This RUSLE2 User’s Reference Guide describes RUSLE2 in detail in semi-technical language. This Guide describes how RUSLE2 works, how to select input values, how to apply RUSLE2 to make erosion estimates for the wide range of conditions represented by RUSLE2, how to interpret values computed by RUSLE2, how to evaluate RUSLE2’s adequacy for conservation and erosion control planning, RUSLE2’s accuracy, and how to conduct sensitivity analysis with RUSLE2.