Description
Heads on the southwest slope of Pilot Peak in sec 9, T22N, R10E, Mount Diablo Meridian and flows southwest 10.6 km (6.6 mi) through Little Grass Valley Reservoir, then continues west to enter Ponderosa Reservoir. The mouth was formerly located further west at 393305N1212520W but is now inundated by Lake Oroville. (US-T121)