Upper Mississippi walleye and catfish hit summer stride at new moon

What's Biting

What's Next

Tonight's new moon sets the table for active low-light feeding windows through mid-week. As the moon waxes toward a crescent over the coming days, walleye and smallmouth bass will remain most catchable during the first and last hours of daylight, with a secondary window once the sun fully sets. Midday sessions may slow as summer temperatures climb; targeting shaded current edges and deeper wing dam scours will outperform open-water drifting during peak brightness.

Fishing the Midwest's Bob Jensen makes a strong case for river structure this time of year, noting that current edges and channel transitions hold fish consistently through summer when lake fishing turns fickle with warming water. On the Upper Mississippi pools, wing dams are the signature piece of structure. The downstream scour of each dam creates current breaks where walleye and sauger stack. A jig-and-minnow or bottom-bouncing crawler rig worked through the downstream eddy, starting shallow on the dam crest at dusk and stepping deeper as light fades, is the reliable technique for this window.

For bass, the backwater lakes connected to the main channel across the pools warm rapidly through the third week of June. Tactical Bassin highlights how Great Lakes smallmouth respond well to swimbait presentations in choppy, wind-blown conditions: a finesse swimbait draws numbers while a heavier presentation targets larger fish. Apply the same logic to Upper Mississippi smallmouth holding on current breaks, rocky shoreline transitions, and laydowns at the edges of backwater timber.

Catfish should be on the move. June is historically prime channel cat season on the Mississippi, and tonight's new moon means zero ambient light after dark, ideal conditions for flatheads and channel cats moving into shallower current edges to feed. Cut bait or live shad worked off the bottom in main-channel holes or at the base of a wing dam is the standard approach. Weekend night sessions could be especially productive as fish capitalize on the full dark-moon window.

No local weather feed is available this cycle, so check forecasts before heading out. If upstream precipitation has pushed river stage above normal, back off main-channel spots and target slower side channels and backwater lakes where fish push out of the velocity. Fishing the Midwest notes that river fish consistently seek refuge from heavy current, and the transition zones between backwater and main channel become the most productive seams when the river is running big.

Context

Mid-June sits at the hinge point of the Upper Mississippi fishing calendar. Walleye on the Wisconsin pools typically finish spawning in late March through April, and by late May and June the fish have dispersed from their spawning grounds and are rebuilding feeding activity on wing dams, current seams, and the outside bends of secondary channels. This is historically a reliable window, less crowded than the May opener but often just as productive once fish settle into summer structure.

White bass, which stage impressive spawning runs up the tributaries in April and early May, are typically dispersing back through the main pools by mid-June. Wired 2 Fish's coverage of white bass fishing illustrates how the species scatters widely after peak spawn activity, making tight main-channel schools harder to locate; similar post-spawn dispersal dynamics apply to Upper Mississippi fish, which are still feeding but spread across a wider range of current seams and backwater transitions.

No pool-specific comparative intel from charter captains or local tackle shops in the corridor surfaced in this week's feeds, so a precise read on how 2026 is tracking against prior seasons is not available here. Fishing the Midwest notes the 2026 open-water season is generally in full swing with good activity reported regionally, but whether individual pools are running ahead of or behind historical pace would require local sourcing from shops along the corridor.

The new moon alignment on June 15 is worth noting in historical context. The combination of new-moon low-light nights and warming mid-June water temperatures has historically produced some of the strongest catfish and nighttime walleye sessions of early summer on the Upper Mississippi. Anglers who fish the pools regularly tend to mark these new-moon windows as reliable calendar dates, particularly for flatheads on the deeper main-channel holes in the lower pools.