Missouri River, Beaverhead River, Jefferson River, Big Hole River, Wise River, Boulder River, Roe River, Maddison River, Gallatin River, Smith River, Marias River, Two Medicine River, Teton River, Judith River, Muscleshell River, Redwater River, Poplar River, Big Muddy Creek, Little Muddy Creek, Yellowstone River, Gardner River, Redwater River, Stillwater River, Clarks Fork, Bighorn River, Little Bighorn River, Tongue River, Powder River, Little Powder River, Little Missouri River