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Spatial Coverage
- Superior, Lake[remove]25
- Superior, Lake.12
- Michigan6
- Hancock2
- Houghton2
- Keweenaw Waterway (Mich.)2
- Marquette2
- Marquette Bay (Marquette County, Mich.)2
- Whitefish Bay (Mich. and Ont.)2
- Wisconsin2
- Apostle Islands (Wis.)1
- Ashland1
- Chequamegon Bay (Wis.)1
- Duluth1
- Gargantua Harbor (Ont.)1
- Grand Marais1
- Grand Marais (Mich. : Harbor)1
- Grand Marais (Minn. : Harbor)1
- Harbors1
- Isle Royale (Mich.)1