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How to use the Maps

  • The GEO-PDFs: These can only be viewed in Acrobat 9 or higher. To avoid frustrating delays when moving about on-line, we strongly suggest you download and save the GEO-PDF and work on your computer rather than on the web. Having the PDF on your computer will also enable you to compare the information on one of the Google maps with information on the PDf but not on that Google map.
  • The Google Maps: The maps are large and may take a few seconds to load. On odd occasions, they may be there but not be displayed. Take a breath and hit the re-fresh button.
  • If you did not read them, there is important information on the Stories page, including Mapping Challenges and References & Disclaimers.


Access Maps Here

We will be posting 17 watersheds on the eastern half of the Oak Ridges Moraine in early 2012. For now, we offer the following maps of the Credit and solicit your feedback via OHNetwork.

Credit Watershed      PDF version - All Layers and Summary Data
Google Maps - Streams and Headwater Catchments
Google Maps - Wetlands and Lakes

Coming Soon

    Beaver River
    Black River
    Don River
    Duffins Creek
    Holland Watershed – East
    Holland Watershed – West
    Georgina Creek and Maskinouge River
    Humber River – East

    Humber River - Main
    Humber River- West
    Innisfill Creek
    Lynde and Pringle Creeks
    Pefferlaw and Uxbridge Brooks
    Rouge River and Petticoat Creek
    Scugog Watershed
    Upper and Middle Nottawasaga River