“…The importance of EG erosion is well established (Foster, 1986;Thorne et al, 1986;Poesen et al, 1996;Nachtergaele and Poesen, 1999;Poesen et al, 2003), but only a few process-based hydrologic or erosion models have included EG subroutines: Ephemeral Gully Erosion Model (EGEM; Woodward, 1999); Revised Ephemeral Gully Erosion Model (REGEM; Gordon et al, 2007); Chemicals, Runoff, and Erosion from Agricultural Management Systems (CREAMS; Knisel, 1980); Groundwater Loading Effects of Agricultural Management Systems (GLEAMS; Knisel, 1993); Water Erosion Prediction Project (WEPP; Flanagan and Nearing, 1995); and Annualized Agricultural Nonpoint Source Model (AnnAGNPS; Bingner and Theurer, 2003). These models, however, do not predict the location of EGs, which must be input into the models.…”