Old Hickory Lock and Dam
| Old Hickory Lock and Dam | |
|---|---|
The Old Hickory Lock and Dam forms Old Hickory Lake.
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 Location of Old Hickory Lock and Dam in Tennessee
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| Country | US |
| Coordinates | 36°17′48″N 86°39′20″W / 36.29667°N 86.65556°WCoordinates: 36°17′48″N 86°39′20″W / 36.29667°N 86.65556°W |
| Purpose | Flood, Navigation, Power |
| Status | Operational |
| Construction began | January 1952 |
| Opening date | December 1957 |
| Owner(s) | USACE |
| Dam and spillways | |
| Spillways | 6 |
| Reservoir | |
| Creates | Old Hickory Lake |
| Total capacity | 467,000 acre·ft (0.576 km3) |
| Catchment area | 11,674 sq mi (30,240 km2) |
| Surface area | 22,500 acres (9,100 ha) |
| Maximum length | 97.3 mi (156.6 km) |
Old Hickory Lock and Dam is a dam located in middle Tennessee on the Cumberland River at river mile 216.2 in Sumner and Davidson Counties, approximately 25 miles (40 km) upstream from Nashville. The reservoir behind the dam is Old Hickory Lake. The dam and lake are named after President Andrew Jackson (nicknamed "Old Hickory"), who lived in the vicinity at The Hermitage.
Old Hickory Lock and Dam was authorized for construction by the Rivers and Harbors Act of 1946 as a unit of a comprehensive development plan for the Cumberland River Basin. The project was designed by the U.S. Army Corps of Engineers and built by private contractors under the Corp's supervision. Construction started in January 1952, and dam closure was completed in June 1954. The project was completed for full beneficial use in December 1957 with the placement of the final hydroelectric power unit in operation.
Old Hickory Reservoir is 97.3 miles (156.6 km) long lying between Nashville and Carthage. The reservoir is essentially a run-of-river type without regulating storage other than for incidental flood control through surcharge operation, and for pondage for power generation and lockages; hence, low water flow of the river will be increased only indirectly through the use and passage of discharges from upstream plants. Such releases, however, result in a more sufficient and higher quality of water for domestic and industrial consumption and use are effective in pollution abatement downstream. Due to the fairly constant level maintained under normal operating conditions, the reservoir is well suited for conservation and recreational purposes. Beginning in 2007, the multi-year altered flow and water temperatures resulting from the emergency maintenance on the Wolf Creek Dam affected Old Hickory like the other Cumberland River reservoirs and resulted in modifications about environmental management.
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