The Crooked River is fishing quite well, and should be a great and consistent choice for fishing this week. The main hatches are midges, PMD’s and tan caddis, and add a few attractor style dries and grasshoppers to the fly box.
Much of the day will be spent with a nymph set up, and you can choose between a Mono-rig, Indicator (I recommend the NZ Wool or the XS Oros) or a Dry Dropper. 
Pearl, Olive and Brown Perdigons with an orange hot spot, Brown Micro May with a tungsten bead, Black Zebra Midges, 2 Bit Hookers to imitate BWO and PMD nymphs and Scuds. 
In addition to this check out this report Drew sent to me after last weekend:
Had a great time on the Crooked teaching my niece’s husband how to fly fish. No issues following the shock count on Friday. Landed dozens including some beautiful 16” plus rainbows. They were eating tiny emergers in the evening so a bead head pheasant tail did most of the heavy lifting. Also landed over a dozen on yellow and olive soft hackles, both swung and tied as a tandem dry set up. Purple Haze and Eggs were also hot flies.