[Science_Parameters: Science_Category='EARTH SCIENCE', Science_Topic='LAND SURFACE', Science_Term='TOPOGRAPHY', Science_Variable_Level_1='TERRAIN ELEVATION']
Slope-Area Computation programEntry ID: USGS_SAC
Abstract: The Slope-Area Computation (SAC) program follows USGS standardized procedures for computing discharge by the slope-area method. SACGUI is a stand-alone, runnable Java Archive (JAR) that interfaces with the SAC command-line Fortran program. SAC solves the 1-D steady-state energy and continuity equations for discharge given upstream and downstream water-surface elevations and hydraulic channel properties. The basic technique is presented in Measurement of Peak Discharge by the Slope-Area Method (Dalrymple and Benson, 1967). SACGUI provides a graphical wrapper around SAC to assist the user in developing the requried input files and viewing the results.
ISO Topic Category
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Role: TECHNICAL CONTACT
Email: h2osoft at usgs.gov
U.S.G.S. Hydrologic Analysis Software Support Program 437 National Center
Province or State: VA
Postal Code: 20192
Role: SERF AUTHOR
Email: Tyler.B.Stevens at nasa.gov
5700 Rivertech Court
Province or State: MD
Postal Code: 20737
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