No killing frosts yet, even on the upper river. So terrestrial insects remain plentiful. The Riverside-Hatchery Ford area is a great place to try your skill with terrestrial insect patterns. Flows along the river are below normal. With respect to mayflies, tricos still emerge during mornings on the upper river. BWOs emerge almost everywhere on the river, but overcast or stormy days would bring them on in bigger numbers. Some mahogany duns are hatching. Nymph fishing remains effective in Box Canyon, but look for more responses to streamers everywhere along the river as we advance through October.