Great Lakes Weather and Climate - Size of Lake Michigan

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Mighty Lake Michigan
Lake Michigan stretches approximately 307 miles (494 km) from north to south across a breadth of 118 miles (190 km) between the states of Wisconsin and Michigan. Its average depth is 279 feet (85 meters) and its maximum depth is 925 feet. The world's largest freshwater dunes line the lakeshore. The total length of the shoreline, including islands is 1,638 miles, or 2,633 km. Lake Michigan water flows through the Straits of Mackinac into Lake Huron. They are actually two lobes of the same lake, retaining water for an average of 99 years.

Follow these steps to measure the surface area of Lake Michigan:


1. Use the contrast tools to see the shoreline more clearly.


2. Use the pencil tool to trace around the outer edge of the Lake.


3. Click the calculator tool to automatically calculate the area.


4. Submit answer and get feedback below.


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This application lets you estimate the size of Lake Michigan using satellite imagery.



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This application is used for a Lake Michigan size quiz.


Learn more about the dimensions of the other Great Lakes by clicking on these images.

right arrow Lake Michigan thumbnail right arrow Lake Superior thumbnail right arrow Lake Huron thumbnail right arrow Lake Erie thumbnail right arrow Lake Ontario thumbnail
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