| | Site # | Site Name | Value |
| 90 | YAAK RIVER nr Troy | 76 |
| 91 | YELLOWSTONE at Lake Outlet | 83 |
| 92 | YELLOWSTONE RIVER at | 89 |
| 93 | YELLOWSTONE RIVER at | 87 |
| 94 | YELLOWSTONE RIVER at Miles | 84 |
| 95 | YELLOWSTONE RIVER near | 86 |
| 96 | YELLOWSTONE RIVER nr Sidney | 79 |
| 97 | MUSSELSHELL R NR | 89 |