Skip to content
You are here > Home > Your Ministry > Land Use Planning > The Oak Ridges Moraine > More facts about the Oak Ridges Moraine

Link to Follow usFollow us

More facts about the Oak Ridges Moraine

Email this page

  • The Oak Ridges Moraine is an irregular ridge of sandy hills stretching 160 kilometres from the Trent River in the east to the Niagara Escarpment in the west.

  • It crosses 32 municipalities in three regions (Peel, York and Durham) and four counties (Dufferin, Simcoe, Peterborough, and Northumberland) and the City of Kawartha Lakes.

  • Sixty-five per cent of the area of the Oak Ridges Moraine lies within the Greater Toronto Area.

  • The Oak Ridges Moraine contains the largest concentration of headwater streams in the Greater Toronto Area. The Moraine acts as a recharge area for groundwater.

  • The Moraine provides a natural habitat for sensitive and threatened plant and animal species not found elsewhere in the Greater Toronto Area.

  • The Greenbelt includes the protected lands of the Oak Ridges Moraine, the Niagara Escarpment, and the headwaters of all major watersheds in the western Greater Toronto Area.

  • Because the moraine is a rich resource of sand and gravel, it has become one of the main sources for the aggregate industry serving the Greater Toronto Area.