Agricultural Extension Service, South Dakota State College
Wherever you live, you are within a watershed. Your farm, ranch, home on a town lot, or your business in the city are all within the natural boundaries of some watershed. All the lands and waters of the nation are bounded by natural drainage divides.
Paulson, Joseph and Kerr, Fay, "Organizing Watersheds in South Dakota" (1961). SDSU Extension Circulars. 596.