A little history on that section of SF Yuba river. When I first started mining, the rumor was that SF had only small, flood gold. But over the years I found out differently. There was, in the town of Washington, three "steve"s - little steve, big steve, and "teepee steve". They all were professional miners w/claims on the Yuba, and all were very successful. If you go to the general store, just to the left is a house with bars and security door - that's big steves house - wonder why he has bars on the windows ? - you guessed it. These guys made money, and raised families on their gold operations (think Hoser John). As well as the general store was purchased at one time with gold from claims on Poorman's creek. Farther downstream, a Texas millionaire, ran a 10"inch dredge ops. that included daily helicopter flights to shuttle his dredge crew back at forth. He is now in Virginia City, Nv and owns the Marshall Mint there. He has nuggets on display from all over the world, including some beauties from SF Yuba. So, if you think only "recreational gold" is out there, you would be dead wrong !