ISLAND PARK DAM TO BOX CANYON SUMMER HOMES

RIVER RUNS
2024-12-25
6,229 ft 44.38, -111.41

Winter Storm Warning
2024-12-27T17:00:00-07:00

* WHAT...Heavy snow expected. Total snow accumulations between 4 and 19 inches. In the central Idaho mountains, including the towns of Stanley, Ketchum, and Hailey, amounts will range from 5 inches at the lowest elevation to more than 24 inches on the very highest peaks. For the areas bordering Utah, expect 1 inch at the lowest elevations to more than 20 on the highest peaks in that area. In the eastern and southeastern highlands, snowfall will range from 3 inches at lowest elevation to more than 20 inches in passes heading to Wyoming. * WHERE...Big Lost Highlands/Copper Basin, Sawtooth/Stanley Basin, Sun Valley Region, Wood River Foothills, Big Hole Mountains, Centennial Mountains - Island Park, Teton Valley, Bear River Range, Blackfoot Mountains, Caribou Range, Franklin/Eastern Oneida Region, Marsh and Arbon Highlands, Raft River Region, and Southern Hills/Albion Mountains. * WHEN...From 5 AM Thursday to 5 PM MST Friday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Travel could be very difficult to impossible. The hazardous conditions could impact the Thursday morning and evening commutes.


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The Whitewater River Run from Island Park Dam to Box Canyon Summer Homes in Idaho is a popular spot for whitewater enthusiasts. The ideal streamflow range for this section is between 1,000 and 5,000 cubic feet per second (cfs), which typically occurs during the peak snowmelt season in late May and early June. The run is classified as a Class III-IV, meaning it has moderate to difficult rapids and obstacles that require technical skill and experience to navigate safely. The segment covers a distance of approximately 8 miles, with notable rapids such as Big Kahuna, Devil's Cesspool, and Lunch Counter.

There are specific regulations for this area, including a permit requirement for commercial outfitters and a limit on the number of launches per day. Private boaters are also required to register with the local forest service office and follow Leave No Trace principles. Safety equipment such as helmets and life jackets are mandatory, and boaters should be aware of the swift currents, cold water temperatures, and potential hazards such as strainers and undercut rocks. It is recommended that boaters have previous experience and knowledge of whitewater techniques before attempting this run. Sources for this information include the American Whitewater website and the local forest service office.

Last Updated 2024-12-25
River Levels 718 cfs (3.34 ft)
Percent of Normal 72%
Status
Class Level iii-iv
Elevation ft
Streamflow Discharge cfs
Gauge Height ft
Reporting Streamgage USGS 13042500
       

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