Water-Level Altitudes 2004 and Water-Level Changes in the Chicot, Evangeline, and Jasper Aquifers and Compaction 1973-2003

This report 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. The Houston-Galveston region comprises Harris,
Galveston, Fort Bend, Waller, and Montgomery Counties and adjacent parts of
Brazoria, Grimes, Walker, San Jacinto, Liberty, and Chambers Counties. The
report was prepared in cooperation with the Harris-Galveston Coastal Subsidence
District, the City of Houston, the Fort Bend Subsidence District, and the Lone
Star Groundwater Conservation District. The U.S. Geological Survey (USGS) has
published annual reports of water-level altitudes and water-level changes for
the Chicot and Evangeline aquifers in the Houston-Galveston region since 1979;
and annual reports of same for the Fort Bend subregion (Fort Bend County and
adjacent areas) since 1990. The USGS published its first water-level-altitude
map for the Jasper aquifer in the greater Houston area (primarily Montgomery
County) in 2001. The 2004 water-level-altitude and water-level-change maps for
the three aquifers are included in this report.

[Summary provided by the USGS.]