Spring Trout Fishing: How to Make the Most of the Best Season on the River
Spring is when fly fishing comes back to life. Runoff clears, water temperatures climb into the feeding range, hatches begin in earnest, and trout that have been conserving energy all winter start feeding aggressively to rebuild condition. It is the most anticipated season of the year for good reason. It is also one of the most variable, with conditions that can shift from blown-out muddy water to perfect clarity within a week. Here is how to approach spring fishing and make the most of it when the window opens.
Q&A: Spring Trout Fishing
Why is spring considered the best season for trout fishing?
Several things converge in spring that create excellent fishing. Water temperatures rising from winter lows into the optimal 50 to 65 degree range trigger aggressive feeding from trout that are replenishing energy after cold weather. Aquatic insect hatches begin in sequence, from midges and blue-winged olives through the first caddis and stonefly activity, providing abundant surface and subsurface feeding opportunities. Fish that have been locked in deep, slow water all winter move back into the riffles and runs where they are more accessible and more willing to eat. And on many rivers, the combination of ideal conditions and fewer summer crowds makes spring an exceptional time to be on the water.
How does runoff affect spring fly fishing and how do I work around it?
Runoff is the defining challenge of spring fishing in most regions. Snowmelt from higher elevations sends cold, often turbid water into rivers, raising levels and reducing visibility. High, off-color water is harder to fish but not impossible. During runoff, trout move to the edges of the river where current is slower and food collects along the banks. Larger, more visible patterns in darker colors give trout something to key on in reduced visibility. Streamer fishing in these conditions often outperforms nymphing because the larger profile is easier for fish to find. Wait for the river to drop and clear before expecting consistent nymph and dry fly fishing.
What hatches should I expect in spring?
Spring hatches follow a general progression tied to water temperature. Blue-winged olives are typically the first significant dry fly hatch of the year, emerging on overcast, cool days as early as February or March on some rivers and continuing through May. Caddis begin hatching in late spring as water warms, with the first caddis activity often overlapping with late BWO hatches. Stoneflies, particularly yellow sallies and golden stones, come into play on freestone rivers from late April through June. Pale morning duns begin on many tailwaters and spring creeks in May and June, overlapping with the end of BWO season and the beginning of summer hatches.
Should I nymph or fish dries in spring?
Both, sequenced through the day. Spring mornings are often cool, with water temperatures at their lowest point before afternoon warming. Nymphing is most productive in the morning when fish are less likely to be rising and feeding subsurface. As afternoon arrives and water temperatures climb a few degrees, hatches become more likely and trout move toward the surface. Watch for the first rises and transition to dry fly fishing when fish are visibly eating on top. A dry-dropper rig bridges the gap, giving you a chance at both surface and subsurface feeders during the transitional window between morning nymphing and afternoon dry fly fishing.
What is the best approach for reading spring water conditions?
Spring water levels change quickly and what fished perfectly yesterday may be unfishable today after overnight rain or a warm spell that accelerates snowmelt. Check flows on a river gauge app before driving to the water. Ideal spring conditions are when flows are dropping after a high-water event and visibility is returning to four to six inches or better. Rising water after rain is generally harder to fish than falling water at the same level. Learn the normal spring flow range for your home river and fish it on the way down from high events rather than trying to fish through the peak.
Spring Fly Picks
The essential spring dry fly. BWO hatches on overcast spring days are some of the most reliable and fishable events of the year. Carry sizes 18 through 22 and be on the water when the clouds roll in.
As caddis season begins in late spring, this tungsten caddis nymph earns its keep as both a larva imitation and a general attractor. One of the best-reviewed patterns in the shop and a spring staple.
Black Sparkle Stone - Tungsten
For high and slightly off-color spring water where a heavier, more visible nymph reaches the bottom and gets noticed. A strong anchor fly during runoff conditions and early season pocket water fishing.
How to Fish Through Spring Conditions
High and Off-Color Water
Do not skip the river just because it is running high and brown. Move to the edges. Trout in high water abandon the main current and hold in the softer water along the banks, behind points of land, in backeddies, and in the sheltered pockets behind large rocks that stick above the surface. Cast along the seam where fast main current meets the slower bankside water and let a larger, darker nymph or streamer swing through that transition zone. High water fishing is active and often rewarding for anglers willing to adapt rather than wait for perfect conditions.
The Clearing Window
The days when a river transitions from high and murky to dropping and clearing are often the best fishing days of the entire spring. As visibility improves and levels drop, trout that have been pushed to the edges return to their feeding lies in runs and riffles, and they feed aggressively. A river at four to six inches of visibility and dropping is a prime fishing opportunity. Nymph through the productive runs with confidence, because fish are actively replenishing energy after the stress of high water. These windows can be brief. Take advantage of them when they appear.
Morning Nymphing and Afternoon Dries
Establish a spring routine that accounts for the daily temperature cycle. On the river by 8 or 9 in the morning with a nymph rig, covering the runs and riffles where trout are feeding subsurface before the day warms. By early afternoon, when temperatures have climbed and hatches are most likely, switch to a dry fly or dry-dropper setup and focus on the rises that start appearing in the tail-outs and seams. Stay late if a BWO or caddis hatch develops in the cooler late afternoon. Spring days that begin with nymphing and end with dry fly fishing are some of the best days the sport offers.
Finding Fish After Runoff
After a significant runoff event clears, trout redistribute throughout the river as flows normalize. Do not assume they are in the same spots as before the high water. Check the inside edges of bends where sediment has deposited, new gravel bars that may have formed, and any structure that was deposited or rearranged by the high flow. Rivers rearrange themselves in runoff, and the fish rearrange with them. Take an exploratory approach after high water and cover more water than usual until you locate where the fish have settled.
Spring is the reset button the river presses every year. After winter slows everything down, spring brings the bugs back, the fish back to their feeding lies, and the anglers back to the water with the season still entirely ahead of them. Show up ready to adapt to whatever the river is doing and you will find the fishing that makes spring the most-anticipated season on the calendar.