Track: Water Resources
HEC-PrePro An ArcView Preprocessor for HEC's Hydrologic Modeling System
Francisco OliveraSeann Reed , David Maidment
HEC-PrePro v. 2.0 -- a system of ArcView GIS scripts and associated controls- has been developed to extract hydrologic, topographic and topologic information from digital spatial data of a hydrologic system, and to prepare an input file for the Hydrologic Modeling System (HMS) developed by the Hydrologic Engineering Center (HEC) of the United States Army Corps of Engineers. Starting from the DEM and a SCS curve number grid, HEC-PrePro v. 2.0 delineates streams and watersheds, calculates parameters for each of them, determines their interconnectivity, and prepares an input file for HMS that includes the computed hydrologic parameters. After running HMS, hydrographs at any selected point in the river system can be obtained. Using HEC-PrePro v. 2.0, the determination of physical parameters for HMS is a simple and automatic process that accelerates the setting up of a hydrologic model and leads to reproducible results.
Francisco Olivera
University of Texas
J.J. Pickle Research Campus, Bldg. # 119
Austin, TX 78712
USA
Telephone: (512) 471-0570
Fax: (512) 471-0072
E-mail: folivera@mail.utexas.edu