South Fork & Henry's Fork Fishing Reports

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Fishing Reports

Jimmy's All Seasons Angler / Fishing Reports (Page 87)

Henry’s Fork 7-28-12

It’s time to use terrestrial patterns on the upper river.  Caddis swarms and AM diminishing spinner falls still happen, but those ant, beetle, horsefly, and hopper patterns seem most effective. Want to fish Box Canyon?  During daytime you will share it with innertubers and rafters.  So fish there very early in the day or fish from dinner time to twilight.  Bead head nymphs and terrestrial patterns presented tight to the bank still work.  On overcast days any kind of big stonefly nymph will attract interest.

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Small Streams 7-28-12

Those with good overhead cover are at their fishing best right now.  Almost every one will have an evening caddis swarm, and you can bet that during daytime terrestrial patterns will be effective on all of them.  A few, like Beaver, Birch and Medicine Lodge creeks will have tricos for some good morning fishing . And best of all most will not be crowded. Come in to chat with us about choosing a small stream that is sure to offer you a great time.

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Still Waters 7-28-12

There is a possibility that both Chesterfield and Treasureton reservoirs could be drawn down to levels that will support very few fish.  So even though these are at low levels now and have warmed up, consider an early morning or evening visit to either that may not have a good number of carry overs for next year.

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Yellowstone Park 7-28-12

On any of the Park’s meadow streams, ie Lamar, Bechler, Madison, Fall, Lewis, Gibbon rivers, Boundary, Duck, Slough, Obsidian, Soda Butte creeks, its time to be the “Henry’s Fork Hunchback”.  It’s a great time of the season to be on this type of water.  But low, clear slow flowing water offers less overhead cover in mid summer, so fish are more skittish.  Keep out of sight as much as possible and do everything you can to present those terrestrial patterns with a natural drift.  Also best times for success are early and late in the day.

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Yellowstone Park 7-24-12

Time to think terrestrial patterns on streams and shorelines of lakes. That thought applies to almost all Park waters.  One exception is the big stoneflies moving up through the Yellowstone River canyon above Gardner.   A good way to enjoy fish responding to them is to take a four-mile walk to the river down Blacktail Deer Creek. It’s a big river here, nearly the size of the South Fork reach of the Snake River, and you will have to commit to either side.

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South Fork 7-24-12

Riffle fishing has not reached its peak on the river.  Best riffle fishing method these days is to use dry-dropper combination.  Otherwise try  hitting the banks with your favorite chernobyl type big enough to support a small bead head dropper.  This technique has been working very well on the upper river.  Be ready to break out streamers at the end of the day.

From a fishing standpoint we have been fortunate to have stable flows below Palisades Dam for several weeks.   According to US Bureau of Reclamation it is likely that flow out of Palisades could remain constant through August to replenish water in American Falls Reservoir and to maintain flows for irrigation  just above the reservoir.  When water in the reservoir is at a comfortable volume to cover irrigation and demand for it just above the reservoir slows, look for flow out of Palisades to drop. We will be in contact with US Bureau of Reclamation to keep on top of flows in the South Fork.

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Small Streams 7-24-12

Hoppers are becoming a significant food item for trout in most streams now.   Be sure to have patterns for them wherever you fish.   On higher gradient small streams remember that traditional attractor patterns are as effective as ever and that some are meant to imitate terrestrial insects.

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Henry’s Fork 7-24-12

Only significant change here is that flow out of Henry’s Lake has been dropped from 100 cfs to 71 cfs.  This drop in flow means especially larger fish in the Outlet section will begin moving downstream to find cooler water and more cover.  So the best fishing here is ending for the year.  Look for further drops in flow as we move through summer.   Elsewhere along the river start gearing up for terrestrial patterns being the most effective during daytime hours.

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Still Waters 7-21-12

Draw down is warming water in our irrigation reservoirs.  With temperatures near the surface as high as the low seventies in degrees F. one must fish deep for any action.  Be ready to put those small midge pupa patterns deep below your indicator.

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