2026-04-17T06:00:00-06:00
* WHAT...Snow expected above 6500 feet elevation. Total snow accumulations between 6 and 11 inches. Snow below 6500 feet elevation will accumulate 1 to 6 inches. Winds gusting as high as 45 mph. * WHERE...Centennial Mountains - Island Park, and the Bear River Range. * WHEN...From 6 PM Wednesday to 6 AM MDT Friday. * IMPACTS...Plan on slippery road conditions. Most affected will be mountain passes heading into Montana in the eastern highlands or through Emigrant Gap in southeast Idaho. Gusty winds could bring down tree branches.
Summary
The river run is best tackled in late spring or early summer when water levels are at their highest, with a recommended flow of 1,000-2,000 cfs. Obstacles to be aware of include the "Notch" rapid, a narrow chute with a large boulder in the middle, as well as "Pinball," a series of technical rapids with multiple boulders and tight turns. Overall, the Box Canyon river run is recommended for experienced rafters and kayakers looking for a thrilling adventure.
Regional Streamflow Levels
15-Day Long Term Forecast
River Run Details
| Last Updated | 2023-06-13 |
| River Levels | 267 cfs (2.55 ft) |
| Percent of Normal | 87% |
| Optimal Range | 600-2200 cfs |
| Status | Too Low |
| Class Level | II |
| Elevation | 6,229 ft |
| Run Length | 4.0 Mi |
| Gradient | 18 FPM |
| Streamflow Discharge | 211 cfs |
| Gauge Height | 2.4 ft |
| Reporting Streamgage | USGS 13042500 |
5-Day Hourly Forecast Detail
Area Campgrounds
| Location | Reservations | Toilets |
|---|---|---|
Box Canyon Campground
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Buffalo Campground
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Buttermilk
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Buttermilk Campground
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McCrea Bridge
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Box Canyon
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Island Park Boating Site
Box Canyon
Elk Creek To Slackwater Of Ponds Power Dam
Island Park Dam To Box Canyon Summer Homes
Buffalo River Springs To Confluence With Elk Creek
Coffee Pot Campground To Mccrea'S Bridge
Box Canyon Summer Homes To Northern Boundary Of Harriman Park
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