Grand River Watershed

Grand River Watershed

The Grand River Watershed encompasses all of Cannon Township and most of Kent County. The Grand River runs from Hillsdale and Jackson Counties and flows about 270 miles to Lake Michigan at Grand Haven. The Grand River is Michigan's longest river and its watershed also covers the largest area in the state at 5,572 square miles.

Major tributaries to the Grand River are the Red Cedar River, Looking Glass River, Maple River, Flat River, Thornapple River, and the Rogue River. The Grand River goes through Jackson, Lansing, Ionia, Lowell, Ada, Grand Rapids and Grand Haven on its way to Lake Michigan. The Grand River Watershed has so much area that Grand Valley State University's Annis Water Resources Institute split it into two projects, the Lower Grand and Upper Grand River. The Lower Grand River Watershed includes more than 3,020 square miles. It includes the counties of Muskegon, Ottawa, Kent, Montcalm, Ionia, Eaton, Barry, Newaygo, Allegan, and Mecosta.

Annis Water Resources Institute has useful tools and information online that can be accessed by going to

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Lower Grand River Organization of Watersheds

Not only does Cannon Township encompass the watershed for Bear Creek, we are also a part of the larger watershed for the Grand River.  As such, Cannon Township is a member of the Lower Grand River Organization of Watersheds (LGROW).  You can visit LGROW's website at or contact Wendy Ogilvie at for more information.
WMEAC launches Fifteen to the River!
Fifteen to the River is a collaborative effort between West Michigan Environmental Action Council, the City of Grand Rapids and others to educate local residents about the impact of stormwater runoff and HYDROFILTH on West Michigan's water resources.
In Grand Rapids, it takes only 15 to 30 minutes for contaminated rain and stormwater to reach the Grand River via the municipal stormwater sewer or by flowing directly into the river or its tributaries.
Check out our Fifteen to the River Stormwater animation and feel free to share it with others: