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Integration of an ARC/INFO GIS with HEC-1

by J. J. Warwick, Univ of Texas at Dallas, Richardson, United States,
S. J. Haness, Univ of Texas at Dallas, Richardson, United States,
R. O. Dickey, Univ of Texas at Dallas, Richardson, United States,



Document Type: Proceeding Paper

Part of: Water Resources Planning and Management and Urban Water Resources

Abstract:

A hypothetical watershed was constructed to test the efficacy of using an ARC/INFO Geographic Information System to provide input for the U.S. Army Corps of Engineers HEC-1 hydrologic model. Difficulties were encountered in using the TIN module to accurately assess average rainfall intensities and in using the label command to find watershed subbasin centroids. In addition, the control of output format was rather cumbersome. The use of this type of expensive system (capital cost for software and equipment, and operating cost for personnel training and digitization) may not generally be warranted for projects which are limited in scope (hydrologic analysis only with a limited number of future alternatives).

Subject Headings: Geographic information systems | Hydrologic models | Information systems | Rainfall intensity | Watersheds | Rain water | Computer models | United States

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