High Quality Content by WIKIPEDIA articles! Wood Island Light is an active lighthouse on the eastern edge of Wood Island in Saco Bay, Maine. The light is just outside the entrance to Biddeford Pool and the end of the Saco River. The lighthouse is a 47 feet (14 m) tall conical white tower constructed of granite rubble. The light itself sits 71 feet (22 m) above mean high water. It currently is automated and has an alternating green and white beacon every 10 seconds.