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Free Downloads

Dodson maintains this website as a free resource to the stormwater modeling community. To use the site, you must first register. Your registration information will be used only to apprise you of site updates and new product announcements.

Freeware Programs...

  HydroCalc Hydraulics - Channel & Culvert Analysis/Design (by Dodson)

  SMADA - Stormwater Management and Design Aid

  GVPROF - Open Channel Calculator (Trapezoidal Channels)

  HMR-52 - Application of Probable Maximum Precipitation Estimates (DOS)

Free eShort-Course...

GIS & Hydrology Overview - A 45 minute audio and slide show covering Stormwater Modeling using ArcGIS / HEC-HMS.

Archived Documents and Software...

Hydro-Library - A collection of hydraulic and hydrologic reports and rainfall maps covering the U.S. Includes FHWA and NRCS Hydraulics Publications, NOAA Atlas and HMR Rainfall Info .

HEC-Archives - Archived versions of HEC-1,-2, -HMS and -RAS from the U.S. Army Corp of Engineers Hydrologic Engineering Center.

Technical Papers - Previously presented at conferences by Dodson staff members.

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2012 - Walter P. Moore & Associates, Inc. - Houston, TX, USA