2025-12-26T16:00:00-08:00
* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...A portion of northern California, including the following areas, the Sacramento Valley, northern San Joaquin Valley, Delta region, Sierra Nevada and adjacent foothills, and Coastal Range. * WHEN...Through Friday afternoon. * IMPACTS...Excessive runoff will result in rises along area rivers, creeks, streams. Small streams and creeks may rise out of their banks. Flooding may occur in low-lying, poor drainage, and urban areas. Mudslides and rockslides may occur in mountain and foothill areas. * ADDITIONAL DETAILS... - Periods of moderate to heavy rain are forecast the week of Christmas. Debris flows are not expected over recent burn scars in northern California, but do anticipate enhanced runoff in/below scars. - http://www.weather.gov/safety/flood
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 | Runnable |
| Class Level | IV- to IV |
| Elevation | 717 ft |
| Run Length | 16.5 Mi |
| Gradient | 23 FPM |
| Streamflow Discharge | 2360 cfs |
| Gauge Height | 2.6 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)