Promoting Watershed Security in Ontario – Water for People and for Nature

Index to Maps

Please note that the Google Maps below are large files and may take a few seconds to load. On odd occasions, the maps may be there but not be displayed.

If they don’t appear instantly, take a breath and hit the re-fresh button.


Watershed Hyperlinks
Credit Watershed      OHMap of the Credit
Grand Watershed      OHMap of the Grand
See the note on the Grand Watershed below.
Kawartha Watershed      OHMAP of Kawartha
Lake Simcoe Watershed


OHMap of Lake Simcoe

Rouge River Watershed OHMap of the Rouge

Notes:  While Fleming College performed much of the initial work on most of the maps here, the OHI thanks the Grand River Conservation Authority for the provision of their raw data directly to us. Rebecca Ma, our GIS specialist, used the data to create the Grand map on this website. We thank the GRCA. Please note that the GRCA also maintains an extensive set of layers on their website, at Grand River Information Network, which may be of further interest.