Seattle District Header Image


Home > Missions > Civil Works > Locks and Dams > Libby Dam


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

April 23, 2018

Current Koocanusa Reservoir elevation: 2359.5 feet
Current Koocanusa Reservoir inflow: ~8 kcfs
Current Libby Dam outflow: 4 kcfs
Current Kootenai River elevation at Bonners Ferry: 1747.9 feet

Current Changes and Highlights:
- Libby Dam outflow will increase to 8 kcfs on Tuesday morning
- Annual Libby Dam Operations Public Meeting on May 3rd

Inflows to Lake Koocanusa have begun to increase this week with the arrival of warmer spring weather. Due to rising inflows, Libby Dam outflow will increase from 4 kcfs to 8 kcfs on Tuesday 24 April, over a 2 hour period staring at 0400 MDT. The April water supply forecast is for a 7189 KAF Apr-Aug inflow volume (122% of average), and sets the end of April reservoir elevation target to 2359.3 ft.

Short term forecasts for Libby Dam elevations and inflow:

Short term forecasts for Libby Dam outflow:

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

Public Information Meeting:

Representatives from the Corps, National Weather Service, and U.S. Fish and Wildlife Service are hosting a public meeting May 3rd in Bonners Ferry, Idaho, to inform the public on Libby Dam operations. Topics include: water supply forecasts, Libby Dam operations, and Kootenai River white sturgeon recovery. Members of the public, elected officials, and stakeholders with an interest in Libby Dam and the Kootenai River are encouraged to attend to learn more about dam operations.

Public Information Meeting Details:
Thursday, May 3, 7-9pm
Boundary County Extension Office
Bonners Ferry, Idaho