I say "it depends" too Stone. The higher flows that Fluff said are definitely ideal... but higher water tends to make the hatchery fish shoot right up to the terminal zones. If you like to flyfish for winters... I'd say 5' or approx 3000 cfs is probably ideal. There's some weeping clay just above Gold Bar that's gonna be causin' some vis problems everytime we get a good rain now I fear.