Snake River near Heise

1. 11.00 ftMajor flooding in Menan-Roberts area. Interstate 15 may be closed due to flooding. County road bridges will begin to wash out.
2. 9.50 ftFlooding can be expected in the Menan-Roberts area.
3. 8.00 ftFlooding near the Warm Springs Resort area is possible.
4. 6.25 ftAction Stage 6.25 ft. Actual flooding is limited to islands and bars and levees on both banks of the Snake River, between the US HWY 20 bridge and the Heise area. Channel changes, including flows into high water channels, may impinge upon levees in the reach and threaten their structural integrity, leading to a breach and possible flooding outside of the levee system. Actions by local agencies may include responding to potential breaches and conducting emergency repairs.

Most recent crests

• July 11, 2022: 5.98 ft
• July 27, 2021: 6.62 ft
• June 5, 2020: 7.62 ft
• April 24, 2019: 6.76 ft
• June 19, 2018: 7.66 ft
• June 14, 2017: 8.36 ft
• June 8, 2016: 6.59 ft
• May 14, 2015: 6.79 ft
• June 9, 2014: 7.23 ft
• May 20, 2013: 6.61 ft

• UpstreamSnake River at Irwin
• DownstreamSnake River at Lorenzo
• Eastern Idaho Reservoirs at Ririe Dam
• Willow Creek (Eastern ID) at Ririe Dam near Ririe
• Willow Creek (Eastern ID) at Tex Creek
• South Fork Teton River at Rexburg
• Snake River at Menan
• Henrys Fork at Rexburg
• North Fork Teton River at Sugar City

Forecasts by the Northwest River Forecast Center. Forecasts are issued routinely year-round. Stage may be affected by ice during winter months.

Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service. Streamflow and the daily record from the U.S. Geological Survey.