A good place to start is, http://www.dfw.state.or.us/resources...in_90_bend.asp

Bend Fly Shops;

http://www.patientangler.com/
http://confluenceflyshop.com/
http://flyandfield.com/

In Sisters, https://flyfishersplace.com/

In Redmond, http://www.finandfire.com/

There are also a couple good fly shops in Sun River, The Sunriver Fly Shop and The Hook.

Any of them will be happy to point you toward good fishing.

Cliff