|Location||Carbon County, Montana|
|Primary inflows||Red Lodge Creek, Willow Creek, Chapman Creek|
|Primary outflows||Red Lodge Creek|
|Basin countries||United States|
|Max. length||2.3 miles (3.7 km)|
|Max. width||1.1 miles (1.8 km)|
|Surface area||1,078 acres (436 ha)|
|Water volume||28,230 acre feet (34,820,000 m3)|
|Surface elevation||4,222 feet (1,287 m)|
Cooney Dam (National ID # MT00001) is a dam in Carbon County, Montana, that creates Cooney Reservoir.
The earthen dam was constructed in 1937 by the State of Montana, with a height of 97 feet, and a length of 2260 feet at its crest. It impounds Red Lodge Creek for irrigation water storage. The dam is owned and operated by the Montana Department of Natural Resources and Conservation.
The reservoir it creates, Cooney Reservoir, has a normal water surface of 1.3 square miles, a maximum storage capacity of 24,195 acre-feet, and a normal capacity of 14,000 acre-feet. Recreation includes boating, camping, hiking, and fishing for walleye and rainbow trout. The state maintains the adjacent Cooney State Park.
- "Cooney Reservoir". Geographic Names Information System. United States Geological Survey.
- "Cooney Dam Fact Sheet" (PDF). Montana Department of Natural Resources and Conservation. Retrieved July 1, 2020. CS1 maint: discouraged parameter (link)
- "Cooney". National Performance of Dams Program, Department of Civil & Environmental Engineering, Stanford University. Archived from the original on March 6, 2016. Retrieved October 16, 2012. CS1 maint: discouraged parameter (link)
- "Cooney, southcentral Montana". FindLakes. Retrieved October 16, 2012. CS1 maint: discouraged parameter (link)
- "Cooney Reservoir". Montana Fish, Wildlife & Parks. Retrieved July 1, 2020. CS1 maint: discouraged parameter (link)
- "Cooney, MT". Reserve America. Retrieved October 16, 2012. CS1 maint: discouraged parameter (link)