Report 270 by Carole L. Loskot, William M. Sandeen and C. R. Follett, U.S. Geological Survey | July 1982

Report 270 - Ground-Water Resources of Colorado, Lavaca and Wharton Counties, Texas (pdf - 3.5MB)
Figure 2 (pdf - 4.61MB) - Average Monthly Precipitation at Columbus, Pierce, and Hallettsville, and Average Monthly Temperature at Pierce and Hallettsville
Figure 4 (pdf - 2.38MB) - Geology of Colorado, Lavaca and Wharton Counties
Figure 5 (pdf - 4.61MB) - Geohydrologic Section A-A'. Jackson, Wharton and Fort Bend Counties
Figure 6 (pdf - 4.68MB) - Geohydrologic Section B-B', DeWitt, Lavaca, Colorado and Austin Counties
Figure 7 (pdf - 4.66MB) - Geohydrologic Section C-C', Fayette, Lavaca, Wharton and Matagorda Counties
Figure 8 (pdf - 4.62MB) - Geohydrologic Section D-D'. Fayette, Colorado, Wharton and Matagorda Counties
Figure 9 (pdf - 4.76MB) - Approximate Altitude of the Base of the Evangeline Aquifer
Figure 10 (pdf - 4.72MB) - Approximate Altitude of the Base of the Chicot Aquifer
Figure 14 (pdf - 4.60MB) - Approximate Altitude of Water Levels in Wells Screened in the Chicot Aquifer in 1902
Figure 15 (pdf - 2.06MB) - Approximate Altitude of Water Levels in Wells Screened in the Evangeline and Chicot Aquifers, 1934-37 and 1947
Figure 16 (pdf - 2.13MB) - Approximate Altitude of Water Levels in Wells Screened in the Chicot Aquifer, 1959-60 and 1975
Figure 17 (pdf - 2.00MB) - Approximate Altitude of Water Levels in Wells Screened in the Evangeline Aquifer, 1959-60 and 1975
Figure 18 (pdf - 4.87MB) - Hydrographs Showing Fluctuations of Water Levels in Selected Wells Screened in the Evangeline and Chicot Aquifers
Figure 19 (pdf - 4.75MB) - Approximate Decline of Water Levels in Wells Screened in the Chicot Aquifer, 1947-75
Figure 22 (pdf - 4.82MB) - Chemical Quality of Ground Water from Selected Wells in the Various Aquifers
Figure 23 (pdf - 4.81MB) - Approximate Altitude of the Base of Fresh Water
Figure 24 (pdf - 4.73MB) - Approximate Altitude of the Base of Slightly Saline Water
Figure 25 (pdf - 4.58MB) - Locations of Oil and Gas Fields
Figure 27 (pdf - 4.59MB) - Approximate Aggregate Thickness of Sands Containing Fresh Water in the Chicot Aquifer
Figure 28 (pdf - 4.50MB) - Approximate Aggregate Thickness of Sands Containing Fresh Water in the Evangeline Aquifer
Figure 29 (pdf - 4.72MB) - Transmissivity Values and Areas Most Favorable for the Future Development of Fresh Water in the Chicot and Evangeline Aquifers
Figure 30 (pdf - 4.79MB) - Locations of Wells and Test Holes in Colorado County
Figure 31 (pdf - 4.75MB) - Locations of Wells and Test Holes in Lavaca County
Figure 32 (pdf - 4.75MB) - Locations of Wells and Test Holes in Wharton County
Page 34 (pdf - 2.33MB) - Includes Figure 11: Approximate Withdrawals of Ground Water by Usage and by Aquifer in Colorado County, 1901-1974
Page 35 (pdf - 2.43MB) - Includes Figure 12: Approximate Withdrawals of Ground Water by Usage and by Aquifer in Lavaca County, 1948-1974
Page 36 (pdf - 2.34MB) - Includes Figure 13: Approximate Withdrawals of Ground Water by Usage and by Aquifer in Wharton County, 1901-1974
Page 66 (pdf - 3.50MB) - Includes Figure 26: Comparison Between Surface-Casing Requirements in Oil and Gas Fields and the Base of Sands Containing Fresh and Slightly Saline Water