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United States Department of Agriculture

Agricultural Research Service

Research Project: Water Erosion Prediction Project

Location: National Soil Erosion Research

Project Number: 5020-12130-003-07-I
Project Type: Interagency Reimbursable Agreement

Start Date: Jul 1, 2014
End Date: Sep 30, 2017

The goal of this project is to develop the science portion of the Water Erosion Prediction Project (WEPP) model and provide the framework for NRCS to integrate WEPP into the NRCS business environment that will address sheet and rill erosion, concentrated flow erosion and small watershed erosion prediction as a process-based model. Specific objectives are: Develop the basic ARS version of WEPP for NRCS WEPP hillslope profile simulations as well as small watershed applications; Develop WEPP applications to web-based with GIS capabilities to calculate slope and length of slope, and concentrated flow paths; Develop the NRCS version of WEPP to be able to get its vegetation, operations, and residue data from the NRCS Land Management Operations Database (LMOD); Develop the capability for WEPP to use existing land management systems in LMOD as inputs into WEPP; Develop WEPP to use the NRCS soil data mart as source of soil data; Develop WEPP to evaluate risks and probability of certain soil erosion events; and, Develop WEPP to be web-based application.

Update the climate data for both the WEPP and WEPS erosion prediction models; Provide the additional science programming of the WEPP Watershed Model to allow the use of LiDAR or Digital Elevation Maps at the field or small watershed scale to analyze slopes, length of slopes, and concentrated flows; Provide additional science programming to develop the WEPP Management Editor for use in the web-based model applications; and, Perform an analysis of the differences between the WEPP and RUSLE2 erosion model predictions for locations across the U.S., and publish the findings in a peer-reviewed journal article.

Last Modified: 10/16/2017
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