Full Moon Ignites Wabash Catfish as Lake Michigan Salmon Transition Deep

What's biting

What's next

The next two to three days extend a classic late-June summer pattern across Indiana's two primary freshwater venues.

On the Wabash River, the full moon window peaking June 28 sets up one of the stronger catfish opportunities of the month. Channel catfish and flathead catfish typically move to current seams and deeper holes after dark during the full moon, feeding through the night and tapering as morning light strengthens. Drift fishing with cut shad or live bream near deep holes below riffles is the traditional approach for this phase. As the moon begins to wane into early July, expect the nighttime bite to gradually moderate toward standard daytime patterns.

For smallmouth bass on the Wabash, Fishing the Midwest reports that summer fish have largely finished their post-spawn scatter, with bigger fish dropping to current breaks and submerged timber while smaller fish hold in shallow riffles. Tactical Bassin's recent summer bass coverage points to finesse presentations as the call in clear-water conditions: soft jerkbaits and drop-shot rigs often outperform power baits when midday light penetration is high.

On southern Lake Michigan, late June marks the start of the thermocline transition for Chinook salmon. Kings that were accessible near the surface through May and early June will push gradually deeper over the coming weeks as the thermocline firms up. Trolling spoons and fly-and-flasher rigs behind downriggers or dipsy divers, targeting the temperature break depth, will be the most consistent approach from Indiana's Lake Michigan shoreline. Yellow perch fishing near offshore structure typically holds steady through July.

Wired 2 Fish's recent feature on round gobies as a cornerstone forage species in the Great Lakes is timely heading into the full-moon weekend. Nearshore smallmouth on rocky structure tend to feed aggressively on gobies during low-light periods, and tube jigs or drop-shot rigs worked slowly along riprap and pier pilings should be productive at dawn and dusk.

Anglers should also note that Great Lakes Now reports scientists are deploying new algal bloom monitoring buoys across the region. As summer heat continues building, check for bloom advisories near river mouths and shallow embayments before contact with the water.

Context

Late June sits in the heart of the prime catfish season on the Wabash River. Indiana's longest river typically warms into the upper 70s to low 80s Fahrenheit by the last week of June, putting water temperatures in the optimal range for channel and flathead catfish activity. Full moon periods in late June carry a long reputation among Midwest river anglers as the best catfish windows of the summer, with bright nights drawing fish out of deep cover and into shallower feeding flats. Fishing the Midwest consistently points to summer rivers as underutilized fisheries holding multiple species through the warm months: walleye, smallmouth, catfish, and white bass all actively use Wabash structure through the heat of summer.

For southern Lake Michigan, late June historically represents a transitional point. Chinook salmon that were accessible in shallower, cooler surface water through May and early June begin their seasonal descent to thermocline depths as surface temperatures climb. IL/IN Sea Grant's Lake Michigan buoy network is among the most valuable public resources for southern Lake Michigan anglers during precisely this window, when knowing the thermocline depth is often the difference between a productive troll and a slow one.

Wired 2 Fish notes that the goby establishment in the Great Lakes has produced an unintended benefit for the broader fishery: a dense, reliable forage base that has contributed to improved growth rates for smallmouth bass and salmon compared to pre-goby baselines. This represents a meaningful shift from earlier decades when Great Lakes smallmouth relied more heavily on crayfish and small baitfish, and it helps explain why goby-imitating presentations have become so effective near rocky structure.

No comparative data or year-over-year angler intel was available in this week's feeds to indicate whether Indiana's 2026 season is running ahead of, behind, or on pace with typical late-June conditions. Consult local tackle shops and IDNR resources for current river levels and any applicable regulations before heading out.