The North Fork Holston Watershed (HUC 06010101) is located in southwest Virginia and eastern Tennessee, covering an area of 1,246 square miles. The watershed is characterized by steep, forested hillsides and rugged terrain, with the North Fork Holston River serving as the main water source. The hydrology of the area is influenced by several tributaries, including Little River, Laurel Creek, and Beaver Creek. The watershed receives an average annual precipitation of 45 inches, with snowfall occurring during the winter months. The surface water quality in the watershed is generally good, although it has been impacted by agricultural and urban runoff in some areas. The watershed is also home to several reservoirs, including South Holston Lake and Boone Lake. Interesting climatic facts include that the region experienced a severe drought in the early 2000s, and more recently, has seen an increase in extreme precipitation events.