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 our day-to-day activities, in operating a facility like 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 and to comply with environmental legislation, rules, and  regulations.

We encourage environmental stewardship at every level throughout the organization.

Flow Update

June 30, 2023

Current conditions:

Koocanusa Reservoir elevation: 2451.40 feet
Koocanusa Reservoir inflow: ~13.1 kcfs
Libby Dam outflow: 9.0 kcfs
Kootenai River elevation at Bonners Ferry: 1747.62 feet
Current changes and highlights:

The following outflow changes are scheduled for Tuesday, 4 July:
-Outflows will decrease from 9.0 kcfs to 8.5 kcfs at 2300 MDT

Libby outflows will ramp down from 9.0 kcfs to 8.5 kcfs next week and will remain at 8.5 kcfs until further notice. Libby Dam is currently being operated to manage the summer refill of Lake Koocanusa, with a maximum pool estimate of 2452 ft by mid-July.

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 the fall can be found here: