Fishing Reports

Eastern Idaho Fly Fishing Report for March 29, 2016

East Idaho Fly Fishing Report:  Spring is coming to the Rockies and it is bringing some wonderful early-season fishing opportunities!  The unseasonably warm weather has allowed for great fishing on most of the regular haunts that are open to winter fishing with the Henry's Fork of the Snake River being one of the hottest.  Most people are floating and walking stretches from the Ashton Dam down to the lower reaches.  Nymphing and streamer fishing has been the name of the game, however, some of the warmer afternoons have been bringing decent midge hatches and fish have been rolling on dries and emergers sporadically.
We have been getting a lot of questions regarding the Teton River, and it has thawed and is trying to fish.  However, with the warm weather came the mini-runoff and the water clarity has not been optimal with 6-inch to 12-inch visability.  I have personally seen phone pictures of some massive rainbows and cutthroats coming to anglers chucking streamers and catching these regularly spooky fish off guard.  If the weather persists, look for this watershed to stay relatively dirty as a pretty good runoff is expected with the amount of snow left on the hills.
We should look forward to an amazing fishing season as the mountains are filled with dense snow.  We are at near 100% of regular snowfall for the year and the three major bodies of water-fill (American Falls Res, Palisades Res and Jackson Lake) are all between 68% and 87% respectively as of this week.  In fact, Palisades Reservoir is expected to bump the South Fork of the Snake River to 3,500 cfs come the beginning of April, which will help the spring spawn kick off for the the Yellowstone Cutthroat.  The South Fork of the Snake River itself has been decent with those nymphing bead-head midges and stonefly patterns, but has remained a distant second to how well the Henry's Fork has been fishing.  With any luck, we may have a spectacular mayfly year, as well as a hopper season, so keep your fingers crossed and your lines in the water!
Call or come by any of our 5 Idaho locations to get the latest info and all of the gear you need to be successful on the water.  Thanks from the Crew at Three Rivers Ranch!

Sept 23, 2015 - Henry's Fork Fly Fishing Report

It has been a little while since our last fishing report. That being said, not much changed around here during the month of September, until now. Hoppers are still around, and they’ll still fish well on a bright (warm) day with a slight breeze. A good all around pattern for this summer to fall transition period is the venerable orange Chubby Chernobyl (size 10-12). It’s still kind of hopper season, but it’s also kind of October caddis season, but it’s still not solidly one or the other. The orange Chubby will work for either one (color up the bottom a little with a black Sharpie if you need to make it look a little more October caddis-ish).

Fish one of these big bugs with a size 14 or 16 Jig Head Pheasant Tail as a dropper. Mahoganies of this size are starting to show up, and though they may not be emerging heavily yet, you can bet your boots that the nymphs are present all over the subsurface. Another dropper to run would be the Split Back BWO (blue winged olive) nymph in an 18 or 20. The duns have been emerging in the mornings on the sunny days, and all day long on the cloudier days. Catch a cloudy day in the mid 50s to 60s, and it’s game on with blue wings. We have a killer Hackle Stacker BWO, plus Hi-Viz parachutes, and a variety of BWO cripples and emergers at the Ashton shop.

Warm River to Ashton has been the most consistent fish catching stretch. A lot of these fish are smaller, but there are some nice ones to be caught. Fishing streamers on a cloudy day has been catching a lot of nice fish. The orange Chubby-dropper rig has been a surefire producer as well. This section has a lot of structure in the middle of the river, so if you’re floating, don’t just mindlessly pound the banks. A lot of fish are to be had in the middle too.

Below Ashton:

Ora to Chester has had some awesome BWO action in the early mornings and on cloudy days. Focus on the flats between Ora and Vernon. As the day goes on, switch it up to the old Chubby-dropper. Look for fishing eating on top once the water starts to back up in the Chester backwater area. The old rusty spinner or CDC Para Spinner (sizes 18 and 16) is a pretty consistent producer in here.

Chester to Fun Farm:

Fish hangout in weird places in the Chester to Fun Farm stretch, so thinking outside the box will serve you well. Same program down here, BWOs and Mahogany patterns are a good bet, along with the Chubby-dropper. The water is low, so your dropper needn’t be all that deep. There are a few obvious flats to fish (the one below the Chester Wetlands headquarters building comes to mind) where you should be able to find some fish up and eating. Since there are a lot of browns down here, this whole stretch of river is productive on streamers as well. Once you get down to the flat just above the last island, pay close attention; there are probably rising fish here. Finally, when you get the Fun Farm backwaters, there will almost certainly be rising fish. You can throw everything in your box at this guys, but it seems best to do a really small spinner pattern. (a size 20 trico spinner looks darn similar to a size 20 baetis spinner.)

Henry's Fork Realtime Stream Flow

Lower Henry's Fork Hatch Chart

Upper Henry's Fork Hatch Chart

July 9, 2015 - East Idaho Fly Fishing Report

As we move into the heart of the summer, we are looking at fabulous fishing all around the area!  The big news to date is the arrival of the Salmonfly on the South Fork.  It has buzzed through the canyon and into the upper section of the river bringing large numbers and size of fish to the boats of anglers.  PMDs (mayflies) are also moving around all of the riffles and the fish are moving around in huge numbers in the shallow waters of these drop-offs.  

The Teton Rivers is also a major player now that the water has dropped to its normal levels and the fish are eating PMDs, caddis, yellow sallys and most terrestrial patterns like ants, beetles and even hoppers!  

With the passing of July 1st, all of the major tributaries flowing into the Teton River opened, including Bitch Creek, Connant Creek and Pine Creek.  Easy fishing here guys:  hoppers, stimulators, caddis and PMDs are the ideal offerings in these smaller waters.  

The Henry’s Fork has been slow due to higher water levels and we should look to see this fishery improve as the summer progresses.  

As always, please be safe and get out there and enjoy the wonderful fishing season!  Call or come by any of our locations to get the latest info, bugs and gear!  Thanks from the Crew at Three Rivers Ranch!

July 1, 2015 - East Idaho Fly Fishing Report

There has been a pretty big heat wave across the entire Northwest.  Here in 'our neck of the woods' the best chance at fish are in the morning and late afternoon.  You can sill have a great day fishing mid-day.  Here are some other details about the specific rivers around here:

The South Fork of the Snake is fishing really well!  The stoneflies are everywhere!  We’ve been using Golden Stones, Salmon Flies, & Yellow Sallies.

Henry's Fork of the Snake River

Overall, fishing is still outstanding on the entire Henry's Fork.  Flows out of Island Park have been steadily increasing over the last week to about 1700 cfs.
Henry's Fork - Below Ashton:  We’ve been catching fish on Caddis & PMD's.  Green Drakes are slowing down below Ashton.  You can use Golden Stone, Chubby Chernobyl, zebra midge, pheasant tails, PMD's & caddis..  

Henry's Fork - Ashton to Island Park:  Green drakes in the morning, Grey & Brown in the evening.  Throughout the day yellow sallies, golden stones, & flavs (WR to Ashton).   As always, nymphs and streamers will pull fish in.

Teton River

The Teton has been fishing awesome as weel for 3-4 days, so it should continue.  The water is lower and clear.   We've been using PMD's, Caddis,& Yellow Sallies.


May 11, 2015 - Fly Fishing Report in Eastern Idaho

As spring progresses, we are seeing better fishing throughout the region.  The big news is on the Henry's Fork where we are seeing Salmonfly adults beginning their journeys.  The water on the Henry's is a bit higher and off-color but the Big Bug is showing a few weeks earlier than average.  Rubber legs, stonefly nymphs and dark Caddis adults are doing well with a few anglers finding fish to eat the adult Salmonfly dries.  Look for the Salmonfly fishing to become explosive during the next week to two weeks.  

     Teton Valley's local river, the Teton River, is beginning to see the first effects of spring runnoff.  The water is off-color and high, which is to be expected in this early spring season, but the fish are eating various presentations from Caddis and Baetis to bright streamers.  

     As always, I do mention one of my favorite rivers, the South Fork of the Snake.  It is still running high, around 12,500 or so, as water demands from farmers downriver increase.  The water is still very cold (around 43 to 44 degrees F) and the bugs have not yet begun to do their thing.  As the rainbow spawn comes to a close, look for these fish to become actively chasing streamers and eating nymphs until the warmer weather comes.  Come in to any of our five locations for up-to-date advice and gear and as always, the Crew at Three Rivers Ranch appreciates all of our customers!




April 28, 2015 - East Idaho Fly Fishing Report

Our fishing season is kicking off with a bang ladies and gentlemen!  The hot spot has been the Henry's Fork with drifters and wade anglers seeing clouds of caddis flies buzzing the area. Most are reporting a darker-bodied caddis that hints at the Mother's Day bug, but the bodies are not as big - size 16 and 18.  The water clarity on the Henry's is a bit off-color, but that is to be expected this time of year.  The upper sections from Warm River down have been producing large fish on both streamers and caddis so make sure you have both.  Note to self:  this angler has seen phone photos of crawling Salmonfly nymphs here as well during the past week - welcome to an unusually early season!

     Our local Teton River has also been producing large fish and many numbers as well.  Caddis flies are also being seen in the tea-colored water and fish are regularly rising to these presentations.  Look for an early run-off on the Teton this year, and wait for an early explosion in mid-May.

     As always, we try to elaborate on the South Fork as well.  The water levels have been manipulated heavily over the past two weeks (you can thank the farmers) with flows now hovering at 12,300 cfs.  However, the water temperature has spiked to over 44 degrees F and the rainbows are doing their thing in the flats and on redds.  Still cold, I know, but streamer fishing and nymphing eggs has been very productive in the slower water.  We appreciate all of our customers and welcome you to stop by any of our locations for the recent updates and needed gear. Thanks from the Crew at Three Rivers Ranch!

March 23, 2015 - East Idaho Fly Fishing Report

     As a dismal winter for the skiiers comes to an end, this winter has been fairly wonderful for us casters!  The lack of snow in our part of the state has allowed driftboaters access to the three major rivers in our area and it has been a very strange, yet fishable experience.  

     The Henry's Fork has been great for us during the past two months with floaters doing sections from Warm River down to St. Anthony and beyond.  Wading fishing has also been very productive from Vernon Bridge to Chester Dam to St. Anthony with nymphing and streamer fishing being the norm.  Small zebra midges of all colors, red and pink worms, rubberlegs and streamers of all sorts have been the go-to patterns to move these fish.  The Henry's Fork below Warm River also gets the jolt of warmer water and it has helped fly anglers to make reluctant fish turn their heads.  During the warmer weeks in the past month, anglers have also seen sporadic BWO hatches in the afternoons, so make sure to have a selection of adult midges and BWOs in your boxes!

    Normal in this time of year, the South Fork of the Snake has been decent, however, the water temperature is still low with this reporter's venture through the canyon on Sunday showing water temps from 38 degrees to 40 degrees.  Surprisingly, (or not, considering this early year) we noticed several beds being brushed off, so let's look toward to an earlier spawn in 2015.  

     As for the Teton River, it is actually fishing well!  During the warm weeks of February, we did see a run-off, but the water is turning clear and fishing nymphs and small streamers has produced.  With all of our winter fishing, please don't over-think the bugs you are throwing.  More casts and less consideraton of 30 different patterns will reward most fly casters now.  Please visit any one of our locations to get the up-to-date info on where to go and what to throw!  The Crew at Three Rivers Ranch appreciates all of our old and new customers, come visit us!

Teton River Fishing Report

As for Teton Valley's local jewel, the Teton River, this arctic weather has all but froze most of it for now. Many of the local fly anglers that fish the Teton River have put their flyrods down and picked up the shotguns as the duck and waterfowl season has been excellent. There is a ton of public access to shoot, and it has been the most enjoyable sport for the Teton River Basin for almost two weeks. Since this year was extremely cold and early, we should expect the Teton River to break up a bit and offer more excellent winter fishing in the weeks to come. As always, feel free to contact any of our five locations for the updates on your favorite watersheds in Wester, Central and Eastern Idaho. The amazing crew at Three Rivers Ranch appreciates our customers and visitors - get out there and have fun! Want to go with a TRR guide? Give us a call and check for availability. Our phone number is: (208) 652-3750. Or email us.

South Fork of the Snake River Fishing Report

Unless you have been in Mexico recently enjoying beautiful weather, you would know that mid-November has seen arctic temperatures due to the Alaskan push, and many anglers have been on the sidelines watching football and gettng ready for ski season. However, with the temperatures rising during the Thanksgiving week, many anglers are again enjoying great fishing in our Eastern Idaho rivers. The South Fork has been dropped to just over 900 cfs. Many people are still floating (and now beginning to be able to walk and wade). Nymphs, streamers, rubber-leg stonefly nymphs and zebra midges have been producing. Want to go with a TRR guide? Give us a call and check for availability. Our phone number is: (208) 652-3750. Or email us.

Henry's Fork Fishing Report

Unless you have been in Mexico recently enjoying beautiful weather, you would know that this past week has seen arctic temperatures due to the Alaskan push, and many anglers have been on the sidelines watching football and getting ready for ski season. However, with the temperatures rising during the past few days, many anglers are again enjoying great fishing in our Eastern Idaho rivers. The Henry's Fork has seen rather prosperous fishing, although the water level is very low, which is normal for this time of year. Patterns will be nymphs, streamers, midge, and BWO's. Although many fly anglers are reluctant to believe that nymphing season is here, it will be the most productive way to catch these fish, which are now honkering down close to the bottoms of these rivers where there is much less friction and the fish are able to expend less energy holding in the water column of their choice. Brown trout are now spawning. Let's respect the next generation and hold off on fishing the redds. Want to go with a TRR guide? Give us a call and check for availability. Our phone number is: (208) 652-3750 or email us.

Boise River Fishing Report - TRR's Eagle / Boise Fly Shop

The "in-town" section of the Boise River is running at 250cfs and is at 50 degrees. BWO’s, Midges (disco & zebra), Copper johns, Hares Ears, Rubber Legs. If you're planning on targeting Steelhead. Try swinging streamers and dead drifting larger nymphs, it can be deadly! Also, get your larger nymphs ticking along the bottom. Finally, make sure to get a steelhead permit if you plan on targeting them! Have fun! For more information on fly fishing conditions in this area, contact TRR Outfitters at 60 South Eagle Road, Eagle, Idaho 83616. Call (208) 939-6065 or email us.

Late July Fly Fishing Report for Eastern Idaho

The Henry’s Fork continues to produce world class fishing as we enjoy these last days of July. In the canyon sections and Last Chance, you’ll want to try golden stone patterns, PMD’s and spinners, nymphing and, various stonefly patterns are also working. 

Warm River has been a wonderful spot to walk up and down with Sally’s still lingering, as well as the Golden Stone still doing its thing. From Warm River to Ashton, the fishing continues to be great, this is what we love and appreciate about this amazing river.

We have it on good authority that the lower sections of the Henry’s Fork are still doing well, with some sightings of several different caddis varieties coming in. Try Sally’s, caddis, PMD’s, golden stones. Below surface try nymphs, and hopper- dropper combos. If you haven’t already, check out this great article by senior guide, Cliff Weiss on fishing droppers.

The Teton River has finally turned on and should be spectacular throughout the upcoming weeks!  The water has lowered and cleared. Among the PMDs and Yellow Sally’s, the report we are hearing is that big foam and hopper patterns have been producing better fish as this week winds down.  Look for a water drop over the next weeks which will make the walk-n-wade scene turn to all motors forward. If you like to walk and wade, consider the tributaries of the Teton, such as Bitch Creek and Conant Creek. These sections have been equally as exciting!

On the South Fork right now from the dam to the confluence of the Henry’s Fork the fish are stacking up in the riffles. Try PMD’s, and if the fish aren’t taking that, we’re starting to see Yellow Sally’s- give them a try. In the morning and evenings, it’s caddis, caddis, caddis! Also, just a little tip, with all the food available right now, you’ll want to practice some patience.  Wait, for the fish to actually take your fly before setting the hook. That’s how you’ll get ‘em!

brown fish


Photo: Three Rivers Ranch Guide, Sam Robinson shows off a sweet Brown caught by his client on the Henry's Fork.

Information provided by: Three Rivers Ranch guide, Jen Cornell and Driggs Fly Shop Guru, Dave Heib





Eastern Idaho: Mid-August Fly Fishing Report (Yes, it's good!).

Yes, it’s mid-August already.   With afternoon temperatures reaching into the mid-80’s and cool evenings dropping into the mid 40’s, it is mother nature’s perfect balance for keeping our rivers and lakes at the optimal temperatures for active fish.

Heading to the South Fork of the Snake River for a day of fishing or extending it into two days with an overnight camp trip, is well worth your time.  The water level coming from the Dam is 10300 CFS, and 5890 CFS at Lorenzo, which indicates above average water flow for this time.  (What does that mean? More water equates to optimal water temps, which equates to prime aquatic hatches, which then equates to really good DRY FLY fishing)!  You will not be disappointed on any stretch of the South Fork right now.  Fish are feeding in the riffles on PMD’s, as well as terrestrials.  The grasshoppers are finally out and they are large!  The classic hopper/dropper combination is working well, but try a twist on that and use a hopper with a pmd cripple attached and watch them choose which fly to eat!

Henry’s Fork and Teton Rivers are also both worthy of your time and attention.  Now is the time for fishing the upper Henry’s Fork with grasshopper and ant patterns. Here’s a hot tip for fishing the Railroad Ranch in the next few weeks; the fish there become accustomed to seeing flying ants often and will take your ant pattern even if you are not seeing the ants on the water.  Lower down on the Henry’s is some of our favorite water and we are seeing the big browns eat grasshoppers.  River flows are average for this time of year, with the Box Canyon a little higher than average, and much better fishing due to cooler than average water temps.

The Teton River is exploding with rises in the Teton Valley area. Brookies, Rainbows, and Cutthroat are all being caught on PMD and Caddis dry fly patterns. As you move down river, the canyon section is scenic and wild, just like the fish.  We have experienced guides to take you through this whitewater section of the Teton, fishing with grasshoppers and floating through whitewater makes it a magical day.  Even further down river, the Teton River is clear and the fish are eating grasshoppers, pmd’s, and caddis.

Ever fished for GULPERS on Hebgen lake?  If hunting for rising, cruising fish, sounds good to you, now is the time to check it out!  Bring a box full of parachute adams and nothing more.

Walk and wade spots in the area are not to be overlooked.  Often times hiring a guide means floating in the boat.  We encourage you to take a walk and wade day with our experienced guides in Yellowstone, Robinson Creek, Warm River, Falls River, to slow the pace down, stand in the water, and sight fish to wild trout, for an experience of a lifetime.

Want to go with a TRR guide?  Give us a call and check for availability.  Our phone number is: (208) 652-3750     or email us.


Henry's Fork: Fly Fishing the Salmonfly Hatch on the Snake River (& When It Will Happen).


There are few insects that create so much buzz, anticipation, and sheer excitement as the Salmonfly.  The Salmonfly is the largest stonefly in our rivers; some adults and nymphs approach 3 inches in length.  It’s not only the sheer size that makes the Salmonfly unmistakable, but it’s also the orange markings on their stomachs.


The unique thing we enjoy about our location is how the population of Stoneflies emerges on a river system as the Henry’s Fork.  Typically, Salmonflies will emerge from the furthest point downriver, and then work their way upstream.  However, due to the regular flow and temperature of Warm River, Salmonflies will emerge a few days earlier on Warm River than the lower section of the Henry’s Fork.  This gives us a good idea that the Salmonfly hatch is underway.  We can then expect the hatch to begin on the lower section of Henry’s Fork and move up river towards Three Rivers Ranch and other upper sections.


The best way to fish the Salmonfly hatch is with a drift boat.  You can cover more water and also increase your chances of finding feeding fish.  It isn’t completely out of the question to wade certain sections; however, many fish move in close to the banks to feed.  So by using a drift boat, you eliminate the chances of standing where you need to be fishing.


Fishing the Salmonfly can be very frustrating and exciting all in the same.  Breaking a rod in frustration is not uncommon.  Many trout are a bit leery of seeing an adult Salmonfly floating.  It’s like seeing a 10-pound cheeseburger.  You’ll see a trout bump the fly, swim downstream, slap it again, and still refuse your fly.  Sometimes the fish is only waiting for a twitch of your fly.  If you size your fly right, just under the size of the naturals, you’ll even see a trout deny the natural for your imitation.


The winter, spring runoff, and general weather greatly affects the Salmonfly hatch.  This is what makes the hatch so elusive for so many anglers.  On a typical year, you can expect the Salmonflys to begin emerging in late May to Early June.  Again, that depends on many factors, but it’s a good estimate.


Fishing the Salmonfly hatch on the Henry’s Fork is something every angler needs to experience.  It’s challenging, elusive, and very worthwhile.


If you are interested in fishing the Salmonfly hatch, give us a call (800) 360-9051or This email address is being protected from spambots. You need JavaScript enabled to view it. starting around May 15th to check on the hatch.  Be sure to have your bags packed and sitting by the door!

2014 - Henry's Fork Salmon Fly Hatch Update:  We're expecting the hatch to begin in about 3 weeks (towards the end of May 2014)!  About the same time as our Teton Valley Fly Fishing Festival!  Mark your calendar!


Henrys Fork Salmonfly Hatch


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