You can obtain stream flow and reservoir water level information by calling 1-800-422-3143 toll-free, or follow the links below.
Idaho Power River Flow and Reservoir Information
Gages provide river flow readings for various locations along the Snake River and its tributaries, including:
- Hells Canyon
- Swan Falls
- Milner Power Plant to Star Falls Reach
- Milner Reach
We measure, collect and prepare data that helps government agencies manage water and assess the risk of floods, droughts and other water conditions.
We offer a variety of ways to access flow information:
Find the stream flow area and gages you’re seeking.
The Station List provides links to the stream flow stations.
Can’t find what you want? Check out our Frequently Asked Questions.
Other flow-related sites providing data for portions of the Snake River, not influenced by Idaho Power, include: