North Fork Big Lost River at Wild Horse, ID
River level and flood forecast · Custer County
The river is 3.6 ft below flood stage (5.11 ft).
Flow: 32 cubic feet per second (USGS).
The last 7 days and the forecast
NWS forecast issued Sun, Dec 31, 5 PM. Forecasts change as rain falls and as upstream water arrives.
Get flood alerts for this river
An email when the National Weather Service forecasts North Fork Big Lost River at Wild Horse to flood, when it floods, and when it's over.
Flood stages
| Flood stage | 5.11 ft |
| Action stage | 4.75 ft |
| Record crest (May 21, 2006) | 6.41 ft |
What floods at each level
From the National Weather Service, highest first.
- 5.11 ftHomes along the East Fork of the Big Lost River from Wildhorse Creek to Star Hope Creek may see flooding along with lowland flooding from the confluence of Big Lost River North Fork upsteram of the East Fork of Big Lost River to the Copper Basin Airstrip.
- 4.75 ftNear bankfull from confluence of Big Lost River North Fork upstream of the East Fork of Big Lost River to the Copper Basin Airstrip.
Highest crests on record
- 6.41 ft — May 21, 2006
- 6.39 ft — June 12, 1965
- 6.23 ft — May 25, 1967
- 6.18 ft — May 24, 1956
- 6.02 ft — June 5, 2017
Recent crests: 5.46 ft (December 13, 2024) · 4.86 ft (June 7, 2019) · 4.48 ft (May 26, 2018) · 6.02 ft (June 5, 2017) · 4.17 ft (June 6, 2016)
Up and down the river, and nearby
- DownstreamBig Lost River at Howell Ranch, ID
- North Fork Big Wood River near Ketchum, ID
- Big Wood River near Ketchum, ID
- Trail Creek (ID) at Ketchum, ID
- Eastern Idaho Reservoirs at Mackay Dam, ID
- Big Lost River below Mackay Reservoir, ID
- East Fork Big Wood River at Gimlet, ID
- Squaw Creek (ID) below Bruno Creek, ID
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (BLRI1); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.