ANSWERS: 3
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It's been varying by about two to three feet every year.
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According to a topographic map that I found at www.mapquest.com, it looks like Lake Superior is at an elevation 580'.
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Surface Elevation: approx. 602 feet/183 meters above sea level. Largest freshwater lake in the world, one inch of surface water is equal to 553 billion gallons. Superior is the coldest, deepest, and highest in elevation of any of the Great Lakes.
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