The Headwaters stretch of the Upper Deschutes is a good bet, especially with Perdigons, Jigs and Jig Streamers. Mostly Brook Trout and Whitefish and some Rainbows mixed in. Ants and Beetles and some Hopper action along with Caddis and PMD’s and BWO’s and be sure to look for Mahogany Duns now too. 
The Blue Hole is a cool spot below Little Lava Lake that you can hike in with a Float Tube and circle around. Possible to see some Callibaetis there, but I love a Red Ice Cream Cone, Red Copper John, Egg and Olive Soccer Mom under an indicator through there. All of this closes September 30th and the next month is the time to hit it.