United States Department of Agriculture
Natural Resources Conservation Service
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Hydraulics and Hydrology - Tools and Models

  • AGNPS (AGricultural Non-Point Source Pollution Model, 2002)
  • HecRas (Water Surface Profiles, 2003)
  • Cross-Section Analyzer (Hydraulic parameters for uniform flow)
  • HecGeoRas (ArcView GIS Extension for HecRas)
  • SITES (rainfall-runoff for dam and spillway analysis and design, 2002)
  • TR-19 (reservoir storage requirements analysis, 1967)
  • WinTR-20 (Windows version of TR-20, 2005) 
  • NRCS Geo-Hydro (ArcView GIS interface to Win TR-20, 2005)
  • WinTR-55 (Windows version of TR-55, 2005)
  • frequency curves (frequency curve determination via Bulletin 17b)
  • EFH2 (peak discharge determination, 2003)
  • Other models  (provided, but no longer supported)

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