Crane Prairie is seeing a nice callibaetis hatch in the Cultus and Deschutes areas. Great news. Emerging flies like the Almost Dun and the Last Chance Cripple have been good this week. 
Balanced leeches, Chironomids, Damsel nymphs are top choices and be prepared for fishing both under an indicator and with a Hover or Camo Intermediate line in different areas of the lake.