Water Quality & Quantity Conservation

Hydraulics and Hydrology - Tools and Models

AGNPS (AGricultural Non-Point Source Pollution Model, 2009) Updated!
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 (Version 1.11 of WinTR-20, March 2009) Updated!
NRCS Geo-Hydro (ArcView GIS interface to Win TR-20, March 2009)
WinTR-55 (Windows version of TR-55, 2009) Updated!
frequency curves (frequency curve determination via Bulletin 17b) Updated!
EFH2 (peak discharge determination, 2003)
Other models (provided, but no longer supported)