Main Street (Route 102), Mount Desert
Each spring, alewives (river herring) return from the sea to reproduce in freshwater lakes. At one time, the annual arrival of these fish provided an important food source for early New Englanders because they kept well when smoked or salted. Today. Many river herring runs have disappeared due to overfishing, pollution, and dams and other barriers to fish passage. In the Mill Pond watershed in Somesville, several dams constructed in the late 1700s to power saw, grist, and woolen mills blocked the alewife migration. Runs did not entirely disappear, because some adult fish were usually caught below and released above the dams by citizens interested in preserving an alewife run. Fishways were eventually installed in these dams to allow the alewives to continue in their natural migration, but in recent times those fishways had fallen into disrepair and alewife runs nearly disappeared. Starting in 2005, fishway restoration has enabled the return of this sea-run fish to Somesville. Watch the schools make their way through the historic fishways between early May and early June. Park at the Historical Society Museum, where an interpretive sign adjacent to the Mill Pond explains how it all works.
Year-round. Parking. Interpretive sign.
Sources & Links
Somes-Meynell Wildlife Sanctuary 207.244.4027
Mount Desert Island Historical Society 207.276.9323
Somesville Maine Alewife Run 2011, You Tube Video (3.23 minutes, Alewives visible starting at 47 seconds)
Alewife Runs at Somesville, Maine. KnowledgeBase (Science and information management for the Gulf of Maine and its watershed)
Alewives, Acadia National Park Resource Brief, June 2009.
Restoring alewives, American eel, and sea lamprey in Somesville on Mount Desert Island, Maine. December 5, 2006. Us Fish and Wildlife Service, Gulf of Maine Program.