Describing insloping forest roads with WEPP

Tysdal, L.M.; Elliot, W.J. 1997. Describing Insloping Forest Roads With WEPP.

Keywords: road, WEPP

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Abstract: Watershed applications of WEPP can predict erosion and sedimentation values for small watersheds. A segment of forest road with a cutslope and ditch may be modeled as a small watershed which drains through a culvert and filters down a forested hillslope. The purpose of this paper is to discuss how well WEPP models this type of scenario and whether or not the output values are a good approximation of real runoff and erosion from forest roads. With this information, recommendations can be made when designing or maintaining forest roads to best control erosion and soil loss.
The area developed for an insloping forest road consists of the cutslope, a ditch, the road, culverts spaced at certain intervals, and the hillslope below the culvert where sediment is carried down toward a perennial stream. To develop this scenario in WEPP, each element must be developed individually and then linked together in the watershed structure.

Moscow FSL publication no. 1997e