Approximate water-level changes in wells in the Chichot and Evangeline aquifers, 1977-85 and 1984-85, and measured compaction, 1973-85, in the Houston-Galveston region, Texas

This report, which was prepared in cooperation with the City of Houston and the Galveston Coastal Subsidence District, present data on water-level changes during 1977-85 and 1984-85 in the Chicot and Evangeline aquifers (figs. 1-4) and data on measured compaction 1973-85 (fig. 5).

Water levels in about 500 wells were used to construct the maps showing water-level changes.  Compation data were obtained from 12 wells equipped with compaction monitors (fig. 6).