Great Lakes watershed locator
Search the map to find which Great Lakes Basin watershed corresponds to the selected location.
After searching, you can also drag the map marker within the map to select a new location.
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|Connecting Channel Watersheds|
|Great Lakes-St. Lawrence River Basin|
|Lake Erie Watershed|
|Lake Huron Watershed|
|Lake Superior Watershed|
|St. Lawrence River Watershed|
|Lake Ontario Watershed|
Updated: January 23, 2020