Chapter 2520 - Watershed Protection and Management

U.S. Forest Service. 1992a. Chapter 2520 - Watershed Protection and Management. In FSM 2500 - Watershed and Air Management. R-8 Supplement 2500-92-1. . Available at: http://www.fs.fed.us/im/directives/field/r8/fsm/2500/2520.html. Accessed January 5, 2010.