2026-01-05T16:00:00-08:00
* WHAT...Moderate to heavy snow. Additional snow accumulations of 4 to 8 inches south of Interstate 80. For areas north of Interstate 80, 2 to 6 inches above 4500 feet, 8 to 24 inches above 5000 feet, and 1 to 3 feet above 6000 feet. Southwest wind gusts of up to 40 mph. * WHERE...West Slope Northern Sierra Nevada and Western Plumas County/Lassen Park above 5000 feet. * WHEN...Until 4 PM PST Monday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Monday morning commute. * ADDITIONAL DETAILS...Snow levels around 4500 to 5500 feet on Monday. Heaviest snowfall expected north of Interstate 80.
Summary
This section features a number of challenging rapids, including the infamous "Tunnel Chute" and "Chamberlin Falls." It is best to float this section in the spring months, when the snowmelt provides enough water flow to make the rapids more manageable. The recommended flow for this section is between 1,000 and 2,000 cfs. It is important for rafters and kayakers to be experienced and skilled in navigating Class III-IV rapids, as the Tunnel Run section can be dangerous for beginners.
River Run Details
| Last Updated | 2023-06-13 |
| River Levels | 1390 cfs (1.86 ft) |
| Percent of Normal | 200% |
| Optimal Range | 700-3000 cfs |
| Status | Too High |
| Class Level | IV- to IV |
| Elevation | 717 ft |
| Run Length | 16.5 Mi |
| Gradient | 23 FPM |
| Streamflow Discharge | 5230 cfs |
| Gauge Height | 3.9 ft |
| Reporting Streamgage | USGS 11427000 |
Weather Forecast
Nearby Streamflow Levels
Area Campgrounds
| Location | Reservations | Toilets |
|---|---|---|
Dru Barner Campground
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Dru Barner
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Chicken Hawk Campground
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Georgetown Airport Campground
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Forbes Group Campground
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Giant Gap
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Tunnel Run (Ralston Powerhouse to Greenwood)
Big Grizzly Canyon To Oxbow Reservoir
Interbay to Oxbow (End of the World)
Yankee Jim Road to Ponderosa Way (Shirttail)
Greenwood to Mammoth Bar
Chamberlain Falls (Iowa Hill to Yankee Jim)