Smallmouth and Catfish Active on a Low Delaware as Dog Days Set In

What's biting

What's next

Tonight's full moon is the most immediate trigger worth planning around. Catfish and smallmouth on the Delaware River tend to feed aggressively during full moon windows, with cooling overnight air temperatures amplifying the bite. Work the deeper outside bends, structure beneath bridge pilings, and current seams at the head and tail of pools where fish have concentrated under low-water conditions. Cut bait fished deep is the play for catfish; topwater or soft plastics worked slowly along deeper edges suits the smallmouth on these warm nights.

The drought trend deserves close attention heading into the holiday weekend. Old School Outdoors (The Fisherman — NJ/DE Freshwater) confirms the river is still running below normal even after late-month rains. Low water creates opportunity: fish stack predictably in the remaining deep holes and current breaks, reducing the search radius considerably. If any rainfall arrives, expect a brief clarity slowdown followed by a rebound as fresh nutrients flush through and flows tick upward.

Daytime summer heat will keep bass activity pushed into dawn and dusk windows through the 4th of July. JB Kasper (The Fisherman — NJ/DE Freshwater) points to topwater early, then deeper presentations as the sun climbs. Tackle World, also via The Fisherman — NJ/DE Freshwater, notes July typically marks the start of deepwater smallmouth action in larger reservoirs, so anglers with access to deeper impoundments should begin probing ledges and drop-offs with finesse rigs or tube baits.

For Pine Barrens largemouth, the prime window remains first light and last light. Dense vegetation has proliferated through the warm, dry stretch. Weedless presentations along grass edges and lily pad openings are the consistent producers in the tannin-stained cedar-water systems. A slow-moving wacky rig or a spinnerbait burned through gaps in pads gives largemouth a clear look before the midday sun shuts the bite down.

Context

Late June and early July on the Delaware River and Pine Barrens systems normally marks the hard pivot into full summer mode, with post-spawn smallmouth active in the main channel and largemouth settled into deep-weed-edge patterns. By this calendar date, the dog-days pattern, early and late activity with midday shutdowns, is expected and broadly consistent across most years.

What stands out in 2026 is the severity of the drought. JB Kasper (The Fisherman — NJ/DE Freshwater) catalogued June as marked by 90-plus degree days, erratic weather, drought, low water, and below-normal water temperatures, calling the combination 'everything you need to make fishing a great big puzzle.' Old School Outdoors in Ewing corroborates the below-normal river levels persisting even after late-June rains, suggesting the system has not meaningfully recovered from the dry stretch. That said, the smallmouth bite being described as 'good' is a positive signal: low, clear water concentrates fish and can produce precise, high-quality catches for anglers willing to work methodical drifts.

The crappie slowdown noted by Old School Outdoors is consistent with typical seasonal behavior: crappie peak in spring as fish move shallow to spawn, then retreat as summer heat deepens and disperses schools. Its taper by late June is on schedule and expected to continue through August.

Catfishing on the Delaware is right on time. Summer is traditionally the strongest catfish season in the river, with channel cats active through the warmest months as elevated water temperatures accelerate metabolism. NJ Fish & Wildlife News notes Hamburg Mountain WMA in Sussex County offers stocked trout in Silver Lake and Franklin Pond Creek as a cool-water alternative for anglers looking beyond the warm-water Delaware corridor, though the Pine Barrens blackwater systems remain a warm-water largemouth and pickerel environment through the summer.