Middle Deschutes- From Lake Billy Chinook all the way up to Bend there are Salmonflies. They just started in the upper ranges but have been out over a week in the lower ranges. Mixed reports of fish grabbing them, but it will happen. This is how salmonfly hatches work…It takes the right combo of the fish being ready for them, the bugs taking flight, pleasant weather and if you wore your lucky underwear. 
PMD, PED, Caddis are all over the river too. 
We’ve also been having really good Euro Nymphing through the Middle River lately.