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Libby Dam

17877 Highway 37

Libby, Montana 59923-7828

Libby Dam Office (406) 293-7751 

Kootenai River Levels Recording (406) 293-3421

For Visitor Information contact the Visitor Center (406) 293-5577



Libby Dam

Libby Dam Project is a multi-purpose water resource development.  Its purposes are flood reduction, hydropower, recreation, and environmental stewardship. We recognize that our day to day activities in operating a facility such as Libby Dam have a direct impact on the environment. Our goal is to operate Libby Dam to minimize negative impacts on the environment through pollution prevention and mitigation, and we are committed to continual improvement.  Our commitment is to comply with environmental legislation, rules, and regulations. We encourage environmental stewardship at every level throughout the organization.

Flow Update

Sept. 29, 2017

Current Koocanusa Reservoir elevation: 2,442.7 feet
Current Koocanusa Reservoir inflow: ~ 3,600 cubic feet per second
Current Libby Dam outflow: 6,000 cubic feet per second
Current Kootenai River elevation at Bonner's Ferry, ID:  1,745.7 feet 

Libby dam outflows are being held at 6,000 cfs for bull trout minimum flows through the end of September. Libby Dam outflows will decrease from 6,000 to 5,000 cfs over two hours starting at midnight Oct. 1.  Flows will decrease again to 4,200 cfs over two hours starting at midnight Oct. 2.  Libby outflows will remain at approximately 4,200 cfs through the month of October in support of a Kootenai Tribe of Idaho's request.

Short term forecasts for Libby Dam elevations and inflows: 

Short term forecasts for Libby Dam outflow:

Additionally, projected inflows and reservoir operations at Libby Dam through next summer can be found here:

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