Cooney Dam

Cooney Dam 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 ft, and a length of 2260 ft 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 mi2, a maximum storage capacity of 24195 acre feet, and a normal capacity of 14000 acre feet. Recreation includes boating, camping, hiking, and fishing for walleye and rainbow trout. The state maintains the adjacent Cooney State Park.