“…During 1973 74, the suspended-sediment yield of the Coal River and its tributaries was 1,200,000 tons of sand, silt, and clay (Bader, Chisholm, Downs, and Morris, 1977), 800 tons per square mile per year. During the same period, Turtle Creek, a tributary to the Little Coal River and the construction route of Appalachian Corridor G, a divided, four-lane highway, yielded 34,000 tons of suspended sediment, or 1,400 tons per square mile per year.…”