Bear River at Idaho-Utah State Line, ID
River level and flood forecast · Franklin County
The river is 8.7 ft below flood stage (18.07 ft).
Forecast to hold near 9.4 ft through Mon, Oct 19, 6 AM.
Flow: 453 cubic feet per second (USGS).
The last 7 days and the forecast
NWS forecast issued Mon, Oct 12, 10:23 AM. Forecasts change as rain falls and as upstream water arrives.
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An email when the National Weather Service forecasts Bear River at Idaho-Utah State Line to flood, when it floods, and when it's over.
Flood stages
| Flood stage | 18.07 ft |
| Action stage | 15.82 ft |
| Record crest (June 21, 1983) | 21.72 ft |
What floods at each level
From the National Weather Service, highest first.
- 23 ftThe pasture area adjacent to the Bear River near the Idaho/Utah border will be inundated.
- 22 ftThe pasture area adjacent to the Bear River near the Idaho/Utah border will become inundated.
- 21 ftThe area adjacent to the Bear River near the Idaho/Utah border will be inundated. The concrete slab of shed and powerpole are affected at about 20 feet of stage. Areas on both sides of banks are relatively flat agricultural lands with no structures other than the old metal shed.
- 18.07 ftLowland and crop field flooding is possible from below Oneida Narrows Dam downstream through Riverdale, the Preston area and into the Cache Valley.
- 15.82 ftFields and low-lying areas near the river below Oneida Narrows Dam downstream through Riverdale, the Preston area and into the Cache Valley may experience seep and ponding. The river may be nearing bankfull in a few locations.
Highest crests on record
- 21.72 ft — June 21, 1983
- 21.2 ft — June 14, 1984
- 21.11 ft — March 12, 1985
- 20.25 ft — June 12, 1971
- 20.04 ft — May 9, 1982
Recent crests: 11.05 ft (June 28, 2021) · 13.16 ft (March 25, 2020) · 14.23 ft (April 17, 2019) · 14.11 ft (March 24, 2018) · 17.66 ft (February 11, 2017)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (BIUI1); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.