Walleye and smallmouth lock into summer mode across Michigan's Great Lakes

What's biting

What's next

**Walleye**

The June 29 full moon is a well-established trigger for walleye feeding across the Great Lakes system. Expect fish to become most active along current breaks and structure edges from roughly two hours before sunset through midnight, then again at first light. On the Grand River, downstream eddies behind bridge pilings and wing dams concentrate baitfish and the walleye that follow them. AnglingBuzz (YT) has been running content on slip-bobber setups and larger plastics for locating suspended fish, techniques that translate cleanly to river channel fishing during full-moon nights. Jason Mitchell Outdoors (YT) also covers casting light jigs upwind for walleye, a method well-suited to the slower mid-river stretches between Grand Rapids and Grand Haven.

**Smallmouth Bass**

This is prime time for river smallmouth. Jason Mitchell Outdoors (YT) recently highlighted a productive summer smallmouth session, and late-June fish on the Grand River and Lake Michigan tributary streams are typically in their most aggressive post-spawn feeding mode. Gravel bars, rocky current seams, and the tailwater of logjams all produce. Wired 2 Fish notes that northern-latitude bass are entering a high-metabolism phase as July arrives, with fish splitting between shallow-cover ambush and mid-column structure. Crayfish-pattern soft plastics and dawn topwater presentations should both produce over the next several days.

**Yellow Perch**

The shallow flat troll that has been underperforming lately tends to improve when anglers move deeper. Late June perch scatter into open basins following baitfish pods. Saginaw Bay and Lake St. Clair both typically hold fish in the 20 to 35-foot range at this point in the season, where small jigging spoons and drop-shot rigs outperform a worm troll at 5 to 7 feet.

**Crappie and Panfish**

AnglingBuzz (YT) has been running content on summer crappie tactics, including hard-bait presentations and forward-facing sonar for locating schools. Submerged dock structure and weedline edges in the 10 to 15-foot range are classic mid-summer crappie addresses as vegetation fully establishes through early July.

The best timing window this week is the 48-hour post-full-moon period. Walleye and perch tend to stay active after the lunar peak before the bite tapers back toward normal. Plan dawn and dusk outings through Saturday. Great Lakes weather shifts quickly; check local marine forecast before launching.

Context

Late June is historically a reliable transition window for Michigan anglers. Most game fish species complete their spawning cycles by mid-June and shift into post-spawn recovery, followed by the aggressive summer feeding patterns that define July and August on the Great Lakes. Walleye action in Saginaw Bay, Lake Erie's western basin, and the Grand River corridor typically stabilizes into predictable structure-oriented fishing by the fourth week of June, and smallmouth bass make the same move: off redds, back on feeding lies.

The Grand River at 2,620 cfs (USGS gauge 04119000) reflects a moderate summer flow, well above drought-year lows but far below the spring runoff peaks that can push the river above 10,000 cfs. This level is generally favorable for boat anglers targeting the lower river; current seams are well-defined without being fast enough to push fish into unproductive cover.

The MI DNR published its June 24, 2026 weekly fishing report, the most current available, though the detailed regional breakdown was not accessible in today's data feed. Fishing the Midwest reinforces that summer weedline patterns are now the dominant mid-season story across Great Lakes-adjacent fisheries, with anglers who move to structure and depth consistently outperforming those still running pre-spawn shoreline approaches.

This season appears to be tracking on schedule for the region. No comparative signal in the current feeds suggests significant early or late effects carrying forward from spring conditions. The perch, walleye, and bass picture described across sources aligns with typical late-June expectations. The full moon on June 29 is a timing benchmark that experienced Great Lakes guides frequently cite as a high-percentage window, particularly for walleye and perch, making this weekend worth prioritizing even on otherwise average conditions.