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The Great Lakes Basin consists of the Great Lakes and the surrounding lands of the states of Illinois, Indiana, Michigan, Minnesota, New York, Ohio, Pennsylvania, and Wisconsin in the United States, and the province of Ontario in Canada, whose direct surface runoff and watersheds form a large drainage basin that feeds into the lakes. It is generally considered to also include a small area around and beyond Wolfe Island, Ontario, at the east end of Lake Ontario, which does not directly drain into the Great Lakes, but into the Saint Lawrence River.

The Basin is at the center of the Great Lakes region.

Demographics

The basin is home to 37 million people. It hosts seven of Canada's 20 largest census metropolitan areas, namely Toronto, Hamilton, Kitchener–Cambridge–Waterloo, London, St. Catharines–Niagara, Windsor, and Oshawa. Also, the American cities of Duluth, Milwaukee, Chicago, Gary, Detroit, Toledo, Cleveland, Erie, Buffalo, Rochester, and Syracuse, among others, are located in the basin.

Sub-basins

Each individual lake forms a sub-basin, such as the Lake Erie Basin, and each sub-basin consists of multiple watersheds, such as Pennsylvania's Lake Erie Watershed. The overall Great Lakes Basin is monitored by the binational Great Lakes Commission.

St. Lawrence Basin

Quebec, a portion of whose lands drain into the St. Lawrence Basin, is a signatory to the Great Lakes Charter of 1985, the 2001 Charter Annex, and the Agreements of 2005. While not a part of the Great Lakes Basin, Quebec's position along the Saint Lawrence Seaway makes it a partner in water resource management with Ontario and the eight US states mentioned above.

Nuclear power plants

There are many nuclear power plants in the Great Lakes Basin, including twenty on the Canadian side. The International Joint Commission has a report on the nuclear power plants. Nuclear Report 2019 Corrected.pdf

See also

• Grand River
• Lake Ontario Waterkeeper
• List of prehistoric lakes
• Niagara River
• Saint Lawrence River
• Speed River
• River basins in the United States
• Watershed

Notes

1. "Great Lakes Quickfacts - Water - Environment Canada". Archived from the original on 2015-11-01. Retrieved 2015-10-29.
2. Great Lakes Basin Sustainable Water Resources Agreement, Government of Quebec
3. "CANDU reactors in operation in Canada"

External links

• Great Lakes Commission
• Hydrographic Regions of Quebec

v t e Great Lakes of North America
Main lakes	Erie Huron Michigan Ontario Superior
Secondary lakes	Nipigon Nipissing Simcoe St. Clair Winnebago Couchiching
Bays and channels	Erie Maumee Bay Presque Isle Bay Sandusky Bay Huron Georgian Bay Nottawasaga Bay Lake George Munuscong Lake North Channel Potagannissing Bay Saginaw Bay St. Joseph Channel Thunder Bay Michigan Grand Traverse Bay Green Bay Big Bay de Noc Little Bay de Noc Porte des Morts Sturgeon Bay Manitou Passage Ontario Hamilton Harbour Humber Bay Sodus Bay Toronto Bay Wellers Bay Superior Au Train Bay Chequamegon Bay Huron Bay Keweenaw Bay Pokegama Bay Superior Bay Thunder Bay Whitefish Bay Batchawana Bay Goulais Bay St. Clair Anchor Bay
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