8 active Isle Royale alerts
- CautionFlooded Greenstone Ridge Trail rerouteMentions this placeFollow the flagged reroute on the flooded Greenstone Ridge Trail between Daisy Farm Campground and East Chickenbone Campground; beaver activity is causing the flooding.Official details
- ClosureSeasonal park closure begins November 1Isle Royale closes to public use November 1–April 15 because extreme winter weather threatens visitor safety; the closure extends 4.5 miles into Lake Superior from the island.Official details























