X-DRAIN 2.000 Cross-Drain Spacing -- Sediment Yield Program
Road Width Explanation
Road design What to use Flat travel-way Enter width of travel-way. Insloping road; no ditch treatment; no ruts Enter sum of width of travel-way and inside ditch width. Insloping road; rocked or graveled ditch; no ruts Enter width of travel-way; read output for 10-m (33-ft) drain spacing. Outsloping road; no ruts Enter width of travel-way; read output for 10-m (33-ft) drain spacing. Outsloping road; rutted Enter width of travel-way. None of the above Run WEPP or WEPP:Road.
USDA Forest Service Rocky Mountain Research Station