South Fork & Henry's Fork Fishing Reports

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Henry’s Fork

Jimmy's All Seasons Angler / Henry’s Fork (Page 20)

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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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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Henry’s Fork 7-10-12

The upper river offers the best fishing now, with flavs appearing in the PM, AM PMD spinner falls, evening caddis hatches and a growing terrestrial insect population. All this is taking place on the Last Chance-Harriman reach. Box Canyon offers good nymph fishing with you favorite bead head nymphs in medium sizes and with rubber leg patterns. The big event on the river this week on July 12th is the Caldera Symposium which combines science and fly-fishing.  This event takes place 8:30 AM to 5:30 PM at Pond’s Lodge. Go to the Henry’s Fork Foundation web site to see details on this event which promises to increase your knowledge on how to approach Henry’s Fork fly fishing and appreciation for its fishery.

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Henry’s Fork 7-7-12

The lower river has entered the usual summer doldrums. So go to the upper river for best fishing. Box Canyon offers good nymph fishing with you favorite small bead head patterns or medium sized rubber legs. On the Harriman-Last Chance reach the brown drakes are winding down, so spinners and caddis bring best evening action.  PMDs bring mid day action with emerger patterns producing best. Later in the afternoon flavs emerge and bring action.

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Henry’s Fork 7-3-12

With green drakes passing their peak, start looking for flavs.  Brown drakes are making for great evening fishing, especially on the lower part of the Harriman reach.  Evening caddis and AM PMD spinner falls are going on everywhere on the river.

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Henry’s Fork 6-30-12

Following is a note from the Henry’s Fork Foundation concerning  the ongoing reconstruction work at Ashton Dam. In the meantime fishing conditions and fishing success should remain good.

Hi all,

At the Ashton Dam reconstruction project, they are having problems with the rubber seal over the upstream coffer dam coming loose, resulting in some additional sediment moving downstream.  To fix this problem, they need to send divers down to re-anchor the rubber blanket.  Since this work is being done next to the dam bypass tunnel, they will need to partially close the tunnel while they do the work.  However, as this is peak irrigation season,  they have to balance this work with downstream irrigation needs.  The result will be some major fluctuations in Henry’s Fork flows below Ashton Dam throughout the day.  Flows could fluctuate from 1200 cfs up to 3000 cfs, and this fluctuation may happen four times that day.  Idaho Fish and Game will be monitoring things that day.

 

Bottom line, Monday July 9th will be a day you don’t want to be fishing below Ashton Dam.

Kim Ragotzkie

Stewardship Director, Henry’s Fork Foundation

& Hold the Line Project Coordinator, High Country RC&D

208-652-3567 office

208-569-9775 cell

 

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Henry’s Fork 6-29-12

Along the Last Chance-Harriman reach green drakes are coming off during mid day, and a few flavs appear during afternoons. PMDs are making for action during daytime with AM spinner falls also bringing responses.  On lower the lower Harriman State Park reach brown drakes are making an appearance evenings. The peak of that event is yet to come.  Expect crowds when you fish anywhere here.  Want to enjoy fish responding to green drakes, some PMDs, and later in the day caddis without crowds of fly-fishers? Go to the Nature Conservancy’s Flat Ranch reach on Henry’s Lake Outlet. The drakes emerge from about 11AM to 2PM with some fish responding to PMDs. The caddis take over later. In general the fish run smaller than on the Harriman reach, but don’t let that fool you because some dandy hybrids inhabit the Flat Ranch reach. Also a few rare three to four pound cutts could surprise you.

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Henry’s Fork 6-26-12

Gray drake emergence on the lower river was pretty sporadic this year. It’s pretty much over now, but green drakes, flavs, PMDs, and gobs of caddis are active.  Fish are responding to these between Ashton & Chester dams. Late afternoons are best times for fishing, especially after 7 PM when wind begins to die and most folks are gone from the river. Yes, the river is somewhat discolored because of activity at Ashton Dam, but that does not seem to hurt the fishing much.  From Warm River to Aston same emergences are going on, but fish will take a dry golden stone pattern, too.

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Henry’s Fork 6-22

The Lower Henry’s Fork near Ashton has been fishing well. Early  morning fishing consists of an adult Golden Stone (CFO Flammer Ant size 6)  with a dropper such as a Red Copper John size 16. Noon fishing would be PMDs from 12 o’clock to 3 o’clock. From 5 o’clock to 7 o’clock Flavs (size 14)  were coming off with fish taking them on the flats. Finally from 8 o’clock to dark, an improved x-caddis tan size 16 and 18 was the ticket. There are also some Gray drakes.

 

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Henry’s Fork 6-14

Tomorrow is opening day on the Ranch. Caddis and Pale Morning Duns have been hatching in good numbers. I would have also have some green drakes in my fly box as well. We have not had any confirmed reports of Green drakes hatching yet. However don’t be afraid to fish one, if some of these flies have been hatching the fish will be looking for them. Golden Stones have been producing fish as well. We have had good success on streamers from Ora Bridge to Chester backwaters the past few days. Don’t let the off color water scare you away from this stretch. The water is off color but not that bad and some big fish have been caught on streamers and stoneflies.

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