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The Sault Ste. Marie Canal is a National Historic Site of Canada in Sault Ste. Marie, Ontario. Until 1987, the canal was part of the shipping route from the Atlantic Ocean to Lake Superior. It includes a lock to bypass the rapids on the St. Marys River. The first lock was built in 1798 by the Northwest Trading Company. On July 20, 1814 an American force destroyed the North West Company depot on the north shore of the St. Marys River. Since the Americans were unable to capture Fort Michilimackinac, the British forces retained control of the Sault.〔Mary Ellen Perkins (ed.) 'Discover your heritage: A Guide to Provincial Plaques in Ontario' Natural Heritage (Jun 30 1989) ISBN 0920474500 - plaque near eastern end of Canadian locks, Huron Street, Saint Ste. Marie〕 The lock was destroyed in 1814 in an attack by U.S. forces during the War of 1812.〔(Sault Ste. Marie Canal National Historic Site of Canada - The Fur Traders' Canal ).〕 In 1870, the United States refused the steamer Chicora, carrying Colonel Garnet Wolseley permission to pass through the locks at Sault Ste Marie. The Wolseley Expedition incident led to the construction of a Canadian Sault Ste. Marie Canal, which was completed in 1895.〔Mary Ellen Perkins (ed.) 'Discover your heritage: A Guide to Provincial Plaques in Ontario' Natural Heritage (Jun 30 1989) ISBN 0920474500 - plaque near Canadian locks, Huron Street, Saint Ste. Marie〕 The construction of the canal and lock was completed in 1895. At that time it was the largest lock and first electrically operated lock in the world. The canal is about long and originally the lock portion was long and wide.〔(Sault Ste. Marie Canal National Historic Site of Canada, Natural Wonders & Cultural Treasures ), Parks Canada.〕 On June 9, 1909 the locks were seriously damaged when the ''Perry G. Walker'', owned by the Gilchrist Transportation Co. of Cleveland, Ohio, crashed into the south main gate, forcing it back and allowing the force of water to push the north main gate over. The rush of water threw the ''Perry G. Walker'' back and carried two other ships downstream, one of which struck the south main gate, breaking it diagonally in two.〔(Parks Canada A Unique Bridge - Found Only in Canada! )〕 The rush of water through the destroyed locks was stopped by activation of the Emergency Swing Dam, allowing repairs to commence. Amazingly, there was no loss of life or injury associated with this disaster, and repairs required only 12 days, with the bridge reopening on June 21, 1909. Due to a wall failure in 1987, the historic lock was shut down indefinitely. A new lock, built within the old lock, was opened in 1998 and is long, wide, deep, with a draft.〔 The canal is used for recreational and tour boats; major shipping traffic uses the U.S. locks. There are several heritage buildings on the site: the administration building, the superintendent's residence, the canalmen's shelter, the powerhouse and the blacksmith shop, all constructed from red sandstone dug up during the canal's construction. Most of the original machinery used to operate the lock is also still in place. Another unique feature of the site is the emergency swing dam, the only one left in existence and the only one to ever be used in an emergency. Guided tours are available in the summer only. The visitor centre is open year round. File:SaultSteMarieCanalLock.jpg|Approaching the open lock from downstream. Image:SaultSteMarieCanal AdminBldg.jpg|The Administration Building was completed in 1895 - 1896.〔 File:Sault Canal power house 10.JPG|The powerhouse File:Sault Ste Marie Canal superintendent's house 1.JPG|The superintendent's house in winter File:Sault Canal workshop 1.JPG|The workshop File:Sault Ste Marie Canal emergency swing dam 3.JPG|The emergency swing dam, with the International Bridge and International Railroad Bridge in the background File:Whitefish Pond and Sault International Bridge 2.JPG|Ponds with ''Brasenia schreberi'' along the Attikamek Trail File:Attikamek Boardwalk and Sault Ste. Marie International Bridge.jpg|Boardwalk along the Attikamek Trail ==See also== * List of national historic sites of Canada * Soo Locks - Locks on the U.S. side of St. Marys River * Whitefish Island 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Sault Ste. Marie Canal」の詳細全文を読む スポンサード リンク
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