Time to consider terrestrial patterns for best chances of success on the upper river. Flavs are well past their peak, and PMDs are smaller and less numerous. Evenings and late afternoons continue to bring activity because of caddis swarms and mornings bring activity from spinner falls. If you enjoy evening action from caddis swarms but want a bit more solitude, try the lower Coffeepot reach. Flow out of Henry’s Lake remains at 100 cfs, so fishing on the river in the Flat Ranch Preserve will hold up until flows drop when water storage begins on the lake. Look for evening caddis swarms, and PMDs emerging during late morning. But again, expect to have best success through presenting terrestrial patterns.