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The Michigan Watersheds map illustrates that virtually all waterways in Michigan eventually flow into one of the Great Lakes, and therefore, our actions on land influence what happens downstream. The Michigan Watersheds map is a fantastic way to learn more about the fresh water resources of the Great Lakes.
The map is based on high-resolution geographic data that was processed by our partners at the USGS Great Lakes Science Center. It shows watershed boundaries at a local level, and also at a "greater" level, demonstrating how drainages can be divided on different scales.