The Texas Natural Resources Information System (TNRIS), a Division of the Texas Water Development Board, is the state’s clearinghouse for maps, aerial photos, 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.
while meta-data can be found at http://www.tnris.state.tx.us/metadata.htm
TNRIS was established by the Legislature in 1968 as the Texas Water-Oriented Data Bank. In 1972, after four years of growth and diversification, it was renamed the Texas Natural Resources Information System. The mission of TNRIS is to provide a “centralized information system incorporating all Texas natural resource data, socioeconomic data related to natural resources, and indexes related to that data that are collected by state agencies or other entities” (Texas Water Code, 16.021). TNRIS is organized into four sections: Information Services, the Research and Data Center, the Texas Strategic Mapping Program (StratMap) and the Texas/Mexico Borderlands Information Center (BIC).
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