Michigan
Live fishing conditions for 12 rivers and creeks.
Michigan is the Midwest's trout destination, and its rivers run on groundwater, not snowmelt. Cold springs well up through the sand and gravel of the northern Lower Peninsula and feed rivers that hold a stable temperature and steady flow year-round — the Au Sable, the Manistee, the Pere Marquette, the Boardman. That spring-fed plumbing is why the fishing here is a different animal from the freestone West: flows don't blow out with every rain, water temps stay trout-friendly deep into summer, and the same river fishes in April and August. Two fisheries share this water. Resident wild brook, brown, and rainbow trout live in the upper rivers, and Great Lakes-run steelhead and salmon — Chinook, coho, and chrome steelhead — push up from Lakes Michigan and Huron into the lower reaches on their seasonal runs. The Au Sable's Holy Water near Grayling is the sport's ground zero: Trout Unlimited was founded on its banks in 1959, and the flies-only, no-kill stretch has protected wild browns for generations.
The calendar splits between hatches and runs. The resident-trout season peaks with the mayfly parade — Hendricksons and caddis in spring, Sulphurs in early summer, and then the Hex: the giant Hexagenia limbata mayfly that hatches after dark in late June and July and pulls the biggest browns to the surface, the single most anticipated event on the Michigan calendar, fished by feel in the black. The steelhead and salmon rivers of the west — the Pere Marquette, the Muskegon below Croton, the Manistee below Tippy Dam — run cold and busy in fall (kings and coho, then fall steelhead) and again in spring as steelhead drop back. Michigan designates its trout streams by gear type, Type 1 (general regulations) through Type 4 (flies-only, catch-and-release), with Gear Restricted reaches and Brook Trout Restoration Areas overlaid on specific stretches — so the sign at the access point sets the rules, not the river as a whole. The general inland-trout season runs the last Saturday in April through September 30; Great Lakes tributaries stay open year-round for steelhead and salmon. This is wade-and-drift water — the low-profile Au Sable riverboat was built for exactly these narrow, log-jammed, sand-bottom rivers — small to medium in size, technical, and cold enough to fish when the rest of the country has given up on summer.