Shell Rock Creek is a popular whitewater river run located in the state of California. The ideal streamflow range for this river run is between 200 to 600 cubic feet per second (cfs). This streamflow range provides Class III and IV rapids, making it a suitable adventure for intermediate to advanced level paddlers. The segment mileage of this river run is approximately 4 miles.

The river consists of several unique rapids, including S-Turn, Rock Garden, and Roller Coaster. The S-Turn is a Class III rapid with a series of quick turns that can challenge even the most experienced kayakers. Rock Garden is another Class III rapid that features a boulder garden and tight channels. Roller Coaster is a Class IV rapid, which includes steep drops and turbulent flows.

Visitors to Shell Rock Creek must adhere to specific regulations. For instance, visitors are required to obtain a permit from the Bureau of Land Management (BLM) to access the river. Additionally, visitors must comply with the Leave No Trace policy and pack out any trash. The use of glass containers is also prohibited.

In summary, Shell Rock Creek is a thrilling river run in California that offers Class III and IV rapids. The ideal streamflow range for this river is between 200 to 600 cfs, and the segment mileage is approximately 4 miles. Visitors must comply with specific regulations, such as obtaining a permit from the BLM and packing out all trash.