Submitted to: Soil and Water Conservation Society
Publication Type: Abstract Only
Publication Acceptance Date: 3/1/2003
Publication Date: 7/26/2003
Citation: Laflen, J.M., Flanagan, D.C., Frankenberger, J.R., Curse, R.M. CD-ROM. The WEPP model and daily soil erosion estimation. Soil and Water Conservation Society. 2003.
Technical Abstract: WEPP (Water Erosion Prediction Project) is a daily simulation model that every day computes the status of the soil and biomass in a field. If it rains, it computes runoff. If runoff is computed, then sediment detachment and transport are computed for the day of the event. WEPP has components related to hydrology, plant growth, residue decomposition, soil surface and subsurface conditions, and soil erosion. In the daily erosion predict project, WEPP uses break point precipitation furnished from Doppler Radar for precipitation information, and uses the daily information from an Iowa weather network for computations that require weather information. Each NRI point has information related to cropping over a 4 year period. It also contains USLE information related to soil and topography. The NRI also contains the USLE C values. The WEPP soil file is based on the soil type for each NRI point. The topographic data base for WEPP is based on the NRI topographic information. Cropping and management for WEPP is based on the 4 yr cropping history in the NRI and the USLE C value in the NRI. For every NRI point in the state of Iowa, daily erosion is predicted using WEPP.