Smallest and easternmost of the Great Lakes of North America. Bounded by New York and Ontario, and with the U.S.-Canada border passing through it, the lake is roughly elliptical; its major axis, 193 mi (311 km) long, lies nearly east to west, and its greatest width is 53 mi (85 km). The Niagara River is the lake's main feeder. There are five islands at its eastern end, where the lake discharges into the St. Lawrence River near Kingston, Ont. The Welland Canal and the Niagara River connect it to Lake Erie to the southwest. It was visited by Samuel de Champlain in 1615; its early French name was Lac Frontenac. Ports on the lake include Toronto and Hamilton, Ont., and Rochester and Oswego, N.Y.
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Sturgeon Lake is a lake in the Kawartha Lakes region of Ontario, Canada. It is part of the Trent-Severn Waterway. The lake is Y shaped and has the communities of Lindsay, Fenelon Falls, Sturgeon Point and Bobcaygeon at the north-west, south, central and north-east points of the Y respectively. The lake is approximately from the southern to the north-eastern extremes, the longer axis.
The Scugog River flows into the lake at the southern apex. Cameron Lake also flows into this lake, via the Fenelon River at the north-western extreme. Emily Creek empties into the lake at the middle south.
The lake outflow is through the Big Bob and Little Bob channels of the Bobcaygeon River at the north-east of the lake.