South Fork & Henry's Fork Fishing Reports

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Henry’s Fork

Jimmy's All Seasons Angler / Henry’s Fork (Page 4)

Henry’s Fork, June 9th, 2020

Fun Farm Bridge (1024x768)

Golden stoneflies are coming out on the Warm River to Ashton section of the river, and some giant stoneflies remain.  Goldens will now work their way up the river and such as Box Canyon will be the next host.  The next big activity, soon to happen on the lower river, is that from green drakes. That activity, too, will come to certain sections of the upper river.  We are all hoping for a return of gray drakes in past intensities around the middle of this month on the lower river.  All these happenings and more to come are the reasons why this great and unique river attracts crowds of enthusiasts whether boating or wading.  Certainly the crowds can test one’s patience, but tolerance can come based on the fact that few of those present are lucky enough to have such a treasure on their doorstep as do we in east Idaho.


Henry’s Fork, June 6th, 2020

The big bugs are in Box Canyon, and fish are looking for them.  This makes the choice of flies obvious: big floating patterns. The word is out, so look for a lot of boating and wading anglers there.  The green drakes should appear in numbers to attract fish on the lower river any day now.  This will help spread out fly-fishing interest on the river.


Henry’s Fork, June 2nd, 2020

Most boat traffic now is on the Warm River to Ashton section of the river. But the most fish responding to the stone fly hatch is from Riverside Campground down to Bear Gulch with activity in Box Canyon coming on.  Look for boat traffic on these sections to be on the increase.   Give the lower river some more days before fish there begin looking for stoneflies again after digesting those from the early days of the hatch.  Fall River is putting in much run-off water. This will impact fishing below Chester Dam in the negative.


Henry’s Fork, May 30th, 2020

The big stonefly hatch peak has passed the  river below Ashton Dam.  These bugs are just beginning to fly in number in the Hatchery Ford area. So the event is on its way to Box Canyon and beyond.  For the river below Ashton Dam wait a matter of days and depending on weather and water temperature, fish will have digested their bugs and be looking for more until the next big hatch ( green or gray drakes?) comes along.


Henry’s Fork May 28th, 2020

Not much has changed recently on the Henry’s Fork, its still salmonfly time. Dry fly fishing has been best early and later in the day and the nymph fishing along the banks continues to be excellent. The bugs have spread out through the system a little more than this time last week so I wouldn’t be too worried about hitting a particular stretch. Make sure you have a few different profiles if you are set on fishing dries, and don’t limit yourself to big hair wing styles. Some of the smaller chernobyl type patterns can be killer during this hatch. There are still a few caddis around as well so make sure you have some on you just in case they are in one of those moods where they’d rather eat a size 16 over a size 4.


Henry’s Fork, May 23rd, 2020

The big stoneflies are coming out on the lower river. But you can bet those big bugs are hunkering low today!  Just getting to the river now could be  a bit tough with this late season snow storm.  But when the warm-up predicted in a few days kicks in, the top water fun will begin. For now, drive safely.


Henry’s Fork, May 16th, 2020

Few fly-fishing world happenings are anticipated as much as are the giant and golden stonefly emergences on regional rivers. With respect to the Henry’s Fork, nymphs of these species are moving toward banks along the lower river thus making patterns imitating these currently very effective (don’t overlook pitching a streamer).  It will be a matter of several days before these bugs will be flying, but look for the first to appear in numbers significant to attract trout attention in the Ashton through Bear Gulch reach of the river. Soon to follow will be the same activity happening from the river below Ashton Dam.  So if you  intend to be at the fly tying bench, tying nymph and dry patterns for giant and golden stoneflies will be time well spent!


Henry’s Fork, May 9th, 2020

Fall River currently is running somewhat high but clear. This means the Henry’s Fork below Chester Dam still hosts good fishing.   The Island Park countryside is quickly becoming free of snow, and the Mesa Falls Highway is totally passable.  Many side roads are not yet free of snow.  The Henry’s Fork at Last Chance features midge and BWO activity, so presenting their life cycle patterns is quite effective.


Henry’s Fork, April 25th, 2020

Flow out of Island Park Dam has been raised from around 550 cfs to nearly 900 cfs.  This flow is not carried down much to the lower river where flows are a bit above normal for this time of year.  Fishing on the lower river is good ( BWO, March brown, midge, caddis  small stonefly life cycle patterns and streamers) except for windy days when anything emerging onto the surface is blown away before fish have a chance to raise to them.