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| | Lake Superior - Wikipedia, the free encyclopedia |
 | | The rapids on the river necessitate the Sault Locks (pronounced "soo"), a part of the Great Lakes Waterway, to move boats over the 25 foot height difference from Lake Huron. |
| | The larger towns on Lake Superior include: the twin ports of Duluth, Minnesota and Superior, Wisconsin; Thunder Bay, Ontario; Marquette, Michigan; Sault Ste. |
| | Duluth, at the western tip of Lake Superior, is the most inland point on the Saint Lawrence Seaway. |
| en.wikipedia.org /wiki/Lake_Superior (845 words) |
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