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Lake Ontario Overview

Lake Ontario is the easternmost of the Great Lakes and the smallest in surface area (7,340 sq mi, 18,960 km), although it exceeds Lake Erie in volume (393 cu mi, 1,639 km). It is the 14th largest lake in the world. When its islands are included, the lake has a shoreline that is 712 miles (1,146 km) long. As the last lake in the Great Lakes’ hydrologic chain, Lake Ontario has the lowest mean surface elevation of the lakes at 243 feet (74 m) above sea level; 326 feet (99 m) lower than its neighbor upstream. Its maximum length is 193 statute miles (311 kilometres; 168 nautical miles) and its maximum width is 53 statute miles (85 km; 46 nmi).The lake’s average depth is 47 fathoms 1 foot (283 ft; 86 m), with a maximum depth of 133 fathoms 4 feet (802 ft; 244 m).The lake’s primary source is the Niagara River, draining Lake Erie, with the St. Lawrence River serving as the outlet. The drainage basin covers 24,720 square miles (64,030 km2).As with all the Great Lakes, water levels change both within the year and among years. These water level fluctuations are an integral part of lake ecology, and produce and maintain extensive wetlands.The lake also has an important freshwater fishery, although it has been negatively affected by factors including over-fishing, water pollution and invasive species.

Lake Ontario Ports of Call Cruise Discounts from BoostVacations.com

Detailed Map of Lake Ontario

Lake Ontario Detailed Map Ports of Call Cruise Discounts from BoostVacations.com