Mansfield Hollow Lake
| Mansfield Hollow Lake | |
|---|---|
Aerial view. Windham Airport can be seen at the right.
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| Location | Mansfield / Windham, Connecticut |
| Coordinates | 41°45′21″N 72°10′52″W / 41.75583°N 72.18111°WCoordinates: 41°45′21″N 72°10′52″W / 41.75583°N 72.18111°W |
| Type | reservoir |
| Primary inflows | Natchaug River, Fenton River, Mount Hope River |
| Primary outflows | Natchaug River |
| Basin countries | United States |
| Surface area | 440 acres (180 ha) |
| Max. depth | 23 ft (7.0 m) |
| Water volume | 2,260,000,000 cu ft (0.064 km3) |
| Surface elevation | 256 ft (78 m) |
| Settlements | Mansfield and Willimantic |
| References | |
| Mansfield Hollow Dam | |
|---|---|
| Official name | Mansfield Hollow Dam |
| Location | Mansfield and Windham, Connecticut |
| Construction began | 1949 |
| Opening date | 1952 |
| Operator(s) | Army Corps of Engineers |
| Dam and spillways | |
| Impounds | Natchaug River |
| Height | 68 ft (21 m) |
| Length | 12,420 ft (3,790 m) |
| Width (crest) | 15 ft (4.6 m) |
| Width (base) | 265 ft (81 m) |
| Reservoir | |
| Creates | Lake Naubesatuck |
Mansfield Hollow Lake is a reservoir resting on the border of Windham County and Tolland County, Connecticut. It was created by the Mansfield Hollow Dam and is entirely contained within Mansfield Hollow State Park and the Mansfield Hollow Wildlife Area. Designed and constructed by the United States Army Corps of Engineers, this dam substantially reduces flooding along the Quinebaug, Shetucket, and Thames rivers. Construction of the project began in 1949 with completion in 1952 at a cost of US$6.5 million. The Mansfield Hollow reservoir is located within the Shetucket River Watershed and is part of the Thames River Basin. Access to the site is available from US Route 6 and State Route 195. The damsite, covering an area of 25 acres (10 ha), was listed on the National Register of Historic Places in 2003.
The project consists of a rolled earth fill dam with stone slope protection 12,420 feet (3,790 m) long and 68 feet (21 m) high. The spillway comprises a concrete weir 690 ft (210 m) in length. The weir's crest elevation is 16 feet (4.9 m) lower than the top of the dam. The permanent lake at Mansfield Hollow Dam, Naubesatuck Lake is 450 acres (1.8 km2) in size. The flood storage area for the entire project covers about 1,880 acres (7.6 km2) in the towns of Mansfield, Windham, and Chaplin, Connecticut. The entire project, including all associated lands, covers 2,472 acres (10.00 km2). The Mansfield Hollow Dam can store up to 16.1 billion US gallons (61,000,000 m3) of water for flood control purposes. This is equivalent to 5.8 inches (150 mm) of water runoff from its drainage area of 159 square miles (410 km2).
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Wikipedia