The Alley Bay project lies on the northeastern shore of Beak Island in Beals, adjacent to Alley Bay, off the coast of "Downeast Maine" opposite Jonesport. Beals Island is approximately 40 miles southwest of Eastport.

The tides and wave action of Alley Bay had caused severe erosion of the shoreline and endangered about 40 graves in the Sewall Field Cemetery. The project involved placing stone slope protection along approximately 530 feet of eroded shoreline to strengthen it and protect the cemetery.

Construction of the project began in October 1978 and was completed in January 1979 at a cost of $190,500. It was built under Section 14 of the Corps’ Continuing Authorities Program.