Computation of Flow Through Water-Control Structures Using Program DAMFLO.2

Open-File Report 2003-473
By:  and 



As part of its mission to collect, analyze, and store streamflow data, the U.S. Geological Survey computes flow through several dam structures throughout the country. Flows are computed using hydraulic equations that describe flow through sluice and Tainter gates, crest gates, lock gates, spillways, locks, pumps, and siphons, which are calibrated using flow measurements. The program DAMFLO.2 was written to compute, tabulate, and plot flow through dam structures using data that describe the physical properties of dams and various hydraulic parameters and ratings that use time-varying data, such as lake elevations or gate openings. The program uses electronic computer files of time-varying data, such as lake elevation or gate openings, retrieved from the U.S. Geological Survey Automated Data Processing System. Computed time-varying flow data from DAMFLO.2 are output in flat files, which can be entered into the Automated Data Processing System database. All computations are made in units of feet and seconds. DAMFLO.2 uses the procedures and language developed by the SAS Institute Inc.
Publication type Report
Publication Subtype USGS Numbered Series
Title Computation of Flow Through Water-Control Structures Using Program DAMFLO.2
Series title Open-File Report
Series number 2003-473
DOI 10.3133/ofr03473
Edition -
Year Published 2004
Language ENGLISH
Description 109 p., 49 fig., 1 table
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