Lake Ontario

Ontario, which lies on the eastern end of the region, has the smallest surface area of the five Great Lakes. It is 193 miles long and 53 miles wide. Its average depth is 283 feet.  

Ways to Connect

Great Lakes watershed gets new signs

May 27, 2016

The next time you’re taking a leisurely drive through the region’s Great Lakes watershed, you'll find some new signage displayed along the way.

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