Michigan Flies
Scientifically selected and hand-tied for Great Lakes State rivers
How the timing works
Hatch windows start from Au Sable and Manistee charts and shift by river, then adjust to live USGS water temperature and growing degree days from gridMET. Every claim carries a tag: S for scientific, A for angler consensus, I for our inference. Read about the data.
Regulations and credits
Gear rules quoted here come from the 2026 Michigan Fishing Regulations digest and can change; confirm with the current DNR guide before you fish. Insect photographs are Creative Commons from iNaturalist observers, credited on each page. Stocking history is from the Michigan DNR Fish Stocking Database.