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Did Ja Know? Physical Facts about Minnesota's Portion of Lake Superior

Graphic: Minnesota Border

Physical Facts about Minnesota's Portion of Lake Superior

Minnesota encompasses 8% of Lake Superior's surface and
18% of its volume.

As on land, political boundaries divide the Great Lakes. Lake Superior is governed and managed by the U.S. states of Minnesota, Wisconsin, Michigan and the Canadian province of Ontario. Here are the physical statistics on Minnesota's portion of Lake Superior.

  • Surface Area: 2,626.7 mi2 (6,803.2 km2)
    % of Lake Superior, by Surface Area: 8%

  • Watershed Area: 6,200 mi2 (16,000 km2)
    % of Lake Superior, by Watershed Area:12.6%

  • Shoreline Length (including islands): 219.3 mi (352.9 km)
    % of Lake Superior, by Shoreline Length: 8%

  • Volume: 527.3 mi3 (2198.0 km3)*
    % of Lake Superior, by Volume: 18.2%*

  • Gallons: 580 trillion gallons (2,197,984,465,908,000 L)*

  • Average Depth: 284.3 ft (86.7 m)*

  • Deepest Spot: Three "pockets", two approximately 5 miles offshore from Split Rock Lighthouse and one approximately 4 miles offshore from Silver Bay, exceed 850 ft (260 m).

*This is an approximate value derived from an isobath map created of Minnesota's portion of Lake Superior.

Data Source: Minnesota Department of Natural Resources, 2010


By Sea Grant Staff
June 2015

Return to June 2015 Seiche



This page last modified on March 23, 2017     © 1996 – 2017 Regents of the University of Minnesota     The University of Minnesota is an equal opportunity educator and employer.
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