Try casting a streamer pattern inches from the opposite bank, wait 3-4 seconds and then begin stripping in short quick strips. PMD's have had a fair showing but are pretty much done for the summer. BWO's are the main player right now with a lot of active nymphs at about a size 18-20. The hatches in the fall tend to be smaller than in the spring. An olive RS2 can be a deadly pattern this time of year.
Midges are always in the water.
Try a midge larva in about a size 20-22 olive or black. Zebra midges work very well this time of year in a size 20-22. Caddis have made a descent showing in the evenings and into dark. If caddis are hatching and fish are slashing on the surface, throw a sparkle caddis pupa as dropper or put it deep. Terrestrials are also producing in the afternoon using small ants, hoppers, and beetles.