St. Catharines in the context of "General Motors Corporation"

Lake Ontario (French: Lac Ontario) is one of the five Great Lakes of North America. It is bounded on the north, west, and southwest by the Canadian province of Ontario, and on the south and east by the U.S. state of New York. The Canada–United States border spans the centre of the lake. On the Canadian side, the major cities are Kingston, Mississauga, Toronto, Hamilton, and St. Catharines. On the American side, the major cities are Rochester and Watertown.

The last in the Great Lakes chain, Lake Ontario serves as the outlet to the Atlantic Ocean via the Saint Lawrence River, comprising the western end of the Saint Lawrence Seaway. Its primary inlet is the Niagara River from Lake Erie. The Long Sault control dam, primarily along with the Moses-Saunders Power Dam regulates the water level of the lake.

The Welland Canal is a ship canal in Ontario, Canada, and part of the St. Lawrence Seaway and Great Lakes Waterway. The canal traverses the Niagara Peninsula between Port Weller on Lake Ontario and Port Colborne on Lake Erie, and was built because the Niagara River—the only natural waterway connecting the lakes—was unnavigable due to Niagara Falls. The Welland Canal enables ships to ascend and descend the Niagara Escarpment, and has followed four different routes since it opened.

The Welland Canal passes about 3,000 ships which transport about 40 million tonnes (88 billion pounds) of cargo a year. It was a major factor in the growth of the city of Toronto, Ontario. The original canal and its successors allowed goods from Great Lakes ports such as Cleveland, Detroit, Milwaukee, and Chicago, as well as other heavily industrialized areas of the United States and Ontario, to be shipped to the Port of Montreal or to Quebec City, where they were usually reloaded onto ocean-going vessels for international shipping.

Grimsby is a town on Lake Ontario in the Niagara Region, Ontario, Canada. Grimsby is at the eastern end of the Hamilton Census Metropolitan Area. It is named after the English fishing town of Grimsby in north-east Lincolnshire. The majority of residents reside in the area bounded by Lake Ontario and the Niagara Escarpment, home to a section of the Bruce Trail.

Grimsby has experienced significant growth over the past two decades due to its position between Hamilton and St. Catharines. Growth is limited by the natural boundaries of Lake Ontario and the Niagara Escarpment. Some residents feel development is detrimental to the town as orchards close to the town centre are used for residential development; however, most of the orchards in Grimsby were replaced by houses between the 1950s and 1980s, and very few orchards remain.