Worley Bugger Fly Co-

The cool, early months of spring in the Central Washington Valley, are the beginning of a new fly fishing season on the Yakima River.  Known widely with its critics for its tempermental and demanding trout as well as its fast, high water flows most of the year, the Yakima River has now joined the ranks of the infamous trout rivers of the west. 

Here, you will experience some of the finest fly fishing the Pacific Northwest has to offer.  A bold statement, but one I stand by with over twenty five years of guiding experience on its waters. There is an exciting change taking place in the Yakima River Watershed that has been absent for over 5 decades.  Most fly anglers that fish its waters on a regular basis aren't even aware.

Driven entirely by the Yakima Indian Nation, restored returns of anadromous salmon stocks are vacillating some of the best trout fishing the state has to offer.  Each year, Spring Chinook, Sockeye and Coho Salmon are returning to the headwaters of the Yakima River, where they once profilerated the stream by the thousands.  You may ask, how do salmon returns correspond to trout fishing?  Here is how.


The enormous bio-mass of three uniquely different salmon, that had been absent from the Yakima for over fifty years are now impregnating the river and rejuvenating its overall health.  After the salmon spawn in the fall, the eggs, flesh and salmon fry are a massive food source not only for the trout and other fish species, but also for the aquatic invertabrates and other critters living in the watershed. 

The Yakima River, nows experience monolithic hatches of Stoneflies, Mayflies and Caddisflies throughout the year, unlike we have seen in past seasons.  Our finely finned, wild rainbow and cutthroat are growing in girth, as they take advantage of the plentiful food supply that is now abundunat. 

So with that now said, this paragraph brings me to the first major topic of the fly fishing season.  One of the most anticipated, aquatic insect hatches on the Yakima, known widely in the "dryfly freaks" fishing circles as the "Skwala" or "Skwalla" Stonefly. 

These post winter stoneflies are becoming legendary and perhaps are beginning to over shadow their May predecessors, the giant Salmonfly.  Even when the most novice of fly fishermen hears the term "Skwala" they squirm with anticipation at the chance to fish this magical time.  Perhaps, the legend and the hype have some fertility?

This post winter stonefly, has two uniquely different life cycles and both are of major importance to trout as well as the fly angler. Understanding the science of both cycles, should increase your catch percentages and your fly fishing game on the stream.  To understand them, you first must study their behavior.

The Skwala nymph of course is a sub-aquatic creature and they begin their migration below the surface of the water.  Crawling slowly along the substraight, where the human eye has little or no conception.  Here, they travel in vast groups in very specific form, usually under the cover of darkness or during low light conditions. Like all of Mother Nature's creatures, there is strength in numbers and the need to procreate is as strong in them as it is in us.  Their destanation is the Yakima River stream banks.

Like other freshwater species of fish, water temperatures are one of the preliminary factors of inducing fish into spawn.  As late spring arrives and the waters begin to warm, female Smallmouth, ripe with several pounds of roe in their belly, begin looking for a mate.  Once they have found a proper suitor and the ideal nesting grounds, a small spawning bed is prepared.  Once the nest is arranged, the female will lay thousands of eggs.  Her duties within the natural order of procreation are now complete, and unlike most animals in the natural world, she abandons her confidant, the young and the nest completely. 

When you look at the big picture, the stonefly migration is really no different then any other animals' migration.  When I am asked about "Skwala" fishing on the Yakima, the conversation always seems to head right into the meat of the topic.  I like to get customers or clients thinking, after all isn't that what fly fishing is?  The thinking man's fishing. I often refer to the massive migration of Wildebeest that travel across the desert of the Serengeti to the banks of Mara River.  If you grew up in the seventies then you are familar with the TV show, "Wild Kingdom" . 

With host Marlin Perkins narrating, we witnessed this event unfold on the screen.  As these nomadic beasts approach the river banks, perhaps the most unforgiving of Mother Nature's creatures, the Crocodile waits in anticipation for them to begin crossing the river.  Once the stampede begins, the feast is set and Wildebeest begin their ascent knowing full well that traveling in numbers, increases the odds of proliferating their species. 

So in essence, the stonefly nymphs are in the same precarious situation.  As they travel their migration route, trout wait and stage in this specific areas to take advantage of the bounty Mother Nature is providing.  The key for the fly angler is finding these routes, because unlike the trail that is left by the massive herd of Wildebeest, the stonefly nymph leaves no trace.  Also, take into consideration, the overall factors the stonefly nymph may have to deal with as they move. Irregular stream flows, stream sediments and multiple obstacles as well as hundreds of hungry trout.  Much like their counterparts in nature, they prefer the path of least resistance.  An angler fishing from the bank, can distinguish these routes much easier than those traveling by boat.

By simply observing the river banks and kicking over rocks and other structures, you can unturn the nature of the migration and determine the directional path they have taken.  After years of fishing and reading a river, a trained eye can pick up the water types and these transition routes.

Typically December, January and February are the major migration times for the Skwala Nymphs. However, we do see changes every year, due to winter and water conditions. These are learned behaviors and habits and anyone that has spent years studying and observing it, will tell you the same tale. Any guide worth his weight, should be able to understand and explain it.

The link below contain a complete explanation on paper of the Skwala Stonefly migaration patterns.  You can download it freely if you like.  It was drawn up by our late fly fishing mentor and the first Yakima River fly fishing guide, Tim Irish.

Over time, the migration unfolds and the stonefly nymphs begin assembling in numbers along the shoreline.  Here, males and females interact and once conception has taken place, the egg laying female will begin her journey back to the water to deposit the thousands of eggs attched to her abdomen.

Balanced Stonefly Nymph-Skwalla Version

“In our family, there was no clear line between religion and fly fishing. We lived at the junction of great trout rivers in western Montana, and our father was a Presbyterian minister and a fly fisherman who tied his own flies and taught others. He told us about Christ's disciples being fishermen, and we were left to assume, as my brother and I did, that all first-class fishermen on the Sea of Galilee were fly fishermen and that John, the favorite, was a dry-fly fisherman.”  Norman Maclean, A River Runs Through It

Now, on to fly fishermen's favorite part. The majority of fly fishermen love to dry fly fish, most to a fault.  Watching a trout rise to a dry fly that you have presented is what propels the sport of trout fishing. I have to honestly admit, I am probably one of the biggest junkies out there.  However, stubborness can back fire on you and keep you in a stagnet learning curve that you may have a hard time over coming.  You need to get over it!  Nymph fishing is not bait fishing!  The majority of nymph patterns are tied with feather and fur.

As fly fishermen, we are tuned and trained to match the specific food source of fish.  Dry fly patterns that mimic adult insects are fun to fish. However, if the trout are keyed on migrating nymphs then convincing them to eat an adult can be futial.  If a "BigMac" was placed right in front of you, would you decline it for a different choice that you had to move to go get?  I would bet my next paycheck that the majority faced with this decision would devour the burger.  Remember, trout will begin eating under the surface of the water, before any surface feeding can occur, because that is where the lifecycles of most river insects begins.

Yakima River Skwala Stonefly AdultOne of the important aspects to keep in mind about this or most adult stoneflies activity, is the time of day. Stoneflies in adult form are most active during the warmest portions of the day and their activity is generally dictated by water and air tempertures.  This is a post winter stonefly that is present during the month of February, March & April. 

So, their peak adult activity levels are going fall in the afternoon. Cooler morning and night time lows this time of year are still considered to be in the winter range. Rarely will you see female stoneflies flutter in the air, across the river.  More times than not, they slowly emerge from the structure along the shoreline and crawl to the surface edges, where they drift along the current line and can begin their egg laying processes.

So, if you approach the river in the morning, most likely your day will begin working those migration routes with various stonefly nymph patterns.  As the day warms and you watch with a careful eye, you should have a chance to switch to a surface pattern and begin presenting a drag free presenation to those trout that are looking for adult Skwalas.  The fish are already stationed in the migration routes, so changing your water types and tactics is minimal...correct?.  The end of the migration route is typically the shallowest portion, so clear water conditions will dictate, a flawless presentation with a dry fly. 

The next biggest question I receive from clients is, "when is the Skwala fishing good"?  Here is the answer.  Much like any stonefly hatch, it's about timing.  What I can tell you from over thrity years of experience is when the game is on, be ready to go.  That mean's, when we annouce the Skwala fishing is on, drop everything and get to the river, especialy for Skwala fishing.  Why?  Because spring conditions can change from day to day, hour to hour.  Rarely, do we ever see river conditons remain optimal for weeks at a time, during the peak of the Skwala fishing.  It may be dynamite one day and the river a bloody mess the next.

Their emergence is predetermined in accordance with spring run-off and it happens during the months of February, March & April. So when the female adults start showing up on the water, it takes very little time for trout to adjust and begin recognizing them.  They have already been eating nymphs for weeks, perhaps months right.  The transition doesn't take long and they react within accordance of what the hatch dictates.

Most years, the river bounces back and forth between optimal flows and "blown out" conditions.  What I can honestly tell you is that the Skwala hatch occurs over a long extended period because of this fact.  When we see a change in river conditions, the stoneflies, both nymph and adult will stop their activity all together and will wait unitl improvements in flows have stablized.  Imagine the nymphs trying to move in flood stage conditions, when the river is bank to bank and raging at extreme flow.  Like other creatures, they hunker down and ride the storm out.  That is one of the reasons why, we see the hatch progress well into the month of April, especially in the Upper Yakima River above Ellensburg.  In late March & April, you can witness Skwala Stones, March Brown Mayflies and Blue Wing Olive Mayflies all coming down the same seam lines of the river.  It's an all out food blitz and of course, trout are eating a combination of food forms then and are distracted by the existance of the mayflies.

If good Skwala fishing is your target, look to the months of late February and March to be the prime months, when trout are stead fast and eatn' em.  Once the mayflies hatches begins in April, we find the attention of trout focus on a variety of food forms and not so much on just one.  The video above is from Skwala fishing in the Yakima River "Farmlands" in 2017 and was shot the first week of April.  Our flows in February and March were at constant flood stage, so the Skwala hatch was pushed out, which is fairly common. 

If Skwala fishing is on your target for early spring this season, this should give you a good idea of what you can expect.  Plan accordingly and if you are looking to fish the river with a WBFC guide, I would suggest getting your date down asap. 

Skwala fishing is very popular and it is also a time of the year, when our guiding rates still remain in at our post-season levels.


$325.00 per boat

INCLUDES: Flies, Gear If Needed, water

NOT INCLUDED: Valid Washington State Fishing Licenses, Discover Pass/Access Vehicle Pass, Gratuity

Rates Are Good From November 15th-To March 31st


$395.00 per boat

INCLUDES: Flies, Gear If Needed, water

NOT INCLUDED: Valid Washington State Fishing Licenses, Discover Pass/Access Vehicle Pass, Gratuity

Rates Are Good From November 15th-To March 31st

The WBFC Post Season trips will last on average between four to five hours per day, depending which section of the Yakima River you are floating. Payment must be made in full at the time of booking with a Visa or MasterCard.

Because of limited days during the post-season, cancelling of your reserved fishing day is not permissible during the post season.  WBFC reserves the right to reschedule the trip due to excessive weather or bad water conditions.  If WBFC does postpone your guided trip due to bad conditions and you are not able to reschedule, you forfeit your full payment. 

You may reschedule your date anytime during the post season, when open dates are available. However, if you choose to reschedule outside of the post season date which is permissiable under our policies, a remaining balance will be due.  Seasonal rate increases occur between March 31st and November 15th.  Please refer to our Guided Trip seasonal rates, if you are in doubt or not familiar with them.

WBFC is kicking the plastic water bottles in 2020.  You will need to bring your own tumbler or hydro flask on any of our guided trips.  WBFC Professional Guiding Staff will provide, clean, filtered drinking water for each guest.  A WBFC Hydro Flask can be purchased the day of your trip at the Pro Shop if you like.

Worley Bugger Fly Co

Worley Bugger Fly Co-