East Lake is still rocking. Might it be the best lake to fish right now? Probably. Callibaetis are waning, but this week should see the last of the best hatches of 2021. Beetles, Ants and Hoppers for the rest of September for sure. I can remember one hell of a great day guiding in October with beetles and even a day with snow falling and the fish still ate the beetles.
Chironomids are good in a 10 to 18 feet of water. Black #16, Red from #12 to #18, Olive #16-18, Chrome #16. Play around with the colors at different depths and times of day and different areas of the lake.
One thing about nymphs, you will end up catching chubs. Bonk them and feed them to the Gulls. ODFW wants them out and the only good chub is a dead chub on the lakes.