2025-12-17T17:00:00-07:00
* WHAT...West winds 25 to 35 mph with gusts up to 65 mph possible. 6 to 10 inches of snow above 7,000 feet combined with gusty winds could result in visibility reductions due to blowing and drifting snow. * WHERE...Big Lost Highlands/Copper Basin, Frank Church Wilderness, Lost River Range, Sawtooth/Stanley Basin, Sun Valley Region, and Big Hole Mountains. * WHEN...From 5 AM to 5 PM Wednesday. * IMPACTS...Travel could be difficult, especially for high profile vehicles. Isolated damage to trees, powerlines, signs, and outbuildings is possible, along with isolated power outages. Loose outdoor objects could be blown around. Blowing and drifting snow could result in decreased visibility.
Summary
The ideal streamflow range for this section is between 800-2,000 cfs. This section is rated Class III-IV, making it suitable for intermediate to advanced paddlers. The segment mileage is approximately 26 miles, offering a challenging and exciting experience for those who choose to embark on this journey.
The river features several notable rapids, including Deer Creek Falls, which is a Class IV rapid that requires technical maneuvering skills. The Lunch Counter is another rapid that is infamous for its large waves, making it a Class III+ rapid. Additionally, Big Mallard Creek and Elkhorn Rapids provide exciting challenges for paddlers.
There are specific regulations to be aware of in this area. All paddlers must wear a personal flotation device (PFD) and a helmet. The use of alcohol is strictly prohibited, and all waste must be packed out. Campfires are only allowed in designated areas, and visitors must obtain a permit before camping.
In conclusion, the whitewater river run from Outlet Alteras Lake to Confluence with Salmon River in Idaho provides an exhilarating experience for intermediate to advanced paddlers. With a range of class III-IV rapids and specific regulations to adhere to, this section of the river offers a challenging and exciting adventure for those who choose to tackle it.
River Run Details
| Last Updated | 2025-12-15 |
| River Levels | 595 cfs (2.09 ft) |
| Percent of Normal | 94% |
| Status | |
| Class Level | iii-iv |
| Elevation | ft |
| Streamflow Discharge | cfs |
| Gauge Height | ft |
| Reporting Streamgage | USGS 13295000 |
Weather Forecast
Nearby Streamflow Levels
Area Campgrounds
| Location | Reservations | Toilets |
|---|---|---|
Pettit Lake Campground
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Pettit Lake
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Alturas Tent Camping Area
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Smokey Bear
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Smokey Bear (Alturas) Campground
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Smokey Bear Campground
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Outlet Alteras Lake To Confluence With Salmon River
Headwaters To Confluence With Alturas Lake Creek
Outlet Pettit Lake To Confluence With Alturas Lake Creek
Sawtooth Wilderness Boundary To Confluence With Salmon River
Headwaters To Inlet Pettit Lake
Headwaters To Sawtooth Wilderness Boundary
Perkins Lake
Alturas Lake and Pettit Lake Areas
Redfish Lake