Geographic Information System Index for the State of Tennessee
Open file rept.
GEOLOGICAL SURVEY NASHVILLE TN
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Recently the use of Geographic Information Systems GIS has increased in Tennessee. As a results of this increase the U.S. Geological Survey, the Tennessee State Planning Office, and the Tennessee Comptroller of the Treasury entered into an agreement to conduct a survey of GIS users within the state. The objectives of the project were as follows 1. To conduct and document a survey and subsequently develop a GIS index data base of existing map coverage, location-specific data bases, available transformation software, and transfer techniques that exist at various state, federal, county, and municipal agencies. 2. To develop suggested standards for digitized data. 3. To promote sharing of data by describing, in general terms, communications techniques that can be used to transfer data from one system to another. 4. To create a map coverage of Tennessee and the 7.5 minute quadrangle maps within the State that would allow identification of existing map coverage for these units through a retrieval from the GIS index data base. Two hundred and sixty-three agencies were contacted. Two hundred and sixteen used maps and kept maps on hand. One hundred and thirty-nine agencies maintained one or more computer system, including personal computers. Forty-eight had minicomputers or mainframe computers. Twenty-five agencies used GIS software. The number of coverage or layers that existed at the time of the survey as computerized digital data for Tennessee was 4,741. One hundred and twenty location-specific data bases were available.
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