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Rideau Lakes
Environmental Foundation

We act together to ensure the health and preservation
of the lakes we all love.

Our Work

RLEF is a registered Canadian charitable foundation supporting on-the-ground environmental projects on Upper, Lower, and Big Rideau Lakes, in Ontario, Canada.  We provide modest grants to support activities that further our mission. We also monitor the regulatory environment and intervene where necessary.

Lake Health


Shoal Marker

Water Safety

Taking a Core Sample

Environmental Research

To develop our understanding of the science that underpins our environmental activities, the RLEF has established a program of small grants to support research projects. We are interested in receiving proposals from scientific researchers working in any discipline that contributes to our knowledge of the flora, fauna, or environment of the Rideau Lakes.

About Us

Our Organization

RLEF is a registered Canadian charity, managed by volunteers. Our overheads are low, and the vast majority of your donation will flow directly to protecting the water and lakes that we love.

Interested in helping out?  

Please contact us.

Give Online

We use Canada Helps – a trusted service provider – to process our donations on-line, ensuring a secure transaction.

As a bonus, you’ll get your tax receipt instantly.

Please Give Generously.

Send Us a Cheque

If you would rather use regular mail, you can send your donation by post to

RLEF, PO Box 93, Portland, Ontario K0G 1V0

We thank you for your support.

Enquire About Funding

RLEF provides modest grants to support activities that further our mission.

The Call for Proposals for Small Grants for Scientific Research on and around the Rideau Lakes – 2021 has now closed.

If you have a project that you think we might be interested in, please contact us.

Support Us

We need your help to do our work.

Your donation to RLEF goes directly towards supporting environmental projects on the lake you love.

Please remember the lake in your tax planning, and give generously.

Donations are processed online via Canada Helps.

From Our Donors

“Thanks for doing good work on our behalf. The Westport situation needs ongoing attention … to protect the Rideau Heritage Waterway from sewage pollution.”

Shoal Marker

“For the Doug Good Shoal Marker fund, in honour of his unswerving commitment to his community.”

“Impressed by the bass study.
Interested in studies on algae.”

Latest News

The Rideau Lakes Need your Help

I am writing on behalf of the Rideau Lakes Environmental Foundation (RLEF), a non-profit foundation …

Public Meeting – Rideau Lakes Campground Study – August 25

The Township of Rideau Lakes has called a public meeting on Thursday August 25th to review the repor…

RLEF Funds Research for Summer 2022

Three Research Projects Funded The Rideau Lakes Environmental Foundation has again funded several re…

Cover of Issues and Options Report

Feedback wanted: TRL Campground Land Use Study

Temporary campsite or mobile home park? Changing land use patterns in what were once transient campg…

Screenshot of article from The Star.

Algae a threat to Rideau Lakes Health

BRLA and URLA urge action on storm runoff The presidents of the Big Rideau Lake Association and the …

2022 Research Projects in Review

Understanding the lake is key to looking after it. So the RLEF has once again launched a Call for Pa…

We need your help to do our work.

Your donation enables the Rideau Lakes Environmental Foundation
to continue to protect and preserve the lakes we all love.

Please give generously.