The Annandale region is bisected by Accotink Creek, which in Colonial times was a primary link for ocean-going ships that would load tobacco and other goods where Little River Turnpike - Annandale's oldest road and the first toll road in America - crosses it. With the construction of the Springfield Dam in 1918, Lake Accotink was created to serve as a water source for World War I Army Camp A.A. Humphreys. In 1960, when the lake was no longer needed by the Army, the Fairfax County Park Authority leased the land and finally bought the site in 1965. Today, Lake Accotink is a popular recreation area with bike trails, fishing and boat rentals.