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Geospatial Applications

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• Texas Natural Resources Information System (TNRIS) a Division of the Texas Water Development Board, is the state's clearinghouse for maps, aerial photographss, and digital natural resources data.  TNRIS also serves as a distribution center for U.S. Geological Survey maps and has numerous other map collections available for in-house use or reproduction.
• Edwards Aquifer Map Viewer - Use the Edwards Aquifer Map Viewer to see the geographic areas of Texas that are subject to the TCEQ's regulation under the Edwards Aquifer Protection Program.