* 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
The ideal streamflow range for this river is between 600 and 1,500 cubic feet per second (cfs), with peak flows occurring in May and June. The river is rated as Class III-IV, with some Class V rapids during peak flows. The river run is approximately 13 miles long, with the most challenging rapids occurring in the first five miles.
The Mokelumne River features several notable rapids, including Satan's Cesspool, which is a technical Class IV rapid with a steep drop and a tight chute. There is also The Chute, a Class III+ rapid with a narrow channel and large boulders, and Bitch Slap, a Class IV rapid with a steep drop and a large hydraulic.
There are specific regulations to the area, including a requirement for a permit to access the river. The Mokelumne River is managed by the East Bay Municipal Utility District, and permits can be obtained through their website or by calling their office. Additionally, all boaters are required to wear personal flotation devices (PFDs) while on the river.
Overall, the Mokelumne River provides a challenging and exciting whitewater river run for experienced boaters. It is important to check streamflow levels before attempting this run, as flows outside of the ideal range can make it much more dangerous.
| Last Updated | 2025-06-28 |
| River Levels | 532 cfs (4.41 ft) |
| Percent of Normal | 49% |
| Status | |
| Class Level | iii-iv |
| Elevation | ft |
| Streamflow Discharge | cfs |
| Gauge Height | ft |
| Reporting Streamgage | USGS 11335000 |
Cosumnes R A Michigan Bar Ca
|
163cfs |
Black C Nr Copperopolis Ca
|
1cfs |
Deer C Nr Cameron Park Ca
|
8cfs |
American R A Fair Oaks Ca
|
12500cfs |
Laguna C Nr Elk Grove Ca
|
1cfs |
Pilot C Ab Stumpy Meadows Res Ca
|
3cfs |
| Location | Reservations | Toilets |
|---|---|---|
Indian Grinding Rock State Park
|
||
Indian Grinding Rock Campground
|
||
Gold Strike Village Campers
|
||
Oak Knoll - New Hogan Lake
|