| Onion River | Onion River | 0.00 | 31.80 | 51200 | River | Sheboygan | Total Phosphorus | Degraded Biological Community | TMDL Approved | Not Applicable |
| Unnamed | Un. Trib. To Onion River via Waldo Impoundment | 0.40 | 4.13 | 52600 | River | Sheboygan | Sediment/Total Suspended Solids | Degraded Habitat | TMDL Approved | Not Applicable |
| Unnamed | Unnamed Tributary To Onion River Through Waldo Impoundment | 0.00 | 0.40 | 52600 | River | Sheboygan | Sediment/Total Suspended Solids | NA | Water Delisted | Delisted 2008 |