The Crooked River is outstanding from the Dam down to about Mile Post 15, although it’s good from 12 to 15 too, and probably less people fishing the lower down you go. 
Our guides have had great success on perdigons, especially a Rainbow Warrior Perdi, and a Fire Starter and a Brown Jig Napoleon have been amazing. 
Scuds, Zebra Midges, Winkers, 2 Bit Hookers, PT’s and Psycho Prince are all good ones to use as a dry/dropper rig or under the indicator. 
We are seeing Caddis and PMD’s and Midge hatches that create dry fly opportunities and some Rusty Spinners at dusk for those of you camping or the few who do a late trip and stay until dusk. It’s weird to me that the Crooked River crowd seems to all leave by 4.