Whitehead Island is a small, privately owned island located in the Gulf of Maine, off the coast of St. George in Knox County, Maine, United States. The island lies approximately 1 mi (1.6 km) southeast of the mainland and is situated at geographic coordinates 44°05′12″ N 68°48′30″ W. The island is most notable for the historic Whitehead Light, a lighthouse first illuminated in 1866.
Geography
Whitehead Island encompasses an area of roughly 16 acre (6.5 ha). The island’s topography is modest, rising to a maximum elevation of about 30 feet (9 m) above sea level. Its shoreline consists primarily of rocky outcrops interspersed with sandy beaches that provide limited anchorage for small vessels. The interior is covered with a mix of native hardwoods and coniferous trees, typical of the coastal Maine forest ecosystem. The surrounding waters are part of the rich marine habitat of Penobscot Bay, supporting a variety of fish, seabirds, and marine mammals.
Historical Significance
The Whitehead Light was authorized by the United States Congress in 1864 and completed in 1866 to aid navigation through the hazardous passages of Penobscot Bay. The original structure comprised a 30‑foot (9 m) granite tower surmounted by a lantern room equipped with a fourth‑order Fresnel lens. The lighthouse was staffed by keepers until 1965, when it was automated and subsequently transferred to the United States Coast Guard for maintenance. The light remains an active aid to navigation and is listed on the National Register of Historic Places as part of the “Lighthouses of Maine” thematic group.
Ownership and Access
In the latter half of the 20th century, the island was purchased by private individuals who have maintained the lighthouse and limited the island’s development to preserve its natural character. Public access is restricted; however, the island is occasionally visited by researchers, lighthouse enthusiasts, and chartered boat tours that anchor offshore for viewing the historic structure.
Ecology and Conservation
The island’s relatively undeveloped state provides a haven for nesting seabirds such as gulls and terns, as well as for small mammals like the Eastern chipmunk. Conservation efforts focus on preventing invasive species and minimizing human impact on the fragile coastal ecosystem. The lighthouse and island are occasionally included in state‑sponsored heritage and environmental programs that promote awareness of Maine’s maritime history and coastal biodiversity.
