As is usual, fishing on the the lower river is slowing down. Mayfly emergences are winding down, big stoneflies are all but gone, and the river lowering to base levels. Grasshoppers will be coming on soon, and fish will respond to their patterns early and later in the day when waters are a bit cooler and there is more overhead cover. One constant is that streamer patterns presented in the evening twilight can still fool that big fish. Just be patient, and use some strategy. Fish shaded banks and undercuts, fish around overhangs and sweepers. Look for schools of minnows in shallow water.