Abstract
ABSTRACT: A micro computer based Watershed Information System (W.LS.) is developed to assist in the preparation of input files for the hydrologic simulation model HEC‐1. This system consists of three phases. Phase I utilizes the capabilities of AutoCAD version 9 and three programs, BASINS, PLANES, and CHANNELS, to extract, organize, and display watershed data. Phase II uses the program CN to calculate some HEC‐1 parameter values. Phase II utilizes the program HECUPDATE to create HEC‐1 input files. The system input includes topographic, soils, land use, watershed geometry data, and a skeletal HEC‐1 input file. Output from the system includes a summary User Reference File, a Soils File, a Land Use File, a Watershed Geometry File, a Curve Number File, and a HEC‐1 input file, which is ready to run. The W.I.S. has been applied to Macks Creek Watershed in southwest Idaho.
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