Northern Waterthrush has been seen by:
| Birder | Location | Town | County | Date |
|---|---|---|---|---|
| Carlos Pedro | Great Swamp | South Kingstown | Washington | 05-May-2021 |
| Paul L'Etoile | King Preserve | North Kingstown | Washington | 02-May-2021 |
| Jess Bishop | Gilbert Stuart | North Kingstown | Washington | 01-May-2021 |
| Dick & Marge Bradley | Sprague Farm | Glocester | Providence | 30-Apr-2021 |
| David Gregg | Saugatucket Rd. | South Kingstown | Washington | 29-Apr-2021 |
| John Bean | Monastery | Cumberland | Providence | 28-Apr-2021 |
| John Magill | Pardon Joslin Rd | Exeter | Washington | 26-Apr-2021 |
| Sue Palmer | Great Swamp | South Kingstown | Washington | 24-Apr-2021 |
| Barbara Sherman | ASRI George B. Parker Woodland | Coventry | Kent | 24-Apr-2021 |
| Jan St.Jean | Great Swamp | South Kingstown | Washington | 24-Apr-2021 |
| Don Heitzmann | Parker Woodland ASRI Preserve | Coventry | Kent | 18-Apr-2021 |