Is Lake Ontario above sea level?

The 30-mile-wide eastern extremity of the lake is crossed by a chain of five islands, where the lake discharges into the St. Lawrence River near Kingston, Ont. With a mean surface elevation of 243 feet (74 m) above sea level, Lake Ontario has a mean depth of 283 feet (86 m), and its deepest point is 802 feet (244 m). read more

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. read more

4. Lake Ontario . Lake Ontario is the fifth largest of North America's five Great Lakes and the fourth largest in Ontario by surface area with approximately 7,340 square miles, lying at an elevation of 246 feet above sea level with 802 feet maximum depth. The primary inlet for Lake Ontario is the Niagara River. read more