The Metolius River is really doing well again. The July dry fly doldrums are in the rearview, and the August trend is typically like this as we march to the some of the best weeks of the year, which I think are Mid August to Mid October (and Early May to the end of June). All the hatches are off to the races now and over the next 8 weeks you can count on some of the best dry fly action of the year. 
So what is happening? More consistent PMD’s, more and more BWO’s, the Micro Caddis in the evening, a mid size Olive Mayfly called an Ameletus (#14 Olive Haze and Flav patterns work for this), (ps- Flavs are about 3 weeks away), Tan Caddis #16, Grey Caddis #14-16, Olive Caddis #16-18, Little Olive Stone #16-18, Yellow Sally #16, Golden Stones #10 (these are spreading around more than the Upper River and look for isolated areas in the Canyon and below Bridge 99. Why isolated? Because in the Metolius the springs create pockets of cold water some of our insects don’t inhabit, which is why we don’t see Green Drakes above the Gorge and why there are less areas below the Gorge with consistent Golden Stone hatches. 
The #1 Dry Fly Tip I can offer is get a great drift. Learn the Reach Mend and a Soft Parachute Cast. No how to feed line into the drift with out dragging the fly out of the seam it needs to be drifting in. If you can master that you will be a great dry fly angler anywhere, and if you can be a good dry fly angler on the Metolius, you can be great anywhere else. 
Euro Nymphing this week will pay off on any stretch of the river so don’t forget your 10 or 10 1/2′ 3 weight and your mono rig. Have you tried the Ultra Light Mono Rig I talked about last month? It’s amazing right? More sensitive and more fun to use one fly and less hassle too. Jig Napoleon, Lightning Bug, Olive, Purple, Brown and Green Perdigons, Jig 20 Incher, Jig Green Drake, Caddis Pupa Tan #16, Grey #18 and TB Hookers or Micro May’s to be more specific than a Perdigon for matching a mayfly pre-hatch. 
Yes the Lake Billy Chinook Bulls are up in the river to spawn soon, but it is important to know that there are always Bull Trout in the Metolius. 24/7 all year the resident fish are there. So it is not just about coming to fish a run that is short in duration. Come any time. 
The fish have been excited to eat bigger streamers. Match your fly size with the rod size. Some of the streamers are way too big and heavy for a 6 weight, and if a 6 is all you have a smaller Circus Peanut, Jigs under an indicator and the Milkshake (remember it brings all the Bulls to the yard) will be appropriate. If you have an 8 weight you can suck some meat and that pays off for the lake run fish.