U.S. DEPARTMENT OF THE INTERIOR IN COOPERATION WITH THE SCIENTIFIC INVESTIGATIONS MAP 2968 U.S. GEOLOGICAL SURVEY HARRIS-GALVESTON SUBSIDENCE DISTRICT, Location of borehole extensometer sites—SHEET 17 OF 18 CITY OF , Kasmarek, M.C., and, Houston, N.A., 2007, Water-level altitudes 2007 and water-level changes FORT BEND SUBSIDENCE DISTRICT, AND in the Chicot, Evangeline, and Jasper aquifers and compaction 1973–2006 LONE STAR GROUNDWATER CONSERVATION DISTRICT in the Chicot and Evangeline aquifers, Houston-Galveston region,

95°30' 95°15'

TEXAS 19 Study area YZ

95°45' WALKER ¦¨§45 30°45' COUNTY YZ75 30°45' ¤£190 WEST FORK LOCATION MAP SAN HUNTSVILLE YZ30 156 96° JACINTO YZ LAKE LIVINGSTON Lake 45 MONTGOMERY COUNTY ¦¨§ 30 YZ RIVER 95° GRIMES COUNTY YZ150

FM 1375 SAN JACINTO COUNTY

30°30' Creek

B R 30°30' A Z O 90 S YZ C O ¤£59 U LAKE N CONROE T Y Caney 787 105 YZ FM 105 YZ CONROE

Y1774 6 Z 3 3 p WE oo 105 94°45' STState L YZ 30°15' Lake ZY1488 Creek Creek FORK 146 YZ 30°15'

¤£59 YZ321 6 YZ COUNTY SAN

B JA R A C I Z NT O S O WALLER COUNTY HARRIS

R SPRING IVE R FM 1960 Creek 30° ¤£290 YZ249 ¦¨§45 HUMBLE 30° Spring LAKE A TRINITY

U 146 E HOUSTON S Pky YZ T W N N I R o N I ALDINE 61 r ! V ¤£90 t YZ C 94°30' E h LAKE O R

U LIBERTY B HOUSTON COUNTY N e T lt Y SHELDON CHAMBERS COUNTY 548 C YZ RESERVOIR ed ar KATY ¦¨§10 RIVER ADDICKS ¦¨§610 NORTHEAST ¤£90 Addicks Satsuma Rd ! ! ¦¨§10 CHANNELVIEW ¦¨§10 GALENA YZ65 29°45' PARK Buffalo !BAYTOWN 99 BAYTOWN FORT BEND YZ HOUSTON SOUTHWEST ! Bayou 29°45' COUNTY WEST UNIVERSITY B a y BELLAIRE ! o ! u G 225 ra PASADENADEER PARKYZ nd ¦¨§610 EAST END Galveston Rd AZOS P BR k y PASADENA RICHMOND 36 RIVER SUGAR ¤£90 S Sam Houston Pky E YZ LAND CLEAR Clear S Belt MISSOURI BRAZORIA LAKE CITY ! ! SEABROOK ¤£90 COUNTY ¤£59 Creek ! JOHNSON PEARLAND 29°30' ROSENBERG SPACE FRIENDSWOOD YZ87 W CENTER H ¤£59 29°30' A R GALVESTON T 6 O YZ N COUNTY ¦¨§45

B LEAGUE CITY 96° RAZ TEXAS CITY- FM 521 TEXAS CITY 288 94°30' OS YZ ALVIN ! 146 F YZ M 1764 YZ36 C 3 OU YZ NT Y YZ35 YZ168 Oyste

r 94°45' 29°15' RIVE SAN R 4 29°15' 0 GALVESTON 35 0 FM 2 M M F

BERNARD 35 WEST BAY YZ ANGLETON

GULF OF MEXICO

95°

332 R YZ 95°45' IVE 0 8 16 24 MILES CLUTE R Creek LAKE JACKSON

29° 29°

FREEPORT 95°15'

95°30' Figure 17. Map showing location of borehole extensometer sites, Houston-Galveston region, Texas.

Base from U.S. Geological Survey Information regarding water resources in Digital data, 1:100,000 WATER-LEVEL ALTITUDES 2007 AND WATER-LEVEL CHANGES IN THE CHICOT, EVANGELINE, Texas is available at Universal Tranverse Mercator projection http://tx.usgs.gov/ Zone 15 AND JASPER AQUIFERS AND COMPACTION 1973–2006 IN THE CHICOT AND EVANGELINE AQUIFERS, HOUSTON-GALVESTON REGION, TEXAS By Mark C. Kasmarek and Natalie A. Houston 2007