The Water Erosion Prediction Project (WEPP) model is a process-based, distributed parameter, continuous simulation, erosion prediction model for use on
personal computers. The current version (v99.5) available through the Internet is applicable to hillslope erosion processes (sheet and rill erosion), as well as
simulation of the hydrologic and erosion processes on small watersheds.
WEPP Version 99.5 is a bundle containing the erosion model, DOS interface programs, file builders for creating WEPP input files, and graphics output viewer programs. Technical and user documentation is also available. The target machine is an IBM or IBM-compatible personal computer with an 80386 or better CPU, with a math-coprocessor, running MS-DOS 5.0 or greater. Some of the related programs require MS Windows 3.1.
Version 99.5 is a patch to correct errors identified in silage harvest management, as well as errors in multiple OFE hydrology and erosion computations. There is also a new residue management function which allows addition of residue material, though we currently have no interface program that allows access to this function.
There is also a Beta test version of a WEPP Windows interface, which has WEPP model version 99.5 incorporated into its installation. This is a Windows 95/98/NT interface program, and it is currently undergoing testing by the NRCS. The interface is limited at the moment to hillslope and simple watershed model simulations. Work continues on this interface to expand it's capabilities for complex watershed simulations. Follow the Hot Link below if you are interested in trying out this Beta test version of the WEPP Windows interface.