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Welcome!

Welcome to the Kawartha Lake Stewards Association (KLSA). Through education, research, advocacy, and hands-on stewardship, KLSA works to protect the Kawartha Lakes, enhance water quality, and support sustainable practices. Our efforts help to ensure the long-term ecological balance of the lakes, making them a vibrant resource for future generations. Join us in our mission to safeguard this precious environment—together, we can make a lasting impact on the health of our beloved lakes.

News and Announcements

Click here for all news and announcements. 

Activity Highlights

Water Quality Monitoring

KLSA has been involved in lake water quality monitoring since 2001. Volunteers can participate in the KLSA E.coli testing program, or the Lake Partner Program run by the Ministry of the Environment, Conservation and Parks in partnership with the Federation of Ontario Cottagers’ Associations (FOCA). Results for both programs are published in the KLSA annual Lake Water Quality Report.

Natural Edge

KLSA is a regional delivery partner of Watersheds Canada’s Natural Edge Program. The Natural Edge is a shoreline naturalization program available to waterfront property owners to plant native trees, shrubs, groundcovers, wildflowers, and grasses along the water’s edge.

Oxygen and temperature monitoring sites in the kawarthas

Lake Oxygen and Temperature Monitoring

Volunteers track changes in dissolved oxygen and water temperature in our lakes. This is done by using a probe to take measurements from surface to bottom in the deepest part of each lake, and by installing portable logging devices in shallow water on docks and buoys.

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