| Willow Creek At Opportunity, MT |
| Willow Creek Near Anaconda, MT |
| Willow Creek Near Boyd, MT |
| Willow Creek Near Harrison, MT |
| Yaak River Near Troy, MT |
| Yellowstone River At Billings, MT |
| Yellowstone River At Corwin Springs, MT |
| Yellowstone River At Forsyth, MT |
| Yellowstone River At Glendive, MT |
| Yellowstone River At Miles City, MT |
| Yellowstone River At Yellowstone Lake Outlet YNP, MT |
| Yellowstone River Near Livingston, MT |
| Yellowstone River Near Sidney, MT |
