Free Resource · Updated 2026
The complete fly hatch chart for Michigan's world-class trout rivers. From the legendary Au Sable and Pere Marquette to the tailwater Muskegon, the wild Manistee, and the remote Upper Peninsula Black River — select your river below for peak hatch timing, fly pattern recommendations, and current month highlights for 2026.
Michigan's trout rivers are among the finest in the eastern United States, fed by cold groundwater springs and shaped by decades of conservation. The season begins with Midges and early Blue-Winged Olives as water temperatures rise in April, quickly followed by the iconic Hendrickson hatch — the most anticipated early-season dry fly event on rivers like the Au Sable and Pere Marquette. Brown Drake and Caddis hatches build through May and into June, setting the stage for the event every Michigan angler lives for.
The Hexagenia limbata hatch is Michigan fly fishing's crowning moment — enormous #4\u20136 mayflies that emerge in the last hour of light and spin well after dark on warm June and early July evenings. The Au Sable's famed \u201cMichigan caddis\u201d (Hex) hatch draws anglers from across the country for explosive surface action on fish that feed with abandon. The White Fly hatch on the Au Sable in late July and August is another Michigan specialty rarely seen elsewhere in the country.
Fall fishing extends well into October with Mahogany Duns, returning Blue-Winged Olives, and Trico spinner falls through September. The Muskegon's tailwater character keeps it productive year-round. Pair this chart with FlyFishFinder's real-time USGS gauge alerts to know exactly when your river is running right.
See Live Michigan River Conditions →FlyFishFinder combines hatch knowledge with live gauge alerts, Prime condition indicators, and real angler intel — so you show up on the right day, not the wrong one.
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