209-211 Clear Fork Brazos River at Fort Griffin, Braunfels, Tex., Comal River at--_____ 237-238 Tex 130-132 Brazoria, Tex., Brazos River at______174-175 at Nugent, Tex... 127-129 Brazos River at Brazoria, Tex______174-175 Clear Fork Trinity River at Fort Worth, Tex. 86-88 at Richmond, Tex.______173-174 near Aledo, Tex.... . 81-82 at Seymour, Tex______124-126 near Benbrook, Tex.. . 83-85 at Waco, Tex-__.______..... 154-157,298 Cleveland, Tex., East Fork San Jacinto from Glen Rose, Tex., to Bryan, Tex., River near 122-123 flood-routing studies made____ 295 Clifton, Tex., North Bosque River near 154 B317 B318 INDEX

Page Colbert, Okla., Red River near...... ----.- B33-34 Page Colorado City, Tex., Colorado River at._ 176-178 Falls City, Tex., Cibolo Creek near...... B253-265 Lake Colorado City near______.. 178-179 San Antonio River near._____.__ 249-251 Colorado River at Austin, Tex__.___ 222-224,300 Flood-control reservoirs...... _ . 13 at Ballinger, Tex..._------____.. 183-185 Flood-crest elevations...._..._.___._. 315 at Colorado City, Tex______176-178 Flood damage, Lampasas, Tex._.___.... 7-8 at Columbus, Tex. _.... 227-228 Flood-determination points in Texas...... 10 at Smithville, Tex___.._.____... 224-226 Flood discharges, determination of. ... 13 at Winchell, Tex...... ____.____ 200-202 Flood-frequency studies. _ __ - ______300-302 from San Saba, Tex., to Austin, Tex., Flood-routing studies-_..______295-300 flood-routing studies made_.__ 295 equation for., .. 295 near Bay City, Tex ..._-______229-230 Flood stages, summary of ...... __-_ 284-293 near San Saba, Tex______212-214 Floods, general features .__._-...... 5 near Silver, Tex. __._ 179-181 occurrence - ._... 11 Colorado River basin, flood-routing studies. 296,300 Fort Griffin, Tex., Clear Fork Brazos records. ______175-230 River at...... _. ._.. 130-132 summary of flood stages and discharges. 290-292 Fort Phantom Hill Reservoir near Nugent, Columbus, Tex., Colorado River at- ___ 227-228 Tex-.. . 126-127 Comal River at New Braunfels, Tes....__ 237-238 Fort Worth, Tex., Clear Fork Trinity Comfort, Tex., Guadalupe River at____ 232-233 River at____._._ ...__ 86-88 Concan, Tex., Frio River at___.___.. 263-264 Eagle Mountain Reservoir above....__- 80 Concho River near Paint Rock, Tex-__.. 197-199 West Fork Trinity River at-___ ._ 88-90 near San Angelo, Tex...______194-197 Frio River at Calliham, Tex..._....___ 271-273 Contents, definition of....______..-.__ 5 at Concan, Tex....__ ...__._. 263-264 Corsicana, Tex., Chambers Creek near___ 118-119 near Derby, Tex.....------_...... _ 269-270 Cow Bayou basin, rainfall-runoff studies- _. 310-311 Fulton, Ark., Red River at. 36-37 Cow Bayou subwatershed No. 4 near Bruce- ville, Tex..._ ____ 310,314 0 Crandall, Tex., East Fork Trinity River Gainesville, Tex., Red River near.______29-30 near______112-113 Ganado, Tex., Navidad River near.____ 231-232 Cubic foot per second, definition of__ _ _ 5 Garza-Little Elm Reservoir near Lewisville, Cypress Bayou near Benton, La...... ___ 52-53 Tex.- 98-99 Cypress Creek near Jefferson, Tex_____.. 40 Gatesville, Tex., Leon River at . 159-160 Georgetown, Tex., North Fork San Gabriel D River near_...... 165 Dallas, Tex., Trinity River at_...... 107-108 San Gabriel River at.______165-167 Dam B Reservoir at Town Bluff, Tex.. ... 68-69 Gilliam, La., Black Bayou near..______. 43-44 Data, explanation of-______15 Girvin, Tex., Pecos River near. ______280-281 Deep Red Run near Randlett, Okla_____ 20 Gladewater, Tex., Sabine River near...._.. 60 Del Rio, Tex., Devils River near______281-282 Glen Rose, Tex., Brazos River near-.-.. 143-144 Denison, Tex., Lake Texoma near-..____.. 32-33 Paluxji Creek at------_ 145-146 Denton Creek near Grapevine, Tex__._. 103-104 Goliad, Tex., San Antonio River at- 255-257 near Justin, Tex___.__..__...... 100-102 Graford, Tex., Possum Kingdom Reservoir... 137 Derby, Tex., Frio River near...... _ 269-270 Grand Prairie, Tex., West Fork Trinity Devils River near Del Rio, Tex...-_.... . 281-282 River at-.-______---- 90-91 D'Hanis, Tex., Seco Creek near..._____ 267-269 Grapevine, Tex., Denton Creek near...... 103-104 Discharges, summary of_.______284-293 Grapevine Reservoir near. _ ._-_. 102-103 Dixie, La., Twelvemile Bayou near ...__ 44-45 Grapevine Reservoir near Grapevine, Tex 102-103 Drainage area, definition of.______.. 5 Greenwood, La., Paw Paw Bayou near... 46-47 Durwood, Okla., Washita River near-...- 12,30-32 Guadalupe River above Comal River at New Braunfels, Tex...... - 235-237 E at Comfort, Tex 232-233 Eagle Mountain Reservoir above Fort Worth, at Victoria, Tex..._ _ 241-243 Tex______- .- .__..._..__._ 80 near Spring Branch, Tex... 233-235,314 East Fork San Jacinto River near Cleveland, Guadalupe River basin, rainfall-runoff Tex __. .. _._-_._____.__ 122-123 studies 312-313 East Fork Trinity River near Crandall, Tex. 112-113 records... ._ -_ 232-257 near Lavon, Tex______.___ 111-112 summary of flood stages and dischaiges__ 292-293 Edna, Tex., Lavaca River near______230-231 H Elm Fork Trinity River near Carrollton, Tex....._...... _.__..... 105-107 Haskell, Tex., Lake Stamford near____ 129-130 near Lewisville, Tex...____..__-_ 99-100 Hasse, Tex., Leon River near.. - 157-159 near Sanger, Tex....-______91-93 Henrietta, Tex., Little Wichita River near 25-26 Emory, Tex., Sabine River near -. 56-58,305,313 Hondo, Tex., Hondo Creek near --!- 266-267 Evadale, Tex., Neches River at...______69-70 Hondo Creek near Hondo, Tex. 266-267 INDEX B319

Page Page Honey Creek basin, rainfall-runoff studies. B309-310 Liberty, Tex., Trinity River at______B122 Honey Creek subwatershed No. 12 near Little Elm Creek near Aubrey, Tex..._.. 308,314 McKinney, Tex ._.._ 309,314 Little Elm Creek basin, rainfall-runoff studies. 308 Hords Creek near Valera, Tex______203-204 Little River at Cameron, Tex..._____.- 167-169 Hords Creek Reservoir near Valera, Tex__ 202-203 Little Wichita River near Henrietta, Tex_.._. 25-26 Hosston, La., Kelly Bayou near______41-43 Llano, Tex., Llano River at.-..------_... 218-219 Hubbard Creek near Breckenridge, Tex__ 132-134 Llano River at Llano, Tex...___.__-.. 218-219 Hydraulic and hydrologic analyses, general near Junction, Tex... - 215-217 discussion-..__--.___.__ 295 Logansport, La., Sabine River at 61 Loggy Bayou near Ninock, La..-.. 54-55 Lufkin, Tex., Angelina River near-..,.- 65-66 Index, Tex., Red River at-___._.._._ 35-36 Luling, Tex., San Marcos River at...___ 240-241 International Falcon Reservoir______283 Introduction-..______1-4 M Isle Du Bois Creek near Pilot Point, Tex -_ 93-95 Isohyetal maps showing rainfall totals for Mabank, Tex., Cedar Creek near 115-117 specified months______6,8-9 Mabelle, Tex., Lake Kempnear__ . 21 Mangum, Okla., Salt Fork Red River at. 18 Mathis, Tex., Lake Corpus Christ! near.... 277-278 Jacksboro, Tex., North Creek near..-. 70-72,306,314 Nueces River near_. . 278-280 West Fork Trinity River near__ 72-74,307,314 McKinney, Tex., Honey Creek subwatershed Jacksonville, Tex., Mud Creek near_____ 64-65 No. 12 near---.-.------__ 309,314 Jefferson, Tex., Cypress Creek near______40 Medina Lake near San Antonio, Tex.. 247 Johnson City, Tex., Pedernales River near.- 220-221 Medina River near Pipecreek, Tex. 245-246 Junction, Tex., Llano River near______215-217 near San Antonio, Tex...___.-___ 247-249 Justtn, Tex., Denton Creek near______100-102 Menard, Tex., San Saba River at-. 207-209,311,314 Middle Concho River near Tankersly, Tex.. 187-188 K Midway, Tex., Trinity River near...._- 120-121 Kelly Bayou near Hosston, La______41-43 Minden, La., Bayou Dorcheat near... 48-49 Kountze, Tex., Village Creek near______70 Mineial Wells, Tex., Rock Creek near. 142 Mooringsport, La., Caddo Lake near. 41 Mud Creek near Jacksonville, Tex. 64-65 Laguna, Tex., Nueces River at______257-258 Muskingum method, used in routing flood Lake Colorado City near Colorado City, waves..__--.. 295 Tex...._.______._ 178-179 Lake Corpus Christi near Mathis, Tex___ 277-278 N Lake Fork Sabine River near Quitman, Tex._ 58-60 Lake Houston near Sheldon, Tex______123-124 Navasota River near Bryan, Tex._ 172-173 Lake J. B. Thomas near Vincent, Tex___ 175-176 Navidad River near Ganado, Tex... -. 231-232 Lake Kempnear Mabelle, Tex______21 Neches, Tex., Neches River near.__------63 Lake Kickapoo near Archer City, Tex____ 24-25 Neches River at Evadale, Tex.------69-70 Lake Nasworthy near San Angelo, Tex___ 190-191 near Neches, Tex 63 Lake Stamford near Haskell, Tex _.... 129-130 near Rockland, Tex...... 63-64 Lake Texoma near Denison, Tex______32-33 Neches River basin, records.. 63-70 Lake Travis near Austin, Tex______221-222 summary of flood stages and discharges 287 Lampasas, Tex., Burleson Creek near___ 162-163 New Braunfels, Tex., Guadalupe River above flood damage ..______7-8 Comal River at.--_. .... 235-237 Sulphur Creek above______162 Ninock, La., Loggy Bayou near _ 54-55 Sulphur Creek below.______163 Nolands River at Blum, Tex .. .. - 147-148 Lampasas River at Youngsport, Tex_ ___ 163-165 North Bosque River near Clifton, Tex-_ 154 Laredo, Tex., Rio Grande at...______282 North Concho River near Carlsbad, Tex... 191-193 Lavaca River near Edna, Tex..______230-231 North Creek near Jacksboro, Tex . 70-72,306,314 Lavaca River basin, records______230-232 North Creek basin, rainfall-runoff studies.- 306-307 summary of flood stages and discharges_ - 292 North Fork Red River near Headrick, Okla.. 19 Lavon, Tex., East Fork Trinity River near.. 111-112 North Fork San Gabriel River near George­ Lavon Reservoir near______110-111 town, Tex-.-_-_- .. -- -- 165 Lavon Reservoir near Lavon, Tex._____ 110-111 Nueces River at Laguna, Tex- ____ 257-258 Leander, Tex., South Fork San Gabriel River near Asherton, Tex 260-261 near .______165 near Mathis, Tex...... 278-280 Leon River at Gatesville, Tex______159-160 near Three Rivers, Tex ----- 275-277 near Belton, Tex_.______162 near Tilden, Tex.- - 261-263 near Hasse, Tex _-______157-159 Nueces River basin, records_. 257-280 Lewisville, Tex., Elm Fork Trinity River summary of flood stages and discharges 293 near..-.______99-100 Nugent, Tex., Clear Fork Brazos River at- 127-129 Garza-Little Elm Reservoir near...... Fort Phantom Hill Reservoir near... 126-127 B320 INDEX

Page Page Oak Creek Reservoir near Blackwell, Tex-.-- B182 Sabinal, Tex., Sabinal River near...._.. B264-265 Oakwood, Tex., Trinity River near. _.___ 120 Sabinal River near Sabinal, Tex..--.------. 264-265 Sabine River at Logansport, La..______61 below Toledo Bend, near Burkeville, Tex. 61-62 near Emory, Tex. . 56-58,305,313 Paint Rock, Tex., Concho River near __..-. 197-199 near Gladewater, Tex ------60 Palo Pinto, Tex., Brazos River near..--.-. 138-140 near Ruliff, Tex._.._.._... 62 Palo Pinto Creek near Santo, Tex._____ 140-142 Sabine River basin, rainfall-runoff studies.. 305-306 Paluxy Creek at Glen Rose, Tex.__ _ 145-146 records..____.______56-62 Paw Paw Bayou near Greenwood, La____ 46-47 summary of flood stages and discharges... 287 Pecan Bayou at Brown wood, Tex_____ 205-207 Saline Bayou near Clarence, La...... _-... 55 Pecos River near Girvin, Tex-_-___------280-281 Salt Fork Red River at Mangum, Okla ..... 18 near Shumla, Tex.-.______281 San Angelo, Tex., Concho River near__.. 194-197 Pedernales River near Johnson City, Tex 220-221 Lake Nasworthy near.______.. 190-191 Pilot Point, Tex., Isle Du Bois Creek near... 93-95 San Angelo Reservoir at-----....------193-194 Pipecreek, Tex., Medina River near.____ 245-246 San Angelo Reservoir at San Angelo, Tex_ 193-194 Possum Kingdom Reservoir near Graford, San Antonio, Tex., Medina Lake near__-... 247 Tex- _.----_-.-.._._...... 137 Medina River near______247-249 Posten Bayou near Wardview, La______40 San Antonio River at. .-..---._.... 243-245 Precipitation..._____.______5-7 San Antonio River at Goliad, Tex_...... 255-257 Princeton, Tex., Sister Grove Creek near... 109-110 at San Antonio, Tex~~ - 243-245 near Falls City, Tex._.__...... 249-251 Q San Gabriel River at Georgetown, Tex..... 165-167 San Jacinto River basin, records___. ..- 122-124 Quitman, Tex., Lake Fork Sabine River near. 58-60 summary of flood stages and discharges 289 San Marcos River at Luling, Tex ..._-.. 240-241 R San Saba, Tex., Colorado River near...... 212-214 Rainfall-runoff studies, Cow Bayou basin.... 310 San Saba River at...... - 212 general discussion..______.. 302-304 San Saba River at Menard, Tex,-_ 207-209, 311, 314 Guadalupe River basin______312-313 at San Saba, Tex.-_-_ 212 Honey Creek Basin. ______309 San Saba River basin, rainfall-runoff studies.. 311 Little Elm Creek basin...._....._._ 308 Sanger, Tex., Clear Creek near... 95-98 North Creek basin. ______306 Elm Fork Trinity River near .. -... 91-93 Sabine River basin______305 Santo, Tex., Palo Pinto Creek near--.....-. 140-142 San Saba River basin______311 Sarepta, La., Bayou Bodcau near . 50-51 Sulphur River basin ______304 Seco Creek near D'Hanis, Tex.- 267-269 Waller Creek basin.______311 Selma, Tex., Cibolo Creek at. . - 251-253 West Fork Trinity River basin..____ 307 Seymour, Tex., Brazos River at___.. 124-126 Randlett, Okla., Deep Red Run near...___ 20 Sheldon, Tex., Lake Houston near.. 123-124 Red Chute Bayou near Shreveport, La___ 54 Shreveport, La., Bayou Bodcau Reservoir Red River at Alexandria, La______56 near_-__..-.-. 51-52 at Arthur City, Tex._.___._..__ 34-35 Red Chute Bayou near.. 54 at Fulton, Ark..______36-37 Red River at...... ------48 at Index, Tex...______35-36 Shumla, Tex., Pecos River near 281 at Shreveport, La.______48 Silver, Tex., Colorado River near -- 179-181 flood-crest elevations...______315-316 near Colbert, Okla..______33-34 Sister Grove Creek near Princeton, Tex-_._ 109-110 near Gainesville, Tex...______29-30 Smithville, Tex., Colorado River at-...---- 224-226 near Terral, Okla..______26-28 Somerville, Tex., Yegua Creek near.... 171-172 Red River basin, records.______18-56 South Bend, Tex., Brazos River near-. 135-136 summary of flood stages and discharges. 285-286 South Concho River at Christoval, Tex.... 185-186 Richland, Tex., Richland Creek near...... 117-118 South Fork San Gabriel River near Leander, Richland Creek near Richland, Tex...__ 117-118 Tex.-.. - - 165 Richmond, Tex., Brazos River at. ____ 173-174 Spring Branch, Tex., Guadalupe River Rio Grande at Chapeno, Tex______284 near 233-235, 314 at Laredo, Tex..______282 Spring Creek near Tankersly, Tex...------189-190 Rio Grande basin, records______280-283 summary of flood stages and discharges... 293 Stage-discharge relation, definition of 5 Rock Creek near Mineral Wells, Tex_____ 142 Sulphur Creek above Lampasas, Tex. 162 Rockland, Tex., Neches River near ____ 63-64 below Lampasas, Tex._-- 163 Romayor, Tex., Trinity River at______121 Sulphur River below Texarkana Reservoir Rosser, Tex., Trinity River near. _____ 114-115 near Texarkana, Tex-.-.. -- 39 Ruliff, Tex., Sabine River near..___.__ 62 near Talco, Tex .... 37-38, 304, 313 Runoff, definition of-______5 Sulphur River basin, rainfall-runoff studies 304 INDEX B321

T W Page Page Talco, Tex., Sulphur River near... B37-38, 304, 313 Waco, Tex., Brazos River at. . .- B154-157.298 Tankersly, Tex., Middle Concho River near. 187-188 Waller Creek at 23rd Street at Austin, Tex 311-314 Spring Creek near______189-190 Waller Creek basin, rainfall-runoff studies 311 Terral, Okla., Red River near..._._____ 26-28 Walters, Okla., Cache Creek near______.. 19-20 Wardview, La., Posten Bayou near 40 Texarkana, Tex., Sulphur River below Tex- Washita River near Durwood, Okla. __ 12,30-32 arkana Reservoir near.. _.. __ 39 Waurika, Okla., Beaver Creek near.____... 24 Texarkana Reservoir near______... 38-39 West Fork Trinity River at Port Worth, Tex.. 88-90 Texarkana Reservoir near Texarkana, Tex-_. 38-39 at Grand Prairie, Tex ._ 90-91 Three Rivers, Tex., Nueces River near__ 275-277 near Boyd, Tex..._..-.__...... _.. 78-79 Tilden, Tex., Nueces River near...... ___ 261-263 near Jacksboro, Tex. _____._ 72-74,307,314 Town Bluff, Tex., Dam B Reservoir at___ 68-69 West Fork Trinity River basin, rainfall-runoff Trinity River at Dallas, Tex...-... 107-108 studies-.... . 307 at Liberty, Tex.____._._...... 122 West Nueces River near Brackettville, Tex.. 258-259 at Romayor, Tex______121 Whitney, Tex., Brazos River near... 149-151,295 near Midway, Tex_ __ __.... 120-121 Whitney Reservoir near-..,- 148-149 near Oakwood, Tex_...____..__. 120 Whitney Reservoir near Whitney, Tex.__ 148-149 near Rosser, Tex______114-115 Whitsett, Tex., Atascosa River at -- 273-275 Trinity River basin, records______70-122 Wichita Falls, Tex., Wichita River at __. 22-23 summary of flood stages and discharges. 287-289 Wichita River at Wichita Falls, Tex . 22-23 Twelvemile Bayou near Dixie, La_____ 44-45 Wimberley, Tex., Blanco River at___ 239 Winchell, Tex., Colorado River at. 200-202

Valera, Tex., Hords Creek near______203-204 Yegua Creek near Somerville, Tex...-. 171-172 Hords Creek Reservoir near______202-203 Youngsport, Tex., Lampasas River at _ 163-165 Victoria, Tex., Quadalupe River at_____ 241-243 Village Creek near Kountze, Tex______70 Vincent, Tex., Lake J. B. Thomas near__ 175-176 Zavalla, Tex., Angelina River near. 67-68

U. S. GOVERNMENT PRINTING OFFICE : 1963 O - 656087