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Author: Bruce_Staples

Fly Fish Food Jimmy's / Articles posted by Bruce_Staples (Page 61)

Yellowstone National Park, September 18th, 2021

September 18, 2021
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Fishing Reports, Yellowstone Park

Other than the fall mayfly peak on the Firehole River, the big event is the brown trout migration in the Gardiner, Madison (with accompanying rainbows),Lewis, and Snake River drainages. Crowds of anglers will descend on these events as they progress. The best time to enjoy these events is during unsettled weather which tends to reduce crowds and improves fishing. So watch park weather reports and break out that store of foul weather fishing gear if you are considering fishing these migrations.

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South Fork, September 18th, 2021

September 18, 2021
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Fishing Reports, South Fork

Palisades Reservoir is at 16% of capacity, and flow out of the dam is 7800 cfs ( 8830 cfs at Heise, 4400 cfs at Lorenzo) today with more reductions coming up. It’s been a slow year for mayfly activity on the river. Let’s hope the upcoming unsettled weather brings on decent BWO and mahogany dun hatches. With fall colors beginning to show, now is a scenic time to be on the river.

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Big Lost River, September 18th, 2021

September 18, 2021
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Big Lost River, Fishing Reports

Flow out of Mackay Dam is 108 cfs making for relatively easy wading in the river below. Water has some discolor from silt coming in from reservoir remainder above, but AM tricos emerge. Bead head nymphs, soft hackles, woolly buggers and small streamers are producing. Some BWOs appear in the PM.

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Henry’s Fork, September 14th, 2021

September 14, 2021
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Fishing Reports, Henry's Fork

The late summer mayfly activity peak is on going up and down the river. BWOs, mahogany duns, and tricos lead with respect to quantity and are accompanied by diminishing PMDs and speckled duns. Add a good number of terrestrial insects remaining streamside and a great time to be dry fly fishing here continues.

Below are excerpts from Dr. Rob Van Kirk’s analysis for today of Henry’s Fork drainage water status.

Headlines:  

  • Dry conditions continue, with only light precipitation forecast over the week.
  • Diversion decreased yesterday on the lower Henry’s Fork, increasing stream flow there by around 20 cfs.
  • At an average outflow of around 500 cfs, Island Park Reservoir dropped 205 ac-ft yesterday and is 41% full, compared with 46% full on average and 15% full in 2016.

Details:

Mean temperature yesterday was 1 degree F above average, and no precipitation was recorded. Updated precipitation data from SnoTel stations confirmed that water-year precipitation to date is 81% of average. With only 17 days remaining in the water year and no heavy precipitation in the forecast, precipitation for the water year will end up in the neighborhood of 80% of average. That will put 2021 somewhere in the range of 4th-7th driest since 1989. For reference, precipitation in 2016 was 88% of average. Temperatures over the remainder of the week are expected to stay around where they were yesterday. Precipitation is possible on Sunday and Monday, although amounts look light.

Diversion decreased by around 25 cfs yesterday, all of which occurred on the lower Henry’s Fork. Meanwhile, natural flow stayed roughly constant, although that in Fall River dropped by around 5 cfs from a small bump over the weekend resulting from rain on Friday night. The net result was an increase in stream flow of around 20 cfs on the lower Henry’s Fork. Otherwise, conditions in the lower watershed have been very stable for the past week.   

All measures of water quality remain very good in all river reaches. Turbidity at Island Park Dam continues to decrease on both sides of the dam.

Rob Van Kirk, Ph.D.

Senior Scientist

Henry’s Fork Foundation

P.O. Box 550

Ashton, ID 83420

208-652-3567 OFFICE

208-881-3407 CELL

208-652-3568 FAX

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South Fork, September 14th, 2021

September 14, 2021
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Fishing Reports, South Fork

Flow out of Palisades Dam has been reduced to a bit over 8000 cfs the last few days (now 9150 cfs at Heise, 4190 at Lorenzo). Let’s hope the cooler, cloudier weather predicted for next weekend brings on increased BWO and mahogany dun activity. Meanwhile, rely on hopper-dropper and two nymph rigs, afternoon caddis activity, and evening streamer presentation for action.

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Yellowstone National Park, September 11th, 2021

September 11, 2021
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Fishing Reports, Yellowstone Park

Nearly all park streams offer sub par fishing because of the unusual hot and dry weather continuing for months. It is cooling off, so lakes at higher elevations, such as Beula, Hering and Riddle offer some fishing. The annual brown and rainbow migration out of Hebgen Lake into the Madison River has begun, and crowds will build along the river as the run progresses. The same will happen along the Lewis River below Lewis Lake and between that lake and Shoshone Lake where the densest brown trout migration in the park occurs. The Firehole River is cooling and thus offering better conditions for trout meaning a visit to fly fish is worthy..

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