South Fork & Henry's Fork Fishing Reports

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Author: Everet

Jimmy's All Seasons Angler / Articles posted by Everet

Closeout Sale Fall/Winter 2017

We have a ton of marked down Simms Boots (G4 boa, G3, Rivertek Boa, Freestone) and a few G3 Stockingfoot and Bootfoots on closeout here at the shop. The discounts are significant! This is a great time to pick up some quality gear as Simms products do not go on sale very often. Call us (208-524-7160) or stop in at the shop before they are all gone!

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South Fork and Main

As Flows on the south fork drop to around 2,500 cfs out of Palisades dam, we are starting to see what the wade options are going to look like during the first part of the fall and winter months. Talk is that the river flows will be re-evaluated after the 1st of December, in which case will most likely be increased. This can mean some good news for the boat fisherman, as float will take less time to complete, and you will be able to cover more water. For the wade fisherman these changes will have more effect than in winters past where we are use to seeing the flow around 1,200.

As for the current conditions, the South Fork streamer fishing has been pretty good on cloudy days, and even on some random sunny days as well.. Color is the name of the game her, so bring your sparkle, white, yellow, tans, and olives. Some days the darker colors really do well, but overall this river seems to respond best to brighter, and flashier patterns.

Dry fly fishing is good, but as per usual, the cloudy days reign supreme. Fish size 18-20 BWO patterns, and 18-20 midge  patterns. Back eddies are a great option for finding fish feeding on the surface.

Try fishing nymphs from the boat set at 5-6 feet for floating. I generally run much deeper when standing on a riffle, and in most cases would recommend the same. Use a small rubberlegs, a san juan work, or a big caddis pattern, trailed by a small beadhead mayfly nymph in the size 14-18 range. If in doubt, a red Zebra midge will usually get the job done as a trailer fly.

As for fishing on the main (Idaho Falls to American Falls), the streamer is the main game here, as browns are in their pre spawn, and are on the streamer bite pretty well. Patterns I usually do best on are Tan or natural peanut envys, and sex dungeons, but like anywhere changing pattern and color can sometimes make the difference.

American Falls is running at 2,100 cfs, and the wade fishing is much tougher than usual. The water had changed colors the last time I was there a couple days ago, leaving the visibility at roughly 2′ tops. I would recommend that anybody planning on wading there to bring a wading staff so they can poke around before they step. Flies that are fishing well is pretty much any beadhead nymph in a size 12-18, and dead drifted streamer patterns. If your into dry fly fishing, you can fish blue winged olives and find success.

 

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Henry’s Lake 9-30-17

Henry’s remains fairly slow fishing unfortunately. The water clarity remains very poor with the algae conditions. This issue should go away any day now with the cooler temps, but as of this posting, it is still present. Once the algae is gone, the fishing should be excellent. Fish have moved in to the Howard Creek, Pintail Point, and Hatchery areas and should be willing once the lake clears up. We will be sure to update everyone as soon as the algae is gone.

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Henry’s Lake 9/20/17

Well, we got the weather change we all wanted! Unfortunately for us, it came pretty hard and fast and has slowed the fishing down. As soon as the weather mellows out and warms back up, it will be go time up at Henry’s. Leech patterns in darker colors should be the go-to for the rest of the fall. As far as location goes, anywhere with fairly clean water will fish well. Concentrate fishing in water under 10ft with the appropriate lines. A lot of the big fish lately have come in very shallow water and we have started carrying a couple new lines in the shop to help you get to these fish. Give us a call at the shop about these new lines and we can get you squared away!

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Stillwater goes as the weather goes

Stillwater fishing has been very tough on area reservoirs since ice out. The cold weather has been keeping water temperatures way down and bug activity to a minimum. Of all the lakes Springfield has been fishing best, although even that hasn’t been very good. If you go to springfield, small chironomids and leeches have been best. We really need water temperatures to get and stay above 50 degrees before things really get going. Once that happens, look for chironomids to start popping on all area reservoirs and fishing to drastically improve.

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Henry’s Lake 10-13-16

Henry’s has not been its usual fall self lately. We have had storm fronts roll in every couple of days along with high winds that have kept the lake off color and the fish tight lipped. If the weather is consistent the fishing has been better. The surface temps on the lake yesterday were in the low to mid forties, so the temperature is certainly right for better fishing.

The shallows around the northwest corner and the State Park have been best. If the water is off color, use a larger darker leech pattern and cover as much water as possible. If your fishing the State Park specifically, guys have been having success with larger chironomid pupa under indicators.

Hopefully the weather will allow us some of the great fall fishing were all used to!

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Henry’s Lake 9-15-16

Henry’s is showing signs of improvement, but overall fishing remains pretty tough. The key has been finding fish, if you can do that, the fish have been pretty willing. Wind storms have pounded the lake this late summer/early fall and combined with the blue/green algae bloom, half the battle has been finding clean water. The good news is with the cooling temperatures, the algae is disappearing and the weeds are dying off.

Now for the fishing……Concentrate your efforts in fairly shallow water (10ft and less) with type II and intermediate lines. There is still a fair amount of weeds present but don’t let that discourage you. The best fishing has been in amongst the weeds. Prospect with fly patterns until you find something thats working. All the traditional leech patterns (california leech, hot chocolate, Brown CB, Olive CB, mohair leeches, etc…..)  have been working in sizes 6 & 8. Later in the day switch over to scuds, mighty mouse, HL renegade, and other smaller flies. If your into drifting with flies, there have been some large fish caught recently drifting between Targhee Creek and the State Park. Use a fairly fast sinking line if your planning to drift that area.

We have also had quite a few people calling and asking if the cutthroats have moved into the state park area, and the answer is not yet… That could happen any day now though so I would check it if your on the lake. The water temps are right and it feels like the lake is just about to go off, lets hope its soon!

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Franklin County Lakes & Invasive Species Update

A big story this spring in Franklin County has been the threat to close access to lakes because of the concern of invasive mussels. The situation seems to be constantly evolving, but here is the most current information as we have heard it. The whole situation is very confusing, so interpret this information as you wish, hopefully things are clarified here shortly.

All Franklin County Reservoirs: No ballast compartment boats allowed (wake board boats)

Twin Lakes : $5 launching fee, all watercraft using Twin Lakes must have been recently inspected by an inspection station operated by and for the ISDA and have in its possession written certification. You have to stop at Twin Lakes e to show this.

Glendale Reservoir: The barricades will be open tomorrow May 15 at 7:00 a.m. A verification checkpoint will be staffed 7 days a week from 7 am to 7 pm The cost for verification per watercraft will be $10.00 for Franklin county residents and $20.00 for out of county. The license plate of the tow vehicle and driver license will prove residency. No cash accepted just debit/credit cards and local checks.
The verification staff will be asking for proof of a ISDA inspection form/passbook for any watercraft that has left the county AND a 2016 invasive sticker attached to vessel or Idaho boat registration. The ISDA form must then be displayed on the dashboard of tow vehicle. County residents need to visit the ISDA station within 5 days of launching or have an ISDA trailer/boat orange tag.

ISDA stations are open all daylight hours. One is located at Highway 91 in Franklin City. Others at state line roads throughout Idaho.”

These are the two main lakes we have heard information about. You can safely assume that all lakes owned by the Twin Lakes Canal company will have these regulations in place.As of this writing, nothing has been posted or made known to us about Treasureton Reservoir.

Speaking of Treasureton…… For those who fish Treasureton, this is a big year for the lake. For several years the Fish and Game has been monitoring the situation at the lake with illegally introduced Largemouth Bass. There is talk of poisoning the reservoir this fall and starting over. We have been talking to biologist Dave Teuscher about this and have mixed feelings. Here is a message from Dave regarding the situation;

“We have been considering a treatment since bass were illegally introduced about 10 years ago. As you know, we have many bass fisheries in Franklin County and Treasureton Reservoir is managed as a trophy trout water. I am preparing a data summary for the reservoir that shows the changes that have occurred in the fishery and what actions IDFG has completed to limit bass expansion (e.g., no harvest or size limit on bass and moving bass from Treasureton to other bass fisheries).

We plan to have that summary done in the next week or so. Please check back with me for a copy.

Prior to making a final decision, we will hold a meeting in Preston to discuss options. I will also be trying to meet with the irrigation company to get their input. The irrigation company has been excellent to work with and very supportive of the fishery.”

We will be sure to update conditions as they progress, as well as when this meeting will take place. Dropping an email to the Idaho Fish and Game would be a great way to voice your opinion as well.

 

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