Stream flow and reservoir water level information may be obtained by calling
1-800-422-3143 toll-free or use the links below.
Idaho Power River Flow and Reservoir Information
Idaho Power’s Stream Flow Data provides river flow readings for various locations on the Snake River and its tributaries.
Find flow information from gages Idaho Power manages including Brownlee, Hells Canyon, Swan Falls, Milner Power Plant to Star Falls Reach, and Milner Reach.
We measure, collect and prepare data helpful to public and government agencies in assessing hydrologic conditions such as floods or droughts and in managing water resources.
We offer a variety of ways to access flow information:
Map
Find the stream flow area and gages you're seeking.
Station List
The Station List serves up links in alpha order for the stream flow stations.
Area List
This list is organized into four areas including the Lower Snake Payette, Mid-Snake, Salmon and Upper Snake areas.
USGS Number (U.S. Geological Survey)
This is list is organized by the USGS station number, the official record for hydrologic data.
Can't find what you want? Check out our FAQs.
Other flow-related sites providing data for portions of the Snake River, not influenced by Idaho Power, include:
U.S. Geological SurveyIdaho Department of Water Resources. Click the "On-Line Data" and then "River Flows for Recreationists" links.