Where is whirling disease found in the U.S.?
Whirling disease is often thought of as a problem that only affects some of our highly productive trout fisheries in the Western U.S. But the sad truth is that the whirling disease parasite has been detected in at least 22 states. Where is whirling disease found in Michigan? To date, whirling disease has been found in the following Michigan river systems: • Manistee River at CCC Bridge • Manistee River, North Branch • Little Manistee River at State Road • Au Sable River, North Branch • Au Sable River (from Parmalee Bridge to above Mio) • Tobacco River, North Branch • Jordan River (two locations) • Pigeon River (two locations) • Sturgeon River near Wolverine • Black River (Mackinac County) No state-owned facilities are positive for the Whirling Disease parasite. One private hatchery on the Pine River has tested positive, though the river itself has tested negative. Does Michigan stock infected trout? No, all the fish stocked in Michigan’s public waters are certified free of whirling dis
