I have only ever seen small bluegill, but there might be a couple small trout or bass.
No lake just creek, the fish wouldnt stay there, but it's a nice park. The little lake at Nevada county fairgrounds does get stocked but I don't know when
I don't think they stock fish, I'm pretty sure the creek is squirrelly creek, there's a nice swimming area for kids by the the playground and gold panning pans and hands theres fish in there naturally though
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