Region
Michigan
Oakland County
9
Lower Peninsula
6
Grand Traverse County
4
Ingham County
4
Saginaw Aquifer (Mich.)
4
Wisconsin
4
Kalamazoo County
3
Kent County
3
Baraga County
2
Bay County
2
Clinton County
2
Eaton County
2
Grand Rapids Region
2
Huron County
2
Indiana
2
Upper Peninsula
2
Wurtsmith Air Force Base
2
Wurtsmith Air Force Base (Mich.)
2
Addison (Township)
1
Battle Creek
1
Battle Creek Region
1
Berrien County
1
Bloomfield Township (Oakland County)
1
Brandon Township
1
Cadillac Region
1
Cass County
1
Chippewa County
1
Clam River Watershed (Mich.)
1
Commerce (Township)
1
Detroit
1
Grand Rapids Metropolitan Area
1
Grand Rapids Region (Mich.)
1
Great Lakes (North America)
1
Huron County (Mich.)
1
Iron Mountain
1
Kalamazoo
1
Keweenaw Bay Indian Community, Michigan
1
Kingsford
1
LaPorte County
1
Lake Michigan
1
Lansing
1
Lansing Region
1
Marquette County
1
Milford
1
Minnesota
1
Monroe County
1
Ohio
1
Oxford (Township)
1
Rose (Oakland County)
1
more ...