South Fork Boise River below Anderson Ranch Dam, ID
River level and flood forecast · Elmore County
Normalas of Mon 9:15 PM
Forecast to hold near 0.3 ft through Sat, Oct 17, 6 PM.
Flow: 295 cubic feet per second (USGS).
The last 7 days and the forecast
NWS forecast issued Mon, Oct 12, 1:08 PM. Forecasts change as rain falls and as upstream water arrives.
Highest crests on record
- 10.61 ft — May 13, 2017
- 10.56 ft — May 25, 1956
- 9.18 ft — May 23, 2023
- 9.02 ft — May 23, 2006
- 8.6 ft — April 28, 2012
Recent crests: 5.96 ft (May 8, 2025) · 5.55 ft (April 30, 2024) · 9.18 ft (May 23, 2023) · 4.56 ft (August 13, 2022) · 5.19 ft (June 10, 2021)
Up and down the river, and nearby
- UpstreamSouth Fork Boise River at Pine (near Featherville), ID
- DownstreamBoise River above Lucky Peak Dam, ID
- Canyon Creek at Oregon Trail Crossing, ID
- Boise River near Twin Springs, ID
- Snake River at King Hill, ID
- Mores Creek above Robie Creek, ID
- Southwest Idaho Reservoirs at C J Strike Reservoir, ID
- Bruneau River at Hot Springs, ID
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (ANDI1); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.