VOLUMETRIC SURVEY OF WRIGHT PATMAN LAKE

Prepared for:

U. S. ARMY CORPS OF ENGINEERS, FORT WORTH DISTRICT

In cooperation with

CITY OF TEXARKANA

Prepared by:

The Texas Water Development Board

March 10, 2003 Texas Water Development Board

Craig D. Pedersen, Executive Administrator

Texas Water Development Board

William B. Madden, Chairman Noe Fernandez, Vice-Chairman Charles W. Jenness Charles L. Geren Lynwood Sanders Elaine M. Barrón, M.D.

Authorization for use or reproduction of any original material contained in this publication, i.e. not obtained from other sources, is freely granted. The Board would appreciate acknowledgment.

This report was prepared by the Hydrographic Survey group:

Scot Sullivan, P.E. Duane Thomas Steve Hutton Wayne Elliott Priscilla Hays For more information, please call (512) 936-0848

Published and Distributed by the Texas Water Development Board P.O. Box 13231 Austin, Texas 78711-3231 TABLE OF CONTENTS

INTRODUCTION ...... 1

HISTORY AND GENERAL INFORMATION OF THE RESERVOIR ...... 1

HYDROGRAPHIC SURVEYING TECHNOLOGY ...... 3 GPS Information...... 3 Equipment and Methodology ...... 5 Previous Survey Procedures...... 5

PRE-SURVEY PROCEDURES ...... 7

SURVEY PROCEDURES...... 7 Equipment Calibration and Operation...... 7 Field Survey...... 8 Data Processing...... 10

RESULTS...... 12

SUMMARY...... 12

APPENDICES

APPENDIX A - DEPTH SOUNDER ACCURACY APPENDIX B - RESERVOIR VOLUME TABLE APPENDIX C - RESERVOIR AREA TABLE APPENDIX D - AREA-ELEVATION-CAPACITY GRAPH APPENDIX E - CROSS-SECTION PLOTS

LIST OF FIGURES

FIGURE 1 - LOCATION MAP FIGURE 2 - LOCATION OF SURVEY DATA FIGURE 3 - SHADED RELIEF FIGURE 4 - DEPTH CONTOURS FIGURE 5 - 2-D CONTOUR MAP WRIGHT PATMAN LAKE HYDROGRAPHIC SURVEY REPORT

INTRODUCTION

Staff of the Hydrographic Survey Unit of the Texas Water Development Board (TWDB) conducted a hydrographic survey of Wright Patman Lake during the period December 16 - January 16, 1997. The purpose of the survey was to determine the capacity of the lake at the conservation pool elevation, to perform the survey while the lake was in the flood pool, and to mathematically estimate any remaining volume to the top of the flood pool. From this information, future surveys will be able to determine the location and rates of sediment deposition in the conservation pool over time. Survey results are presented in the following pages in both graphical and tabular form. All elevations presented in this report will be reported in feet above mean sea level based on the National Geodetic Vertical Datum of 1929 (NGVD '29) unless noted otherwise. The conservation pool elevation for Wright Patman Lake is 220.0 feet. At this elevation, the original estimate for the surface area of the lake in 1956 was 20,300 acres and the estimated volume was 145,300 acre-feet of water. At the top of the flood control pool elevation (259.5 feet), the surface area was estimated to cover 119,700 acres with a corresponding capacity of 2,654,300 acre-feet.

HISTORY AND GENERAL INFORMATION OF THE RESERVOIR

Wright Patman Lake and the dam facility are owned by the United States Federal Government and is under the supervision of the United States Army Corps of Engineers, Fort Worth District. The lake is located on the Sulphur River in Bowie and Cass Counties, approximately nine miles southwest of Texarkana, Texas (see Figure 1). Records indicate the drainage area is approximately 3,400 square miles. At the conservation pool elevation, the lake is approximately nineteen miles long. The widest point of the lake (located about 2.5 miles upstream of the dam) is approximately five miles.

The project was authorized by the Flood Control Act on July 24, 1946, of the 79th Congress, 2nd Session. Originally known as Texarkana Dam and Reservoir, the project is part of a

1 comprehensive plan for flood control in the Red River Basin. On December 15, 1973, the President of the United States officially designated the project as Wright Patman Dam and Lake in honor of Congressman Patman of the First Congressional District of Texas.

The water rights to Wright Patman Lake were issued to the City of Texarkana by the State Board of Water Engineers on April 18, 1951. Permit No. 1563 authorized the City of Texarkana to divert 14,572 acre-feet of water annually from Texarkana Reservoir for municipal use. On October 26, 1967, Permit No. 1563 was amended to allow the City of Texarkana to increase the volume of water used annually for municipal use to 20,000 acre-feet and to use 100,000 acre-feet of water annually for industrial use. The City of Texarkana entered into a contractual agreement with the Federal Government that all uses of the stored water are contingent upon the reservoir being maintained between elevations 218.0 and 225.0 feet.

According to the Texas Water Development Board’s Report 126, dam construction began August 20, 1948 and was completed May 19, 1954. Deliberate impoundment began June 27, 1956. The water level of the reservoir reached conservation pool elevation (220.0) in February of 1957. The City of Texarkana began diverting water from the reservoir in December of 1957. The project was designed by the U.S. Army Corps of Engineers, New Orleans District. The general contractors were Edward Peterson Company, Foley Brother, Inc., and Tellepsen Construction Company. The total cost of the project was $35,048,603.00 (June, 1971).

The dam facility is an earth-rolled embankment, 18,500 feet in length, with a maximum height of 100 feet. The crest is at elevation 286.0 feet. The embankment contains 7,370,000 cubic-yards of earthfill. The upstream face of the embankment is protected by 33 inches of rock riprap on a sand and gravel base. The spillway is an uncontrolled concrete chute, 200 feet in length at elevation 259.5 feet. Outlet Works consist of two conduits, each 20 feet in diameter with an invert elevation of 200 feet and are controlled by four gates, each 10 feet by 20 feet.

2 HYDROGRAPHIC SURVEYING TECHNOLOGY

The following sections will describe the theory behind Global Positioning System (GPS) technology and its accuracy. Equipment and methodology used to conduct the subject survey and previous hydrographic surveys are also addressed.

GPS Information

The following is a brief and simple description of Global Positioning System (GPS) technology. GPS is a relatively new technology that uses a network of satellites, maintained in precise orbits around the earth, to determine locations on the surface of the earth. GPS receivers continuously monitor the broadcasts from the satellites to determine the position of the receiver. With only one satellite being monitored, the point in question could be located anywhere on a sphere surrounding the satellite with a radius of the distance measured. The observation of two satellites decreases the possible location to a finite number of points on a circle where the two spheres intersect. With a third satellite observation, the unknown location is reduced to two points where all three spheres intersect. One of these points is obviously in error because its location is in space, and it is ignored. Although three satellite measurements can fairly accurately locate a point on the earth, the minimum number of satellites required to determine a three dimensional position within the required accuracy is four. The fourth measurement compensates for any time discrepancies between the clock on board the satellites and the clock within the GPS receiver.

GPS technology was developed in the 1960's by the United States Air Force and the defense establishment. After program funding in the early 1970's, the initial satellite was launched on February 22, 1978. A four year delay in the launching program occurred after the Challenger space shuttle disaster. In 1989, the launch schedule was resumed. Full operational capability was reached on April 27, 1995 when the NAVSTAR (NAVigation System with Time And Ranging) satellite constellation was composed of 24 Block II satellites. Initial operational capability, a full constellation of 24 satellites, in a combination of Block I (prototype) and Block II satellites, was achieved December 8, 1993. The NAVSTAR satellites provide data based on the World Geodetic System (WGS '84) spherical datum. WGS '84 is essentially identical to NAD '83.

3 The United States Department of Defense (DOD) is currently responsible for implementing and maintaining the satellite constellation. In an attempt to discourage the use of these survey units as a guidance tool by hostile forces, the DOD has implemented means of false signal projection called Selective Availability (S/A). Positions determined by a single receiver when S/A is active result in errors to the actual position of up to 100 meters. These errors can be reduced to centimeters by performing a static survey with two GPS receivers, one of which is set over a point with known coordinates. The errors induced by S/A are time-constant. By monitoring the movements of the satellites over time (one to three hours), the errors can be minimized during post processing of the collected data and the unknown position computed accurately.

Differential GPS (DGPS) can determine positions of moving objects in real-time or "on-the- fly." In the early stages of this program, one GPS receiver was set up over a benchmark with known coordinates established by the hydrographic survey crew. This receiver remained stationary during the survey and monitored the movements of the satellites overhead. Position corrections were determined and transmitted via a radio link once per second to a second GPS receiver located on the moving boat. The boat receiver used these corrections, or differences, in combination with the satellite information it received to determine its differential location. The large positional errors experienced by a single receiver when S/A is active are greatly reduced by utilizing DGPS. The reference receiver calculates satellite corrections based on its known fixed position, which results in positional accuracies within three meters for the moving receiver. DGPS was used to determine horizontal position only. Vertical information was supplied by the depth sounder.

The need for setting up a stationary shore receiver for current surveys has been eliminated with the development of fee-based reference position networks. These networks use a small network of GPS receivers to create differential corrections for a large network of transmitting stations, Wide Area Differential GPS (WADGPS). The TWDB receives this service from ACCQPOINT, a WADGPS correction network over a FM radio broadcast. A small radio receiver purchased from ACCQPOINT, collects positional correction information from the closest broadcast station and provides the data to the GPS receiver on board the hydrographic surveying boat to allow the position to be differentially corrected.

4 Equipment and Methodology

The equipment used in the performance of the hydrographic survey consisted of a 23-foot aluminum tri-hull SeaArk craft with cabin, equipped with twin 90-Horsepower Johnson outboard motors. Installed within the enclosed cabin are an Innerspace Helmsman Display (for navigation), an Innerspace Technology Model 449 Depth Sounder and Model 443 Velocity Profiler, a Trimble Navigation, Inc. 4000SE GPS receiver, an ACCQPOINT FM receiver, and an on-board 486 computer. Power was provided by a water-cooled generator through an in-line uninterruptible power supply. Reference to brand names does not imply endorsement by the TWDB.

The GPS equipment, survey vessel, and depth sounder combine together to provide an efficient hydrographic survey system. As the boat travels across the lake surface, the depth sounder gathers approximately ten readings of the lake bottom each second. The depth readings are stored on the survey vessel's on-board computer along with the corrected positional data generated by the boat's GPS receiver. The daily data files collected are downloaded from the computer and brought to the office for editing after the survey is completed. During editing, bad data is removed or corrected, multiple data points are averaged to get one data point per second, and average depths are converted to elevation readings based on the daily recorded lake elevation on the day the survey was performed. Accurate estimates of the lake volume can be quickly determined by building a 3-D model of the reservoir from the collected data. The level of accuracy is equivalent to or better than previous methods used to determine lake volumes, some of which are discussed below.

Previous Survey Procedures

Originally, reservoir surveys were conducted with a rope stretched across the reservoir along pre-determined range lines. A small boat would manually pole the depth at selected intervals along the rope. Over time, aircraft cable replaced the rope and electronic depth sounders replaced the pole. The boat was hooked to the cable, and depths were again recorded at selected intervals. This method, used mainly by the Soil Conservation Service, worked well for small reservoirs.

5 Larger bodies of water required more involved means to accomplish the survey, mainly due to increased size. Cables could not be stretched across the body of water, so surveying instruments were utilized to determine the path of the boat. Monumentation was set for the end points of each line so the same lines could be used on subsequent surveys. Prior to a survey, each end point had to be located (and sometimes reestablished) in the field and vegetation cleared so that line of sight could be maintained. One surveyor monitored the path of the boat and issued commands via radio to insure that it remained on line while a second surveyor determined depth measurement locations by turning angles. Since it took a major effort to determine each of the points along the line, the depth readings were spaced quite a distance apart. Another major cost was the land surveying required prior to the reservoir survey to locate the range line monuments and clear vegetation.

Electronic positioning systems were the next improvement. If triangulation could determine the boat location by electronic means, then the boat could take continuous depth soundings. A set of microwave transmitters positioned around the lake at known coordinates would allow the boat to receive data and calculate its position. Line of site was required, and the configuration of the transmitters had to be such that the boat remained within the angles of 30 and 150 degrees in respect to the shore stations. The maximum range of most of these systems was about 20 miles. Each shore station had to be accurately located by survey, and the location monumented for future use. Any errors in the land surveying resulted in significant errors that were difficult to detect. Large reservoirs required multiple shore stations and a crew to move the shore stations to the next location as the survey progressed. Land surveying was still a major cost.

Another method used mainly prior to construction utilized aerial photography to generate elevation contours which could then be used to calculate the volume of the reservoir. Fairly accurate results could be obtained, although the vertical accuracy of the aerial topography was generally one- half of the contour interval or + five feet for a ten-foot contour interval. This method could be quite costly and was only applicable in areas that were not inundated.

6 PRE-SURVEY PROCEDURES

The reservoir's surface area was determined prior to the survey by digitizing with AutoCad software the lake's pool boundary (elevation 225.0) from USGS quad sheets. The name of the quad sheets are as follows: WRIGHT PATMAN, TX (Photo-revised 1970), MAUD, TX (Photo-revised 1970), CORLEY, TX (Provisional 1969), ATLANTA NORTH, TX (Provisional 1969), DOUGLASSVILLE, TX (Provisional 1969), and BRYANS MILL, TX (Provisional 1969). The graphic boundary file created was then transformed into the proper datum, from NAD '27 datum to NAD '83, using Environmental Systems Research Institutes's (ESRI) Arc/Info project command with the NADCOM parameters. The area of the lake boundary was checked to verify that the area was the same in both datums. For data processing purposes, each of the contours from elevation 230.0 to 260.0 were also digitized so that the lake could be modeled to the top of the flood pool.

The survey layout was designed by placing survey track lines at 500 foot intervals across the lake. The survey design for this lake required approximately 427 survey lines to be placed along the length of the lake. Survey setup files were created using Coastal Oceangraphics, Inc. Hypack software for each group of track lines that represented a specific section of the lake. The setup files were copied onto diskettes for use during the field survey.

SURVEY PROCEDURES

The following procedures were followed during the hydrographic survey of Wright Patman Lake performed by the TWDB. Information regarding equipment calibration and operation, the field survey, and data processing is presented.

Equipment Calibration and Operation

At the beginning of each surveying day, the depth sounder was calibrated with the Innerspace Velocity Profiler. The Velocity Profiler calculates an average speed of sound through the water column of interest for a designated draft value of the boat (draft is the vertical distance that the boat

7 penetrates the water surface). The draft of the boat was previously determined to average 1.2 ft. The velocity profiler probe is placed in the water to moisten and acclimate the probe. The probe is then raised to the water surface where the depth is zeroed. The probe is lowered on a cable to just below the maximum depth set for the water column, and then raised to the surface. The unit displays an average speed of sound for a given water depth and draft, which is entered into the depth sounder. The depth value on the depth sounder was then checked manually with a measuring tape to ensure that the depth sounder was properly calibrated and operating correctly. During the survey of Wright Patman Lake, the speed of sound in the water column varied daily between 4722 and 4787 feet per second. Based on the measured speed of sound for various depths, and the average speed of sound calculated for the entire water column, the depth sounder is accurate to within +0.2 feet, plus an estimated error of +0.3 feet due to the plane of the boat for a total accuracy of +0.5 feet for any instantaneous reading. These errors tend to be minimized over the entire survey, since some are positive readings and some are negative readings. Further information on these calculations is presented in Appendix A.

During the survey, the onboard GPS receiver was set to a horizontal mask of 10° and a PDOP (Position Dilution of Precision) limit of 7 to maximize the accuracy of horizontal positions. An internal alarm sounds if the PDOP rises above seven to advise the field crew that the horizontal position has degraded to an unacceptable level. The lake’s initialization file used by the Hypack data collection program was setup to convert the collected DGPS positions on-the-fly to state plane coordinates. Both sets of coordinates were then stored in the survey data file.

Field Survey

Data was collected on Wright Patman Lake during the period December 16, 1996 through January 16, 1997. Approximately 282,410 data points were collected over the 610 miles traveled along the pre-planned survey lines and the random data-collection lines. These points were stored digitally on the boat's computer in 513 data files. Data were not collected in areas of shallow water (depths less than 3.0 feet) or with significant obstructions unless these areas represented a large amount of water. Some random data lines were also collected, perpendicular to the survey layout, by the field crew during the survey. Figure 2 shows the actual location of all data collection points.

8 The field survey began the week prior to the Christmas and New Year’s holidays in December of 1996. The water level at that time was 233.71 feet. The field crew decided to collect data in the upper reaches of Elliott and Big Creek while accessability was possible with the high water levels. The water level was high enough for the boat to pass over the low water crossing bridge (County Road 991) at Big Creek. After the holidays, the field crew resumed data collection on January 3, 1997. The water level had dropped to an elevation of 229.62 feet. Staff began collecting data in the head waters of Wright Patman Lake upstream of the Highway 8 bridge. Noting the water levels were continually dropping as the survey was in progress, personnel were rotated weekly, without any stoppage periods for the remainder of the survey. The water level continued to decrease during the survey and was at elevation 224.0 feet on the last day, January 16, 1997.

TWDB staff observed the lake bottom to be fairly uniform with a gentle slope from the shoreline to the center of the lake. The bathemetry of the lake reflected similar characteristics of the terrain or topography surrounding the lake. Several creek channels could be distinguished on the depth sounder’s analog charts. Approximately one-half of the lake was clear of navigational hazards such as standing timber, submerged trees, and stumps. As the water level dropped, navigation became increasingly difficult as more underwater hazards were exposed. Non-oriented, amateur aerial photography was taken mid-way thru the survey by a TWDB staff member to assist in navigating the upper reaches of the lake.

The field crew were exposed to a wide range of climatic conditions during the field survey of Wright Patman Lake. Temperatures ranged from the teens to the 70's. There were several days of snow during the data collection period. At times the winds picked up and there were three foot waves. During an extended period of below freezing temperatures, a thin layer of ice covered parts of various coves.

Data collection in the headwaters was discontinued when the the boat could no longer make transects across the lake due to shallow water, islands, and extensive vegetation. Deep water could still be found in the river channel. The collected data were stored in individual data files for each pre-plotted range line or random data collection event. These files were downloaded to diskettes at the end of each day for future processing.

9 Data Processing

The collected data were down-loaded from diskettes onto the TWDB's computer network. Tape backups were made for future reference as needed. To process the data, the EDIT routine in the Hypack Program was run on each raw data file. Data points such as depth spikes or data with missing depth or positional information were deleted from the file. The depth information collected every 0.1 seconds was averaged to get one reading for each second of data collection. A correction for the lake elevation at the time of data collection was also applied to each file during the EDIT routine. During the survey, the water surface ranged daily from 233.7 to 224.09 feet. After all changes had been made to the raw data file, the edited file was saved with a different extension. After all the files were edited, the edited files were combined into a single data file, representative of the lake, to be used with the GIS software to develop a model of the lake's bottom surface.

The resulting DOS data file was imported into the UNIX operating system used to run Environmental System Research Institutes's (ESRI) Arc/Info GIS software and converted to a MASS points file. The graphic boundary files for each contour between 225.0 and 260.0 previously digitized were also imported. The MASS points and modified contour files were then used to create a Digital Terrain Model (DTM) of the reservoir's bottom surface using Arc/Info's TIN module. The module builds an irregular triangulated network from the data points and the boundary file. This software uses a method known as Delauney's criteria for triangulation. A triangle is formed between three non- uniformly spaced points, including all points along the boundary. If there is another point within the triangle, additional triangles are created until all points lie on the vertex of a triangle. All of the data points are preserved for use in determining the solution of the model by using this method. The generated network of three-dimensional triangular planes represents the actual bottom surface. Once the triangulated irregular network (TIN) is formed, the software then calculates elevations along the triangle surface plane by solving the equations for elevation along each leg of the triangle. Information for the entire reservoir area can be determined from the triangulated irregular network created using this method of interpolation.

The TIN module computed poor area and volume values in between the digitized contour lines above elevation 224.0. This was caused by the lack of data, and the criteria of the software in relation

10 to interpolation procedures. Therefore, a second TIN was built to elevation 240.0. The 230.0 contour file was graphically edited as necessary using the Arc/Edit module and the point coverage file from elevation 226.0 to 230.0 feet. If data points were collected outside the contour file, the contour was modified to include the data points. The contour file in areas of significant sedimentation was also down-sized as deemed necessary based on the data points and the observations of the field crew. The resulting boundary shape was used to develop each of the map presentations of the lake in this report.

There were still some areas where volume and area values could not be calculated by interpolation because of a lack of information along the 230.0 contour line of the reservoir. "Flat triangles" were drawn at these locations. Arc/Info does not use flat triangle areas in the volume or contouring features of the model. Approximately 399 additional points were required for interpolation and contouring of the entire lake surface at elevation 230.0 feet. Volumes and areas were then calculated from this modified TIN for the entire reservoir at one-hundredth of a foot intervals. From elevation 224.0 feet, the surface area and volume values for the lake were mathematically estimated up to elevation 260.0 feet. This was done by first distributing uniformly across the each contour interval, the surface areas digitized from USGS topographic maps. Volumes for each 0.01 interval were calculated by adding to the existing volume, 0.01 of the existing area, and 0.5 of the difference between the existing area and the area value for the volume being calculated. The computed reservoir volume table is presented in Appendix B and the area table in Appendix C. An elevation-area-volume graph is presented in Appendix D.

Other presentations developed from the model include a shaded relief map and a shaded depth range map. To develop these maps, the TIN was converted to a lattice using the TINLATTICE command and then to a polygon coverage using the LATTICEPOLY command. Using the POLYSHADE command, colors were assigned to the range of elevations represented by the polygons that varied from navy to yellow. The lower elevation was assigned the color of navy, and the 230.0 lake elevation was assigned the color of yellow. Different color shades were assigned to the different depths in between. Figure 3 presents the resulting depth shaded representation of the lake. Figure 4 presents a similar version of the same map, using bands of color for selected depth intervals. The color increases in intensity from the shallow contour bands to the deep water bands. Linear filtration algorithms were then applied to the DTM smooth cartographic contours

11 versus using the sharp engineered contours. The resulting contour map of the bottom surface at two- foot intervals is presented in Figure 5.

RESULTS

Results from the 1996 TWDB survey indicate Wright Patman Lake encompasses 18,994 surface acres and contains a volume of 110,900 acre-feet at the conservation pool elevation of 220.0 feet. The shoreline at this elevation was calculated to be 63.0 miles. The deepest point of the lake, elevation 190.56, was located approximately 6,600 feet upstream from the southern most point of the dam. The dead storage volume, or the amount of water below the lowest outlet in the dam, was calculated to be 47 acre-feet based on the low flow outlet invert elevation of 200.00 feet. The conservation storage capacity, or the amount of water between the spillway and the lowest outlet, is unchanged after rounding, 110,900 acre-feet.

SUMMARY

Wright Patman Lake was formed in 1956. Initial storage calculations estimated the volume at the conservation pool elevation of 220.0 feet to be 145,300 acre-feet with a surface area of 20,300 acres. At elevation 230.0 feet, the volume was estimated to be 437,250 acre-feet with a surface area of 38,600 acres.

During the period of December 16 - January 16, 1997, a hydrographic survey of Wright Patman Lake was performed by the Texas Water Development Board's Hydrographic Survey Program. The 1996 survey used technological advances such as differential global positioning system and geographical information system technology to build a model of the reservoir's bathemetry. These advances allowed a survey to be performed quickly and to collect significantly more data of the bathemetry of Wright Patman Lake than previous survey methods. Supplemental contour information from available USGS topographic maps was merged with the collected data to develop a model of the lake to the top of the flood pool. Results indicate that the lake's capacity at the conservation pool elevation of 220.0 feet was 110,900 acre-feet and the area was 18,994 acres. At elevation 230.0 feet,

12 the volume was determined to be 392,740 acre-feet with an area of 34,882 acres. At the top of the flood pool, elevation 259.5 feet, the volume was determined to be 2,507,800 acre-feet with an area of 110,440 acres.

The estimated reduction in storage capacity at elevation 220.0 feet since 1956 was 34,400 acre-ft or 1,147 acre-ft per year. The average annual deposition rate of sediment in the conservation pool of the reservoir can be estimated at 0.34 acre-ft per square mile of drainage area. At elevation 230.0 feet, the reduction in storage calculated was 44,510 acre-feet or 1,483.7 acre-feet per year. The average annual deposition rate of sediment at this elevation can be estimated at 0.436 acre-feet per square mile of drainage area. At elevation 259.5, the reduction is storage calculated was 112,600 acre-feet, or 3,753.3 acre-feet per year. The average annual deposition rate of sediment at this elevation can be estimated at 1.104 acre-feet per square mile of drainage area.

It is difficult to compare the original design information and the TWDB survey performed because little is known about the original design information, the amount of data collected, and the method used to process the collected data. The estimated sedimentation rate in the flood pool computed form the original design information, does not seem realistic. However, the TWDB considers the 1997 survey to be a significant improvement over previous survey procedures and recommends that the same methodology be used in five to ten years or after major flood events to monitor changes to the lake's storage capacity. It is recommended that the survey be scheduled when the lake is between elevations 230.0 and 235.0 feet to facilitate access throughout the lake and to minimize underwater hazards. Performing the survey when the lake is significantly higher into the flood pool does not seem very feasible or worth the added expense. The terrain above elevation 235.0 feet is heavily vegetated, and not conducive to an on-the-water survey.

13 CALCULATION OF DEPTH SOUNDER ACCURACY

This methodology was extracted from the Innerspace Technology, Inc. Operation Manual for the Model 443 Velocity Profiler.

For the following examples, t = (D - d)/V

where: tD = travel time of the sound pulse, in seconds (at depth = D) D = depth, in feet d = draft = 1.2 feet V = speed of sound, in feet per second

To calculate the error of a measurement based on differences in the actual versus average speed of sound, the same equation is used, in this format: D = [t(V)]+d

For the water column from 2 to 30 feet: V = 4832 fps

t30 = (30-1.2)/4832 = 0.00596 sec.

For the water column from 2 to 45 feet: V = 4808 fps

t45 =(45-1.2)/4808 =0.00911 sec.

For a measurement at 20 feet (within the 2 to 30 foot column with V = 4832 fps):

D20 = [((20-1.2)/4832)(4808)]+1.2 = 19.9' (-0.1')

For a measurement at 30 feet (within the 2 to 30 foot column with V = 4832 fps):

D30 = [((30-1.2)/4832)(4808)]+1.2 = 29.9' (-0.1')

For a measurement at 50 feet (within the 2 to 60 foot column with V = 4799 fps):

D50 = [((50-1.2)/4799)(4808)]+1.2 = 50.1' (+0.1')

A-1 For the water column from 2 to 60 feet: V = 4799 fps Assumed V80 = 4785 fps

t60 =(60-1.2)/4799 =0.01225 sec.

For a measurement at 10 feet (within the 2 to 30 foot column with V = 4832 fps):

D10 = [((10-1.2)/4832)(4799)]+1.2 = 9.9' (-0.1')

For a measurement at 30 feet (within the 2 to 30 foot column with V = 4832 fps):

D30 = [((30-1.2)/4832)(4799)]+1.2 = 29.8' (-0.2')

For a measurement at 45 feet (within the 2 to 45 foot column with V = 4808 fps):

D45 = [((45-1.2)/4808)(4799)]+1.2 = 44.9' (-0.1')

For a measurement at 80 feet (outside the 2 to 60 foot column, assumed V = 4785 fps):

D80 = [((80-1.2)/4785)(4799)]+1.2 = 80.2' (+0.2')

A-2 -l

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IJRIGHTPATMN LAKE JANUARY1I'97 SURVEY

VOLI]NEIN ACRE-FEET ELEVAII0NINCREIIENT INTERPoLATED T0 0NE IIUN0REDTHF00'I ELEV. FEET .00 .01 .02 .03 .04 .05 .06 .07 .08 .09

195.9 l l 3 3 l 3 3 a 3 3 196.0 l l 3 3 3 l 3 l 3 3 196.1 J 3 l 3 3 l 3 3 3 3 196.? 3 3 196.3 196.4 196.5 5 5 5 5 5 5 5 t 196.6 5 , 5 , 5 5 5 5 5 , 5 t 5 5 5 5 t 6 l?6.8 6 6 6 196,9 6 6 6 7 197.0 7 7 7 7 7 7 't97.1 7 7 7 7 7 I 197,2 8 6 8 8 a 8 8 E 8 197.3 I E 9 9 9 9 9 9 9 9 9 9 9 9 't0 197,5 9 10 10 10 10 10 10 10 -10 197,6 t0 10 t0 10 10 1t 11 11 11 11 197.7 11 11 11 11 11 l1 11 11 12 197.8 12 197,9 13 1! 13 1l 13 13 13 196,0 13 198.1 14 15 15 15 15 15 1t 15 198.2 15 15 16 16 16 16 .16 t6 '17 198.3 16 16 17 17 17 17 17 17 17 198.1 17 16 1E 18 t8 18 1E 18 18 19 198.5 19 19 19 z0 20 z0 19E.6 20 20 20 20 20 21 194.7 ?2 zz 22 22 198,8 23 24 24 ; 194.9 24 24 24 25 25 25 26 199.0 26 26 ?6 27 27 199.1 27 28 ?a za 2A 29 199.2 29 30 30 l0 l0 5o l1 t_ 11 31 32 32 32 33 199.3 35 33 l3 34 a4 14 199.' 35 35 35 35 l6 36 !6 36 37 t_ 199.6 37 3E 5E 39 39 39 199,7 39 39 40 199.8 12 42 42 13 43 13 t_ 199.9 15 15 200.0 48 48 1A 4a 200.1 50 5o 50 t0 51 51 t1 ,2 200,2 52 52 53 53 54 51 54 55 55 l 200.3 55 5' 56 56 ,7 5a 58 200.1 59 59 59 60 60 60 61 200.5 62 6? 63 63 6I 65 L- 200.6 65 & 67 68 68 200.7 69 69 70 70 70 71 71 72 t_ ?00.8 73 73 75 75 75 76 t- )

RESERV0IRV0LUl,lE TABLE

IRIGII'I PAII'IANLAIG JANUARY1997 SURVEY

VOLUI,IEIN ACRE-FEET ELEVATIONINCREIIENT INTERPOLATED TO OIIEHIJIIDREOTH FOOT ELEV.FEET .OO .01 .0? .01 ,04 .05 .06 .07 .04 .09

200.9 77 n 70 7a 7A 79 80 80 ) 201.0 80 81 81 8? a2 85 83 83 a4 a4 20t.t 85 at 86 86 a7 87 a7 88 88 89 2A1,2 89 90 90 91 91 9? 92 93 93 201.1 95 9' 96 96 98 98 ?41.1 100 100 101 101 102 102 101 103 104 201.5 104 10t 10t 106 106 107 147 108 109 109 201,6 110 110 111 111 112 114 r 1t 241,7 11t 116 117 117 118 1ta 119 120 12Q 201.8 121 12? 123 124 125 126 126 ?01.9 128 124 129 110 lt0 151 151 13? lll 133 202.0 134 115 115 156 137 118 138 139 t40 202.1 141 112 112 113 115 115 116 202,Z 118 150 1t0 151 152 153 153 154 155 20?,3 156 156 157 158 159 159 160 '161 162 165 202.1 161 144 165 166 167 167 168 169 174 - 171 202.5 172 172 173 175 176 177 1V 178 1n 202,6 180 181 142 181 184 184 185 186 147 188 'l9L 202.7 189 190 191 192 193 195 195 196 197 202.4 198 200 201 z0? 203 204 205 206 207 202.9 208 249 210 211 212 213 214 215 216 217 203,0 214 219 ?21 222 224 225 226 227 224 203.1 230 231 233 236 2!7 238 239 zo3.z 210 211 212 211 24' 246 247 244 249 2r1 ?05,5 252 253 2t1 255 257 258 259 260 ?61 261 ?03.1 264 265 266 26 270 274 27' 277 278 zn 281 283 285 286 287 249 201,6 290 293 296 297 299 100 301 303 ?03,7 30tr 306 307 309 110 511 r15 414 316 a17 203.8 319 325 3?6 3Za !?9 5t1 203.9 336 337 339 340 311 345 347 348 204.0 550 352 551 555 3t8 363 165 204.1 367 368 370 372 374 3n 3n 180 342 201.2 384 385 l8a 569 391 393 595 397 198 400 244,3 10? 406 408 411 113 415 241.1 421 12t 125 1?6 QA L0 432 131 136 138 241,5 150 452 456 4t8 241.6 460 463 465 4E 241.7 442 4U 4U 4A 190 192 495 t01 244,4 501 506 508 510 513 ,17 . 519 5?? 524 241.9 5?6 529 511 536 538 541 515 . 548 205.0 553 555 558 560 t65 567 570 572 205.1 574 580 t83 545 588 590 ,93 596 598 205.2 601 509 612 617 622 625 205.3 624 631 631 636 639 642 645 651 653 205,4 656 659 662 665 6a 671 677 680 683 205.5 646 689 695 69E 702 705 708 711 711 zar,5 717 721 724 727 730 731 737 245.7 711 754 7i7 761 764 n1 775 na 742 ?05.8 786 749 793 800 804 808 811 815 8i9 RESERVOIRVOLUI4E TABLE

!/RIGNTPATI'IAN LAKE JANUARY1997 SLJRVEY

VOLI]MEIII ACRE'FEET ELEVATI0NINCREI,IENT IIITEiPOLAIED T0 0flE NUNDREDTIl ELEV. FEET .00 .01 ,42 .03 .05 .06 .47 .08 .09

245,9 a23 827 031 835 838 u2 446 850 85t 859 246,A 863 867 871 875 880 884 888 891 497 901 246.1 906 910 91' 9t9 924 929 9ll 9t0 943 9r2 957 962 967 972 9fl 2 987 992 246,3 1001 1008 1013 lol9 1021 1029 l0l5 1040 1052 246,4 1457 1063 1069 1071 1080 1086 1A9Z 1098 1110 2A6.5 1116 1123 1129 113t 111? 1144 1155 1161 1168 1175 ?06.6 1181 1188 1195 1202 1?09 1216 1223 1230 1?37 1245 ?06,7 1252 1260 1267 1275 128? 1290 1298 1305 1311 1321 206.8 1329 1337 1345 1t53 1361 1370 1378 1386 1395 1401 206.9 141? 1120 1429 1438 1455 1473 1442 ?07,4 1500 1509 1518 15?8 1537 1546 1556 1563 15n 1585 2A7.1 1594 1604 1614 1624 1631 1654 1641 207.2 1694 1705 171' 17?6 1716 1757 1764 1779 1790 207.3 1801 1811 1A22 1814 1845 1855 1867 1878 1890 1901 207.4 1913 1924 1936 1914 1959 1971 1983 1995 2AO7 - 2019 707,1 e0l1 2044 2056 206a ?061 2A93 2106 ?114 2131 ?144 t- ?07,6 2157 2169 21gZ 2195 2208 2235 ?248 2261 ??75 ?07.7 2248 Zt1Z 2315 23?9 2313 2156 2370 238/ 2398 2112 207.8 2126 2440 2469 2143 ?498 2512 2127 2542 t- ?07.9 ?171 2186 ?601 2616 2631 ?646 2661 2677 2692 2747 208.0 ?7?3 zEa ?n1 2769 2785 2801 2817 2833 2UA 2461 208.1 2881 2497 2913 2929 2915 2962 2974 2995. l01t 204.2 3045 1061 3078 3095 311? 3129 3146 3t6l 3180 3197 t- 3355 337? 208.3 3215 12t2 3219 3267 1284 3t02 1319 3337 208.4 3190 1108 t426 3111 3462 3480 t499 3r17 35t5 208.5 357? 3591 3609 !626 3616 a665 3684 3701 3722 4741 t- 208.6 3760 37'n 3f98 3818 la37 38t6 ta16 3895 3915 393t 20a,7 3954 3974 3994 4A\4 1054 113' 208.8 4155 1176 1217 1?ra 4279 1300 4321 131? t- 204.9 4363 1384 4405 1512 4514 1556 209.0 1577 1599 1621 4613 4665 1647 4710 1732 249.1 1799 1422 1415 $67 4890 1913 1936 4959 1942 5005 209,2 5029 5052 5076 5099 5121 5116 5170 5191 5214 t?42 L- 5137 5462 5147 209.3 5266 5290 t31t 53t9 5361 5384 51.15 209,4 tt 12 ,537 5588 5613 5639 5661 5690 ,715 5741 209,5 5767 'n3 5419 5816 5A72 t898 59?' ,95? 5974 6005 r 249.6 60a2 6059 6086 6141 6169 6196 6224 6252 6200 249.7 6108 6336 6365 6l9l 6122 6450 6t08 6537 6566 209.8 6595 6625 6654 6684 6713 6713 6773 6801 5833 6464 209.9 6491 6925 6955 6986 7017 7048 7479 7110 7173 r 7193 ?10.0 7?O4 7236 7264 7299 7l31 7363 7396 7424 7460 210.1 7125 TtrA 7591 7624 7657 7690 7723 7757 7790 fa24 214.? 7858 7492 7926 7960 8028 8063 8097 8132 a167 r 210.3 8202 4237 4272 8507 8342 8378 8413 8449 ua, 8520 ?10.4 0556 8595 4629 8665 8702 8Zl8 an5 8812 8849 8886 210.5 4923 0960 4997 9015 9072 9110 9114 91E6 9224 9262 r ?14.6 9500 9339 9377 9116 91r1 9493 9532 9r71 9610 9650 214.7 9689 9729 9764 9808 9448 9884 9924 9964 10009 10049 r 210.8 10090 10130 10171 10212 14253 10294 10355 14377 10414 10150 RESERVOIRVOLUI,IE IABLE

lJRIGIITPATI.IAN LAKE JANIJARY1997 SURVEY

VOLUI'IEIN ACRE.FEET ELEVAT]ONINCREMENT INTERPOLATEOTO ONEI]UNDREDTH FOOT ELEV. FEET .00 .01 .02 .03 .05 .!6 .47 .08 .09

210,9 10501 10545 10585 14627 10669 14711 10754 10n6 1083t 10882 211.0 10924 11010 11053 11097 11110 11144 11227 11271 11315 211,1 11559 11403 11191 11536 11580 11625 11670 11715 11760 ?11.2 11805 11850 1189t 11911 11986 12032 1?a7A 12124 12169 12?16 211.3 12262 12108 12355 12101 12444 12491 12511 12588 12636 12543 211,1 12734 12775 12425 12A73 1?9?1 12969 13017 13065 1t1t3 1316? 211.5 1l?10 13259 1t300 13356 13405 13454 13504 1t555 13601 13652 ?11.6 1370? 13752 1340? 13452 13902 13953 14003 14054 14105 11116 211,7 11?06 14258 11309 14360 11112 14515 11567 211.8 11723 14828 14880 11933 14986 150t9 15092 15145 15198 211.9 15251 1t305 15358 1511? 15466 1rr20 15574 15625 156a2 15736 15791 15845 15900 1591' 16009 16065 161?0 16175 162t0 16246 212.1 16311 16397 16453 16509 16565 16621 16677 16733 16790 16E47 16903 15960 17A17 17074 17131 17199 17246 17304 1f361 17119 212.3 17535 17593 17611 17710 17768 17A27 17886 1f91t 18004 212.4 16063 1412? 18182 1A?41 18301 18561 14421 18481 18541 - 18601 212.1 16661 18722 10783 18845 18904 18965 19026 19088 19119 19?10 ?12,6 19272 19331 19396 19458 195e0 19r42 19707 19769 19832 212.7 19895 19958 20021 20084 20148 2A211 20275 20319 2olAZ ?0466 212,4 20531 20595 20659 ?0784 20853 20918 20981 2104A 2111! 21?.9 21174 21244 21349 21375 21111 ?1507 21573 2163? 21706 2177? 213,0 219t9 21906 219E 2241! 221A7 ?2174 22211 22309 22377 22144 213.1 22512 22581 22649 22717 22746 22454 229?3 22992 23061 23130 213.2 23200 23269 25119 23108 2t47P 23519 23619 ?3689 23760 23830 213.3 23901 23972 2401t 2111' 24146 21254 21329 21401 24473 2114' 213,4 24617 24690 21762 24435 24908 24941 21454 21127 ?5200 25?71 713.5 25347 ?51?1 25495 25569 25613 25717 25792 256 ?1941 26416 ?13.6 26091 26166 26?41 26316 26392 26167 26513 26419 2669' 26771 213.7 26U7 26921 27000 270n 27154 ?7240 27307 27145 27162 2f5t9 213.4 27617 ?7694 27n2 27A50 27928 28006 28085 2s163 24212 ?43?0 213.9 28399 24474 24157 2&36 24716 24795 2e475 ?8955 29035 79115 214,4 29195 29?75 29356 29L6 29r17 ?9598 29679 29760 29A11 ?99?3 21tr.1 30001 10086 10168 10250 30]2 30415 10498 105E0 30663 30746 ?14.2 30429 30913 30996 11080 31161 t1z4a 31352 31417 t1502 31586 211.3 31671 31n7 31412 31927 !2013 32099 3218' 32272 32a5A 32415 3?532 32619 32706 32793 32881 32969 33017 33145 33231 33323 211.5 33111 33500 31590 33679 33769 13858 33914 34039 311?9 31219 214,6 r4310 34401 31192 34544 3164 31767 34A59 34951 35043 15116 214.7 35224 35321 35414 35507 3t601 35694 35788 35842 35976 36474 211.8 36165 36260 36555 36!50 36641 36736 36832 3692A 37421 214,9 37121 37217 37!11 37411 37508 37606 3no3 17801 37A99 37997 21r.4 58095 38193 34292 38391 38490 la5a9 366EE 38788 18888 34947 215.1 39088 39188 39284 39389 39489 19590 39692 39n3 39A91 39996 215.2 10098 40200 14302 40405 40507 40610 14711 40416 40920 11423 215.3 41127 41231 41335 11618 41753 41858 11964 12469 ?15.1 1?174 42280 42386 12192 12599 12705 42412 12919 130?6 43133 215.5 13210 43444 13116 43561 43672 $7AA 4t849 43998 215.6 1L?5 11135 44145 1165' 11765 41AE 449U6 15097 45208 11319 215.7 45430 15542 45651 $a7a 15990 46103 16216 46329 16142 ?15.8 16555 46668 46742 1,6496 17014 47121 47239 47353 1716A 17543 RESEiVOIRVOLI]IIE TASLE

JANUARY1997 SURVEY

VOLUI,IEIN ACRE-FEET ELEVATIONINCREME}IT !NTERPOLATED TOONE HUNDREDTT FOOI ELEV.FEET .OO .01 .a2 .03 .04 .05 .06 .07 .08 .09

215.9 1769A 47414 1n29 48045 44161 18277 483t3 48510 48627 ?16,0 48861 44974 19095 19213 49567 19686 49923 216.1 5AA42 54161 50281 50400 50520 50640 50760 50881 51001 51122 216,2 t1?13 t 1364 5148t 51607 51729 516t1 51973 52095 5??18 5234A ?16.3 52163 52546 52710 52811 5?917 51081 53205 t3330 53155 53579 216,4 '37A4 t3430 ,3955 54081 51?07 54333 ,4419 54586 54713 t4840 216,5 54967 55095 ,5179 tr608 55736 55866 55995 56121 216,6 56251 56381 56514 56611 56775 56906 57437 t7168 57?99 57131 216.7 5756t 57595 57427 '796A 50093 5A225 58158 58492 54625 18759 216.4 58893 ,9427 59162 59296 59111 59566 ,9701 598t6 59972 60108 216,9 60214 60380 60516 60653 6a79a 6t927 61064 612A1 61339 217.0 61615 61753 61492 62A3A 6?169 62308 62440 625A7 62727 62466 217.1 65AA7 63147 64247 $12a 63569 61710 6J851 63992 64131 64276 217,2 61417 64560 61702 61844 64947 65130 65273 65416 61559 65703 217.4 65A47 65990 66135 66279 66423 66568 66713 66a58 6700a 217.1 67294 67545 677i1 67878 68024 64171 68t18 68165 - 68612 217.5 68759 68907 69055 69203 6t150 69499 70091 217.6 70213 70392 7054? 7Q691 70a41 70991 71141 71292 71442 71593 217.7 71744 71595 72416 72197 77349 7?501 72652 72aA4 7?9r7 t11A9 217.4 8261 73111 /3567 73720 73573 71027 711AA 743t4 71188 217.9 74796 749t1 75105 75?60 75115 75r7A 71725 75881 76436 76192 ?18.0 76t48 76501 76661 76a17 76971 77131 i72AA 77446 77603 218.1 7791A 74476 78234 7819! 78551 78710 78469 79027 79146 79316 214,2 n50' n665 79A25 799A5 80145 80305 80466 80627 aa7a7 80948 214.3 81110 41271 81435 81594 81756 81918 82080 A2242 8?105 42567 214.4 a2B0 82893 83056 83219 8338t 83546 83710 8t874 84038 44202 214.5 A4346 84530 34695 84860 450?4 85190 85155 85520 85686 85851 218.6 A6017 86183 a$19 86515 86641 86848 97011 8718r 8734A 87515 218.7 A7682 878t0 84017 8a185 88353 88520 88688 88a57 89025 49191 218.8 89363 89532 89741 89870 90039 902A9 90379 90549 94719 90889 218.t 91060 91231 91101 91572 91714 91915 92087 92?58 921J4 92643 219.0 92775 92917 93120 93293 94466 93639 93812 93986 941t3 219.1 91508 91642 94856 95011 9r?06 95381 95556 95731 95907 96081 219.? 96259 96445 96411 96788 97314 97495 97673 97850 219.3 98028 98206 98384 98563 9A741 9a920 99099 99278 99636 219.4 99816 99996 100180 100360 100540 100720 100900 101080 101260 101440 219.5 101620 101800 101980 102170 10?550 102530 102710 102890 103080 103260 219,6 103440 103610 103810 103990 101180 104160 101540 1A180 104910 105100 219,7 105?80 105170 105650 105840 106020 106210 106390 106580 106760 106950 219.4 14711! '108630 147320 107510 107700 107880 108070 108260 108440 108420 219.9 109010 109200 109380 109170 109760 109950 110140 110330 I105?0 110710 224.A 110900 111090 111280 111470 11r660 111850 11?040 112230 11?124 112620 220.1 112810 113000 t13190 113380 113580 113770 113960 114150 114350 111510 220.? 114740 114930 115t20 115320 115t10 115710 r 15t00 116100 116290 224.3 1166a0 116480 117080 117270 117170 117a6A 11786A 118060 11A260 1184t0 220.1 1186t0 1188t0 1i901.0 119240 119440 11961A 119840 t20040 120214 120410 220.' 120610 120830 121010 121230 121430 1?1640 1?1U0 122A10 1??214 12?114 ??0.6 122610 1228l'4 123040 123?10 123/.50 123650 123850 121050 124260 121460 22A.7 12L40 121870 125070 125280 r?5180 125680 1?5890 126090 12$40 126500 ?24,8 126710 126920 127120 127330 1?75tA 1?n10 12n50 1?a$0 128t60 124574 RESERVOIRVOLIIME IASLE

,nruliv 1992sunvev

VOLUME III ACRE.FEET ELEVATIOIIINCREI'IENT INTERPOLATED TO OIIEHUNDREDTH FOOT ELEV.FEET .OO .01 .02 .03 _05 .06 .07 .oo ,09

224,9 128780 128990 129190 129100 129610 1294?0 130010 130210 130450 130660 221,4 130870 131080 131290 111500 131710 t11920 13?130 132310 13?r6A 13?770 221,1 13?980 133190 133400 133620 133830 1a4A1A 134?60 13117Q 134690 134900 221.2 1a512A 115330 115540 135760 135980 1361t0 136410 136620 136840 117060 221.3 137270 137ryg 137710 13n30 118140 138360 1t8580 158800 159020 13921A ??1.1 119450 139670 139890 140110 140330 110550 114774 140990 111220 221,5 141660 141880 142100 14232a 112140 112r/0 11299A 113210 111660 2?1.6 143800 144330 144550 111780 115000 145?30 r15150 145680 145900 221.7 146130 146550 146184 146810 117030 11726A 117190 11771a 117910 11417A 221.5 148,100 1486?A 148850 149080 149110 1t0000 150230 150460 221.9 1t0690 150920 151150 151380 151610 15r840 152A7A 1t2100 152540 152770 222,0 155000 153230 151460 153700 153930 151160 154400 r54610 154060 1t5100 222.1 155330 155570 155800 156040 156270 156510 156710 156980 157210 157450 zzz.z 1t7680 157920 158160 158400 154630 1t8470 159110 159t40 15tt80 159020 222.3 160060 160100 160540 160770 161010 161250 161190 161230 161970 162214 222.1 162150 162690 16?930 163170 16t4t0 163660 16!900 164140 164380 164620 2?2,5 164860 16t1t 0 155350 165590 165810 166080 1f6324 166560 166810 167050 ??2,6 167J00 167540 167790 168010 168280 168t20 164774 169010 169260 169510 222.7 169750 170000 170250 170490 170990 171210 171480 171ZJq 171980 222,4 1722!0 17?1AA 172724 172970 1732?0 1rJ17A 173720 17J970 174224 222.9 174720 17197A 1n?20 175170 175720 1n970 176220 176174 176724 17697A 223.0 1n220 17Tl?0 1n980 17A2tA 178/.80 l7AnO 178980 1n240 2?3.1 179740 180000 1802t0 180500 180760 181010 181260 181520 181770 182010 223,? 1A22Aa 1A2540 142790 183050 183100 183560 183810 181070 181330 184t80 ?e3,3 1848.(0 185100 185150 185610 185870 1861?0 186180 186640 186900 197160 223.1 187420 187670 187930 188190 1884t0 188710 168970 189250 149494 189750 223,5 190010 190270 190530 190790 191050 191310 191570 191840 192100 192360 223.6 19?6?0 192880 193140 193410 193674 193930 191240 194720 223.7 195?50 195510 1957AO 196040 196110 195570 196840 197100 19rJ70 197630 2?3.4 197900 194150 198410 198700 198960 199230 199500 199760 ?00030 200300 223,9 200560 200830 201100 ?01370 201610 201900 202170 202440 202714 242940 224.0 203250 203520 203800 204080 244350 204630 201910 205180 205460 205744 224.1 206020 206290 206570 206a50 207130 207410 2076A0 207960 ?08240 204520 221.2 208800 209080 209360 2A9610 20992A 210200 210480 210760 211040 ?11320 224.3 211600 2l l8a0 212160 2124A 2127?0 213000 211280 ?15560 213440 211120 221.1 211400 214690 214974 215250 215530 215424 216100 ?16380 216644 216940 224.5 21784 217114 217790 218080 ?14360 21t%40 218930 219210 219500 2197AA 221.6 220060 220350 220610 220920 221240 221190 221nO 2?2464 222310 222644 ?21.7 222910 223200 ??3180 223V0 22106A ?21310 224630 ?21914 225200 225490 224.4 2?5n0 226060 226350 22664A 226920 227210 ?2n40 227780 224070 ?28360 221.9 224650 2?491! 229230 22951A 229800 2t0090 230380 230670 234960 231250 225,0 23154A 231830 82124 25?110 232700 232990 ?11280 ?33 4 234150 225,1 234440 23472A 231020 ?55310 235600 235900 236190 236480 236774 2a7A6A 225.2 237310 237650 237940 23A230 445?0 88a20 ?59110 23940a 239700 239994 ?25,3 210?80 240580 240870 241160 211160 241z50 212010 24814 242630 ?12930 225.1 213220 243520 241810 ?11110 ?41404 211700 ?41990 21r290 21.5580 245880 ?25.5 216180 21&70 216770 247A60 217360 247660 ?17960 244250 218550 248850 225.6 219114 24974A 250040 250330 2506t0 250930 ?51?30 251530 251830 225.7 75?120 212124 ?52724 253020 253320 25362A 253920 251224 251120 251a2A 225.8 255120 25542A 255720 256020 256320 256620 256920 217220 257520 257420 RESERVOIRVOLI]ME TABLE

JAN!ARY1997 SIJRVEY

VOLLJI,IEIN ACRE,FEET ELEVATIONINCREI{ENI !NTERPOI.ATEDTO ONEIIUNDREDTN FOOI ELEV. FEET .00 .01 .02 .03 ,04 .05 .06 ,07 .08

?25.9 2541?A ?54130 254714 259030 259330 ?r9(34 259910 264244 260540 260840 226,0 261114 261154 261754 262050 262360 ?62660 26?960 263274 263570 263A7A 226,1 264144 261144 261790 265090 2654AA 261700 266000 266110 266610 26692A ?26.2 267220 ?67530 267840 268140 ?6&54 ?68750 269060 269160 269670 269 0 226.1 270?80 ?70590 270900 271200 271514 ?71820 272130 2721JA 272710 zEA,A 226.4 273360 273660 273970 271240 274590 274900 27121A 27r524 2f5420 ?7613A ??6.5 276110 276750 277060 ?7874 277640 2n990 278300 274610 27A920 ?7923A ?26.6 279510 279950 280160 ?au7a 280780 281100 281410 2417?0 242030 ?82310 242654 ?42970 24t28a 283590 ?85900 244220 284t30 284840 285150 281170 226.4 ?a57AA 286090 ?8&14 286724 287030 24rJ50 287660 207980 288?90 288600 225.9 284924 249234 289550 ?89860 290180 29U94 290410 291120 291110 291710 22f.A 292074 29EaA 292700 2930?0 293330 293650 ?93970 294?40 291600 ?94920 2?7,1 ?9r240 29r5r0 29r870 296190 296500 ?9442A ?97110 297460 2977A0 ?98090 ?27.2 298110 294730 299010 299370 ?99690 300010 300320 500640 300960 301280 2?7.3 !01600 3019?0 302210 502560 3028a0 505200 1035?0 103840 304174 301190 504610 305130 305450 30rn0 106090 306420 346740 307060 307180 J07700 ??7.5 5080?0 308350 108670 308990 109120 309610 J09960 3102a0 310610 310930 227.6 311250 t11580 311900 312244 112550 31?660 t11200 311520 313850 314180 227.7 31/.500 314420 31t150 t15480 315800 316130 316450 t16780 317100 t1743A 227,A 31776A t18080 318410 518740 319060 119t90 31972A t?0040 320370 !20700 227,9 321010 t21360 321640 32?010 322310 122670 323000 124320 323650 t23980 224.0 3?4510 324640 324970 325300 325630 ,25960 3?6290 326620 326950 327280 224.1 127610 327910 328270 328600 128930 329264 329590 329920 110250 310t80 ?28.2 1309?0 331250 M580 331910 t12240 332580 332910 333210 lrl570 333910 220.3 t31210 331570 111910 335240 r15570 315910 336240 336570 3t6910 337210 224.1 337580 337910 138210 lta580 3t8910 339250 3!9580 339920 340250 310590 224.5 310924 341264 341600 341930 312270 34?600 34?914 3112AA 343610 34t950 224"6 344294 311624 344964 345300 34\640 !45970 146310 346610 316990 a4rj20 224.7 347660 348000 348140 3486a0 349020 t49360 349700 3500t0 350370 350710 ??4.8 351050 1t1390 551rjo 352070 552410 352750 t53090 353430 353770 3t4110 228.9 354800 355110 555480 355820 156160 156500 356840 !57180 3r7r30 229.0 357870 358210 358550 358900 359240 359580 3t9920 360270 350610 360950 ??9.1 361300 !61610 361980 162330 362670 161020 363360 165700 164050 364390 ??9.? 361710 365080 365130 365r/0 366120 366460 366810 367160 367544 367850 ?29,3 368190 368540 168890 369230 169580 369930 370270 37A6?0 370974 371310 ?29.1 371660 372010 372360 372700 373050 373100 373750 371140 37441A 374790 2?9.5 375110 475490 Snuo 476190 376510 376890 377210 377590 377910 37A29A 229.6 374640 174990 379340 379694 380040 380390 344710 181090 381440 141790 229.7 342140 382500 382850 383200 1835t0 383900 3U254 184610 t64960 185310 229.a 185660 386020 386370 384720 t67080 387430 387780 t88140 388490 388840 229.9 389200 589550 389910 590260 390620 !94970 19ll20 591640 392030 a92390 210.0 392710 393100 593460 393820 3941A0 591550 394910 395270 195650 39t990 230.1 396350 396720 397080 397440 397800 398160 398t30 398890 399260 399620 230.2 399980 400350 400710 401060 401810 402170 40?540 402900 403270 210.3 403640 104000 404370 405100 405470 405640 1A5ZlO 406574 406940 ) 230.4 107310 407680 108050 408420 404790 409160 409530 409900 410270 1.1061.0 230.5 411010 411180 111750 4121?O 412194 112840 413210 411610 41t980 111350 ?to.6 111rl0 415100 415470 415850 116224 416600 417314 11n?0 118090 230.7 114170 418440 119220 419600 119970 4?0350 1?4720 421100 421180 421a50 230.8 422230 122610 422990 44364 123740 121120 4245AA 424840 425260 12r&A RESERVO]RVOLUI.{E TASLE

JAIIUARY1997 SURVEY

VOLLJI,lEIN ACRE-FEEI ELEVATIONINCREI'IEIIT IIITERPOLATED TO O]!E8UNDREDTN FOOT ELE!.IEET .00 .01 .42 .05 .05 .06 .07 .06 .09

230,9 126020 426400 426740 127160 427540 1?n20 128100 428680 129460 429440 2t1.0 429420 430210 410590 130970 43t350 431710 132120 432500 132490 433270 231,1 433650 434040 1J1124 1134810 435190 435580 415960 436550 136730 4371?0 231.2 437500 437890 438280 438660 419050 439110 419830 440210 231.3 441344 442164 442540 442930 4133?0 413710 ?31.4 445274 41r650 446060 446840 417230 448010 118410 448800 ?31.5 419194 449580 450370 154760 4t1160 451550 4t1950 152310 452740 2t1.6 453130 153530 454920 4543?0 451710 4t5110 455510 455900 456300 456700 231.7 157494 157190 457494 1.58290 458680 4t9080 459460 459840 460280 460680 231.8 461080 461480 461840 162?80 162640 463080 463100 461840 4612A0 4616A0 231.9 465080 465480 461490 166290 467100 167500 167900 468300 468710 ?3?.0 469110 469524 169920 1703?0 474740 471130 171510 171910 47?350 472760 173160 1Br7A 48980 474380 475?00 475600 476010 476420 176434 232.2 17723A 478050 470460 178a70 1n280 4E0100 480510 480920 232.3 481t10 481744 482150 142560 $2970 483380 401E00 484210 184620 485030 232.1 485440 485860 186270 486680 4a7100 487510 457930 488340 488750 449174 489580 490000 490410 490830 491210 491660 192080 192190 49?910 491550 232,6 193710 494580 495000 495120 495830 196250 196670 tstoso t gtito 232,7 497930 49a150 498770 499190 199610 t00030 500450 500870 501?90 501710 232.4 502110 502550 502980 505400 t0!820 ,04210 504660 505090 505510 505910 232,9 506160 506780 507210 507630 t08060 t08/.80 5089r0 509310 509260 510180 233.0 510610 511010 511460 511890 512310 512740 513170 511600 t14020 511150 233.1 514880 515310 515710 516r60 516590 517020 517450 517880 t18310 518710 231,2 519170 519600 t20030 5e0460 520900 521330 521760 522190 522620 52!060 213.1 ,23190 523920 524350 524790 5252?0 525650 526090 526524 ,26960 52n9A 233,4 527EZ1 52A?60 526700 529150 5?9570 t30000 530110 t30870 531510 5J1750 233.5 532180 53?620 533060 553t00 533930 ,34370 t34810 53525A 555690 5t6110 233,6 536560 537000 537140 537680 518!20 538760 539200 5t9650 540090 540530 ztt.7 540970 5/.1110 541850 542290 ,42740 541180 543620 ,44464 511110 '11950 211.8 545400 545840 546280 516730 517170 517620 548060 548510 5489t0 549400 233.9 549840 550290 550710 551180 551630 t52080 552520 552974 551120 55t860 234,0 t54310 551760 555210 555660 556110 556560 557000 557454 ,57900 558150 244,1 558800 559260 559700 560160 560610 561060 561510 561960 562110 562474 231.2 563320 5$n0 561220 564680 t65130 t65580 566010 566,{90 566910 t67400 231.3 t67850 568310 564760 569220 569640 t70130 570590 571040 571500 571960 234,4 572410 572470 52J330 573780 ,74240 574700 575160 ,7r620 576080 '76130 ?11.5 576994 57f450 57n10 578370 578830 ,n290 579750 580?10 580670 t81130 251.6 5E1600 582060 582520 582980 583440 583900 584370 584830 585290 585760 231.7 ,862?0 586640 5871t0 547610 t88080 t88t/r0 589000 589470 589940 590400 234.4 t90870 591330 591800 592260 592710 593200 593660 594130 594600 595070 231.9 ,95540 596000 596170 596910 597110 t97880 598350 5988?0 599280 '99764 235.0 600220 600700 601170 601640 602110 602t80 6030t0 603520 601990 601170 ?35,1 605410 605840 606560 606430 607300 60280 604250 604720 609200 235.? 609674 610150 610620 611100 611570 612050 6125ZO 611000 615480 613950 235.3 61434 611910 615380 615860 616310 616420 612J00 61n74 618250 61aBA ?35.4 619214 619690 620170 6?06t0 621130 621610 622090 622570 623050 623530 235.5 6?1414 624190 621974 625150 6?5940 626420 6?6900 621560 627E70 628150 235.6 628430 629320 629400 630280 630770 631250 631710 632220 632710 631190 235.7 633680 614160 81654 635140 6356?0 636110 656600 617080 637570 638060 235.8 638550 639030 6J9520 640010 &0500 640990 611180 611970 612160 612914 RESERVOIRVOLUHE TAgIE

JANUARY1997 SURVEY

VoLUl,lEIN ACRE-FEET ELEVATIONINCRE'!ENT IIITERPOLATED TOONE HL]NOREOTN ELEV. FEET .00 .01 .02 .03 .05 .06 .07 .08 .09

235,9 6139?A 611120 645400 645890 646384 616970 61n60 647A50 236.0 644350 648840 619330 649420 650t20 650810 651300 551800 612294 652790 ?36.1 65t280 6t3740 654270 654760 6t5260 655760 656250 656750 657210 657740 ?36.2 658240 6t8730 659230 659730 660224 660720 661224 661720 662220 662720 236.3 661210 663714 664210 6652f0 665710 666?14 666710 667?10 667710 235.1 664210 664724 669?20 669720 670224 670720 671220 671734 67?210 672770 6B?14 67:J710 671240 671750 675254 67r760 676?60 676764 677?70 677774 236.6 67A2AA 674740 679290 679800 680300 680810 581320 681820 682330 682840 236.7 681140 64t850 684160 644470 685380 68t890 686400 686900 647410 647924 236.8 688130 648940 689450 689960 690480 690990 691500 692010 692524 693030 236.9 693510 691574 69t080 695590 696620 697654 698160 237.0 698680 699190 699714 700220 700740 741250 701770 742?AO 702800 7033?0 237.1 703830 701350 704860 705380 705900 7A&24 706910 707450 707974 700190 237.2 709010 749510 714440 710560 711080 711600 712120 712610 711160 713680 237.3 711210 714730 715250 715774 716290 7t6At0 717310 f1T860 718180 716900 ?37.4 719130 719950 724170 721000 771r20 722Q40 722570 f23090 723620 f21110 237.' 724670 725200 725720 726250 7?6770 7?rJ00 727414 728350 72AAA0 729410 237.6 729910 730460 rl0990 ZJ1520 732050 rJ2580 rJ5100 733610 734160 n4Lgo n5zz0 n5750 n6zao 26810 737310 737470 nuaa 7]8940 739470 740000 237,A 710530 741060 741600 742130 74264 713190 7137J0 744264 744790 745rr0 237,9 715860 716400 746930 744000 718510 719070 749614 750140 750680 218.0 751210 751750 752290 752420 753164 753900 751110 751944 755110 716ArA 238.1 756590 757130 757670 754210 754754 n9290 759A30 760374 760910 761114 ?38.2 761990 762530 763070 763610 7641r4 764690 765240 76574A 766320 766864 238.3 f 6nt0 768190 759010 769544 770120 770670 771214 771760 77844 238.1 77?8r0 771390 773910 775430 775540 7761?0 776674 n7220 777764 218.5 778310 774460 779410 779960 780500 281050 781600 742154 7A2700 783250 234.6 783800 781350 781900 7854t0 786000 786550 787100 747650 788200 784750 234.7 749300 789860 790110 790960 791510 792074 792620 793170 n3B0 794244 218.8 n4840 79t390 795910 796500 797050 797610 794160 794720 799?aA Tngta 234.9 800190 800940 801500 802060 802610 801170 803730 804290 8048/.0 805100 239.4 805960 806520 807080 807640 808200 808760 809320 809880 810440 811000 239.1 811560 812124 812680 813240 813800 811360 814930 815490 816050 816610 239.2 817180 817740 a1at00 818460 819430 819990 820560 4211?0 821590 AZZZ50 239.3 422420 821380 823950 824510 825080 425610 826210 426740 a27340 827910 239.4 828480 829050 829610 810180 850250 a31320 811890 852460 85t0?0 833590 239.5 814160 a\4730 815100 835870 856440 837010 837580 858160 818230 839300 ?39,6 839870 841010 441580 842160 g4?730 a4ll00 843840 81.1.450 8450?0 ?39.7 845600 u6170 u6750 847:320 8/.7900 u4170 449050 849620 850200 850770 239.8 8t13t0 851920 852500 853080 851660 851230 851810 855190 85t960 856540 239.9 857120 85./00 858280 858860 4r9440 860020 860600 861180 a61760 86814 240.0 462920 063500 864080 864660 865250 865810 866420 867000 867580 864170 210.1 868750 869340 869920 870510 871100 871640 a7z?70 a72 a 813110 871014 244,2 874620 att210 875800 876180 476970 477560 878150 878744 879130 479924 244.3 880510 8E1100 861690 aa2280 882870 883460 88/.060 884650 885?40 885830 210.4 886410 887020 887610 886210 844800 849190 689990 890t80 891180 491774 892374 a92964 893560 891i160 894750 89t350 895950 896540 897114 897740 ?40.6 898t10 898940 899510 900110 900730 9011t0 901930 90?550 903130 903210 ?10.7 904330 904930 905530 906110 906740 947]1! 907940 90851r0 909110 909750 ?40-8 910350 910960 91!560 912160 912770 913170 913980 914580 915190 915790 RESERVOIRVOLUTIE TABLE

JANL]ARI1997 SL]RVEY

VOLUI'IEIN ACRE.FEET ELEVATIONINCREIIEIT INTERPOLA'IEDTO ONEHt]NDREDTII FOOI ELEV.FEET .OO .01 .02 .03 .0t .06 ,a7 .04 ,09

?40.9 916400 917000 917614 918??0 9t8820 919430 920040 924650 9?1254 921460 ?41.0 922470 923080 924694 924300 924910 925524 926130 926740 92ZJ A 927960 241,1 924574 929180 929794 930400 931020 9t1610 93??40 93?050 9$174 931080 241.2 934694 935310 935920 936544 937150 937774 938380 939000 939610 940230 211.3 940840 941460 91?480 912694 943310 941930 944550 945160 915780 916100 241.1 917020 c17610 914250 948880 949500 950120 954714 95860 951900 9t2600 ?41.5 953220 953840 951170 955090 9rr71A 956330 956960 957t80 950200 958830 241,6 959150 950080 960700 961320 961950 962580 963200 961810 961110 165080 211,7 965710 966330 966960 967590 968224 968840 969170 970100 970730 971360 211.8 971990 972620 973250 973880 974514 975110 975770 976100 97784 977660 241.9 978290 978930 979560 980190 9aoa2o 9d1460 982090 942724 98tt60 983990 212.0 984610 985260 965900 986550 947t70 987800 988440 949080 989710 990350 ?42,1 990980 991620 992260 992900 991540 994170 994610 995450 996090 996710 212.2 99870 998010 9986t0 999290 999930 1000600 1001200 1001900 1002500 1003100 212.3 1005800 1004400 1005100 1005700 1006100 1007000 1007600 1008300 1008900 1009600 't!16000 242,4 1010200 1010900 1011500 101??00 1012800 101t400 1014100 1014700 1015400 242.5 1016700 101ZJ00 1018000 1018600 1019t00 1019900 1020600 1021200 102r900 1022i00 21?,6 102t200 1023800 102/.500 1025100 1025000 1026400 102710A 1027700 1028400 1029000 212.7 1029700 1030300 1031000 1031600 1032300 1013000 10t1600 1034300 1034900 1035600 242.A 166200 1016900 1017500 1038200 1038800 1039500 1040200 1040800 1041500 1042100 242.9 1042800 1041100 1044100 1044800 104t400 1016100 1046700 1047400 1048100 1048700 241.0 1049400 1050000 1050700 1051100 1052000 1052700 1053100 1054000 10t4200 1055300 24t,1 1056000 1056700 1057100 1058000 105a700 1059300 1060000 1060700 1061100 1062000 ?13.? t06?600 1063300 1051000 106,1600 1065100 1066000 1066600 1067J00 1068000 1068600 ?13.3 1069300 1070000 1070700 1071300 1072000 1072700 1073300 1071000 1071744 1075t00 213.1 1076000 1076700 1a77400 1078000 1078700 1079400 1080000 1040700 1081/.00 1082100 243.5 1082700 108t400 1084100 1084800 1085100 1086100 1086800 1087500 1088100 1088800 ?13.6 1089500 1090200 1090800 1091500 1092200 1092900 1093500 1094200 1094900 1095600 213,7 1096300 1096900 1097600 1098100 1099000 1099700 1100300 1101000 1101700 1102400 243.8 1103100 110t700 1104400 1105100 1105800 1106500 1107200 1107800 1108500 I109?00 24t.9 1109900 1110600 1111300 1111900 1112600 1111300 1114000 1114700 r115400 1116100 244,4 1116700 1117400 1118100 1118800 i119500 1120200 1120900 11?1600 1122200 1122900 211,1 1121600 1124100 1125000 1125700 11?6400 t 127100 1127800 1128500 1129100 1129800 244.2 1130500 1131200 1131900 1132600 1133300 1134000 11347AA 111t400 1136100 11t6800 244.3 1137500 1114200 1138800 1139500 1140200 1110900 1141600 1142300 1143000 1141700 1145100 1145800 1146500 1147200 1117900 1148600 1149100 11t0000 1150700 211.5 1151400 1152100 1152800 1151500 1154200 1151900 1155500 1156100 1157000 1157700 211.6 1158400 1159100 1159800 1160500 1161200 1161900 1162600 1163100 1164000 1164700 ?44.7 1155400 1166100 1166900 1167600 1168100 1169000 r 169700 1170100 1171100 117t800 ?44.A 1172500 112J200 1175900 1171600 1175300 1176000 1176800 1177500 117a2AA 1178900 211.9 1179600 1180300 r 181000 1181700 11a2400 1183100 1185900 1184600 1185300 1106000 241.0 1186700 1107400 118a100 I t 88800 1189600 1190100 1191000 1191700 11924AA 1193100 245.1 1193800 1194600 1195500 1196000 i196700 119710A 1198100 1198900 1199500 1200300 21'.? t?01000 1201700 1202100 1203?00 1203900 1204600 1205500 1206000 1206800 1207t00 215.3 1208200 120A900 1209600 1210100 1211100 121!800 1212500 t?13200 1214000 1211700 215.4 1215400 1216100 1216900 1217600 1218300 1219000 1219a00 1220500 1??1200 1221900 215.5 1222704 1223400 1221144 1?21400 1225600 1226300 12270A0 122n00 1228500 1229244 215.6 1229944 123A7AO 1211400 1232100 1252800 1?31600 1231300 1215000 1235800 1236500 215.7 187?Aa 1238000 1238700 1239400 1240100 1240900 1211600 1U8Aa 1243100 r243800 ?45.8 124540 1245500 1?16000 1246744 1217544 1?44?OO 1214900 1249744 1?50400 1251?OA R€SERVOIRVOLLJI4E TABL€

JANIJARY1997 SURVEY

VOLUI.IEIN ACRE'FEET ELEVATIOiII IICR EI'iE NT INTERPOLATEDTO ONENL]NDREDTII FOOT ELEV.FEET .OO .0t .02 .01 .05 .06 .47 .08 .09

21'.9 1251900 1?5?600 1?53100 1254100 1254800 1255600 1256300 1?r7AO0 12t7800 1258500 216.0 1259300 1260000 1260700 1261500 1262200 1263000 1263700 1?61140 126t200 t265900 216.1 1266704 1?67100 1264100 1268900 1269600 1270444 1271100 1271900 127260A 12T33AA 246.? 1274104 1274800 1271600 1?76300 12n100 1277AAA 1278600 1279300 1280000 1280800 216.3 1281500 1282300 1283000 1283800 1241500 1285300 1286000 1286000 1287500 1288300 246.1 1289000 1289800 1290500 1291t00 1292000 t292800 1293500 1294500 1295000 1295600 ?46,' 1296500 1297300 1298000 1298800 1?99500 1100300 1t01000 1301800 1302500 1303300 216.6 1304000 1301000 1305600 1106300 1307100 1307800 1308600 1309300 t3t0100 1310800 246,7 13|600 1312100 ttt 3100 1J13900 1314600 1315400 1116200 1316900 1317700 1318400 246,4 1319200 1319900 1320700 1321t00 13?2204 1323000 112t700 1324500 l3?5300 1t26000 ?16.9 13?6E00 1327600 t3?8500 1t29100 1329400 1330600 t3lt400 1552100 135?900 1511700 217.0 1354400 1t55200 1336000 15t6700 11t7500 r550500 1t39000 133t800 1340600 1341300 ?47,1 1342100 1342900 1t43600 1344400 13/t5200 1345900 1316700 13/.7500 134A?00 1149000 217.2 1149800 1350500 1351300 1152100 1352900 1353600 1351100 1155200 1355900 t356700 217.3 1357500 t356500 1t59000 859600 1160600 1361300 1362100 1t62900 136t700 1364444 217.1 1365200 1366000 1366800 1367500 l]66100 1t69100 1t69900 1t70700 1371400 1472290 217.5 1373000 13rJ800 1374500 1375300 1176100 1376900 137nO0 1t78400 1a7920A 1380000 247.6 1380800 1381600 1382300 138t100 1383900 1384700 1t85500 1386?00 1187000 1387800 247.7 1388600 1389/.00 1390200 1390900 1391700 1192500 1593300 1t94100 1194900 1595600 217.a 1596400 1397204 159E000 1398800 1399600 1400100 1401100 1101900 1402700 1103500 217.9 1404100 1405100 1405900 1406700 1407500 140a200 1409000 1409800 1410600 1111100 248.0 141?200 1413000 1411800 1414600 1415400 1416100 1416900 141n00 1418500 1419300 21A.1 1420100 1420900 1421700 1422500 1423300 t424100 1424900 1125700 1426500 1427300 24A.2 1428100 1428900 1429600 1450400 1431?00 14!2000 14t2800 1433600 1434400 1431200 ?4A,a 1436000 1436800 1137600 1438400 1139?00 1440000 1440800 1441600 1442400 1443200 214.1 1444000 1&1804 14l.5600 1116100 1117200 1118000 1448400 1449600 1450400 1451200 248.5 14t2000 1452900 1453704 1454500 1455300 1156100 1456900 1$n00 1158500 1459t00 24A.6 1460100 1460900 1161744 1162100 1465300 1163700 1466600 1167100 24A.7 1464200 1469000 1469800 1470600 1471400 1472200 1473000 1/.23800 1471700 117tr00 214.4 1476340 1177140 1177900 1174740 1479500 1480300 1481100 1482000 1482800 1483600 214.9 11U4AA 14a52AO 1486000 1486a00 1$n00 1488500 1489300 1490100 1490900 1491700 249.0 1192644 1491140 1491?00 1495000 1495400 1196600 1497500 1498100 1499100 1499904 249.1 1500700 1501500 1502100 1503200 1504000 1504800 150t700 1506500 1507300 1508100 219.2 1508900 1509800 1510600 1511100 1t12200 1513100 1513900 1514700 1515500 1t16100 249.3 1517200 1518000 1518800 1519600 1520500 1t21300 1522tOO 1t23000 1521800 1524644 249.4 1525100 1526300 1527100 1527900 1528700 1529600 1530400 1531200 1532100 1532900 ?19.' 1533700 1534500 1535400 r516200 1537000 1t37900 1538700 1519500 15/.0400 1511200 219,6 1542000 1542900 1543700 1544500 1545400 1546200 1547000 1547900 1148700 1519500 219.7 1550400 1551200 1552000 1552900 1553700 1554500 1555400 1556200 1557000 1557900 249.A 1558700 1559600 1560400 1561200 1562100 1562900 1563800 1564600 1565100 1566300 219.9 1567100 1568000 1568A00 1569600 1570500 1571300 1572200 1573000 157J800 1574700 250.0 1575500 157&AA 15n200 1578100 1578900 1579700 1580600 15E1400 1582300 1583100 ?5A.1 1t8{000 1584800 158t700 1586t00 1567400 158a200 1589100 1589900 1590800 1591600 254.2 1592500 1593100 1594200 1t9t000 1595900 1596700 1597600 15981i00 1599100 1600100 254.3 1601000 1601400 1602744 1603500 1601100 1505200 1606100 1607000 1607800 1608700 25a.4 1609500 1610400 1611200 1612100 1612900 1611800 1611704 161t500 1616400 1617?00 250.5 1614100 161a900 1619A00 1620700 1621500 1622400 1623200 1624100 1625000 1625800 25a.6 1626744 1627640 162a1AA 1629100 1630100 16t1000 1631900 1552700 1613600 1631500 254.7 1635100 1636200 1637000 1637900 1656E00 1539500 1640500 1611100 16!2200 1643100 254.4 1644000 1644800 1615700 16466aO 1617100 1648300 1649204 1650100 1650900 16t1800 RESERVO]RVOLL]ME TABLE

JANIJARY1997 SURVEY

VOLIJIIEIN ACRE.FEET ELEVA'IIONINCNE ENI INTERPOLATEOIO ONENIJNOREDTII FOOT ELEV.FEET .OO .0t .02 .03 .04 .05 .06 .47 .08 .09

250.9 1652700 1653500 t654400 1655100 1656100 1657000 1657900 r658800 1619604 I 660500 251.0 1661400 166?300 t663100 1664000 1664900 1555700 1666600 1557500 1668400 1669200 251.1 1670100 1671000 1671900 1672000 164600 1674500 1675400 1676300 1677100 1678000 251.2 1678900 1679400 1680700 1681500 1682400 1683300 1684200 1685100 1665900 1686800 ?51.3 1687700 1684500 16E9500 1690100 r691200 16t2100 1693000 1693900 1694800 1695600 ?r1.4 1696500 1697100 1698300 1699200 1700100 1701000 1701800 1702700 1703600 1744500 2r1"' 1705400 1706300 1747?00 1708100 1708900 t709800 1710700 1711600 1712500 1713400 251.6 1714300 1711200 1716100 t7t7000 1217800 171A700 1719644 1720500 1721100 1722300 251,7 1723240 1724104 r72t000 17?5900 1726aAa 1727700 1725600 17295AA 1730400 1731200 25t.8 17t21AA 17f,1000 1733900 1734A00 17:J5700 1736600 1737500 1738400 17]9t00 1740200 751.9 174r100 171?A0o 17429A4 1743800 1711700 1745600 1746500 1748300 1749200 25?.0 1750100 1751000 1751900 17t2800 1753700 1751500 1n5500 1756400 1757:100 1758300 2t?.1 1759200 t760lo0 1761000 1761900 1762800 1761700 1764644 176t500 1756400 176n04 252,2 1764200 1769100 r 770000 177A900 1771900 1nZAOO 17n740 1775100 177&AA 252,3 1777f,00 1778204 1179100 1700000 1781000 1781900 1782000 1783700 1284600 1785500 252.1 178UtA0 r78r300 1788300 1789200 r790100 1791000 1791900 1792400 1793744 994700 252.5 1n56AA 1796500 1797444 1798300 1799?00 1800200 1801100 1802000 1802900 1803800 ?52.6 1801800 1805700 1806600 1807500 1808400 1809400 1810300 1811200 1812100 1813000 2r7,7 1814000 1814900 1815800 1816700 1817700 1818600 1819500 1820400 1821400 1822300 zr?.a 1823200 1824100 10?5100 1826000 1826900 1827a00 10?8800 1829700 1810600 1831500 212.9 1832500 1831400 1834300 1855t00 1836200 1817100 1818000 1839000 1839900 1840800 253.A 1841800 1812740 1841600 1844600 r845t00 1846400 184nAA 1848300 1849200 1850100 253.1 1851100 1852000 185t000 1853900 185/.800 1855600 1856700 1857600 1058600 1859500 253.2 1460400 1861400 1862300 1863200 186.4200 1865100 1866100 1a67000 1867900 1868t00 213.3 1869800 1870800 1871700 1472600 147_3600 1824500 1875500 1876400 182rj00 1878100 ?r1,4 1979700 1880200 1881100 188?100 1885000 18a3900 1884900 1885800 1886800 1887700 253.5 1888700 1889600 1890600 1891t00 1892400 1893400 1894100 1895300 1896200 1897200 253.6 189a100 1899100 1900000 1901000 1901900 190?900 1903800 1904800 1905700 1906700 ?53.7 1907600 1908600 1909500 1910500 1911400 1912400 1913300 191/.300 1915200 1916200 2r3.8 1917100 1918100 1919100 1920000 1921000 1921900 1922900 1921800 1924800 1925744 253.9 1926700 192n00 1928600 1929600 1930500 1911500 1932400 1933400 1934AA 1935300 251.0 1936300 1937204 1938200 1939200 1940100 1941100 1942000 1943000 1941000 1911900 251.1 1945900 1946900 1947800 1948800 1949700 1950700 19r17AA 1952600 1953600 1954600 251.2 1955500 1956500 1957500 1958400 19t9400 1960400 1961300 1962300 1963300 1964200 251.3 1955200 1966200 1967100 1968100 1969100 1970100 1971000 1972AAA 192J000 192i900 254.4 1971900 1975900 1976800 19nAOO 1978400 1979800 1980700 19a17AA 1982700 1981700 254.5 19A4600 1985600 1986600 1987600 1984500 1989500 1990500 1991500 199UAA 1993400 254,6 1994400 1t95400 1996300 1997300 1998300 19t9r00 2000100 2001200 2002200 2003200 ?51.7 2004200 2005200 2006100 2007100 2008100 2009100 2010100 2011000 2012000 2011000 251-8 2014000 2015000 2016000 2016900 2017900 2018900 2019900 ?020900 ?021900 za??aaa ?r4.9 20?3800 2024800 2025800 20e6800 2027E00 2028a00 2029700 2030700 2031700 2432740 255.0 ?033700 ?0347AA 2035700 2036700 2a3nOO 2018600 ?039600 ?040600 2011600 201?600 ?55.1 2041600 2011640 2045600 2046600 ?047600 2048600 2049600 2050500 20t1500 20t2t00 255,2 2053500 2054500 2055500 2056500 2057500 2058500 2059500 2060500 2061500 2062500 255.3 2063500 2064500 2065500 2056500 2067rAa 2068t00 2069500 2070500 2071500 2072500 ?rr.4 207f 00 2074100 2075500 2A76500 2077500 2078500 zo79to0 2080500 2061t00 20E2500 255.5 2081500 2084500 2085500 2086500 2087500 208a500 2089500 2090500 2091500 2092500 255.6 2091500 2094500 2095600 ?096600 2097600 2098500 2099600 2100600 2101500 ?102600 255.7 2r03600 2104600 2105600 2106600 2107600 2108700 2109700 2110700 2111700 ?11?700 2122aAa 2t5.a ?113700 2114700 2115700 2 6800 2117AaA 21r8800 2r19800 2r20800 2121800 RESERVOIRVOIL]IE TASLE

JANI]ARY]997 SURVEY

VOLUI.IEIN ACRE.FEET ELEVATIONINCREI,IEIIT INTERPOLAT'D TO ONENUNDREDTI] FOO'I ELEV.FEEI .OO .01 .02 .01 .a4 .05 .06 .07 .08 .09

255.9 2123800 2121900 21?5900 21269AA 21?n00 21289AA 21?9900 2131000 2132000 2131000 256,0 21310A0 2135000 2136000 2137100 2t18100 21t9100 2140100 ?11110A 2142200 214?AA 256,1 ?1142AA ?1152AA 2146204 2147300 2144300 2149300 2150!00 2151300 2152400 21t3400 256.2 2111100 ?155400 2156500 2157500 2158500 2159500 2160600 ?161600 2162600 2163600 ?16.3 2164700 2165700 2165700 21677AA ?168800 2169800 2170800 2171900 2172944 2173900 256.1 2171900 2176000 2177000 ?178000 ?1it9100 2180100 2181100 21A2100 2181200 21A12AO 256.5 2185200 ?186100 21a200 ?188300 2189400 219040A 2191400 21925AA 2191500 2194500 256.6 2195600 ?196600 ?197600 2198700 21997A0 2200800 2201000 2202aaa 2203900 22019AA 256,7 220t900 ??07000 2208000 2209100 2210100 22|100 2212240 221a20A 2214200 2215300 216,8 2216300 2217100 2214400 22195A0 2220500 2221500 22226AA 2223600 2224700 22?r70A ?56.9 2226600 22ZfO00 2228400 2Z299AA 2?t0900 2232AAO 2231000 2231100 2235140 2?36?00 257,0 ?23720A 2218200 2239100 2240300 2211100 2212100 ?243500 22115A0 2245600 2246600 ?57.1 2247700 2218700 2249800 2250600 2?51900 2?52900 2251000 2255ooo 2?56100 22571A0 ?57.2 ZZ58?00 2259200 2260300 2261300 2262444 2263500 2264500 2265600 2266600 22677AA 2t7.3 2268700 2269800 2274500 22719A0 2272900 2274000 2275144 2276100 2277200 227A200 257.4 22793A0 2280t00 2281400 ??82500 2265500 22a46A0 2285600 2266700 22a7AA0 2?88800 257.5 2289900 ??90900 229?00A 2293100 2294100 Z29r2aA ?296300 2297300 229UAA ??99!00 257.6 2300500 2301600 2302600 2103700 2301800 2t0t800 2306900 2108000 2309000 2310100 257.7 2311?00 2312200 ?313300 2314400 2315400 2316500 231f600 2318600 2319700 2t20800 257.8 2121800 ?122900 824400 ?t25000 2326100 2327ZOO 2328!00 2329300 2330400 2331500 257,9 2332t00 ?t33600 2334700 ?535800 21t6800 2337900 2319000 2340100 2341100 ?312?00 258.0 2313300 2344400 2345100 2t46t00 2!47600 234A7AA 2319700 2350600 2351900 ?353000 258.1 2351100 2155100 2356200 2]57300 2t58,100 ?t59400 2160500 2361600 462744 2361800 254,2 236t9Aa 865900 2367000 236a100 869204 ?570500 2371tOO 237240A 2373500 23746AA 258.1 ?375700 2376800 B77AAA 2378900 ?380000 2381100 23a22AA 2381300 2384400 2385400 258.4 ?!86500 23A7600 2388700 2389800 2390900 2192000 2393100 2391100 2395200 2396300 258.5 2397100 2398500 2399600 2400700 2401800 ?10290A 2404000 2105000 2406100 21A72A0 218.6 2408300 21A9100 2110t00 2411600 ?412744 2413800 2414900 2/.16000 2117100 211a2AA 258.7 24193A0 212A400 2121500 ?122600 u8?3704 ?421700 2425800 21269AA 2428000 ?129100 2t8.8 ?$02AA 2L13A0 2432440 21335AA 2131600 2435700 2416800 243n00 2439000 2440100 254.9 2441200 244230a 24$4AA 2444500 2115600 2116700 2417aAA 2449000 2450100 21.51200 259,0 2152300 2453100 2451500 2455600 2456700 2157Aa0 2458900 2160000 2161144 2462200 ?59.1 2463300 2161400 2165500 216{600 2167400 246A900 2470000 2171100 2172200 21n3AA 259,2 2171100 2475500 2476600 247T.OO uTeaaa 2480000 ?181100 24A2?AA ?465500 218440A ?59.3 2485500 2486600 214n00 248a900 ?490000 2491100 2492240 2493300 2191100 249rr00 259,4 24967Aa 2197AAO 2494900 2500000 2501100 2502200 2503400 2504500 2505600 2506700 259.5 ?507800 2t09000 2510100 2511200 2512300 2513400 2514600 2515700 2516800 2517900 2r9.6 2519000 25?0?00 2521500 252?400 2t23500 2521600 2525800 2526900 2t2A000 25291aO 219.7 2530300 ?531100 2532500 25t3600 2t34AA0 2515900 2557000 25tE100 2539100 2540400 259.8 2541500 2512700 2543800 2544900 ?546000 2547200 254A300 2519100 ?550600 2551700 259.9 2552800 ?553900 ?555100 ?556200 2557300 25t8500 ?rr96a0 2560700 2561900 2t63000 260.0 25641A0 TEXAS9ATER DEVELOPI4EIIT SOARD Ap. 2A 1917 . RESERVOIRAREA TABLE

9RTGhIPATIIAN TAKE JAIUARY1997 SURVEI

AREAIIi ACRES ELEVATIOIIINCRET4ENT IS IIITERPOLATEOIO OIIEIIUIIDREDTN F@T ETEV.FEET .OO .01 .02 .03 .0t .06 .07 .08 .09

19!.0 191.1 191.2 191.3 191,4 191.5 191.6 191,7 191,8 191,9 192.0 192,1 192.2 192.3 192.4 192.5 192.6 192,7 't92.8 192,9 191,0 lvj.1 1,2 1,3 1.4 19!.t 193,6 't93,f 19t,4 193,9 1%,0 194,'l 194,2 194.3 1 t 191,1 I I I 1 1 l1,I 1 t 194.5 1 I I 1 1 t1,| I I 194.6 1 ! I t 1 tl,I I t 19$.7 1 I I I 1 t11 I I 194,8 1 1 I I 1 t11 I 1 ,| 194,9 1 I I 1 t11 I t 195.0 1 1 t I 1 1i1 t I 1 .1 1 1 1 I 1 1tl 1 1 1.2 z 2Zz z 195.1 2 2 2Z 2 19r.4 ? 2 2 2 2 195.5 2 z z 2 195.6 2 2 2 z z z ? 195.7 2 2 z z 2 2 195.8 z 2 2 2 z2 3 RESERVOIRAR€A TABLE

9RIGIIIPATI'IAII LAKE JAIiUARV1997 SURVEY

AREAIN ACNIS ELEVATTOIIIIICREI'IENT IS INTERPOLATEDTOOIIE HIINOREDTH IOOT ELEV. FEET .00 .01 .02 .03 .04 .05 .06 .07 .08 .09

195.9 5 5 3 3 3 3 J 3 196.0 5 3 l 3 3 5 196.1 l 5 3 3 l 3 3 3 3 196.2 5 3 3 3 3 3 3 196.3 5 3 1 3 3 3 3 5 196.5 196.6 196.7 196.8 5 5 5 5 5 5 5 , t 5 5 t 5 5 197.0 , , t 5 5 5 5 5 5 197.1 5 5 5 5 , 5 6 197.2 6 6 6 197.3 6 6 6 6 6 197.4 6 6 6 6 7 7 7 7 197.5 7 7 7 7 7 7 197.6 7 7 7 7 7 7 7 7 E 197.f 8 8 6 8 197.4 8 8 E 197,9 9 9 198.0 9 9 10 198.1 10 10 10 10 10 10 10 10 10 10 198.2 10 10 10 10 1! 10 1! 11 11 t1 198.3 11 11 11 11 11 11 1t 11 11 11 198.4 11 12 198.t 1! 1! 13 13 13 198.6 1l 13 13 13 1a 13 13 14 198.7 14 198.E t5 1t 15 15 15 1t 15 196.9 15 15 It l5 16 16 16 16 16 199.0 16 I6 t6 l6 16 16 '17 17 17 17 199.1 17 17 17 17 17 't7 17 17 15 16 199.2 16 18 t8 18 18 16 1E 16 19 19 199.3 t9 t9 t9 19 19 '19 19 19 20 20 20 zo 20 z0 20 20 20 20 21 199.5 2l 21 21 21 21 21 22 22 199.6 zz zz 22 23 199.7 ?3 ?3 ?3 23 24 24 ?4 24 24 199.8 21 24 2' 25 25 199.9 25 ?5 26 26 25 26 26 26 26 200.0 27 27 27 ?7 27 27 2A 2A 200.1 2A 2A 2A 2a 29 z9 29 29 zoo.2 29 29 30 30 30 50 l0 30 30 200.5 31 3t 3l 31 l1 51 .32 32 a2 I 200.1 32 32 32 33 33 33 33 33 200.5 31 31 34 34 35 200.6 35 l5 35 l6 36 36 36 36 200.7 a7 37 37 37 58 38 38 38 t8 t 200.8 39 39 39 !9 59 t9 40 J RESEiVOIRaREA TABLE Page 3

IIRIGHI PATI.IAIILA(E JAIIUARV1997 SUiVEY

AREAIN ACRES ELEVATIONINCREI,IEIII IS IIITERPOIATEDIO OIiE HI.INDREDIIIFOOT ELEV.FEET .OO .01 .02 .03 .04 .05 .06 .07 .08 .09

200.9 40 12 12 42 201,0 12 43 13 4a 41 201.1 45 45 ?01.2 4g 48 4A 201.1 49 50 50 50 50 201.4 5'I ,l 52 5Z 53 ?01.5 54 54 55 55 56 201.6 56 56 57 57 58 58 201.7 58 59 59 59 59 60 60 60 6lr 201.8 61 62 62 6! 63 6l 65 61 201.9 64 & 65 65 & 6 67 202,0 67 67 67 6a 68 69 69 69 m 202.1 70 70 70 71 7l f1 72 n E 71 73 75 76 76 202.t 76 n n 78 7a 78 n n n 80 80 80 61 81 a2 €:l-85 8:' 84 u .87 zoz,6 a7 88 88 8a 89 89 90 90 90 91 91 94 94 95 95 97 97 97 96 98 99 202.9 100 100 101 101 101 102 102 10! 101 104 203.0 104 105 10t 106 106 107 107 108 108 109 201.1 109 110 110 111 111 112 112 113 113 114 114 11t 115 116 116 117 117 118 116 119 203.3 119 120 121 121 122 122 12t 125 203.4 125 'l26 126 127 127 128 129 130 |]0 M '132 '132 1!! 153 134 1!5 135 156 116 203.5 '111 '143 204.6 137 138 136 1!9 139 140 141 142 203.7 143 111 115 146 147 148 146 149 20!.8 1t0 150 1r1 152 112 153 154 114 155 156 203.9 156 157 158 r58 159 160 160 r61 162 '166 204.0 163 165 166 167 166 168 169 '175 204.1 170 170 171 1n 1n \n 174 174 176 204,2 176 1n 174 1n ln 180 181 181 162 185 ?04,a 164 184 185 1€5 186 187 188 149 189 190 '197 204.4 191 192 rqt 195 194 195 1 1% 198 204.5 '199 200 z0o zol 203 204 204 205 ?04.6 207 208 20E 209 210 211 213 214 204.7 215 217. 218 219 2?O J 2U.A zz4 2z6 224 229 229 230 232 L 2o4.9 233 za4 234 239 210 242 205.0 244 215 246 247 214 250 251 ?52 205.1 2r3 251 257 254 259 260 261 262 261 205.2 26' 2$ 267 264 270 271 272 2E 271 205.3 2n 27a 2n zE1 zaz 2E5 245 2U 247 249 205.4 290 29l z9a 294 296 297 299 300 302 104 205.5 505 307 309 310 311 3t5 317 519 321 205.6 322 324 326 328 ll0 531 333 335 339 205.7 340 344 316 548 350 352 156 559 ?05.8 361 363 365 364 170 472 375 377 380 342 RESERVOIRAREA TASLE

I,JRIGHTPAIMAN LAKE JANUARYI997

AREAIII ACRES ELEVATIONINCREI'IENI INTERPOLATEDTO ONEHUNDREDTH :-EV, tEET .00 .0t .02 .03 .01 .05 .06 ,47 ,08 .09

205.9 385 388 390 393 396 399 102 206.0 4t8 121 427 430 133 137 440 206.1 450 469 172 475 206.2 483 447 195 199 503 507 511 t16 520 ?06.3 524 528 533 537 541 550 555 tt9 ?46.4 58 5n t7a t83 587 ,9? 597 603 608 206.5 624 625 611 636 642 6t3 659 665 206.6 683 690 696 743 709 71' 722 72A n1 246.f 714 75? E7 763 780 7a6 246.8 403 809 815 820 426 832 8t8 444 850 ?06.9 856 462 867 873 079 845 890 896 942 907 207.4 913 918 921 910 936 953 959 961 ?07.1 970 9al 989 995 1001 t00z 1015 1019 1025 247.2 1011 1038 t0t0 1056 1062 1068 1071 10a0 1066 1492 1098 1101 1110 1117 1123 1129 1135 1142 I148 207.4 1154 1160 1167 1173 1180 It86 1193 1200 1246 1212 207.5 1219 1225 1232 1B23a 1244 1251 1257 1261 127A 1276 207.6 1283 1249 1296 ]]03 1509 1315 1422 1528 1335 r34r 247.7 1348 1155 1462 1369 1376 1382 1189 1396 14A3 207.8 1422 11?9 1435 1142 1114 1455 1461 1468 147: 2AT,9 1$2 1489 1196 1t03 1509 1515 1r22 1524 1531 1541 208.0 1r17 1551 1560 1566 157? 1579 1585 1t91 1598 1601 208.1 1610 1616 1622 16?a 1$1 1614 1612 1558 ?44.2 1670 1676 1682 1688 1691 1700 1706 1712 1718 1723 208.J 1729 1rJ5 1741 1747 17t2 1754 1770 1776 17A1 2A8,1 1747 1793 17./? 1805 1811 1417 1823 1829 1835 1841 208.5 1&7 1a5l 1860 1866 1872 1479 1885 1891 1898 1904 244.6 1911 1917 1921 1930 1937 1913 1950 1916 1963 1970 2Aa.T 1976 1983 1989 1996 2003 2AA9 2016 20?? 2429 2015 2AA.A 2042 2019 2055 2062 2069 2476 2AA2 2089 2496 2103 208.9 2110 2117 2132 ?139 2146 2153 2161 2168 21n 209.0 2142 2190 2197 2201 221? 2219 2227 ?235 ZZ4Z 2250 209.1 2257 2279 2287 2295 2102 2310 2318 ?326 249.2 2t34 244? 2150 2358 2366 2374 2342 2391 2399 2408 2A9.3 2116 ?1?5 2133 ?112 2451 2460 2463 ?177 2446 2195 209.1 2544 2513 2523 2532 ?511 2550 2559 ?568 2574 25AA 209.5 2594 2608 2614 2624 2639 2619 2660 ?671 2651 2692 209.6 2703 2714 ?725 286 2744 2759 2774 2741 2793 2805 209.7 2816 2A2A 2439 2850 2462 2473 2aa5 2896 2907 ?918 209.8 2930 2911 2952 2964 297' ?947 2998 3009 3021 3032 209.9 3444 3055 3467 1078 3090 3101 3112 31?1 3155 3146 210.0 3157 3168 1180 3191 3202 3?15 3224 3235 3216 32r7 210.1 326A 1Zn 1290 3301 3312 3323 3335 3369 ?10,2 r381 3392 3401 3115 3127 3458 3449 3461 3112 3483 210.1 3505 3516 3527 35ta 3519 3560 3572 3583 3r94 210,4 3605 3617 3624 3639 3651 3662 3671 3685 3697 3708 210.5 3720 3731 3712 3751 3765 3n6 3757 3na 3809 3821 210,6 3832 3845 3855 1866 3An 3889 3900 391? 3923 393t 210.7 1958 3969 3981 3992 4005 4015 1026 4038 210.4 4060 1072 1.083 1A95 1146 4118 11?9 4144 4152 1163 RESERVOIRAREA TASLE

!/RIGHTPATI,IAN LAKE JANUARY1997 SIJRVEY

!NCREiIENTIS INTERPOLATEDTOONE HUIIDREDTH F@T .00 .0t .02 .03 .01 .05 .06 .47 .08 .09

214.9 4185 4207 1219 1230 1?12 4213 4265 1276 211.0 4?48 1299 4311 1322 4334 1357 4368 4380 1391 211.1 4402 1125 4454 4492 4503 211,2 4515 1526 1537 4519 4560 1571 4ra3 4645 1616 211,3 1627 4639 4695 4T1a 1730 ?11,1 475t 4810 4A?? 4833 4a45 211.5 1A5f 1469 4482 4914 1931 1913 211.6 4942 1995 5008 5021 5053 5046 5058 5070 5083 5095 211.7 5107 5119 5111 5143 5155 5167 5179 5191 520t 5214 2 .8 ,226 ,237 ,?48 5260 '271 ,242 5293 5t01 5315 5326 ?11,9 ,347 5148 5360 5371 '3a2 5591 ,11' 54?6 5137 ?1?.0 5118 5460 5171 5142 5$1 5505 5517 5540 t552 212.1 5563 5586 5197 1609 5620 56!2 5641 5655 5666 ?12.? 5678 5589 5701 ,713 '7?4 5736 ,714 5760 5773 '78' 212.3 5797 5809 5azz 5al5 5847 5860 5872 5885 5898 5911 5923 5956 ,914 1961 5973 5985 t998 6010 6422 - 6034 212.5 6416 6058 6071 6081 6095 6147 6119 5131 6143 61tt 212,6 6168 6180 6192 6205 6?17 62!0 6242 6255 6267 sltc 212,7 6292 $a1 6317 63?9 6341 6354 6366 6379 6191 6404 ?12.8 6417 6129 619? 6504 6517 65t0 212.9 651? 65t5 6567 6500 6592 6605 6618 6610 6644 6656 ?13.0 6668 6681 6707 6721 6734 6718 6762 6775 67a9 213.1 6803 6417 6830 6A!1 6857 6871 6885 6499 6914 6924 213.2 694t 6958 6972 6947 700? 7016 7431 7060 7075 ?1t.1 7089 7141 7114 71ll 7147 7162 7176 7190 7ZO4 7?18 7231 7245 7259, 7272 7286 7300 7413 7327 7J11 7311 213.5 7367 7341 ZJ91 7407 7121 213.6 7501 7514 7527 n10 7533 7564 7r79 7592 7645 761A 213,7 7631 7656 7669 7642 7695 n08 77ZO 7733 7716 213,4 7759 7Tl2 n8, 71{JA 7811 7821 7837 7850 7861 7477 713.9 7890 7903 7916 7930 7943 n57 7943 n97 8010 211.0 4021 8038 8052 8066 8080 8095 8110 8125 8140 8156 214.1 4171 8187 a2a2 8218 8234 8250 4266 a2a2 8299 8115 214.2 al3? 8149 8566 8383 8400 0418 u36 8455 a1B A491 214.3 8509 8528 ar17 8565 8584 8603 4641 8660 A679 211.1 8699 87lE 8737 EE7 8n6 8796 8816 8836 8855 8875 211.5 aa94 8911 89ll 8952 4971 8990 9008 9027 9416 9065 214,6 9084 9103 9122 9179 9198 9216 9235 9254 214,7 9273 9291 9310 9329 9349 9368 9347 9125 9445 211.8 9485 9502 9521 9540 9559 9578 9597 961' 9631 214,9 9652 9671 9689 9707 9725 9713 9779 9797 9815 21r.0 9831 985? 9470 9888 9946 994? 9960 9974 9996 215,1 10014 10052 10050 10059 10087 10105 10123 10141 10160 10178 215,2 14197 14216 14231 10253 10271 10?89 10108 10321 10545 10364 215.3 10185 10401 144?0 104t4 104t7 10175 14494 10512 10550 10t48 215.1 10566 105E4 10601 10621 10610 10658 106n 10696 10715 10734 215.5 10753 10772 10792 10811 10830 10850 10871 10891 t0911 10931 ?15.6 10951 10971 10991 11011 11032 11452 11071 11091 111i1 11131 215.7 11150 11169 11184 11207 11226 11245 11264 11283 11302 11321 215.8 11340 11358 11377 11396 11415 11431 11452 11171 11469 11508 RESERVOIRAREA TABLE

JANUARY1997 SURVEY

EI.EVATIONINCREIIENT IS INIERPOLATEDIO ONENUNDREDTH FOO'T 'EEI ELEV. .00 .01 ,02 .01 .04 .05 .47 .08 .09

?1r.9 11527 1151.6 11565 11r81 11603 11622 11660 11679 11698 ?16.0 11714 11nA 11754 11778 11797 11817 t 1836 11855 11474 11A93 216.1 11912 11911 119t0 11988 12007 12426 12046 1?465 12005 216.2 12105 12125 1214' 12165 1?18' 12205 12221 12244 12264 122A1 216.3 12304 12325 12316 12367 1?388 12410 12451 1245? 12474 12495 ?16.1 1?517 125t9 12561 12541 12606 12$A 1?613 12677 1?700 12721 216,5 12717 1znO 12795 12819 12A42 12866 1?889 12913 1?936 12958 216.6 129A1 13003 134?1 13046 11068 13090 1111? 11111 1315t 1a177 216.7 I1198 13219 13240 13261 13241 13302 13323 13344 13361 13185 216.6 13405 13126 13116 13166 M87 13507 13527 13t48 13568 13588 216.9 1J609 13629 13619 13670 15691 1371? 137f3 13751 13774 13n' 217,0 13815 1t835 13855 13A76 13896 13917 1t917 13957 13976 13996 ?17.1 1401t 11034 11053 14472 11091 11110 14128 14165 11181 217.? 14?41 14219 11236 14211 1427? 14290 14308 143?6 14344 14362 217.3 14300 14398 14435 11172 14510 14129 1154A 217.4 11566 14581 11602 14621 11630 14656 11691 14709 - 14727 217.5 11715 14763 14741 11a17 14855 r4653 11a71 14889 14906 217.6 14924 11959 11976 14993 15010 15426 15041 15060 15077 217,7 15093 15110 15126 15113 15160 151n 15193 15210 15227 15?11 217,8 15261 15278 15295 1t312 15329 15347 11361 15382 t5599 15116 ?17,9 15131 15451 15469 1t1a7 15504 15539 15557 15575 15593 218.0 15611 15624 15646 15664 15681 15699 15716 15751 15752 15769 214.1 15786 1t803 15821 1r658 15855 15872 1t890 15907 15924 15t41 214.2 15958 15975 15993 16009 16026 16043 16059 16075 16091 16107 214.3 16123 16139 16156 16172 16184 16204 16224 16?36 16252 1626A 214,4 16281 16299 16315 16330 16316 16361 16476 16391 16446 16421 218,5 1613' 16450 16165 16480 16509 16524 16538 16553 16567 218.6 16581 16596 16610 16621 16638 16652 16667 16681 16696 16711 218.7 16f26 16757 16772 16788 16404 16820 16836 168t2 16869 218.8 16886 16903 16920 16937 16955 16974 16990 17447 17025 17012 214.9 17060 1707A 1709' 17113 17131 17149 17166 1718l' 17202 17219 219.0 17237 17?5' 17271 17292 17J14 173?8 17J46 17361 17382 17400 219.1 17119 17138 17457 17175 17512 175t1 17549 17568 17596 219,2 17601 17622 17610 17658 17691 1n12 17731 17749 17764 219.3 1n86 17805 17A23 17&2 17660 17574 17E96 17913 17931 1794A 219.1 17965 17952 17999 18016 18033 14050 18066 18083 18100 1a117 219.5 18133 18150 18167 18184 18201 14214 18?55 14252 18269 18286 219.6 18103 18319 18116 18552 18369 18345 14rc2 18414 1843/. 18451 219.7 18167 18441 18500 18516 18533 185t0 14567 18581 18600 14617 219.4 18635 18652 18670 18688 14705 187?3 14741 18759 147f7 1879' 219.9 16611 18831 18849 14866 18884 1490? 18920 18939 18957 14976 2?0,0 18994 19014 19033 19052 19071 19090 19109 19128 19147 19166 ?20.1 19186 19205 19224 19?11 19263 19242 19301 19320 19139 19359 220.2 19374 19397 19416 19135 19454 19173 19493 19512 19132 19551 220.3 19570 19589 19608 19627 19616 19665 19681 19743 19721 19710 ??0.1 19759 1977E 19n6 19E15 19811 19852 19871 19490 19909 1992A 220.5 19964 19965 20004 20024 20013 24463 20083 20103 20123 224.6 20113 20163 20183 24203 20221 20244 ?0?61 20285 ?0305 20326 224.7 20347 20369 20391 24112 2043t 20457 20179 20501 24521 20546 220.4 ?0568 20590 20613 20635 ?0658 20580 20702 ?0721 20746 2076A RESERVOIRAREA'IABLE

JAIIUARY]997 SURVEY

ELEVITIOIIIIICREI{ENT IS INTERPOLATEDTO ONEIII]NDREDTH ELEV. FEET .00 .01 .02 .05 .04 .05 .06 ,47 .08 .09

220.9 20794 20812 20834 ?0856 20474 20901 24923 ?0916 24964 20991 221.4 21013 21015 21057 21080 21102 ?1125 21.'49 ?1172 21195 21218 2?1.1 21?41 ?1261 21?46 21309 21332 21351 21477 21100 21422 21445 221,? 21467 21190 2151? 21535 21554 ?1581 21644 21626 21649 21672 ?21.! ?169' 21717 ?1739 21762 21784 21406 21428 218t1 2187:3 21895 ?21.1 ?1918 21940 ?1962 219A4 2?006 22024 22014 22072 2?491 22116 221.5 22137 22159 ?2141 22242 22221 22216 22267 22289 221,6 22355 22371 22394 22424 22412 22161 2?4U 22508 22534 22553 221,7 225f5 ??597 22619 ?2611 22662 22644 22706 22728 22751 22773 2?1,8 ?2795 22818 22444 ??863 22486 229A9 ??932 22954 22975 22997 ??1.9 2J018 ?t410 ?4061 ?3081 ?t102 ?41?a ?3141 2t164 ?3185 232A' 23226 23216 23267 23287 23308 2aa2a 23319 23169 23389 23410 222.1 23430 23454 ?3170 23190 23510 21510 23550 23570 23t90 23610 222,2 E65A 23649 23669 23689 2t749 237?a 23748 2]764 23744 2t808 ?22.3 4A2A 23847 ?3867 ?3847 24907 239?7 ?3947 ?3967 23987 21447 21027 24047 24067 21087 24144 24128 24148 24164 ?4189 - 21249 222.5 24230 ?4251 z4?71 24314 24434 24354 24375 ?1396 21!17 222,6 z44ta 24460 24482 24504 24540 24511 21582 24641 ?1631 21&9 24667 24683 24700 24716 21n3 ?1n0 24769 21A02 24AM 222,a 218?9 21812 e4855 21 8 21842 218i5 24908 21921 ?4914 2494A 222.9 21961 21971 44988 25001 2t015 2502E 25041 ?5068 25081 ??3.O 25095 25114 25155 25152 21170 ?5189 25408 ?r227 ?5246 25265 ?.23.1 25244 25302 25321 25340 25359 25378 ?5397 25415 25434 ?5453 223.2 25472 ?r191 25510 25529 25547 25566 25543 2t604 25623 ?161? 223.3 25661 21679 2569A 25717 25n6 25755 21771 25792 25811 2t830 223.1 ?r419 25868 25887 25946 ?5924 25943 21962 2:981 26000 ?6019 223.5 26437 26056 26475 26091 26113 26151 26169 26144 ?6207 ?2t.6 26226 26245 26261 26243 26301 26320 26349 26358 26377 26396 223.7 264tt 26112 26471 26490 26549 26524 26516 26565 26544 223.4 26603 26622 264\1 26460 26678 26697 26716 26735 26754 267n 223.9 26791 26810 26429 ?6844 ?6567 25886 2690' 26923 26942 26961 221.0 26940 26993 27006 27020 27033 27416 27019 27072 27045 27499 224,1 27112 27125 27134 27151 27161 2717A 27191 27204 27217 2744 221,2 27243 27257 27270 27243 27296 2rJ09 27322 2n36 27319 2i462 ?21.3 27375 2B8a 27401 27415 ?7424 27111 27151 27167 27440 27494 224,4 27507 27520 zE33 2n$ 27559 2n73 27546 27599 27612 ?762' 224,5 27644 27652 ?7665 27674 27691 2n04 27714 27741 2n44 27717 221.6 2m0 2n83 27n7 27810 2782t 27436 27U9 27862 27876 27849 27902 27915 27928 27911 2795' 27964 27941 27991 28007 28020 224,A 2A031 24047 28060 24473 24086 28099 28113 24126 28139 ?81r? ??1.9 28165 24178 24192 24205 28214 28?31 25244 24257 24271 28281 22'.0 24297 28310 243?3 ?a$7 28350 28363 24376 28389 24402 24416 225,1 24429 24442 2&'55 2446a 2UA1 24495 28508 24521 24534 24547 ??5.? 28560 ?4571 24547 28600 24613 246?6 28639 ?8651 ?4666 286n79 ?25.3 2069? 28705 24714 24732 24745 ?a758 24771 2A7U 24797 28811 24421 2&437 28450 28861 28876 28890 24903 24916 24929 2A9Q 225.5 24955 24969 24942 24995 29008 29021 29035 29018 29061 29071 225.6 29447 29100 29114 29127 29140 29153 291.6 29179 29193 29206 225.7 29219 29232 29245 29254 29272 29?45 29294 29311 293?1 ?9t37 225.8 ?9351 29361 293n ?9394 29103 29116 29130 29113 29156 29169 RESERVOIRIREA'IABLE

JANUAiY1997 SURVEY

AREA!N ACRES ELEVATIONINCREiIENT IS INIERPOLATEDTO ONEHIINDREDIIi FOOT ELEV.FEET .00 .01 ,02 .03 .01 .05 .07 .08 .09

225.9 2914? ?919' 29509 29522 29135 29544 29r61 29574 21588 29601 226.4 29611 296?7 29640 ?9654 29667 29660 2969! 29706 ?9719 29733 226.1 29716 29?t9 29772 29785 29794 29412 29425 ?9838 29451 ?9861 226.2 29877 29891 29904 29917 29934 29943 29956 29970 29943 29996 226.3 30009 30022 30035 30049 30062 30025 30088 30101 30114 30128 226,4 30141 301t4 30167 30180 30193 30207 30220 30233 30246 30259 226,5 30272 t0286 30299 10312 30325 50358 34352 30365 30378 30391 226.6 50404 to1l7 304t1 40457 50420 30481 30496 50510 30523 ?26.7 30t36 30r19 10562 30575 t0589 30602 10615 t0628 t0611 10654 226,a 30668 30681 30694 34707 30724 30733 14747 t0760 30713 307a6 ??6.9 30799 3061? 30826 30839 308t2 30865 50676 30891 3090t 10918 227,0 509t1 30944 30957 34971 a09u 30997 51010 31023 31036 11050 227.1 31065 31076 31089 lt10? t1115 311?9 31142 31155 31168 11181 ??7,2 31194 31204 3lzz1 !1231 31217 31?60 31?7i 31247 51300 11311 227,5 313?6 31559 t1352 31366 11379 11392 31405 t1418 31431 31115 31458 31471 311A1 31497 t1510 31524 315t7 31550 31563 - 31576 227.' 31589 31601 316r6 11629 11642 51655 31669 11642 31695 !1708 227,6 31721 31731 31718 !1761 31774 31787 31800 31813 31827 31840 ?27,7 11853 J1866 11679 3189? 11906 51919 31932 31945 51958 !1971 227,8 31985 31998 320| 32421 32037 32050 32064 32077 32090 32143 ??7.9 32116 32129 32113 32156 32169 32182 !2195 12244 224.0 32214 32261 32274 322|la 12301 32314 32327 32340 32313 32367 z?4.1 32380 32!93 32106 32419 32132 42459 32472 3248' 32nA 224.2 32511 3?525 32538 32551 32577 32590 12604 3?617 32630 224.3 32643 32656 32669 12643 32696 32709 t27?Z 32n 32748 3276? 228,4 32775 32744 12801 42414 32827 32841 32454 32867 32880 12893 ??8.' t2946 32920 329!3 12916 32959 32972 32946 32999 33012 33025 ?28.6 13038 13051 33065 33078 33091 33101 33117 33130 33144 11157 228.7 33170 33183 33196 33209 33223 33?36 31249 33262 33275 31288 ??8.8 33315 11328 rll41 33354 33167 3!381 33194 33407 33420 224.9 1r433 11446 11160 33173 11486 33499 33512 11525 53539 33512 229.0 33565 31578 33591 33605 33618 33631 33611 33657 33670 136& 229.1 33697 33710 33723 33736 a3749 33763 33776 33789 33402 tla15 229.2 138?8 3aa4? 33855 31868 $841 33894 33907 33921 33934 33947 229.3 3t960 33973 33986 34000 3/.013 310?6 11039 34052 3106' 31079 229,4 34092 14105 14118 341t1 34158 34171 34144 34197 a4210 229,5 34223 34237 14250 34263 34276 34249 34303 a4316 34329 44442 2?9,6 34355 34364 34342 14395 t4408 34421 34434 34461 44174 229.7 31487 31.500 31513 31526 31r10 31r13 31566 34579 14592 14605 229.4 11619 31632 34645 34658 31671 3&41 31694 31711 31721 31737 229.9 34EO 44763 a47V 34790 l4E0l 54616 34429 31&2 34A56 34869 230.0 1188? 31901 31926 31914 31970 3199? 35015 15017 55059 15041 230.1 35105 t5125 35117 35169 15191 55215 t5255 35257 55?E0 15102 ?30,2 35316 :5168 15190 35112 35131 35456 35174 35500 35r?? 230.3 35545 t5567 15589 15611 55631 35655 356ff 31699 35721 31713 230.1 35765 35797 35810 35432 35854 35E76 15898 35924 35942 35961 230.5 35986 36008 35030 36052 36075 36097 36119 46141 36163 36185 230.6 36207 36229 36?51 36273 36295 36317 16340 36362 36384 36106 230.7 36128 36150 36172 3619t 36116 56538 16560 36542 36605 36627 250.4 36671 36693 36715 36737 36759 35741 36403 36825 36447 RESERVOIRAREA TABLE

!/RIEHTPATI{AN LAKE JANUARY1997 SURVEY

ELEVATIONINCRE|lEII'I IS INTERPOLATEOTO O[E HUNDREOTNFOOT ELE!.FEET ,00 .01 .0? .03 .01 .05 .07 .08

234.9 36870 3689? 36911 36936 369r4 16980 37042 370?1 37416 37068 231.4 37494 3711? 37135 37157 37179 37201 37223 37215 37267 37289 231.1 37333 3735' 3nn 37140 371?2 37184 37514 231.2 37r32 37551 37576 37598 37624 37642 37665 37647 37709 37731 ?31.3 37753 37775 37797 37819 37411 17861 t788t 57908 37914 17952 231.1 37974 37996 38018 38040 38062 18084 38106 38120 38150 3A1n 38195 48217 182!9 38?61 34243 18305 38327 38149 3a371 38393 231.6 18415 38138 t8460 58482 34504 34526 38548 t8570 !a592 1A611 231.7 J8616 38650 38680 3870J 347?5 34747 34769 t8791 J8813 3881t ?31.8 3AA17 38879 38901 38921 30945 38968 t8990 t9012 39A11 390t6 ?31.9 39076 19100 39122 39111 39166 39188 192t0 39233 39255 !9277 232.0 39299 19321 39343 19165 39387 39409 39431 39451 39475 !9194 ?3?.1 19520 39512 39564 59586 39608 39630 39652 39671 39696 J97t8 232.? 39740 39763 1978t 39807 t9429 39851 39A73 39895 39917 39939 232.3 39961 39981 40005 40028 10050 40072 40tt6 40138 10160 212,4 1018? 40?04 40226 40248 14270 10?91 40315 1A337 10359 - 10381 23?.' 40403 4042' 4051! 40536 40558 40580 10602 2!2.6 10621 40664 40690 4471? 1An1 40756 40774 40801 t oAzl 232.7 44845 10a67 40849 40911 40933 4a955 40999 110?1 41043 232.4 41088 41110 41132 11114 4l198 1122A 41212 41261 232.9 112a6 41r08 41II1 41153 11375 41397 41163 11445 211.0 415A7 11529 11551 11573 11618 41662 233.1 41724 11750 41816 41838 41861 41883 41905 11927 233.2 11993 12415 12037 12019 42081 42143 12126 12118 213.3 12170 12192 12236 42254 1?280 42302 12324 42316 12364 233.4 12191 42113 42435 42157 12501 1?r23 12545 42567 12589 233.5 42611 12633 42656 42674 12740 42722 12766 1?7AA 42410 233.6 42432 42851 1?476 12494 42921 1?913 42965 12987 43009 43031 233,7 43051 13075 4t097 43119 43141 41186 43208 43230 43?52 233.8 43274 13?96 43318 43140 43362 13341 43429 43451 43473 233,9 13495 4351f 43539 13561 43543 43605 136?7 ?31.0 13716 43734 44764 437a2 43804 43426 41818 43874 43492 43914 231.1 11936 13959 41981 44003 110?' 44469 14113 41135 234.2 1,1'241 11221 11?68 14290 11312 11331 44356 234,3 11378 11511 44533 44555 11577 231.1 11621 11613 44731 234,5 148?0 44442 11886 44908 44930 44952 234,6 11041 45061 45045 45107 45129 15151 11173 45195 45217 45239 ?34.7 1r?61 4528/ 45306 15328 45350 45372 15391 45438 15460 231.4 454a2 15541 115?6 45549 15571 15593 4s415 11637 45659 15681 234,9 15743 45725 1r717 15769 45791 15814 45816 4t8t8 45880 45902 235.4 45924 45964 45990 1601? 46434 rc457 46101 16123 235.1 $149 16211 16233 16255 16299 46322 16311 16188 16132 45?A 46542 16561 ?t5.3 16587 46631 16653 16763 46745 23r,4 46807 168?9 46452 46471 16896 16910 46962 47024 47050 17072 47149 17161 47143 47245 4T?27 ?4r.6 17219 47?71 47293 17315 4n37 17359 473A2 235.7 17192 17r11 4636 17558 47544 1764? 235.4 477,3 47rl5 17757 17801 47424 1781' 17A67 17889 RESERVOIRAREA TABLE

URIGHTPATITIAN LAKE JANL]ARI1997 SL]RVEY

ELEVAIIONINCREI,I€NTls INIERPOLATEDIO ONE NUNOREDTH FOOT ELEV. FEET .00 .01 .0? .0t .04 .05 .06 .07 .08 ,09

235.9 47912 17978 48000 4AO?2 48066 48088 48110 236,O 44132 18151 18177 18199 14221 44213 1A?65 14247 48109 14331 ?36.1 48353 14375 $397 18119 1811? 48508 48530 44552 236,2 46571 14596 $614 18610 14662 48685 44707 44729 44751 44773 ?36,3 4A795 4AA17 48839 48861 10003 48905 449?7 48950 44972 44994 236.1 49016 49038 $aa2 19101 19126 49148 19170 19192 19?15 236,5 19237 49?r9 49?51 49303 49325 19347 19369 19391 19113 19135 216,6 19480 1950? 49564 49612 49634 49656 ?36.7 19700 197?2 49f49 19a11 49833 19455 19977 236.4 19921 19913 50010 5AA32 500t4 50076 10098 236.9 t0120 50142 50164 501e6 50208 50230 54252 50275 50297 50319 237,A 50141 50461 50385 5A107 50129 50451 5o4n t0495 50517 t0540 237.1 50562 50541 50606 50628 50650 10672 50691 50716 50738 10760 23f.2 5A7A? 50405 t0a27 50849 50871 50893 50915 50937 509t9 50981 ?17.3 51003 ,1425 51447 51070 51492 51114 51136 51158 t1180 51202 ?17.4 51221 ,1216 51264 51290 5M? 51115 51317 51379 11401 - 51123 237.5 51445 51167 51189 51511 51531 5155' ,1r78 51600 51622 51911 237.6 51666 51688 ,1714 ,1A? 51f51 51776 ,1798 510?0 51841 51865 737.7 51887 5t 909 51931 t1953 '1975 51997 12019 52041 5?A$ 12085 237.4 52100 52130 52152 52174 '?196 52214 5221A 52262 52254 52306 ?t7.9 52328 52350 52313 t2395 '?417 5?439 52161 52483 52505 52127 238,0 52519 52571 52593 52615 '?614 52660 52642 52704 527?6 52744 238,1 52n0 52792 52414 52836 t2858 5?880 52903 ,29?' 52947 52969 238.2 52991 53013 53035 51057 53079 53101 53115 53168 53190 214,3 53212 53234 53256 5327A 53t00 53322 53311 ,3366 53388 53410 ?34.1 53455 53477 53499 53521 51543 53561 53587 t3609 51631 238.5 53651 53675 53698 53720 5374? 53761 51786 53808 t3830 53852 234.6 t3471 53496 53914 53910 53963 51945 51007 514?9 t4051 544f3 238.7 5/r095 ,4117 54139 54161 51183 54246 51??8 51250 '1272 54294 238.8 54316 5$34 t4360 ,43A? 54101 51126 5411A 51171 51193 54515 234.9 51537 11559 5/t581 t4603 54625 51617 ,466? 51691 51713 54736 239.4 54754 54740 54802 14a24 '1816 54868 54890 54912 54914 51956 239.1 54974 t5001 55023 55015 55067 55009 55111 55131 55155 55177 239,2 55199 55221 55243 55266 55284 t5310 55332 51354 55376 55398 ?39.3 55120 55442 55464 55486 5t508 55553 55575 55597 51619 239.1 55641 55663 55685 ,1707 55729 ,,41 55773 5rn6 55818 tt840 239.5 55462 55884 55906 559?6 15950 ,197? 55991 56016 56038 56061 239.6 56041 56105 561?7 56119 56171 t6193 56215 56237 '6?19 56241 239,7 t6103 56426 56314 56370 56392 56\11 56436 56154 t6480 56542 239,A 56521 56546 56564 56t91 55613 56617 566f9 16701 56723 239.9 ,6745 56767 56749 56E11 56833 55855 56878 56900 '6922 56911 ?10.0 56966 ,6992 57018 17011 57070 57A96 57122 5t118 57171 57200 240,1 57226 ,7252 57274 57a04 57330 57356 tBaz 5740A 57434 57160 210.2 57446 57512 57539 57564 t7590 57616 t7612 5766A 57694 57f?0 240.3 57746 5n7? 57799 57a24 t78t0 57476 57901 57929 57955 57941 240,4 58007 58033 58059 58085 58111 58137 5816t t8189 5A215 58211 214.5 58?93 58519 543$ 58371 58397 5U?3 5A49 58475 t8501 214,6 ,8127 58551 58579 58505 58611 58657 58683 5a7A9 5A73t '8761 214.7 ,8747 t8813 58859 5886t 58891 5a917 58943 5A969 58995 59A21 240.8 59017 59lZJ 59099 59125 59151 ,9177 t9203 59229 59255 59241 RESERVOIRAREA TABLE

JANUARY1997 SURVEY

ELEVATIOIIIIICREI,IENT I5 INTERPOLATEDTO ONEI]I]IIDREDIN ELEV. FEET .00 .01 ,02 .03 .44 .05 .06 .47 .08 .09

240.9 59307 59333 t9359 59385 59411 59437 59163 ,%49 59515 59541 241,4 5956f 59593 59645 59671 59724 59776 59802 241,1 59428 59451 59480 59906 59932 59954 59944 60010 60036 6AA62 241.2 60088 60166 64192 64214 60244 64270 60296 6A322 241.3 60348 64374 60400 604?6 60452 64178 60504 60556 60582 211.1 60608 646J4 60650 60686 6071? 6ona 6A790 60816 64442 241,5 60868 60894 64924 60972 64994 61024 61050 61476 6110? ?41,6 61128 61151 61t80 61206 61232 61258 6128/ 6i310 61336 61362 241,7 61388 61192 61518 61570 61596 61623 ?41,4 61675 61701 61727 61751 61f79 61805 61831 61857 61883 ?41,9 61935 61951 61947 62013 62439 62065 6?091 62117 6?141 242.0 62169 62195 62221 62217 6227:J 62299 6?!?' 62351 62377 62103 ?4?.1 62429 62455 62441 625A7 62533 62559 62545 62611 62617 62663 24?.? 6?689 6271t 6?741 62793 62419 62445 62471 62497 62924 24?.3 62949 62975 63001 634?7 6305J 63079 63t05 6t1lt 63117 63181 242,4 63?09 6t235 63261 6!207 6ttl3 63339 63365 6tt9t 63417 - 63443 242,5 63170 63496 6352? 63518 64174 63600 636?6 63652 63674 63744 ?4e.6 $n0 63756 63782 61808 61831 61860 65086 6!912 63938 63964 212.7 63990 64016 64042 64064 6\120 61172 6119a 61221 242,a 64210 64?76 6430? 613?8 61354 64340 64432 242,9 61510 64136 64162 64588 24t,A 61822 64848 64926 64952 21t.1 65010 6t056 61042 65108 55134 65160 65186 65212 65234 65264 213.2 65294 6t316 6t3lr3 6t369 6539t 65121 65473 65499 655?5 213.3 65551 65577 65603 6t629 6565t 65681 65747 65733 65759 65745 243.4 65811 65437 65863 65849 6591t 65911 65967 65993 66419 66045 66471 66123 66175 66241 66227 66213 66279 66305 213.6 66331 66357 66383 66135 66t13 66539 6656' ?43.7 66591 66643 66695 66721 66773 66799 66825 213,9 66451 66An 66901 66929 66955 66941 67447 67044 67059 67085 ?13,9 67111 67137 67163 67190 67?16 67242 67264 67294 67320 67346 241,0 67372 67394 67454 6no2 67525 67554 67580 67606 744.1 67632 67658 67641 67714 67736 6n62 67744 67811 67810 67866 ?11.2 67892 67918 67996 68022 6804E 6A074 68100 68126 244,3 68152 68178 54201 64230 64256 64242 68308 68154 68360 68386 68112 68438 68490 64516 64542 68568 64591 68620 646\6 ?11.5 68672 68698 68721 64750 64776 68802 68828 68851. 68880 64906 64942 689t8 68984 69010 69055 69063 69089 69115 69191 69219 69245 69271 69297 69323 69349 69375 69401 69127 244,a 69153 69505 69531 69557 69583 69609 69635 ?11.9 69713 69739 69765 69791 69517 69E41 69869 69895 699?1 69947 245,A 699n 69999 70025 700t1 TAATI 70103 70129 70155 70181 70207 245,1 70233 702r9 70245 70511 70337 70163 70389 70415 215.2 70493 70519 70515 70571 70597 TA62t 70619 70675 7A701 70727 215.3 7A753 70779 70805 70831 70457 70883 70910 70936 7A962 70988 215.1 71414 71040 71466 f1492 71118 7117A 71196 71??2 71244 ?45-5 71271 71300 713?6 71352 71374 71101 71134 71456 71182 71508 71531 71560 71546 71612 71634 71664 71690 71716 7171? 71764 215.7 71420 718/,6 71472 71494 71921 71950 72002 72424 245,A 7?054 72040 72106 f2132 72154 7?144 T2210 72236 72262 72244 RESERVOIRAREA IABLE

JANUARY1997 SURVEY

AREAIN ACRES ELEVATIOIIINCREI{ENT INTERPOLATEOTO ONEHUNDREDIH FOOT ELEV, FEET .00 .01 .02 .03 .04 .05 .06 .07 .08 .09

245,9 72314 72314 72366 7239? 72118 72474 f?496 7?122 7254A 246,0 72571 72604 72626 f2652 72674 72701 7znA f?86 7?743 72409 246.1 72A35 72861 728a7 7?913 72939 7?965 72991 73017 na13 73069 246.2 7ia95 74121 7f117 73173 74199 73225 ii251 73277 7J303 73329 246.4 73355 zl81 73107 73133 73159 73185 73511 73157 rJ5(6 73t89 ?46,4 7f,615 7]641 73667 73691 73719 f374t 73771 8797 738?3 f3A49 ?16.5 ns75 E9A1 73927 f3953 73979 74005 f4031 710r7 74083 f4109 216.6 71135 74147 74213 74239 7426t 74?91 74317 74113 74369 246.7 74!95 71121 74525 74551 71577 71603 71630 ?46.8 74656 71(62 74704 7461? 71434 71861 74a90 ?16.9 71916 74942 7496a 75420 7r046 75072 7r094 75124 75150 217.0 75176 75242 75224 75251 75240 71306 75332 75158 75584 75414 247.1 754€a 75514 75540 7r566 7559? 75614 75611 75674 247.? 75696 757?? 75744 7tn1 75800 75426 7ra7g 75901 75930 217.3 75956 7594? 76008 76034 76060 76086 76112 76134 76161 7619A 76216 76264 76291 76320 76316 7637? 7$9A 76424 - 76454 ?47.5 76503 76529 76155 76581 76607 76633 76659 76645 767t1 247,6 76ft7 76763 767A9 76415 f6441 76167 76893 76945 76971 76997 77423 77019 77075 77101 77127 77153 77179 77205 77211 247.4 7724! 77309 71335 77361 7na7 77413 774t9 7716' n191 217.9 77517 77543 77569 77595 77621 776n 77699 77725 77751 248.0 77777 77443 77429 nafi n881 77907 77933 77959 77945 78011 244.1 74437 78051 78089 78115 7At1 74167 74193 78219 74245 70271 74297 7432t 78150 78376 7840? 74424 78l54 78480 74506 78532 244.3 78558 74541 78610 781i36 78662 78688 74714 78740 74766 78792 ?48,4 7E816 74411 78870 78a96 789?? 7494f 74971 79000 79426 nO52 248.3 79078 79104 791t0 79156 n182 79208 79234 n260 79286 79312 248,6 79338 79361 79390 n112 n16A n520 79546 n572 218,7 79594 79621 79650 n702 n72A 797r1 79780 79406 n$2 248.8 79858 79444 79910 79936 79962 79988 80014 80040 80066 80092 244.9 80118 44144 80170 80197 80221 40249 44275 80301 40327 80353 249.0 80379 80405 804t1 au57 80483 80509 80535 80561 80587 80613 219.1 80639 80665 80691 40717 80713 80769 80795 80621 80847 80823 249,2 80899 80925 80951 aa9n 81001 81029 81055 81081 81107 81133 ?49.a 81159 81185 41211 4187 41263 E1289 81315 81341 41367 81393 ?49.4 81419 81445 41171 41497 81523 81549 41575 41601 a1627 816t3 219.5 81679 81705 a1B1 41757 81781 81809 81835 41861 81887 81913 219.6 81939 81965 81991 a2017 82043 82070 s?096 42122 82118 8?171 219.7 82200 E2226 E2252 s2?74 82304 82330 42356 a2aa2 82408 42434 219,4 82160 821% 82512 82538 42561 82590 42616 a2&2 82664 42691 219.9 82720 42746 EZn2 aznE a2a2/. 82850 42876 4290? 8292A 82954 250.0 82980 85009 83038 83067 83096 43124 83153 81182 83211 41240 250,1 83269 83298 433?7 83356 83385 8I411 43442 at17l 83t00 43529 250.2 83t58 83t87 83616 a3&5 41674 43702 a3731 83760 $749 &a1a 250.3 a3a47 $476 83905 43931 81963 83991 84020 84049 81074 84&107 81136 84165 84191 44223 44252 8,(280 84109 &338 84367 8l196 250.5 4425 u151 84483 81512 84'541 44569 84598 u6?7 E1656 84685 250.6 u711 u711 unz E4E|)1 84830 84858 84E47 8/916 81915 8l971 250.7 85003 8t052 8t061 85090 85119 a514? 85176 45205 at234 85263 250.8 arzgz 85321 85350 45379 85408 85416 81165 45494 a5521 85552 RESERVOIRAREA IABLE

JANIJARY1997 SURVEY

ELEVAI!ONINCRE||ENT ISINIERPOLATEDTOONE IIUNDREDIN FOOT ELEV. FEET .00 .01 .02 .01 ,04 .05 .06 .aT .08 .09

254,9 85581 85610 85639 85668 85697 85725 a5754 85783 8t812 85841 251.4 8t870 85899 8t9?8 85957 85986 86011 86043 86072 86t0t 861t0 251,1 86159 86188 86217 46216 86275 86103 86332 86361 86190 86419 251.2 46444 86506 86535 a6564 86592 46621 86650 46679 86708 251.3 46737 46766 8679' 45s21 86453 86881 86910 46939 85968 86997 251.1 47426 87055 87084 87113 47142 47170 47199 47224 47257 47246 251.5 4ft15 47744 En77 8740? 47431 47459 87488 47517 47546 47t75 251.6 47641 87633 8766? 97691 47724 47744 47777 87806 87835 47461 251.7 a7a93 87922 8n51 07980 88009 88017 08066 88095 ee1?4 88153 ?51.9 88182 8a2 aaz4a 84269 88290 88126 00355 88584 88413 Aa11? ?51.9 88471 84500 84529 88558 88587 88615 88614 84673 88702 agnl 252.0 88760 48789 48818 88847 aaa76 84904 88933 44962 88991 8t020 2r?.1 89049 89078 89107 89116 89165 89193 492?2 49251 89280 89109 252.? 89338 a9367 49396 89125 891r4 49142 89511 89540 89569 89598 252,3 99677 49656 89685 897L 49771 89800 a9a?9 89858 A9AA7 252,4 09916 89945 90001 90032 90060 90089 90118 94147 - 90176 2r2.5 9020t 90?34 90264 94292 90321 90349 90378 90407 94136 90S6' 252.6 90523 t0552 90501 90610 90638 9A725 90751 252,7 90783 90412 90841 90870 90899 909?7 90956 t0985 91014 91043 252,a 9107? 91101 91130 91159 91184 91216 91215 91271 91303 91332 252,9 91t61 91390 91t05 915t4 9156! 91592 91621 251.0 916t0 91679 91708 91737 91823 91452 91881 9t910 253.1 91939 91964 91997 92026 92A55 92083 9?11? 92141 92174 92199 2r1.2 92224 9?2r7 92?46 92315 92344 92372 9?401 92430 92459 92488 253.3 92517 9?516 9?57' 9?601 92633 92661 92690 92719 9271A 92777 253,4 92806 92415 92464 92893 92922 92954 93008 93037 93066 253.5 9t095 94124 91153 93142 93211 91239 93264 93297 93326 91355 ?53.6 91381 93413 94442 93471 91500 93524 94557 93586 91615 93644 253.7 93673 93742 93731 93764 93749 93817 93846 93875 93904 939!3 251.8 94962 93991 91424 94074 9413' 94193 94222 253.9 94251 94280 94309 94338 94367 94395 94413 91442 94511 254.4 91514 94598 91656 94713 91712 251.1 94429 91858 91487 91973 95442 95011 95060 9t089 254.2 95110 95147 95176 952A5 95?31 95262 95291 9t320 95349 95378 254,3 95107 95436 95465 95523 95551 95580 95609 95638 95667 254,4 95725 95754 95743 95812 9t840 95869 9t898 959?7 95956 254.5 9t985 96043 96072 9610t 961?9 96158 96147 96?16 96245 251.6 96274 96101 96332 96361 96390 96418 96t0t 96531 254,7 96163 96592 96621 966t0 96707 96736 96765 96?94 96423 251.4 96452 96481 96910 96939 96968 96996 9702t 97051 97083 97112 251.9 97174 97199 972?A 97257 97245 97314 97343 9n72 97141 255.0 97134 97488 9n17 97546 97574 97603 97632 97661 97694 255.1 97719 978A6 9785t 973 97492 97921 9795a 97979 ?55.2 98008 98057 98066 98095 98121 98152 94141 98?10 98239 98268 25t.3 94297 94326 98355 3U 98411 9&.11 94474 98199 9852e 94557 ?55.4 98586 98615 973 98702 94730 94759 98784 94417 98846 2r,.5 94475 98904 98933 98962 94991 99019 99048 99077 99106 99135 ?r5.6 99193 99?22 99251 99?aA 99308 99337 99366 99395 99424 255.7 99453 99182 99511 99540 99569 99197 99626 99615 99681 99713 255.4 9971? 99800 99829 99858 99886 99915 99973 100000 RESERVOIRAREA TABLE

JANUARY1997 SURVEY

ELEVAT]ONIIICREI.IENT IS INTERPOLATEDTOONE HUNOREDTH FOOT ELEV. FEET .00 .01 .02 ,05 .04 .0t .06 .07 .08 .09

255,9 100030 100060 100090 100120 100150 100ta0 100200 10o2to 100260 100290 256,0 100320 100350 100380 100410 100460 100490 100520 100550 100580 256,1 100610 100640 100670 100700 100720 t00750 100780 100810 100840 100870 256,2 100900 100930 t00960 100980 101010 101040 101070 101100 l0ll30 101160 ?16.3 r01190 101220 101240 1A1270 101100 101330 101360 101390 101420 101450 256.1 101440 101t00 101510 101560 t01590 101620 101650 101680 101710 101740 256.5 101760 101790 101820 1016t0 101880 101910 101940 101970 102000 10?020 256,6 102050 102080 102110 102140 142170 10?200 102240 1A2260 102280 102310 256.f 102310 102170 102400 1021J4 102460 142194 102520 102540 1A2570 102600 256.9 102610 102660 102690 10?724 10?n0 1027A0 102800 10?E30 102860 1028t0 ?56.9 1AZ9Z0 102950 102980 10t010 103040 103060 10t090 103120 103150 101180 ?r7.0 105210 t03240 103?70 105t00 103330 10t550 t03380 101410 105440 103170 ?r7.1 103t00 105510 103560 103590 101620 103640 103670 103700 101rJ0 103760 257.2 10t790 103820 105850 103880 103900 103930 103960 103990 10/.020 104050 2r7.3 104080 10/.110 104140 104160 101190 144224 104210 104?80 t04310 104340 257.4 104170 104400 10!124 104450 104480 104510 104510 104570 104600 -.1046t0 257.5 101660 104680 104710 101n0 104000 101830 104860 104890 101920 257.6 104940 144970 105000 105030 105060 105090 105120 105150 105180 105200 257.7 105250 105260 t05490 105320 105150 105180 1054r0 105110 105460 105190 257.4 1055?0 105550 105580 105610 105640 10t670 105700 105720 105750 105780 257,9 105810 105840 105870 105900 105930 105t60 1059E0 106010 106010 106070 ?58.0 106100 106110 106160 106190 1A6ZZO 146210 106270 106300 106t10 106360 258.1 106390 106120 106450 106480 106500 106530 106560 106t90 1066?0 106650 2r4.2 106640 106710 106710 106764 106790 106820 106850 106840 106910 106910 258.3 106970 107000 107020 107050 107080 107110 107140 107170 107200 107230 254.4 147260 107280 107t10 107340 107474 102400 107130 147160 107190 147524 ?58,5 147540 147570 107600 107630 147660 107690 107720 107750 1077a0 107800 ?r4,6 107830 107860 107890 107920 107950 107980 108010 108040 108060 108090 258.7 108120 108150 108180 108210 r08240 108270 108100 108320 108350 108380 25a.8 108410 108440 108/74 108t00 108530 108560 108580 108610 108640 108670 ?54.9 108700 108Zl0 108760 108790 108820 1088,40 108870 108900 108930 108960 259.0 108990 109020 109050 109080 109110 109130 109160 109190 109220 109250 259.1 109280 109510 109340 109370 109400 109420 109450 109480 109510 109510 259.? 109570 r09600 109650 109660 109580 109710 109710 1AgnO 109800 109830 259.3 109860 109890 109920 109940 109970 110000 110030 110060 110090 110120 259.4 110150 110140 110200 1102t0 110260 r 10290 110320 110350 110380 I10410 259.5 110440 I10460 110/.90 110520 110550 110580 110610 110640 110670 110700 259.6 114f20 110750 110780 110810 110840 110870 110900 110930 110960 110980 259.7 111010 111040 111070 111100 111110 111160 111190 1112?0 111240 111274 259.8 111300 111330 111360 111390 111124 111450 111480 111500 111510 111560 ?59.9 111590 111620 111650 r11680 111710 111740 111760 111790 1118?0 111850 260.0 1tt88o fi UJ i E q 75.0@ I,sm,ooog -e

1,000,000

--:.- SURFACEAREA x CAPACITY

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\ FIGURE2 WRIGHTtT PATMANPATMAI\ LAKE I-ocationof SurveyData

\ \ 1'-12000' FIGURE3 WRIGHTPATMAN LAKE ShadedRelief

t90 - 207.5 7q7.5- 2tO 2to,212.5 I 2t2.5- 2t5 T 2t5- 2t7.5 2t7.5- 224 220- 222.5 E222.5- ZU 225- ?27.5 227.5- 230

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PREPAREDBYr TWDB APRIL 1997 FIGURE4 WRIGHTPATMAN LAKE

I l

'1"=12000'

PREPARBDBYr TWDB APRIL 1997 WRIGHT PATMAN LAKE A Contour Map

B G

B A

C

C

E

D

BOWIE AND CASS COUNTIES

F

E

F D G

EXPLANATION

Islands

10 Foot Contour Lines

2 Foot Contour Lines

2 Foot Contour Lines

Conservation Pool Elev. 220 Feet

Normal Operating Level 230 Feet

Cross Section Lines

PREPARED BY: TEXAS WATER DEVELOPMENT BOARD APRIL 1997