Started prospecting 30 years ago after seeing a guy panning on Piru creek above pyramid lake. He had good fines from panning. Look on the map for "gold creek road" in the Hungry Valley ORV area out of Gorman. DIG YOUR DIRT FROM AROUND THE BOULDERS AT WATER LEVEL. If it's hard to get material from around the boulders, thats the stuff to pan, stay away from the sandy, easy to dig stuff. There is alot of gold mining history in this area. The bedrock is cemented gravels that you can't dig, gold will collect on this false bedrock.
Again, dig around the boulders, there are fines and large flecks, I have found nuggets back in the day when it was open to dredging.
enjoy