Bighorn Lake

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Bighorn Lake
Bighorn Lake WY & MT - SW part.jpg
Southwestern part
LocationBig Horn / Carbon counties in Montana; and Big Horn County in Wyoming
Coordinates45°18′28″N 107°57′27″W / 45.30778°N 107.95750°W / 45.30778; -107.95750Coordinates: 45°18′28″N 107°57′27″W / 45.30778°N 107.95750°W / 45.30778; -107.95750
Primary inflowsBighorn River
Primary outflowsBighorn River
Catchment area20,000 square miles (50,000 km2)
Basin countriesUnited States

Bighorn Lake is a reservoir behind Yellowtail Dam within the Bighorn Canyon National Recreation Area, located in southern Montana and northern Wyoming.[1]


Eastern section of Bighorn Lake reservoir in Bighorn Canyon.

The reservoir is 40 mi (64 km) south of Billings, Montana. It stretches the entire 72 mi (115 km) length of the Bighorn Canyon at full pool. The Lake was created by the 1965 construction of Yellowtail Dam on the Bighorn River, near Fort Smith, Montana.[2]


  1. ^ "National Park Service- Bighorn Canyon".
  2. ^ "National Park Foundation- Bighorn Canyon National Recreation Area".

See also[edit]