Low water and spooky fish are making the upper Henry’s Fork a challenge, but with some patience, some quality fish are being landed. Box Canyon has started to produce some great fishing. Small mayfly nymphs and zebra midges are the best-producing patterns currently. Fish these under a small indicator or your favorite hopper pattern to detect subtle strikes. If your day on the water includes a cloudy sky, consider fishing a streamer dragged around boulders or fished deep with a dead drift. Conehead wool sculpin or a Fish Flash Minnow are some favorites. 

The ranch seems to be having on-and-off days. When the wind stays down, I have seen some of the larger rainbows rising to mahogany duns. Try fishing an emerger pattern in the midmorning and afternoon, and spinners in the evenings. Larger rainbows in the state park are sometimes right against the bank; tread carefully and stand back from walking just along the waterside. As of the first of the month, there are still numerous grasshoppers available in this section as well. If the mayflies don’t get the fish on the surface, consider hanging a small mayfly nymph 12 inches underneath a small hopper and fishing the steeper banks. I had some luck doing this with the tungsten twisted tactical mayfly nymph.