You'll see a lot of amateurs up in the canyons. But at this spillway site, forget it. Gold has a specific gravity of 19, common rock like these photos is around 3. With all the churning here the gold will all be on the bottom, it always is. A few nuggets might be found in those exposed crevices (if you can get permission to get in there) but it wouldn't be economically rational to process all that waste material to extract gold.
When gold first shot up to $300/oz (1980?) our mining claim got overrun with yahoos, who even stole all our hidden camping gear. I think many were recently released ex-cons who had heard the wild legends. At the end of summer those guys were still starving, none had made wages.
Each time there is a gullywasher winter a new crop of yahoos arrives, a few of them find gold, most just find a little color.
These nuggets were shown to me by someone we hadn't seen for years, the long-lost owner of a nearby claim who stumbled into our camp at dinnertime and subtly asked us 9 different ways where the upper boundary of our claim was. I'm pretty sure he found them within our claim and he didn't own the stretch of creek upstream from it where they might have been. He had extraordinary luck for a weekend's fooling around using a metal detector, I think on the gravel benches well above the creek level. I wish we could do this well.
I finally formally abandoned the claim when the BLM's annual fees went from under $50/year to over $500 and also Fish & Game outlawed use of an engine-powered suction dredge in the trout streams. That was the end of an era, I don't think any hobby mining is a reasonable thing to do now.
