S8, Ep 23: Low Water Chronicles: Matt Reilly on Pre-Spawn Smallmouth Strategies and Seasonal Shifts

Episode Overview

In this Southwest Virginia Fishing Report on The Articulate Fly fly fishing podcast, host Marvin Cash checks in with guide Matt Reilly for a timely spring conditions update. With pre-spawn smallmouth season winding down under extreme drought pressure — flows running at roughly a fifth to a quarter of seasonal averages — Matt breaks down how he's adapting tactics on the water in real time. Rising water temperatures, driven by a stretch of days pushing into the upper 70s and near 80°F air temps, have forced the bite to shift well ahead of the typical photoperiod-driven spawn timeline. The result is a low, clear-water pattern that demands the kind of finesse approach more commonly associated with late summer than early spring. Matt details his pivot to smaller, slimmer, more natural-colored baitfish imitations — CK Baitfish, his buddy Roger's Rump Shaker and bigger Murdich Minnows — after watching the bite transition linearly away from the large 6–7 inch chartreuse-and-orange profiles that were working earlier. He also walks through his line and leader setup adjustments for clear, pressured conditions: a clear-tip intermediate seven-weight line with a leader running closer to seven feet. With the pre-spawn window for Matt closing around mid-April, this episode is essential listening for anglers planning pre-spawn smallmouth trips or trying to understand how low water conditions affect the spring streamer bite.

Key Takeaways

• How to recognize when rising water temperatures are pulling smallmouth bass out of the pre-spawn window prematurely and why adapting quickly matters.
• Why downsizing to smaller, slimmer, more natural-colored baitfish streamers outperforms big profile flies when Southwest Virginia rivers run low and clear.
• How a clear-tip intermediate line paired with a longer (approximately seven-foot) leader helps generate strikes from wary pre-spawn smallmouth in bright, low-water conditions.
• When to prioritize early and late windows during high-sun days on low, clear smallmouth rivers, mirroring the approach used for pressured trout.
• Why water temperature is the leading indicator for pre-spawn smallmouth behavior, and how flows far below seasonal averages can affect the entire spring bite calendar.

Techniques & Gear Covered

Matt Reilly's approach to low, clear pre-spawn conditions centers on intermediate-line streamer fishing with a deliberate reduction in fly size and profile. He described fishing a seven-weight rod with a clear-tip intermediate line paired with a leader he's extended to roughly seven feet to add distance between the line tip and the fly. On the pattern side, Matt has landed on smaller baitfish imitations in the 4-inch range: the CK Baitfish, the Rump Shaker (a slimmer profile pattern from his friend Roger) and bigger Murdich Minnows are his current go-tos. He's deliberately stepped away from the larger 6–7 inch profiles in brighter chartreuse and orange that were effective earlier in the pre-spawn, confirming through daily observation that going bigger at this stage does more harm than good. Color selection has shifted toward more natural, subtle tones, with early-morning and late-evening windows providing the best action on sunny days — a strategy that mirrors pressured trout streamer fishing logic.

Locations & Species

This report covers Southwest Virginia's smallmouth rivers during the late pre-spawn period, with Matt fishing these waters daily as a full-time guide. No specific river names are discussed in this episode, but the conditions Matt describes — flows at roughly a fifth to a quarter of seasonal average, water temperatures sliding into the upper 50s and threatening to breach 60°F ahead of the photoperiod-driven spawn — apply broadly across the region's smallmouth fisheries. The target species is pre-spawn smallmouth bass, with Matt noting that the fish are still actively feeding on baitfish imitations despite compressed and technically demanding conditions. The seasonal context is critical: the window is narrowing fast, with Matt expecting the prime pre-spawn bite to close soon, and booking availability for this phase of the year is essentially gone.

FAQ / Key Questions AnsweredHow do you adjust your streamer setup when Southwest Virginia smallmouth rivers run low and clear?

Matt drops to a seven-weight rod with a clear-tip intermediate line and extends his leader to approximately seven feet. The clear tip reduces line visibility, and the longer leader creates more separation between fly line and fly, both of which help generate strikes from wary fish in bright, pressured conditions.

What fly patterns and sizes work best for pre-spawn smallmouth in low, clear water?

Matt has shifted to smaller baitfish imitations in the 4-inch range — the CK Baitfish, the Rump Shaker and bigger Murdich Minnows — in more natural, subtle colors. He's moved away from the larger 6–7 inch chartreuse and orange profiles that worked earlier in the season, noting through daily observation that oversized flies are counterproductive once conditions tighten up.

How does water temperature affect pre-spawn smallmouth behavior in Southwest Virginia?

Water temperature is the primary driver. When temps push into the upper 50s and approach 60°F well ahead of the photoperiod that normally triggers spawning behavior, it disrupts the typical pre-spawn feeding pattern. A stretch of near-80°F air temps compresses the entire spring calendar, potentially ending the traditional pre-spawn bite earlier than normal.

When is the best time to fish for smallmouth in low, clear conditions?

Early morning and late evening are the most productive windows on sunny, bright days when rivers are running low and clear. Matt draws a direct parallel to trout streamer fishing, where high-sun midday conditions tend to shut down aggressive behavior on clear water.

What does extremely low flow — well below seasonal average — mean for pre-spawn smallmouth strategy?

Low flows force fish into tighter, more predictable holding water and demand a more cautious approach overall: smaller flies, more natural colors, quieter presentations and longer casts. Matt notes that fish are still catchable, but the angler has to commit to finesse tactics rather than the aggressive power-fishing approach that works when rivers are full and colored.

Related Content

S8, Ep 16 - The Seasonal Shift: Matt Reilly Discusses Spring Fishing Strategies in Southwest Virginia

S8, Ep 9 - Ice, Snow and Musky: Navigating Winter Fishing in Southwest Virginia

S7, Ep 19 - Weathering the Winds: March Fishing Insights and Pre-Spawn Strategies with Matt Reilly

S7, Ep 1 - Winter Fly Tying and Pre-Spawn Tips with Matt Reilly

S6, Ep 33 - Southwest Virginia Fishing Report with Matt Reilly

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