The National Marine Fisheries Service and the U.S. Fish and Wildlife Service want to expand their endangered species listing for Atlantic salmon to include three of Maine’s biggest rivers.
The plan to be published in Wednesday’s Federal Register calls for applying the endangered species designation to Atlantic salmon from the Androscoggin, Kennebec and Penobscot rivers. Officially, the area would extend from the Androscoggin eastward to the Dennys River in Washington County.
The two agencies originally floated the proposal in 2006, but it was shelved pending further study.
The endangered species designation already applies to the Dennys, along with Cove Brook and the East Machias, Machias, Pleasant, Narraguagus, Ducktrap and Sheepscot rivers.