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Author: Bruce_Staples

Fly Fish Food Jimmy's / Articles posted by Bruce_Staples (Page 20)

Small Streams, August 29th, 2023

Mahogany Dun

Good mayfly activity will begin on many streams as we begin the fall emergence peak. Gone are such as brown, gray and green drakes, flavs, and march browns. Only a few smaller PMDs are around on some waters. Tricos are diminishing, but speckled duns will remain in good numbers for weeks especially on still waters..The fall BWO hatch will begin any day now and carry on until winter sets in with such as tiny BWOs included. Pink alberts, also know as snowflake duns, will remain for a while. Mahogany dun hatches will be important and widespread. The Hecuba may fly hatch, more scattered and less consistent will appear on relatively soft bottomed streams. Mistakenly called green drake because of its size, it is famed for consistency on such as Slough Creek, but is less abundant on most Fall River Basin streams having a similar substrate.

A single track bypass road has been opened around the damaged section of the road to Bear Creek. The bypass road is suitable only for single vehicles, but not for those with a trailer. More information on the bypass can be obtained from the Caribou-Targhee Palisades District Ranger Station. Reconstruction of the main road will not be completed this year.

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Henry’s Fork, August 29th, 2023

If you see flying ants anywhere along the river, you have found the insect that trout will be keying on for weeks to come. Be sure to have patterns for them in that fly box. Also hopper-dropper combinations seem to work wellanywhere on the river.

Headlines from Dr. Rob Van Kirk’s Henry’s Fork Drainage Water Status Report Filed Monday, August 28th.

  • Last week was on the warm and wet side, keeping water-year total precipitation 109% of average.
  • Natural flow and diversion have stayed relatively constant over the past few days; irrigation demand and lower-watershed streamflow targets are currently being met with little to no reservoir draft.
  • At an average outflow of 565 cfs, Island Park Reservoir gained 807 ac-ft since Friday due to rain and is 62.6% full, compared with 51.2% full on average.
  • Water temperatures over the past few days have been well above average; turbidity remains well below average but could increase at Island Park Dam late in the week.

Rob Van Kirk, Ph.D.

Senior Scientist

Henry’s Fork Foundation

P.O. Box 550

Ashton, ID 83420

208-881-3407 CELL

208-652-3568 FAX

[email protected]

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Jackson Hole One Fly Contest, September 7th-10th, 2023

Every September in Jackson Hole, WY. forty teams put their skills to the test fishing two days, each with a single fly, with team and individual scores determined by the quantity and length of fish caught.  The Jackson Hole One Fly Event uses monies raised to fund conservation, habitat preservation and rehabilitation projects, along with stewardship education for the benefit of trout populations primarily in the Snake River Basin and the headwaters in Yellowstone Park.

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Main Stem Snake River, August 26th, 2023

Snake River at Freeman Park

Now that irrigation flow is decreasing it is time to begin looking at fishing the Main Snake River from the Henry’s Fork confluence downstream to American Falls Reservoir. There are numerous public access points from below power plant dams to the many boat launch facilities and scattered bank side public land. Conveniently some good access is present along the river in Idaho Falls. For example, from Freeman Park on upstream on both sides of the river there are places that offer plenty of room for a back cast and for safe wading. Brown and rainbow trout here range to trophy sizes. The fall mayfly hatch will consist of BWOs and can be enjoyed afternoons at most locations along the river. With September approaching another may fly hatch will interest trout significantly. That is of the snowflake dun ( also know as pink lady), the best concentrations of which are found on the lower river above American Falls Reservoir such as around the Tilden Bridge area to McTucker Ponds. As we advance into the fall season, the big attraction will be brown trout runs. This means presenting streamer patterns will be the the name of the game. So this part of the river so close to town is hard to beat on considering convenience.

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South Fork, August 26th, 2023

The relatively small fluctuations we are currently seeing in flow out of Palisades Dam have no big impact on fishing success. The density of thunder showers and rain storms have impacts that outweigh these. Here is why: During and right after these events relative humidity rises making aquatic insect hatches denser. Right after these storms clear up and downdraft winds decrease is also a good time to try patterns such as San Juan worm and woolly bugger types because increased flows free up annelids into the river.

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Small Streams, August 26th, 2023

Electroshocking for trout population studies will be undertaken by Idaho Department of Fish and Game biologists on the Teton River in the Basin. Here is their schedule and locations:

September 6th and 13th, South Bates to Bates.

September 7th and 14th, Packsaddle to Harrop’s ( State Highway 33) Bridge.

Medicine Lodge Creek

Most of our small streams are in great summer shape. They radiate heat during night time, so early AMs are at their lowest water temperature. Give them time to warm up to the level that makes fish and aquatic and terrestrial insects most active (usually by late morning), and they will offer great fishing.

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Still Waters, August 26th, 2023

There is an excellent article on the Idaho Department of Game’s News Release Page. Titled ” Collaborative Effort to Restore Bear Lake Bonneville Cutthroat Trout Receives National Award.” It describes how government agencies, conservation organizations and private land owners are combining to restore access to spawning areas and the quality of such. These efforts appear to result in increasing the wild Bonneville cutthroat population in spawning runs but also their population in the lake.

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Warm Water Fisheries, August 22nd, 2023

There is a very interesting article in the News Release section of the Idaho Department of Fish and Game’s website. It is titled “Smallmouth Bassin’ on Ririe Reservoir.’ From reading the article, it looks like the “smallie” population is doing well in the reservoir. There are established smallie populations in the Snake River below American Falls and in some of our irrigation reservoirs to the southeast, but these are a bit distant from the upper valley. That is not the case with nearby Ririe Reservoir.

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South Fork, August 22nd, 2023

The recent minor ups and downs of flow out of Palisades Dam should have little impact on fishing success up and down the river. With some continuing rain and cloudy skies perhaps having a few patterns (i.e. san juan worm variants, balanced leeches, etc ) in that fly box is a good option because wetter banks mean more worms (annelids) are washed into the river. The cloudy, cool weather is also ideal for denser mayfly activity which will enhance riffle fishing success during day time hours. Increased overhead cover from the current weather pattern also makes responses to streamer patterns more likely.

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Small Streams, August 22nd, 2023

Is that fly fisher getting too close?

Visiting many of our small streams means traveling to relatively remote places. While “hustle and bustle” reigns on many of our icon waters, tranquility reigns around the remote places and is a major attraction for many of us. On visiting these special places, it is good to remember that with respect to resident wildlife, we are the invaders. Thus measures to minimize contact with them are in ours and their best interests. Yes, we carry bear spray and perhaps a claxon horn in areas of high bear populations, but being aware that any wildlife can be stressed by our presence is appropriate. So when visiting any of our numerous back country waters be ready to provide any nearby bear, moose, elk, deer and others a comfortable distance for continuing their tranquility.

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