The Middle Deschutes is good from Bend to Lake Billy Chinook. PMD, PED, Caddis will be the main hatches now throughout the Summer. Look for areas of Blue Wing Olives too. I can relate several stories of overlooking the baetis while thinking of Pale Evening Duns, but by putting my nose close to the water and realizing there were tiny olive mayflies in the drift and soft eaters in the seams. So many of us think BWO is a Fall, Winter and Spring hatch, and we forget them in the Summer, but with at least 6 different species of Blue Wing Olives from the Baetis and Diphetor genera, these little gifts keep on giving. 
There is a exceptional amount of nymphing water and opportunity anytime of the day on the Middle river.