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Lake Ontario is the easternmost of the Great Lakes and the smallest in surface area (7,340 sq mi, 19,000 km 2), although it exceeds Lake Erie in volume (393 cu mi, 1,640 km 3). It is the 13th largest lake in the world .
Lake Ontario is similar to Lake Erie in length and breadth (193 miles by 53 miles). Yet with its greater average depth (approximately 283 feet), Lake Ontario holds almost four times the volume (395 cubic miles) and has a retention time of about 6 years.
May 17, 2018 · Lake Ontario [1], 7,540 sq mi (19,529 sq km), 193 mi (311 km) long and 53 mi (85 km) at its greatest width, between SE Ont., Canada, and NW N.Y.; smallest and lowest of the Great Lakes [2]. It has a surface elevation of 246 ft (75 m) above sea level [3] and a maximum depth of 778 ft (237 m).
Lake Ontario is the easternmost of the Great Lakes and the smallest in surface area (7,340 sq mi, 18,960 km2), although it exceeds Lake Erie in volume (393 cu mi, 1,639 km3). It is the 13th largest lake in the world. When its islands are included, the lake's shoreline is 712 miles (1,146 km) long.
It has an awe-inspiring vastness, with an average depth of 802 feet (244 meters), a surface elevation of approximately 243 feet (74 meters) above sea level, and a water surface area of 7,340 sq miles (19,009 square kilometers).
Lake Ontario is shared by the Canadian province of Ontario and the U.S. state of New York. The largest city on the American side is Rochester; the largest on the Canadian side is Toronto. Both countries' cities of Niagara Falls are nearby. The Thousand Islands region lies at the lake's outlet.
Lake Ontario is the smallest of the Great Lakes in North America, but its maximum depth (802ft; 244m) is deeper than lake Erie's (210ft) and Lake Huron's (750ft). It forms most of the border between Ontario in Canada and New York in the United States of America.
