I guided father/son team Harry and Ben today on the Lower Sac.  We fished up in Redding.  The river dropped 500cfs last night to 10,500cfs, but it didn't seem to affect the fishing.  We had a pretty good nymph grab throughout the day, especially around 2pm.  We caught fish on birds nests, poopahs, and S&M nymphs.  The big caddisflies are just getting started in the afternoons.  We saw plenty of fish rise.  Ben landed a small fish on a dry and hooked a big one that got away.  The afternoon dry fly fishing will only improve as the flows drop.  If you're looking for a big fish on a dry fly, the Lower Sac is the place to be starting now and going through December.