A collection of maps to promote exploration and discovery of interesting Texas features. The first map allows you to find your county, as well as to create your own maps with cities, lakes, parks, WMAs, streams, boat ramps, highways and hillshade. The second map allows you to explore the pattern of urban areas in Texas, with a surprising find in the Texas Panhandle. The third map shows the Texas portion of the USGS karst dataset.

The Edwards and Trinity aquifers are major sources of water in south-central Texas and are both classified as major aquifers by the State of Texas. The population in Hays and Comal Counties is rapidly growing, increasing demands on the area's water resources. To help effectively manage the water resources in the area, refined maps and descriptions of the geologic structures and hydrostratigraphic units (HSUs) of the aquifers are needed. This digital map database presents the detailed 1:24,000-scale bedrock hydrostratigraphic map as well as names and descriptions of the geologic and hydrostratigraphic units of the Driftwood and Wimberley 7.5-minute quadrangles in Hays and Comal Counties, Tex.