Tongue River Dam

The Tongue River Dam (National ID # MT00002) is a dam in Big Horn County, Montana, a few miles north of the Wyoming state border. It impounds the Tongue River, creating the Tongue River Reservoir.

Tongue River Dam
map of Tongue River watershed

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.[1] 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.[1] Recreation includes boating, fishing (for bass, crappie, walleye and northern pike), camping (at more than 150 campsites), etc., in the Tongue River Reservoir State Park.[2] For white-water rafters the Tongue is a Class I river from the Dam downstream (northward) to its confluence with the Yellowstone River.[3]

References
  1. "Tongue River Dam". findlakes.com. Retrieved 17 June 2016.
  2. "Montana State Parks :: Tongue River Reservoir". mt.gov. Retrieved 17 June 2016.
  3. "Steam access in Montana". Archived from the original on 10 March 2009. Retrieved 17 June 2016.

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