* WHAT...Light to moderate valley snow and heavy mountain snow. Several inches of accumulation below 7,000 feet, including 5 to 8 inches in Stanley and Ketchum. One to two feet accumulation above 7,000 feet, including two feet on Galena Summit. Wind gusts as high as around 45 mph. * WHERE...Big Lost Highlands/Copper Basin, Frank Church Wilderness, Sawtooth/Stanley Basin, and Sun Valley Region. * WHEN...From 5 AM Thursday to 5 AM MST Saturday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Thursday morning and evening commutes. Gusty winds could bring down tree branches.
The ideal streamflow range for this section of the river is between 1,000 and 5,000 cubic feet per second (cfs). The class rating for this segment is Class III-IV, with some rapids reaching Class V during peak flow.
The total segment mileage for this run is approximately 20 miles, with the trip typically taking 1-2 days to complete. Some of the notable rapids and obstacles include Jake's and Devil's Tooth, both of which are Class IV rapids that require technical maneuvering.
It is important to note that this section of the river is subject to strict regulations, including a permit requirement for commercial outfitters and a limit on the number of commercial trips allowed per day. Additionally, all boaters are required to wear a personal flotation device at all times while on the river.
| Last Updated | 2025-12-16 |
| River Levels | 465 cfs (3.81 ft) |
| Percent of Normal | 77% |
| Status | |
| Class Level | iii-iv |
| Elevation | ft |
| Streamflow Discharge | cfs |
| Gauge Height | ft |
| Reporting Streamgage | USGS 13147900 |
| Location | Reservations | Toilets |
|---|---|---|
Copper Creek/Garfield Campground
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Iron Bog Campground
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Iron Bog
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Star Hope
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Star Hope Campground
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Lake Creek Trailhead & Campground
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