US bid to return salmon to Connecticut River ends

Before European settlers arrive, Atlantic salmon are found in what will be the US from the Housatonic River to the St. Croix.
The first dam across the Connecticut River is built near the present day site of Turners Falls dam. This blocks the last remaining spawning habitat.
Early 1800s
Atlantic salmon go extinct in the Connecticut and Merrimack rivers as well as other rivers south of Portland.
First recreational Atlantic salmon reported caught by rod and reel in Maine.
First hatchery releases in Maine supplement wild population.
Yearly commercial landings in Penobscot River typically exceed 50,000 pounds.
Late 1940s
Commercial salmon fishing ends in Maine.
Anadromous Fish Act passed, sparking conservation of salmon and other fish that leave the sea to spawn in rivers.
First Atlantic salmon returns to the Connecticut River.
Congress authorizes formation of the Connecticut River Atlantic Salmon Commission to oversee the restoration of anadromous fish to the river.
Commercial sea pens in Maine start growing salmon for market.
Recreational salmon fishing in Maine becomes more restrictive.
Commercial production of farmed Atlantic salmon in Maine exceeds 11,000 tons and $50 million in value.
Salmon in eight coastal rivers are placed on the US Endangered Species list as Gulf of Maine Distinct Population Segments.
Salmon in the Androscoggin, Kennebec, and Penobscot rivers are added to the Endangered Gulf of Maine species list.
US Fish and Wildlife announces end to Connecticut River Atlantic salmon effort.

SOURCES: US Fish and Wildlife Service, Steve Gephard of Connecticut River Atlantic Salmon Commission, John Kocik of the National Oceanic and Atmospheric Administration, Boston Globe archives

David Butler, Patrick Garvin/Globe Staff

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