Gold Rush Alaska

Probably the same here. Salmon numbers have declined pretty bad.
However all the rivers are damed for the Lakes. All the gold is up river.
I am quite sure the Dam's are hurting the Salmon population more than the few dredgers?

Good question! Maybe someone here will chime in with an answer?

I played around a little bit in the rivers here in Colorado and didn't even find a flake. :-D