Location: Mark Island, Deer Island Thorofare
Nearest town: Stonington
44 08 03 N
68 42 08 W
Accessibility: The lighthouse is not open to the
public and is best seen by boat.
Station established: 1858; Present lighthouse built:
1858; Automated: 1958
Construction material: Brick
Height of tower: 25 feet; Height of focal plane: 52
Original optic: Fourth-order Fresnel; Present optic:
Characteristic: Flashing white every six seconds
Fog signal: One blast every 15 seconds
Other buildings still standing: None
Active U.S. Coast Guard aid to navigation.