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Oplin Quadrangle

Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:24000
Date: 1983
Creator: Geological Survey (U.S.)
Object Type: Map
System: The Portal to Texas History
Occurrence, Quality, and Availability of Ground Water in Callahan County, Texas (open access)

Occurrence, Quality, and Availability of Ground Water in Callahan County, Texas

Report on the groundwater in Callahan County, including chemical quality analyses, water usage, recharge rates, and storage estimates.
Date: August 1983
Creator: Price, Robert D.; Walker, Loyd E. & Sieh, Thomas W.
Object Type: Report
System: The Portal to Texas History