The nymph grab continues to be excellent on the Lower Sac.  I guided longtime fishing buddies Bob and Michael today.  We had action from the beginning of the day to the last cast.  Bob landed a couple of 19-21" rainbows.  The average size of the fish is really good right now.  There are tons of 16-18" fish in the mix.  The fish ate a lot of different flies today, but the small brown mayfly nymphs were the best for us.