TY - JOUR T1 - Subsurface drainage effects on erosion JF - Journal of Soil and Water Conservation SP - 167 LP - 172 VL - 37 IS - 3 AU - R. W. Skaggs AU - A. Nassehzadeh-Tabrizi AU - G. R. Foster Y1 - 1982/05/01 UR - http://www.jswconline.org/content/37/3/167.abstract N2 - A means to evaluate the effects of combination subsurface/surface drainage systems on erosion was developed by coupling the drainage simulation model, DRAINMOD, with the CREAMS model for simulating erosion. Use of the coupled model was demonstrated in an analysis of the effects of artificial drainage on erosion for Goldsboro sandy loam soil in eastern North Carolina. The simulation showed that erosion on Goldsboro soil with an average slope of 2 percent could be reduced appreciably with subsurface drainage. For example, predicted average annual rates of erosion declined by a factor of 10, from 9 to 0.9 metric tons per hectare (4 to 0.4 tons per acre) by changing the drainage system from one with good surface drainage and poor subsurface drainage to one with poor surface drainage and good subsurface drainage. Subsurface drainage, therefore, should be considered as a possible best management practice for reducing erosion on relatively flat land. ER -