Do you know free of charge CatchmentSIM-GIS
It is realy a very strong tool for water resources Engineers and managers. It is a very applicable software from Chris Ryan
& ... .
CatchmentSIM is a freely available 3D-GIS topographic parameterisation and hydrologic analysis model.
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WEPP & GeoWEPP Software
) model is a process-based, distributed parameter, continuous simulation, erosion prediction model for use on personal computers running Windows 95/98/NT/2000/XP. More Informations
The Geo-spatial interface for WEPP (GeoWEPP
) utilizes digital geo-referenced information such as digital elevation models (DEM) and topographical maps to derive and prepare valid model input parameters and defaults to start site-specific soil and water conservation planning for a small watershed with a single soil and land use for each sub-catchment. More Informations & Download