• English, D.B.K.; Froemke, P.; Hawkos, K. 2014. Paths More Traveled: Predicting Future Recreation Pressures on America's National Forests and Grasslands--A Forests on the Edge Report. FS-1034. Washington, DC: U.S. Department of Agriculture (USDA), Forest Service. 36 p.
Given the continuing concern over nonpoint-source pollution, Rocky Mountain Research Station scientists sought to understand how the risk of water quality impairment from nonpoint sources varies across the nearly 3,700 fifth-level watersheds in the U.S. containing lands of the National Forest System.
Water that evaporates is unavailable for use until it falls again elsewhere as precipitation. What remains is available for use by humans and other species, and in a broad sense is our fresh water supply (until it reaches the sea). RMRS researchers estimated water supply across the contiguous 48 states for the period 1981-2010. Political, administrative, and land cover boundaries were mapped over the gridded water supply estimates to indicate the amount of water available in respective land areas.
This study relates Colorado watershed condition with downstream water quality. Water quality is characterized by selected variables (e.g., suspended sediment) measured at a gauge or other inventory point along a river.
Our objective was to develop a consistent nationwide assessment of risk of impaired watershed condition for the nearly 4000 5th-level (10-digit) watersheds containing National Forest System (NFS) land in the contiguous 48 states.