saint lawrence seaway

الإنجليزية - الإنجليزية

تعريف saint lawrence seaway في الإنجليزية الإنجليزية القاموس.: An international waterway, about 3,781 km (2,350 mi) long, consisting of a system of canals, dams, and locks in the St. Lawrence River and connecting channels through the Great Lakes. Jointly developed by the United States and Canada, the seaway opened in 1959 and provides passage for oceangoing ships as far west as Lake Superior. U.S.-Canadian waterway and lock system. Located along the upper St. Lawrence River, it links the Atlantic Ocean with the Great Lakes. Its construction, carried out in 1954-59, involved clearing a 186-mi (299-km) stretch of the St. Lawrence River between Montreal and Lake Ontario. It included lakes, rivers, locks, and canals that extended for 2,340 mi (3,766 km) to connect Duluth, Minn., with the head of the Gulf of St. Lawrence. With the Great Lakes, it provides 9,500 mi (15,285 km) of navigable waterways. It allows deep-draft ocean vessels access to the Great Lakes' rich industrial and agricultural regions. It is navigable from April to mid-December; a seaway involving the Saint Lawrence River and the Great Lakes that was developed jointly by Canada and the United States; oceangoing ships can travel as far west as Lake Superior

saint lawrence seaway