Fly fishing for Shad on the Lower Yuba River is the best.
In Northern California the lower Yuba river, below Daguerre Dam, is some of the best Shad fishing we have.
The water is usually very clear and it is a small river, like a trout stream.
Most go with guides in jet boats or in their own jet boats.
Access on that river below the dam is not common.
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Here is some video that might give you the feel for it's beauty
https://www.youtube.com/watch?v=T_uG6uhJnFk
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