South Fork & Henry's Fork Fishing Reports

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Fishing Reports

Jimmy's All Seasons Angler / Fishing Reports

Henry’s Fork, September 26th, 2020

Brown trout are beginning their runs to spawning areas. The best time to encounter them is in the evening or at first light in the AM. Use streamer and woolly bugger type patterns to encounter them. On windy days look for diminished aquatic insect activity.  When the wind dies and if overcast and cool weather remains the BWO, mahogany dun and midge activity will return.

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Henry’s Lake, September 26th, 2020

Surf was up yesterday thanks to the high winds. White caps could be seen from surrounding roads. Conditions there today are likely similar. So be able to swim, bring your surf board and dress in a wet suit.  Surfing may be safer than fishing from a boat on days such as this!  Take weather into account when planning a trip to fish here.

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South Fork, September 26th, 2020

Don’t expect to see big aquatic insect hatches during these windy days. Those bugs get blown away before mating and know it.  Cool air temps will also slow down terrestrial insect activity.  So think streamers and nymphs. And be sure to have rubber legs in that fly box. That pattern seems to remain effective throughout the season on the South Fork.

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Henry’s Lake, September 19th, 2020

We have not heard much about fishing success other than moderate sized cutts make up the bulk of catches. We do know that as the weather cools off fishing will improve with larger fish moving around the lake. However, look out for windy weather that can whip the surface in near breakers.

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Yellowstone Park, September 19th, 2020

The big Park fishing event is brown trout migration. This is big time in numbers into the Madison River, but even more numerous into the Lewis River between Lewis and Shoshone Lakes and into the river below Lewis Lake.  Streamer presentation is the name of the game.  Use stout leaders and rods of at least six-weight.  Be ready for changes in the weather towards cold and stormy because these conditions seem to make the browns most active. Bring a camera because you have the chance of encountering the fish of the year.

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South Fork, September 19th, 2020

The constant flow out of Palisades Dam, about 7000 cfs (  about 7600 cfs at Heise, about 3300 cfs at Lorenzo ) makes for good fishing and a lot of places for walk-in fishing. BWO, mahogany dun and caddis activity are making the dry fly fisher happy. Even a few mutant golden stones remain, but do not overlook pitching a streamer during the evening hours.

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Henry’s Fork, September 19th, 2020

Flow out of Henry’s Lake has been cut in half. This means fish in the Flat Ranch section of the river will be moving downstream into the Henry’s Fork. Until we have a killing frost, terrestrial insect patterns will be most effective along the Last Chance-Harriman section of the river and also along the lower river.  BWO life cycle patterns remain effective everywhere as will patterns for PM caddis activity.

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Still Waters, September 19th, 2020

Daniels Res

Daniels Reservoir currently provides the most consistent fishing. Midge pupa under an indicator and at the taking depth scores best almost anywhere. Small leech patterns presented on intermediate lines around weed beds and drop-offs get results.  Paul Reservoir, weedy around it edges, offers small cutthroats responding to leech patterns where you can get past the weeds. Springfield Reservoir is quite weedy making wet fly fishing confined to channels between weed beds. Action at Sand Creek Ponds has been slow because of high water temps, but these soon will be cooling. In fact cooling water temps will result in improved fishing on all still waters.

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