Lake Ontario

Lake Ontario is the 14th largest freshwater lake in the world based on surface area.  However, it is the smallest of the Great Lakes based on surface area.

Surface Area: 7,340 square miles

Volume: 393 cubic miles

Length: 193 miles

Width: 53 miles 

Shoreline: 712 miles 

Maximum Depth: 802 feet

Average Depth: 283 feet

Total Basin Drainage: 24,720 square miles

Retention/Replacement Time: 6 years 

Outlet: St. Lawrence River to the Atlantic Ocean

Major Diversions: None 

Point of Interest: Home to the oldest lighthouse on the U.S. side of the Great Lakes

Toronto skyline on Lake Ontario.