Bigfork Mountain Lake Lodge

Friday, May 20, 2011

Kerr Dam - Polson Montana

Plan a visit soon to the Kerr Dam!

Kerr Dam is at “Full Arch Spill” with all 14 gates open.

Kerr Dam’s generating capacity is 194 megawatts and is located at 43069 Kerr Dam Road, Polson, MT 59860

Kerr dam, began operation in 1938, and is 541 feet long and 205 feet high. The installation of Kerr Dam raised the level of Flathead Lake by 10 feet over the natural lake outlet.


Kerr Dam’s 28-mile-long reservoir has a storage capacity of 1.2 million acre-feet of water. Kerr Dam is classified as a “storage generation” project because it uses the water stored in its reservoir to generate electricity.

Kerr Dam is operated under a joint license with PPL Montana and the Confederated Salish and Kootenai Tribes of the Flathead Indian Nation. The CSKT have the option of purchasing and taking over the operation of Kerr Dam in 2015.


Flathead Lake, which lies in the Flathead Valley of northwest Montana, is the largest natural freshwater lake west of the Mississippi. The lake is 28 miles long, up to 15 miles wide and more than 300 feet deep. The Flathead River empties into the Clark Fork River, then empties into the Columbia River. The Columbia then empties into the Pacific Ocean.

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