Smallmouth Firing on Topwater as Lake Michigan Salmon Begin to Stage

What's Biting

What's Next

Moderate spring flows in the Grand River system are holding the confluence corridor in fishable shape, with levels expected to ease toward summer baseline over the next several weeks as regional precipitation stabilizes. While steelhead are the classic target for this stretch of river, the run is entering its final phase — late-run fish completing their dropback to the lake are the primary opportunity right now, and that window will tighten significantly over the next two to three weeks. Drift presentations near deeper holes and current seams remain the most reliable approach for these transitioning fish.

The more urgent opportunity, per Tactical Bassin, is the post-spawn bass bite already underway. With the bluegill spawn in full swing across Great Lakes fisheries, post-spawn smallmouth and largemouth are parked near shallow cover and feeding aggressively. Topwater frogs over matted vegetation, walking baits along rocky points, and chatterbaits through transitional weed edges are the recommended presentations. The waxing crescent moon phase supports early-morning and late-evening action, with low ambient light concentrating feeding activity into manageable windows. On Lake Michigan's nearshore, smallmouth that have finished spawning on gravel beds in protected bays will push to rocky shoreline structure — methodical coverage of points and transition edges in 4–12 feet should produce.

Looking ahead to Memorial Day weekend: boat pressure will spike across the region. Fish first light and plan to be off the most accessible water by mid-morning. Savvy anglers will push slightly offshore or work less-pressured pockets of the river mouth shallows to avoid competition.

For salmon, the WI DNR Lake Michigan Fishing Report's 2024 harvest data — record coho, strongest Chinook since 2012 — points to a well-stocked system heading into the 2026 season. Early Chinook staging near river mouths typically begins building through late May and into June. Trolling spoons and stick baits in the upper 30 feet of the water column near the river mouth will start producing as fish migrate shoreward from deeper wintering grounds. Baitfish marks on the sonar and surface bird activity are your earliest indicators of where fish are stacking.

Water temperature remains the missing variable this report: the USGS gauge at site 04119000 did not return a thermal reading this cycle. As river temps approach the upper 50s°F — typical for late May in west Michigan — the steelhead dropback will accelerate and Chinook pre-staging should intensify nearshore. Running a thermometer when you launch will tell you quickly where thermal breaks are setting up in the water column.

Context

For Lake Michigan's west Michigan shoreline and Grand River mouth, mid-May sits at the seam between two distinct fisheries: the spring steelhead push winding down and the summer salmon buildup beginning. In an average year, peak Grand River steelhead action falls between late March and the first week of May; by the third week of May, most fish have completed their spawning run and are working back toward the lake. A late or cold spring can extend this window a week or two, but without water temperature data from this period's gauge read, it is difficult to characterize 2026 as early or late relative to average.

The population context offered by the WI DNR Lake Michigan Fishing Report stands out as a meaningful backdrop. The 2024 harvest of 210,000+ coho — a record — and 160,000+ Chinook (the most since 2012) reflects a system firing on all cylinders: strong alewife forage classes, healthy stocking programs, and good first-year survival for recent year classes. These numbers don't directly predict 2026 conditions, but they do signal that the Lake Michigan salmon fishery is in one of its stronger recent cycles, with stocked-fish survival elevated across the system.

For bass, Tactical Bassin's report of a full-swing bluegill spawn aligns precisely with what mid-May typically looks like across Great Lakes fisheries — this reads as on-schedule. Smallmouth on the west Michigan shoreline are typically in the late pre-spawn or active spawn phase by the second and third week of May, transitioning quickly to post-spawn aggression as water temperatures climb through the 60s°F. The pattern Tactical Bassin describes — big bass keyed on bluegill beds, responding to topwater — is exactly what Great Lakes smallmouth fishing looks like on a productive mid-May week.

No direct side-by-side comparison to prior-year conditions is available in this report period's intel feeds. The MI DNR Weekly Fishing Report, which would provide the most granular local conditions data, did not return usable information this cycle. Overall, the seasonal indicators and population data suggest 2026 is shaping up as an average-to-above-average year, consistent with recent trend lines from the lake's stocking and harvest programs.