Catfish and post-spawn bass signal prime summer fishing on PA rivers

What's Biting

What's Next

With water sitting at 73°F, Pennsylvania's major river systems are entering the heart of early summer. For catfish anglers, the Delaware River record — a 36.2-pound flathead taken on cut gizzard shad in 17 to 23 feet of water on June 1, per Wired 2 Fish — signals that flatheads on the Susquehanna and Allegheny should be settling into seasonal ledge-feeding stations. Anchor up on slow-moving river bends and deep channel edges after dark; dawn and dusk windows round out the most productive daily windows before full summer heat loads the water.

For bass, the post-spawn transition is the defining story in June. Tactical Bassin's post-spawn guide recommends targeting isolated offshore structure — outside flats, submerged rock piles, and depth transitions where fish have pulled away from spent spawning grounds. A wobble-head or swinging jig paired with a shaky-head worm, dragged slowly along current breaks at 8 to 15 feet, is the setup producing fish in comparable post-spawn conditions. If flow on the Susquehanna holds near 6,000 cfs, tributary-mouth confluences deserve particular attention; current pushes baitfish into these seams and smallmouth stack accordingly.

Early morning topwater remains worth a shot during low-light periods. At 73°F, bass will push shallow to feed before sun loads the water — poppers or soft-plastic swimbaits along shaded bank structure in tributary arms can draw aggressive strikes in the first two hours of daylight.

Fishing the Midwest notes that smaller rivers adjacent to major stems often fish well in June as main-river temperatures climb. Anglers willing to explore tributary streams off the Susquehanna or Allegheny may find cleaner, slightly cooler water and lighter pressure — worth scouting if main-stem readings push above 75°F later in the week. No specific weather forecast data was available for this report; check the local forecast before finalizing your timing.

Context

A 73°F water temperature on the Susquehanna in early June is roughly on schedule for this watershed. The river typically crosses the 70°F threshold in late May to early June as air temperatures stabilize into summer range, making this reading consistent with normal seasonal progression rather than an early or anomalous signal.

Flow at 6,000 cfs at USGS gauge 01540500 represents a moderate early-summer condition for the Susquehanna. Spring runoff events routinely push this gauge significantly higher; at 6,000 cfs, current seams remain defined enough to concentrate fish on structure without blowing them off, and wading access is feasible at shallower sections during stable conditions.

For catfish specifically, June marks the onset of peak spawning and post-spawn feeding across Pennsylvania's major river systems. The record 36.2-pound flathead documented on the Delaware River by Wired 2 Fish on June 1 is a notable benchmark, but flatheads of this caliber are not unusual on the Susquehanna system, which holds healthy populations in deep pools, undercut banks, and log-jam structure. Cut bait fished on bottom in slow current — the exact method behind that record catch — is the traditional and most reliable June approach and has been for generations on these rivers.

No direct Susquehanna- or Allegheny-specific catch reports appeared in this week's available angler intel feeds. The PA Fish & Boat Biologist Reports page was queried but did not return conditions data in the current fetch. Smallmouth bass and walleye condition assessments are therefore grounded in typical June seasonal patterns for these watersheds rather than attributed on-the-water intel from this specific week. Anglers should check the PA Fish & Boat Commission's biologist report page directly for any updated species-specific guidance before heading out.