Each of us is a resident of a county or town
in the State of Michigan. We are also residents of a watershed.
For example, people living in Midland, Michigan reside in the Tittabawassee
watershed because water falling on this city is delivered to the
Tittabawassee River. Watersheds can be part of other, larger watersheds:
Tittabawassee River > Saginaw River > Saginaw
Bay > Lake Huron > Great Lakes > St. Lawrence
River > Atlantic Ocean
You can find out what watershed you live in by going to the U.S. EPA
Your Watershed web site.
Major Watersheds of Michigan (yellow boundaries).
Click to enlarge.
What are the blue and brown boundaries?