Related by context. Frequent words. (Click for all words.) 66 Lake Superior 63 Lake Erie 57 Midwest 52 Upper Peninsula 52 Mississippi River 50 Asian carp 49 Michigan 49 Chesapeake Bay 49 Midwestern 48 invasive species 47 Sault Ste 47 St. Clair 47 Huron 46 Muskegon 46 waterways 46 Arctic 46 Wisconsin 46 Chippewa 45 lakes 44 Kalamazoo 44 Calumet 44 Port Huron 44 Sault 43 Great Plains 43 Gulf Coast 43 Niagara 43 Portage 43 Saginaw 42 Minnesota 42 oceans 42 Traverse City 42 Grand Rapids 42 Indiana 42 Sandusky 42 Inland 42 Macomb 42 Illinois 42 Baltic Sea 41 Southeastern 41 Battle Creek 41 Lansing 41 Mid Atlantic 41 waterway 40 Heartland 40 Northwest 40 Bemidji 40 Northern 40 freshwater 40 Lakeshore 39 Puget Sound 39 Three Rivers 39 Northland 39 Grand Haven 39 Kenosha 39 Everglades 39 DNR 39 Rockford 39 Northeast 39 La Crosse 39 Petoskey 38 Front Range 38 Pacific Northwest 38 Ohio 38 Duluth 38 Vermilion 38 Erie 38 River 38 Twin Cities 38 walleye 38 Environmental Protection Agency 38 carp 38 St. Croix 38 Evansville 38 Thunder Bay 38 Kankakee 38 Sarnia 38 Quad Cities 38 Superior 37 Ontario 37 Fond du Lac 37 arctic 37 lake 37 Manitoba 37 lakefront 37 Missouri 36 Plains 36 steelhead 36 watersheds 36 Enbridge 36 Atlantic Ocean 36 Detroit 36 Gov. Jennifer Granholm 36 Oshkosh 36 Niagara Falls 36 Dubuque 36 Eau Claire 36 Ann Arbor 36 North Dakota 36 Potomac River 36 Manitowoc 36 St. Marys