A 4,400-acre TVA reservoir spanning Washington and Sullivan counties on the South Fork Holston River, offering boating, fishing for largemouth and smallmouth bass, water skiing, and lakeside residential communities with marina facilities. Boone Lake's proximity to Johnson City and Kingsport makes it the most heavily used TVA reservoir in the immediate Tri-Cities area. Multiple public boat launches, marinas, and waterfront parks provide access to the lake for residents and visitors throughout the warm-weather season.