High Quality Content by WIKIPEDIA articles! Great Falls Dam is a hydroelectric dam on the Caney Fork, straddling the county line between White County and Warren County in the U.S. state of Tennessee. It is the only dam outside the Tennessee River watershed owned and operated by the Tennessee Valley Authority. The dam impounds the 1,830-acre (740 ha) Great Falls Lake, and its tailwaters feed into Center Hill Lake. The completion of Great Falls Dam in 1917 was an engineering triumph, marking the first successful attempt to impound the volatile and flood-prone Caney Fork. The dam is also notable for its design, utilizing a mostly-underground conduit to carry water from the reservoir via a tributary to the Power House 0.75 miles (1.21 km) downstream from the dam.