The Upper D (Bend upstream to Little Lava Lake) is a great small stream experience, especially above Crane Prairie Reservoir (watch your step, there are alot of spawning beds). Rainbows, Browns, and Brookies in the 8-12" range will eagerly take fluffy attractor patterns.  Stripping small wooly buggers under cut banks and deep holes may fool some of the big Bookies.  Perfect 0-2 # water and beautiful high country scenery. 

Dries: Humpies, Coachman, Caddis, Adams, Green, yellow, or orange stimulators, mosquitos