South Fork & Henry's Fork Fishing Reports

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Fishing Reports

Jimmy's All Seasons Angler / Fishing Reports (Page 34)

Henry’s Lake 9-10-18

If you wait all season to hear a report of Henry’s Lake picking up, you may miss the fall season completely. Numbers appear to be down considerably on the lake, but the size of the fish is more than making up for it. There have been many large hybrids caught this season by folks paying their dues and if you want to have your shot at one, I’d go sooner rather than later. There hasn’t been any one area that has been on fire, I’d pick a spot on the west or south shore in 6-10ft of water and fish hard. Fly choice doesn’t seem to be too important, I’d stick with all the traditional mohair leeches and crystal buggers in sizes 6 & 8. This fall, its going to be about putting your time in at the lake. Make sure you have an assortment of fly lines with you as depths your fishing and depths the fish cruise can vary throughout the day. We’ve been having success with the new SA frequency type 1 line for the shallows, the cortland clear camo intermediate for the 5-8ft range, and the revamped SA wet cell lines for the deeper water. We get folks in all the time asking for the best “do all” line for Henry’s and the honest answer is none. You really need 3 lines minimum to effectively cover your bases on the lake, any less and you leave yourself the chance of being unprepared for certain situations. We have all the lines above in stock at the store and would be happy to help answer any questions and get you set up for your trip. We have a few guys fishing it weekly in the shop here, so check back with us for updated reports.


Still Waters 9-8-18


Daniels Res

Daniels Reservoir remains offering the best still water fishing to the south. Try midge patterns deep under an indicator, or small leech patterns in shallow water. If wind muddies shorelines through wave action, present those leech patterns close to the clear-discolored water interface.


Small Streams 9-8-18

Bear Creek reduced

Smaller streams are now mostly at base level. That means concentrate fishing efforts on deepest downstream water. Terrestrial insect patterns will be effective, even for days after a killing frost. In the smaller category Bear, Birch, Palisades, and Big Elk Creeks currently offer the best fishing.  Larger small streams offering good fishing are the Teton River throughout, lower Blackfoot River (still a bit high with nymphing and presenting streamers best ways to find action), and Warm River (BWO, hopper, and caddis activity).


South Fork 9-8-18

03-12-09 South Fork 010

Flow out of Palisades Dam has been stable for several days at around 8500 cfs.   Expect flow to drop further soon. Hopper fishing is great up and down the river, and evening caddis activity continues to attract trout.  Some mutant stones are present, but lower water would help their numbers. Mahoganies and BWOs will begin to be important soon as we cool off.  The same will apply to streamers presented during low light conditions.


Henry’s Fork 9-8-18




Not much change here with AM trico swarms, daytime terrestrial insect activity, and evening caddis activity. This applies to just about the entire river.   As browns begin to migrate in the lower river streamer fishing will be increasingly effective, especially during low light conditions.  The lower river is cooling so look for tiny BWOs to become active enough to interest trout.


Yellowstone Park 9-4-18


upper slough (2)

It sure seems like a repeating theme and it applies to all meadow streams in the park. AM trico activity and daytime terrestrial insect activity are the best items for successful fishing. With cooling air temperatures look for fishing on the Firehole River to improve. BWO life cycle and white miller patterns will bring success. The autumn run of browns and rainbows out of Hebgen Lake into the Madison River in the park has begun and will increase as we move through the next two months.   Presenting big soft hackles and streamer patterns are the best way to encounter these fish, and best results will be during overcast conditions.


Small Streams 9-4-18


Bitch Creek 9-25-13

With school now in session, most vacations over, and cooling daytime air temperatures, look for a decrease in recreational floaters and boaters on the Teton River in the basin and even through the canyon. That signals a return to tranquil daytime fishing.  For the river in the basin successful fishing is tied to Early AM trico activity and terrestrial insects during daytime hours. Big attractors (ie chubby chernobyls) will always be effective in the canyon reach this time of year.


Henry’s Fork 9-4-18


Tom Clark.jpeg

Terrestrial insect season is going on up and down the river. Exceptions include AM trico mating-spinner falls and evening caddis activity.  PMD activity is greatly diminished and speckled duns are important only on slow river reaches such as the Flat Ranch and Harriman State Park.  When cloudy days arrive streamer fishing will be more effective during mid-day rather than just around first light and twilight.  Tiny BWO activity on the lower river is several days away.


South Fork 9-1-18


SF With Baldy 2 (640x480)

Flow out of Palisades Dam was reduced to 8550 cfs  (same cfs at Heise, 2770 cfs at Lorenzo) Tuesday. This will make for more walk-in wade fishing locations and increase the mutant golden stonefly emergence.


South Fork 8-28-18


South Fork 4

No change in flow here, currently flow is a bit higher than the average for this time of year, so reduced flows are coming up as irrigation season winds down. Stick to what we suggest in the  8/25/18 report for the South Fork. Mutant golden stones have moved into the lower canyon, but hopper fishing there seems more effective.