I've seen jet skis and motorboats there, but the two put ins are marginally suitable for a trailer launch, best for kayaks and canoes and other hand launch craft. Says Stan
Are jet ski's allowed on slab creek? Says Zack Heriman
This lake is one of the great places here in the Northern Sierra Nevada. On American River - South Fork you discover the close by Slab Creek Dam to White Rock Powerhouse sector. This is a class IV-V, 7-mile-long stretch of whitewater.
In the event that you are a beginner, you should probably search for a different stretch of whitewater to raft than this stretch of American River - South Fork.