St. Clair County Health Department

Division of Environmental Health


Sheri J. Faust

Environmental Health Educator


(810) 987-5306

Community Planning>Storm Water Program>Watershed Planning

Watershed Planning

What is a watershed?

A watershed is another word for a basin. It's an area of land thats shaped like a bowl and drains runoff and smaller streams to a larger body of water, like a river or lake. Everyone lives in a watershed!


 Which watershed do you live in?
Find where you live or work on the map (click to enlarge). The watersheds are color coded and named for the body of water to where all the land drains. St. Clair County is divided into seven different watersheds. Which watershed do you live or work in?

Black River             Lake Huron                   Belle River

Mill Creek               St. Clair River               Pine River

Anchor Bay

Consider this...
The condition of our rivers varies dramatically from over-fertilization in residential areas to failing septic systems in rural areas to runoff from development in suburban areas and to erosion in agricultural areas. Where does water go when it leaves your property? Is there anything that could wash off your property that you wouldn't want in a stream or lake? Remember only rain in the drain!

 How does a watershed work?
When it rains, water rushes off impervious surfaces like roads, parking lots and driveways. In St. Clair County, or heavy clay soils and tiled farm fields also act like concrete shedding water at rapid rates. All this runoff is called storm water. Storm water picks up pollution in it's path like cigarette butts, pet waste, pesticides, automotive oil, and fertilizers. These pollutants are conveyed through our county drain, road ditch and storm drain systems to end up directly in our rivers. This polluted storm water is harmful for activities like fishing, boating, swimming and drinking.


Watershed Planning
The U.S. EPA mandates that St. Clair County and twelve of our communities work together to address water quality. These entities are currently working together to outline the actions we must take to meet the regulations and improve the quality of our rivers, lakes and streams. This is called Watershed Planning, which brings together residents within the watershed to address water quality issues, regardless of political boundaries.


 You can help!
We want to hear your concerns and suggestions regarding water quality problems you see in and around your neighborhood and community. The best information we receive about water quality problems is from residents who live along a river, stream, creek, ditch or drain. Send your concerns directly to us.

Click here to view full size picture

How willing are you?

How willing are you help prevent pollution in your neighborhood?



* Change your car washing practices.

* Promptly pick up and dispose of your pet's waste.
* Sweep excess fertilizer and grass clippings from paved surfaces back onto your lawn.
* Dispose of household hazardous waste at the Smiths Creek Landfill.
* Landscape your yard with plants native to Michigan.


St. Clair County Metropolitan Planning Commission

200 Grand River, Suite 202 | Port Huron, MI | 48060 | 810.989.6950