C.E. Ranzau Jr. J. L. Strause 1982 <p>This report, which was prepared in cooperation with the City of Houston, the Harris-Galveston Coastal Subsidence District, and the Texas Department of Water Resources, presents data on water-level changes during 1977-82 and 1981-82 in the Chicot and Evangeline aquifers (fig. 1-4) and data on measured compaction 1973-82 (fig. 5). During these periods, ground-water pumping decreased in Galveston County and eastern Harris County and increased in northern and western Harris County (Gabrysch and Ranzau, 1981).</p> <p>Water levels in about 550 wells were used to construct the maps showing water-level changes. Compaction data were obtained from nine wells equipped with compaction monitors.</p> application/pdf 10.3133/ofr82328 en U.S. Geological Survey Approximate water-level changes in wells in the Chicot and Evangeline aquifers, 1977-82 and 1981-82, and measured compaction 1973-82, in the Houston-Galveston region, Texas reports