May 07, 2026

S8, Ep 31: Chasing Smallmouth: Brian Shumaker's Adaptations for Unpredictable Spring Weather

7 minutes

Episode Overview

The Articulate Fly's Pennsylvania Smallmouth Report returns with Captain Brian Shumaker of Susquehanna River Guides, delivering a timely mid-spring conditions update for the Susquehanna River system in Central Pennsylvania. This episode cuts straight to the practical challenge facing every Mid-Atlantic smallmouth angler right now: how to fish effectively when an extreme pattern of temperature swings — 80°F one day, back to the 50s by mid-week — is compressing and disrupting the spawn, locking fish down unpredictably, and keeping the frog bite from ever materializing. Brian, a veteran guide with over three decades on the Susquehanna, breaks down how he approaches these volatile conditions with clients, from the diagnostic logic of starting with yesterday's best fly and quickly reading fish mood, to the deeper strategic pivot of going subsurface on intermediate lines when topwater won't produce. He also touches on where the spawn currently stands — with the first wave already pushing some fish into early post-spawn funk — and what anglers can expect as conditions hopefully stabilize heading toward summer. For anyone planning time on Pennsylvania smallmouth water this spring, Brian's approach to grinding through difficult conditions with a rotating bench of swim flies and crayfish patterns offers both tactical and mental frameworks worth internalizing.

Key Takeaways

How to use yesterday's producing fly as a quick diagnostic starting point and pivot efficiently to Plan B when conditions have shifted overnight.
Why slowing retrieve speed and fishing deeper are the first two adjustments to make when dropping temperatures cause smallmouth to lock jaw.
How intermediate sink lines provide a versatile middle ground that keeps flies in the strike zone when topwater conditions are marginal.
When to rotate through a broad multi-pattern bench — swim flies, Half-and-Halfs, Clousers and crayfish patterns — rather than forcing a single presentation in unpredictable spring conditions.
Why crayfish patterns like the Clawdad are producing when stomach content checks confirm fish are actively keying on crayfish as a primary food source.
How the unusual spring temperature volatility in Central PA is producing an early post-spawn funk in first-wave fish while later-wave spawners are still active, creating a mixed-mood fishery that demands adaptable tactics.

Techniques & Gear Covered

Brian's current approach centers on intermediate sink lines as the primary tool for getting flies into the strike zone. From there, he runs a rotating bench of approximately a dozen patterns, starting with Clousers, swim flies and Half-and-Halfs and moving through the progression until something sticks — a systematic elimination approach that reflects hard-earned guiding experience in variable conditions. When temperatures drop and fish go passive, he leads with slower presentations before working up to more active retrieves. Crayfish imitations have been particularly productive, with Brian noting that fish are showing crayfish in their gullets on inspection — a data point that drives fly selection rather than guesswork. He specifically mentions patterns in the Clawdad-style that can be fished up off the bottom and animated to mimic a fleeing crayfish. Topwater setups remain rigged as a secondary option for afternoon sessions, with Brian noting that conditions like a sulphur hatch could still prompt fish to look up even in an otherwise subsurface day.

Locations & Species

The episode focuses on the Susquehanna River system in Central Pennsylvania, the fishery Brian has guided exclusively since founding Susquehanna River Guides in 1993. The Susquehanna is a fertile limestone river renowned for one of the strongest wild smallmouth bass fisheries in the eastern United States, characterized by rock ledges, wide shallow riffles and abundant crayfish and aquatic insect life. Target species is exclusively smallmouth bass throughout this report. The episode is recorded during the mid-spring spawn window, with Brian projecting that spawning activity on his water will wrap up around the third week of May and that some first-wave fish are already showing early post-spawn behavioral funk — while later-wave fish are still active and available. The unusual temperature volatility this spring is affecting fish behavior across the entire east coast smallmouth fishery, not just the Susquehanna, making Brian's adaptable mid-spring approach broadly applicable.

FAQ / Key Questions AnsweredHow do you adapt your fly fishing approach when spring temperatures swing wildly day to day?

Brian starts each session by testing what produced the day before — that gives a quick read on whether conditions have shifted. If that approach fails early, he moves to Plan B: slowing retrieve speed, going deeper and working through a systematic rotation of patterns until he finds something that matches the fish's current mood. The key is staying flexible rather than committing to a single technique.

What fly line setups are most effective for Pennsylvania smallmouth in cold or variable spring conditions?

Intermediate sink lines are Brian's primary tool right now, allowing him to keep flies subsurface without anchoring them to the bottom. Topwater rigs stay on deck for afternoon sessions as a speculative option, particularly when hatches are occurring. In colder conditions, he prioritizes slower patterns and quieter presentations before working up to more active swim fly retrieves.

Why are crayfish fly patterns so effective for spring smallmouth bass fishing?

Stomach content checks on the Susquehanna are showing fish actively feeding on crayfish, making imitative patterns a data-driven choice rather than a hunch. Patterns that can be fished up off the bottom and animated to simulate a fleeing crayfish — rather than dragged along bottom and snagged — are producing best because they remain accessible to fish holding at a range of depths.

When does the smallmouth spawn typically wrap up on the Susquehanna River in Central PA?

Under normal conditions, Brian expects spawning to be largely complete by the third week of May on his water. This spring's extreme temperature swings compressed the front end of the spawn but have also extended and complicated the overall picture, with first-wave fish already showing post-spawn behavior while later fish are still in the spawn cycle — creating a mixed-mood fishery that is more difficult to read than a typical spring.

What should anglers expect after the spawn in terms of fish behavior and fishing quality?

The post-spawn funk is real — fish that have completed spawning become temporarily lethargic and difficult to catch. Brian describes a brief early version of this pattern already affecting first-wave fish on his water. The good news is that once temperatures stabilize, fish typically come around quickly and the summer bite — including the anticipated frog bite and topwater action — can be excellent on the Susquehanna.