South Fork & Henry's Fork Fishing Reports

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Fishing Reports

Jimmy's All Seasons Angler / Fishing Reports (Page 75)

Small Streams 7-17-12

The recent thundershowers are just what is needed to extend good fishing on many of these streams.   These will be fairly common through summer, and unless a deluge hits directly the cooling effect of a shower on water and rise in relative humidity of the atmosphere above the water are the reasons why right after a shower is a good time to fish. Insects will be more active because the humidity keeps them from drying, overcast sustains it,  and with lowered air temperatures they are more able to complete their life cycle.  The intensified activity attracts fish to feed.  So hang around to see if hatches occur when you see a storm leaving and water levels and clarity seem not greatly impacted.

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Henry’s Fork 7/17/12

There are enough flavs and PMDs left to interest fish and make a trip to the upper river worthwhile, but look for terrestrial insects to increase in importance as a food form for fish as we move to mid summer.  Want to get away from the crowds at the most popular spots on the upper river?   What we know as Henry’s Lake Outlet is really the Henry’s Fork, and as long as a good flow comes out of the lake, good-sized fish will remain there and make it worth the time spent trying for them. The flow out of Henry’s Lake is still over 100 cfs, but is sure to drop as summer progresses meaning the larger fish will eventually move downstream.  With the flow at the current level the Flat Ranch part of the Outlet, owned by the Nature Conservancy, is an attractive place to fish. It has a character different from downstream reaches, being a medium-sized meadow stream.  It hosts a good mayfly and caddisfly population. Terrestrial insects are important here, and because most of the larger fish originated in the lake, such as damselfly nymph and small leech patterns work very well.  Consider trying this part of the river particularly were willows provide overhead cover.  Stop at the Conservancy’s Visitor Center  just off Highway 20 to check in and observe fishing regulations. Who knows a cutthroat or cut-bow hybrid of the year could be waiting for you.

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Small Streams 7-14-12

Some of the smallest are beginning to warm up as flows get down to base level. Lower Fall River is an example because of irrigation draw down. If you see kids swimming in the river just below the Highway 20 bridge, that is a clue for water warm enough to be uncomfortable for trout.  Other small streams are doing quite well.  We have reports of fish responding very well to PMDs hatching from the Teton River in the Basin and fish responding very well to afternoon caddis flights in Robinson Creek.

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South Fork 7-14-12

No significant change here since our 7/12 report.  Follow our fishing suggestions within it.  We are so fortunate that flows out of Palisades Dam have remained constant at an almost ideal level for fishing for so long.  This cannot last forever during this so far hot and dry growing season.  Sometime in the future there will be an flow increase that will effect fishing. We will keep our eye on the South Fork gauge just below the dam to warn when this happens.

One other thought; please consider courtesy when using boat launch facilities. If you see a “crunch” coming, maybe have some more of whatever refreshment and tell another story.  Hey; we are fly-fishers! Each of us has a backlog of stories. Who cares about believabilty whnit is all in fun!

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Henry’s Lake 7-14-12

Fishing seems to be holding up fairly well.   Creek mouths and spring holes are becoming the best places as fish seek cooler water. Try such as mity mites, small bead head peacock leeches, snail patterns, and your favorite small wooly bugger types.  By mid day there could be as many boats as fish around the best creek mouths, so go to boat launches before daybreak and don’t use your bright headlights.

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Yellowstone Park 7-14-12

Cloudy wind free days like today bring out mayflies big time.  Now is the time to be on Fall River Basin streams, Slough Creek, Lamar River, Yellowstone River below the lake, and Lewis River Channel.  Beula Lake is producing well with damselflies and speckled duns continuing to hatch and bring action.  Pelican Creek opens for fishing tomorrow, but don’t expect the number of cutts we had returning downstream back in the 1990s.

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Henry’s Fork 7-14-12

Brown drakes are winding down on the upper river, but PMDs and afternoon flavs and later caddis make for good fishing during cloudy days like today.   Start thinking terrestrials. For now that is ant, beetle, and cricket patterns.  Soon it will time to break out hopper patterns, but have you ever tried presenting a hair mouse at dusk….. ?

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