Soil and Water Engineering
> Erosion Modeling (FS WEPP)
FS WEPP is a set of interfaces designed to
allow users to quickly evaluate erosion and sediment delivery potential
from forest roads. The erosion rates and sediment delivery are predicted
by the Water Erosion Prediction Project (WEPP) model, using input
values for forest conditions developed by scientists at the Rocky
Mountain Research Station.
The Water Erosion Prediction Project (WEPP)
soil erosion model is being developed by an interagency group of
scientists including the USDA's Forest Service, Agricultural Research
Service, and Natural Resources Conservation Service, and the Department
of Interior's Bureau of Land Management and Geological Survey. Scientists
from these agencies throughout the United States have been working
since 1985 to develop WEPP to replace the Universal Soil Loss Equation
The WEPP model is a complex computer program
that describes the processes that lead to erosion. These processes
include infiltration and runoff; soil detachment, transport, and
deposition; and plant growth, senescence, and residue decomposition.
For each day of simulation, WEPP calculates the soil water content
in multiple layers and plant growth/decomposition. The effects of
tillage processes and soil consolidation are also modeled.
WEPP can be run from an MS DOS set of input
screens or from a Windows interface currently under development.
In both versions, a set of file builders assists the user in building
or altering input files which can include more than 400 input variables
for a single run.
William J. Elliot, Project Leader
Randy B. Foltz, Research Engineer
David E. Hall, Computer Specialist
Peter R. Robichaud, Research Engineer
Paul G. Swetik, Computer Specialist