BWOs continue to provide action throughout the river. During bright days, late afternoons and evenings are best times to experience them, but when cloudy weather prevails BWOs will be out all day, so be sure to have BWO life cycle patterns in your fly box. Box Canyon provides the best nymphing on the river. Use big stonefly nymphs with a bead head copper john or other such pattern. Streamer patterns are now very important for fishing success, particularly on the lower river. Specific pattern is not as important, except that one should have some in light colors and some in dark colors. Concentrate fishing streamers on low light areas where ever you are on the river.