Welcome to the Ganaraska Region Conservation Authority

The Ganaraska Region Conservation Authority's overall goal is the conservation, restoration, development and management of natural resources on a watershed basis while providing for the public enjoyment of the lands it oversees.

The Ganaraska Region Conservation Authority (GRCA) was formed in October 1946 under the Conservation Authorities Act and is one of the oldest conservation authorities in Ontario.

The watersheds of the GRCA covers an area of 361 square miles from Wilmot Creek in Clarington to east of Cobourg from the south shore of Rice Lake down to Lake Ontario. This area includes seven municipalities in whole or in part: Township of Cavan-Monaghan, Town of Cobourg, Township of Alnwick-Haldimand, Township of Hamilton, Municipality of Port Hope, City of Kawartha Lakes, Municipality of Clarington.


Latest News

GRCA Issues Flood Outlook for Lake Ontario Shoreline

Flood Potential: Low The Ganaraska Region Conservation Authority advises that heavy spring rains in the Lake Ontario watershed have caused higher than normal water levels across Lake Ontario. The lake level is currently at 75.5 meters above sea level, which is 60cm above average for this time of year and 40cm above where it was…

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GRCA Issues Watershed Conditions Statement

Water Safety Flood Potential: Low The Ganaraska Region Conservation Authority advises that a low pressure system is moving into Southern Ontario this evening ahead of a second storm later this week. Rain is expected to start overnight with total rainfall amounts of 20 to 30mm by noon tomorrow, when the system is expected to taper…

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