| Darien, Connecticut United States | |
| 41° 3' 16.34'', -73° 27' 5.29'' | |
| Sheffield Harbor |



| Depth | 8-11' |
| Description | At the mouth of Fivemile River at Butlers Island, you can anchor here for good holding in thick mud. |
| Wind protection direction | Exposed southwest through southeast |
| Wake protection direction | Exposed southwest through southeast |