2026-04-26T08:00:00-06:00
* WHAT...Temperatures as low as 23 in populated areas will result in frost formation. There is a 30 percent chance for a hard freeze. * WHERE...Western Lemhi County. * WHEN...From midnight tonight to 8 AM MDT Sunday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation. Possible damage to unprotected outdoor plumbing and irrigation systems with the hard freeze(temperatures in the lower 20s). * ADDITIONAL DETAILS...Additional frosts or freezes are possible through Wednesday.
Summary
This section of water offers exciting rapids and challenges, including the notorious Elk Horn Rapid, and is considered a Class III-IV run. The best time to float this section is during the summer months when water levels are high, typically between 4,000-15,000 cfs. River guides must navigate around obstacles such as large rocks and boulders, steep drops, and strong currents. Overall, this is a thrilling and scenic river run for those seeking a challenging adventure.
Regional Streamflow Levels
15-Day Long Term Forecast
River Run Details
| Last Updated | 2023-06-13 |
| River Levels | 1560 cfs (31.84 ft) |
| Percent of Normal | 89% |
| Optimal Range | 4000-35000 cfs |
| Status | Runnable |
| Class Level | III to IV |
| Elevation | 3,017 ft |
| Run Length | 79.0 Mi |
| Streamflow Discharge | 5790 cfs |
| Gauge Height | 35.6 ft |
| Reporting Streamgage | USGS 13310199 |
Corn Creek Boat Ramp & Campground
Corn Creek /Boat Ramp
Hand Spring Beach Campsite
Horse Creek Campsite
Bridge Campsite
Upper Legend Creek Campsite
Corn Creek to Vinegar Creek/Carey Creek (Main Salmon)
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