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CAP - Culvert Analysis Program VERSION/DATE: Version 97-08c 1999/11/15 OPERATING SYSTEM: DOS DISTRIBUTOR: USGS DOCUMENTATION (152 Pages) Bodhaine, G.L., 1968, Measurement of peak discharges at culverts by indirect methods: U.S. Geological Survey Techniques of Water-Resources Investigations, book 3, chap. A3. USER’S GUIDE TO THE U.S. GEOLOGICAL SURVEY CULVERT ANALYSIS PROGRAM, VERSION 97-08 Water-Resources Investigations Report 98-4166 ABSTRACT (CAP) follows USGS standardized procedures for computing flow through culverts. It can be used to develop stage-discharge relationships for culverts and to determine discharge through culverts from high water marks. It will compute flows for rectangular, circular, pipe arch, and other nonstandard shaped culverts. METHOD The program solves the 1-D steady-state energy and continuity equations for upstream water-surface elevation given a discharge and a downstream water-surface elevation. DATA REQUIREMENTS Measurements of culvert geometry, culvert roughness, and culvert inlet and measurements of approach section geometry and roughness. OUTPUT OPTIONS Two outputs are available--a condensed table of computed values that is meant for use by other computer programs and a text form that summarizes the computations made by the program.
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