To control a swung fly in high, fast water, size the belly of your line to the current instead of trying to remove it. The belly is the downstream bow the current pushes into your fly line, and it is what pulls the fly across the run and swims it broadside in front of a steelhead. A bigger belly swings the fly faster; an upstream mend lifts the belly and lays it back upstream of the fly, which slows the swing and lets the fly sink. On a heavy fall flow, mending for steelhead is one firm upstream mend as the line lands, then steering the swing with the rod.
Make One Mend, Then Steer With the Rod
In big water, mend less and steer with the rod. Each mid-swing mend risks a sudden jump in the fly right when it is in front of a fish, and a following steelhead feels that hop and backs off. Make one deliberate mend as the line lands, large enough to move the whole sink tip and head, to set your depth and swing angle. Then manage the swing with the rod: lead the fly, with the rod tip pointed slightly downstream of it, to hold it broadside, and reach the rod toward the far bank to shed belly and slow the fly without another mend.
Two more moves slow the swing further. A steeper casting angle, more across the current toward straight out, swings the fly slower and sinks it deeper. Wading farther out toward the fast center current shortens the distance to the lie and slows the fly through it.
Where Steelhead Hold in High Water
As a fall river rises, steelhead slide off the mid-river lies and hold in the soft water: the inside seams of big bends, flooded grass and brush, and the slack right against the bank. In high, dirty water the fish sit higher in the watershed and tighter to the edges, so a short line swung to the near seam is often the productive cast. Fish an unweighted Intruder or marabou pattern on that soft inside water so it swims to the edge without snagging, and save weighted flies for digging through deep slots.
Wade in to your knees and look down; if you can still see your feet, the run is fishable. About a foot of visibility is the practical floor for swinging, and below roughly six inches it is better to move up to a clearer tributary or wait for the drop. Given a choice, fish the falling side of a rain event, when the fish have settled into new lies and clarity is improving.
Match Swing Speed to Water Temperature
Let water temperature set how fast you swing the fly. Steelhead are active from about 45 to 58°F and most aggressive around 50 to 55°F. In September and October, tributaries often sit in the mid-40s to low 50s, and fish in that range hold in faster water and will chase an active swing. As the water cools into the upper 30s and low 40s later in the fall, the fish drop back to slower water and their strike window narrows, and a slow, controlled swing becomes the better call.
Gear for High, Off-Color Water
Run a 7- or 8-weight Spey or switch rod, or an 8-weight single-hander, with a 500- to 575-grain Skagit head and an interchangeable sink tip. A 10-foot T-11 covers medium depth and a 10-foot T-14 gets down through deep, fast, turbulent water. Keep the leader short, three to four feet of 12- to 16-pound fluorocarbon, so the fly does not ride up above the tip. For flies, go big, dark, and high-contrast: a black or black-and-blue Intruder up to five inches, with an orange, pink, or chartreuse accent for visibility in the stain. In heavy color, add profile and contrast before you add weight, since the fish has to find the fly in the stain.
FAQ
What sink tip should I use for high, dirty water steelhead?
Use a 10-foot T-11 for medium depth and a 10-foot T-14 for deep, fast, turbulent water, both behind a 500- to 575-grain Skagit head. Those two tips cover most high-water conditions. Get the fly down with tip weight rather than a heavily weighted fly, which snags as it swings toward the shallow edge.
How do you slow down a swing in fast water?
Cast at a steeper angle across the current, make one upstream mend as the line lands, and lead the fly with the rod. Wading farther out toward the fast center current also slows the fly through the lie. Match the speed to the temperature: colder water calls for a slower swing.
Where do steelhead hold when the river is high and dirty?
They hold in the soft water: inside seams of big bends, flooded margins, grass and brush lines, and tight against the bank where it breaks the current. In high water they hold close to your own bank, so fish the near seam before wading out to reach the far side.
Is a blown-out river still worth fishing?
Often, yes. If you can see your feet standing in knee-deep water, the run is fishable, and about a foot of visibility is the practical minimum for swinging. Below roughly six inches, move up to a clearer tributary or wait for the water to drop.
Should I fish rising or falling water?
Fish the falling side of a rain event when you can. On rising water the fish are unsettled and moving; on falling water they have settled into new high-water lies and improving clarity gives them more time to react to the fly. The first day a thin run returns to fishable depth can hold a lot of fish.
