Stream flow and reservoir water level information may be obtained by calling 1-800-422-3143 toll-free, or use the links below.
Within this section of our site, you’ll find the following links and information:
FAQs About Water Levels and Flows
Learn more about water levels and flow information using our Frequently Asked Questions and Answers (FAQs).
Brownlee Reservoir
Our handy reservoir elevation graphic shows the water level elevations at the different boat ramps on Brownlee Reservoir.
Hells Canyon River Flow
Check out our river flow projections for the Snake River below Hells Canyon Dam.
Water Temperatures
Find out what the water temperature is at Oxbow Dam or for the Snake River at Weiser.
Stream Flow Data
Find maps and flow information about various locations on the Snake River and its tributaries, including Brownlee, Hells Canyon, Swan Falls, Milner Power Plant to Star Falls Reach, and Milner Reach.
Annual Water Resources Reports
Daily records by year in PDF format beginning with 1997.
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.