An Atmospheric River Event will bring moderate to heavy rain this evening through Monday evening. The prolonged period of rain will bring the risk of flooding to the Sacramento Valley, Shasta County, northern Sierra Nevada and adjacent foothills, as well as the Coastal Range. This will be for elevations below 4000 feet. * WHAT...Flooding caused by excessive rainfall is possible. * WHERE...A portion of northern California below 4000 feet in elevation, including the following areas, Sacramento Valley, Motherlode, Mountains Southwestern Shasta County to Western Colusa County, Northeast Foothills, and Shasta Lake Area / Northern Shasta County. * WHEN...From this evening through Monday 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... - http://www.weather.gov/safety/flood
The river features several obstacles, including boulders and rapids, making it best suited for intermediate and advanced paddlers. The best time of year to float this section of water is in the spring, when the water levels are high, with a recommended flow of 500-1000 cfs. Paddlers should use caution when navigating the river, as there are several sections with strong currents and potential hazards. Overall, the Yankee Jim Road to Ponderosa Way Shirttail River Run offers an exciting and challenging adventure for experienced paddlers.
| Last Updated | 2023-06-13 |
| River Levels | 1390 cfs (1.86 ft) |
| Percent of Normal | 200% |
| Optimal Range | 500-5000 cfs |
| Status | Runnable |
| Class Level | II to III |
| Elevation | 717 ft |
| Run Length | 5.0 Mi |
| Gradient | 21 FPM |
| Streamflow Discharge | 4390 cfs |
| Gauge Height | 3.6 ft |
| Reporting Streamgage | USGS 11427000 |