The Lower Deschutes from Warm Springs to Trout Creek is in full swing on the 2 big bugs! Salmonflies and Golden Stones abound. 

You should be able to spend the majority of your fishing time with Chubbies, Norm Woods, Clark’s and other big flies for the next 7 to 10 days here. 

Smaller Yellow Sally’s can be a difference maker when the fish get pounded with big flies for 3 weeks day after day. Also, a Clark’s Stone with the hackle trimmed flat on the bottom makes a low riding profile and can be good with egg laying Golden Stones on the water. 
Pale Morning Duns and Pale Evening Duns, Rusty Spinners and a whole bunch of caddis hatches are important now and become even more important as soon as this stonefly hatch is done in a couple of weeks. 

Honestly, my favorite Lower D hatches are the summer hatches of smaller mayflies and caddis. I love being down there with a Purple Haze, Fin Fetcher Caddis, Iris, X Caddis, Yellow Sparkle Dun and Rusty Spinners and enjoy that summertime small dry game a ton!