Eight-two per cent of Toronto is urbanized.  Apart from a few parks, the only remnant natural areas are the deeply incised, wooded ravines and valleys associated with the Rouge, Don and Humber rivers, and their tributaries.  Wide floodplains along the valley floors, combined with steep forested slopes, inhibit the use of these areas for future development.  

For a high resolution PDF of the map, go to Associated Documents below.

For more information on The State of Greenlands Protection in South-Central Ontario click here.