I have been surveying the bugs around #3 and there are tons of Baetis hatching and tons of Baetis nymphs in the riffles. These little green guys look exactly like a size 18 or 20 olive WD-40 or a pheasant tail with some olive dubbing. I've been using these flies almost exclusively and I just change my depth throughout the day to get to the fish. The water is fast and shallow at #3, so I suggest using short leaders with more weight. With the scouring I have a feeling Putah will become more of a mayfly creek and less of a midge one. 

I was under the impression that the midges are so prevalent because of the water from Berryessa.  Aside from the Glory Hole, it all comes from the bottom of the lake.  Is this incorrect?  It would be cool to see some more surface action, though, that's for sure.

I think Yubadood is correct about turning more into a mayfly and less midge water. over the last 30 years I've seen many cycles of changes at putah and one of those is the less mud and silt , the less beatis mayfly which is the dominant mayfly on the creek and always has been. As far as " surface action is concerned I don't hold much hope for dry fly heaven , cause in all my years fishing the creek, rising and surface feeding fish are definately not the norm. So in closing I'm guessing that with this scouring of this winter I anticipate the bwo's to start making a strong comeback.