The Mackinaw River Basin: 125 miles long, 1,138 square miles drainage area, 99 fish species, 2 State Endangered: Lake Sturgeon and Blacknose Shiner, 1 State Threatened: American Brook Lamprey, 13 Species of Greatest Conservation Need (IWAP), 4 Exotic Species: Common Carp, Grass Carp, Bighead Carp, Silver Carp. PDF [2.65 MB]