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.

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Latest News

GRCA Issues Flood Warning Update – Lake Ontario Shoreline

Flood Potential: High The Ganaraska Region Conservation Authority advises that water levels on Lake Ontario are stabilizing and should start to decline over the next week or two albeit at a very slow rate. Having reached record elevations, it will take several weeks for the water levels to recede below critical flood thresholds. The potential…

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Invasive Plants Pose Problems

Invasive plants are species that have been accidentally or deliberately introduced to an area outside of their normal range, and which due to their rapid spread, become a threat to the environment, the economy or to human health. One invasive plant that has spread rapidly into Northumberland County is pale swallowwort, also known as dog-strangling…

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