Tongue River Dam facts for kids
Quick facts for kidsTongue River Reservoir
Tongue River Dam
|Location||Big Horn County, Montana|
|Primary inflows||Tongue River|
|Primary outflows||Tongue River|
|Basin countries||United States|
|Max. length||5.5 miles (8.9 km)|
|Max. width||1.1 miles (1.8 km)|
|Surface area||3,700 acres (1,500 ha)|
|Water volume||79,071 acre feet (97,533,000 m3)|
|Surface elevation||4,222 feet (1,287 m)|
The earthen dam was constructed in the river canyon in 1939, with a height of 91 feet and a length at its crest of 1824 feet. It impounds Montana's north-flowing Tongue River for flood control and irrigation water storage. The dam and reservoir are owned and operated by the Montana Department of Natural Resources and Conservation.
The 12-mile-long riverine reservoir it creates has a normal water surface of 5.5 square miles, a maximum capacity of 150,000 acre-feet, and normal storage of 69,400 acre-feet. Recreation includes boating, fishing for bass, crappie, walleye and northern pike, and camping in the Tongue River Reservoir State Park. For white-water rafters the Tongue is a Class I river from the Dam downstream (northward) to its confluence with the Yellowstone River.
Tongue River Dam Facts for Kids. Kiddle Encyclopedia.