|Keyhole State Park|
|Location||Moorcroft, Crook, Wyoming, United States|
KEYHOLE STATE PARK Latitude and Longitude:
|Area||15,890 acres (64.3 km2) |
|Elevation||4,088 ft (1,246 m) |
|Operator||Wyoming Division of State Parks and Historic Sites|
|Website||Keyhole State Park|
Keyhole State Park is a public recreation area surrounding the Keyhole Reservoir near the town of Moorcroft in Crook County, Wyoming.  The state park is managed by the Wyoming Division of State Parks and Historic Sites.
The Keyhole Reservoir, an impoundment of the Belle Fourche River, was formed by the Keyhole Dam project of the United States Bureau of Reclamation, completed in 1952. The reservoir has a total capacity of 334,200 acre-feet and water surface of 13,700 acres, which provides storage for irrigation, flood control, fish and wildlife conservation, recreation, sediment control, and municipal and industrial water supply. Although located in Wyoming, the reservoir's waters are allocated by compact to go 90 percent to South Dakota and 10 percent to Wyoming. 
- "Keyhole Reservoir". Geographic Names Information System. United States Geological Survey.
- "Table 1. Facilities managed by Wyoming State Parks, Historic Sites and Trails" (PDF). SOAR 2021. Wyoming Department of State Parks and Cultural Resources. p. 12. Retrieved August 31, 2017.
- "Keyhole State Park". Wyoming State Parks, Historic Sites & Trails. State of Wyoming. Retrieved August 31, 2017.
- "Keyhole Unit". U.S. Department of the Interior, Bureau of Reclamation. Retrieved November 24, 2015.
- "Keyhole State Park Brochure" (PDF). Wyoming Department of State Parks and Cultural Resources. Retrieved November 24, 2015.
- Keyhole State Park Wyoming State Parks, Historic Sites & Trails
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