| YADKIN RIVER (including Falls Lake below normal operating levels) | NC | Reservoir | Not Supporting | 1 | 170 |
| YADKIN RIVER (including lower portion of Falls Lake and upper portion of Lake Tillery below normal operating levels) | NC | Reservoir | Not Supporting | 1 | 34 |
| YADKIN RIVER (including lower portion of High Rock Lake) | NC | Reservoir | Not Supporting | 3 | 11 |
| YADKIN RIVER (including lower portion of High Rock Lake) | NC | Reservoir | Not Supporting | 3 | 2,627 |
| YADKIN RIVER (including lower portion of High Rock Lake) | NC | Reservoir | Not Supporting | 3 | 859 |
| YADKIN RIVER (including lower portion of High Rock Lake) | NC | Reservoir | Not Supporting | 3 | 861 |
| YADKIN RIVER (including lower portion of High Rock Lake) | NC | Reservoir | Not Supporting | 2 | 478 |
| YADKIN RIVER (including Tuckertown Lake, Badin Lake) | NC | Reservoir | Not Supporting | 1 | 548 |
| YADKIN RIVER (including Tuckertown Lake, Badin Lake) | NC | Reservoir | Not Supporting | 1 | 3,617 |
| YADKIN RIVER (including Tuckertown Lake, Badin Lake) | NC | Reservoir | Not Supporting | 2 | 1,400 |
| YADKIN RIVER (including upper portion of High Rock Lake below normal operating level) | NC | Reservoir | Not Supporting | 2 | 1,352 |
| YADKIN RIVER (including upper portion of High Rock Lake below normal operating level) | NC | Reservoir | Not Supporting | 3 | 802 |
| YADKIN RIVER (including upper portion of High Rock Lake below normal operating level) | NC | Reservoir | Not Supporting | 1 | 2,928 |
| YADKIN RIVER (including upper portion of High Rock Lake below normal operating level) | NC | Reservoir | Not Supporting | 2 | 488 |
| YADKIN RIVER (W. Kerr Scott Reservoir below Elevation 1030) | NC | Reservoir | Not Supporting | 1 | 267 |
| YADKIN RIVER (W. Kerr Scott Reservoir below Elevation 1030) | NC | Reservoir | Not Supporting | 3 | 616 |
| YADKIN RIVER (W. Kerr Scott Reservoir below Elevation 1030) | NC | Reservoir | Not Supporting | 1 | 315 |
| YADKIN RIVER (W. Kerr Scott Reservoir below Elevation 1030) | NC | Reservoir | Not Supporting | 1 | 301 |
| Yale Lake | WA | Lake/Reservoir/Pond | Not Supporting | 1 | 159 |
| Yankee Hill Lake | NE | Lake | Not Supporting | 5 | 183 |
| Yankee Lake | FL | Lake, Freshwater | Not Supporting | 2 | 48 |
| Yankee Lake | WI | Lake, Freshwater | Not Supporting | 1 | 14 |
| Yankee Meadow Reservoir | UT | Lake, Freshwater | Not Supporting | 1 | 56 |
| Yankton | MN | Lake, Freshwater | Not Supporting | 2 | 396 |
| Yards Creek | NJ | Lake | Not Supporting | 5 | 27 |
| Yatesville Lake | KY | Lake/Reservoir/Pond | Fully Supporting | 0 | 2,295 |
| Yaw | VT | Lake, Freshwater | Fully Supporting | 0 | 2.00 |
| Yawgoo Pond | RI | Lake, Freshwater | Not Supporting | 4 | 143 |
| Yawgoog Pond | RI | Lake, Freshwater | Not Supporting | 1 | 161 |
| Yellow Brook (above Bucks Mill) | NJ | Lake | Not Supporting | 2 | 9.37 |
| Yellow Creek Lake-05010007001363 | PA | Lake/Reservoir/Pond | Fully Supporting | 0 | 712 |
| Yellow Lake | WI | Lake, Freshwater | Not Supporting | 1 | 2,284 |
| Yellow River Flowage | WI | Lake, Freshwater | Fully Supporting | 0 | 85 |
| Yellow Smoke Park Lake | IA | Lake | Not Supporting | 1 | 29 |
| Yellowleaf Creek (Lay Lake) | AL | Reservoir Embayment | Not Supporting | 2 | 179 |
| Yellowstone Lake | WI | Reservoir | Not Supporting | 1 | 453 |
| Ymca Beach, Lake Michigan | WI | Great Lakes Beach | Not Supporting | 1 | Filed in miles |
| Yokum Pond | MA | Lake, Freshwater | Not Supporting | 1 | 98 |
| York Lake | MA | Lake, Freshwater | Not Supporting | 1 | 29 |
| York Pond | NH | Lake/Reservoir/Pond | Not Supporting | 4 | 22 |
| York Pond - Barry Conservation Camp Beach | NH | Lake/Reservoir/Pond | Not Supporting | 2 | 1.38 |
| York Pond Dam | NH | Impoundment | Not Supporting | 1 | 5.00 |
| Youghiogheny River Lake | MD | Impoundment | Not Supporting | 1 | 788 |
| Youghiogheny River Lake-05020006001912 | PA | Lake/Reservoir/Pond | Not Supporting | 1 | 2,916 |
| Young Lake | WI | Lake, Freshwater | Fully Supporting | 0 | 31 |