Henry's Fork

An aquatic insect hatch timing report is posted on Henry’s Fork Foundation’s web site.  How much ahead in time the hatches will occur depends on location on the river. Fishing between Ashton and Chester Dams is very good with BWO and March brown mayflies, caddisflies, and midges providing responses from trout throughout the water column. Streamer patterns are most effective during low-light and stormy periods. Flow below Ashton Dam is about 1100 cfs and about the same at St. Anthony.  Fall River’s flow into the Henry’ Fork is less because of upstream irrigation diversions. There are also plenty of wading and boating anglers present from Ora Bridge to Chester Dam. If you want to enjoy trout responding to these hatches around Last Chance, consider checking on road conditions on Highway 20 north of Ashton.