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<br />. <br /> <br />RI!~ <br /> <br />ABSTRACT <br /> <br />(""') <br /> <br />OCT 0 5'89 <br />COI.ORAOO WA TEA <br />CONS!ftVATION <br />ROARJ"I <br />IRRIGATION WATER-USE GEOGRAPHIC INFORMATION SYSTEM DATA B <br /> <br />to.+. <br /> <br />by David W. Litke <br /> <br />~ <br />N <br /> <br />u.s. Geological Survey, Water Resources Division <br /> <br /> . <br /> DIR <br /> SC V <br /> ASC <br /> F <br /> I <br /> L <br /> E <br />A <br /> <br />An eight-layer geographic information system (GIS) data base was created in <br /> <br />ARC/INFO to manage irrigation water-use data for the Tomichi Creek basin in <br /> <br />west-central Colorado. Data layers are: irrigated-field boundaries, <br /> <br />hydrologic-unit boundaries, 7.S-minute quadrangle boundaries, streams, section <br /> <br />lines, location of water rights, irrigation ditches, and roads. A sourcebook <br /> <br />was compiled for documentation of the data layers. An ARC Macro Language shell <br /> <br />was written to provide easy access to the data base. The main menu of this <br /> <br />shell includes five functions: data-base query, data-base editing, map produc- <br /> <br />tion, application programs, and report generation. <br /> <br />This data-base management system was designed as part of a pilot project, <br /> <br />and the irrigated-field boundary data base will eventually be extended to in- <br /> <br />clude the entire Upper Colorado River Basin in Wyoming, Colorado, Utah, Arizona, <br /> <br />and New Mexico. It is envisioned that this primary data layer (irrigated-field <br /> <br />boundaries) will be maintained at a central location, whereas secondary layers <br /> <br />fill local objectives. <br /> <br />and locally designed applications will be created at satellite locations to ful- <br />