This report, which was prepared in cooperation with the City of Houston and Harris-Galveston Coastal Subsidence District, presents data on water-level changes during 1977-84 and 1983-84 in the Chicot and Evangeline aquifers (figs. 1-4) and data on measured compaction 1973-84 (fig. 5).
Water levels in about 550 wells were used to construct the maps showing water-level changes. Compaction data were obtained from 12 wells equipped with compaction monitors (fig. 6).