Delaware River Smallmouth Bite Building as Flows Run Lean

What's biting

What's next

If the pattern Old School Outdoors is describing holds, expect Delaware River smallmouth fishing to keep building through the coming days rather than fade. The shop already called the bite good, with more improvement expected as July settles in, and a low, lean flow around 32.8 cfs at USGS gauge 01408000 generally concentrates smallmouth around structure such as eddies, seams, and the deeper holes anglers have had to work harder to find with the water down. Anglers willing to walk stretches and target those pockets should see steadier action into the weekend.

Catfish should stay a reliable option in the same stretch; the shop noted catfishing has also been good, and that species tends to hold up well through low, warm-water stretches when other bites get tougher.

Largemouth bass are the wildcard worth watching. Dow's Boat Rentals reports fish keying on shadow lines in the early morning and late afternoon on the bigger lakes now that largemouth season is open, with recently cut and sprayed vegetation concentrating remaining fish close to structure. That shadow-line pattern typically tightens as days get hotter and sun angle steepens, so expect the best largemouth windows to compress into the first and last couple hours of daylight over the next several days.

JB Kasper's read is the most useful directional signal here: June brought 90-degree days mixed with lows in the 50s and a forecast that would not cooperate, on top of drought and below-normal water. He expects July to settle into the more predictable Dog Days pattern anglers count on, which typically means calmer, more consistent topwater windows early and late in the day rather than the up-and-down conditions of the past few weeks. If that stabilization arrives as expected, look for topwater and shallow-structure bites to sharpen through the week rather than the coin-flip fishing June produced.

Crappie fishing has slowed per the same report, and there is no signal in hand pointing to a near-term rebound, so keep expectations modest there for now. With flow already running low and no rain event reflected in the current gauge reading, anglers should plan around continued low, clear water rather than a flush of fresh flow, and target the deeper, shaded, or vegetated holds that are concentrating fish under these conditions.

Context

This stretch of the Delaware River corridor is coming off an unusually choppy June. JB Kasper described a month of 90-plus-degree days mixed with lows in the 50s, an unreliable forecast, and drought conditions that left the river running below normal, a combination that made for difficult, inconsistent fishing rather than the steadier pattern anglers typically get this time of year. Old School Outdoors confirms the low-water read directly, noting the river was still running below normal even after late-month rain, which lines up with today's lean 32.8 cfs reading at USGS gauge 01408000.

On the positive side, the smallmouth and catfish bite in that stretch is described as already good and trending toward better, which suggests the fishery is adjusting to low-water conditions rather than shutting down, a pattern that tracks with how Delaware River smallmouth often respond to reduced flow by concentrating in predictable holding water. The crappie slowdown Old School Outdoors mentions is consistent with a typical post-spring transition as that species moves off the spawn and becomes less predictable through summer.

There is no direct year-over-year comparison in the available reports, so it is hard to say definitively whether this is an early, late, or on-schedule transition into summer patterns. The clearest signal is JB Kasper's expectation that July will bring more stable Dog Days conditions after a genuinely erratic June, which several shops in the network echo when pointing to July as typically the start of deeper, structure-oriented summer fishing for species like smallmouth. Anglers should treat this as a season currently behind its usual rhythm but expected to normalize.