Scientific Investigations Map 3081
This report, done in cooperation with the Harris-Galveston Subsidence District, the City of Houston, the Fort Bend Subsidence District, and the Lone Star Groundwater Conservation District, is one in an annual series of reports that depicts water-level altitudes and water-level changes in the Chicot, Evangeline, and Jasper aquifers, and compaction in the Chicot and Evangeline aquifers in the Houston-Galveston region, Texas. The report (excluding appendixes) contains 16 sheets and 15 tables: 3 sheets are maps showing current-year (2009) water-level altitudes for each aquifer, respectively; 3 sheets are maps showing 1-year (2008–09) water-level changes for each aquifer, respectively; 3 sheets are maps showing 5-year (2004–09) water-level changes for each aquifer, respectively; 4 sheets are maps showing long-term (1990–2009 and 1977–2009) water-level changes for the Chicot and Evangeline aquifers, respectively; 1 sheet is a map showing long-term (2000–2009) water-level change for the Jasper aquifer; 1 sheet is a map showing site locations of borehole extensometers; and 1 sheet comprises graphs showing measured compaction of subsurface material at the sites from 1973 or later through 2008, respectively. Tables listing the data used to construct the aquifer-data maps and the compaction graphs are included.
First posted July 30, 2009
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Kasmarek, M.C., Houston, N.A., and Ramage, J.K., 2009, Water-level altitudes 2009 and water-level changes in the Chicot, Evangeline, and Jasper aquifers and compaction 1973–2008 in the Chicot and Evangeline aquifers, Houston-Galveston region, Texas: U.S. Geological Survey Scientific Investigations Map 3081, 3 p., 16 sheets, 2 appendixes. (Revised August 11, 2009)
Water-Level Altitudes and Water-Level Changes
Appendix 1—Well Location Maps
Appendix 2—Land-Surface Altitudes for Wells in Harris County from Light Detection and Ranging (LiDAR)-Based Digital Elevation Model