WELCOME!
Over 30 years, Swan Lake Park has evolved from an inactive, obscure gravel pit to the centre piece of the thriving Greensborough community.
Described by ecologists as a “constructed wetland”, Swan Lake Park is home to a rich diversity of wildlife, but this wildlife is threatened by the increasing urbanization of the area and the poor water conditions in Swan Lake.
The Friends of Swan Lake Park (“FOSLP”) is focused on the development of a sustainable environmental program for Swan Lake and Swan Lake Park.
Three Critical Issues
FOSLP is focused on three critical issues related to the rehabilitation Swan Lake and preserving the biodiversity of Swan Lake Park.
- Having Markham recognize the ecological significance of Swan Lake and Swan Lake Park by:
- Designating Swan Lake and Swan Lake Park as Natural Heritage Network Lands giving the park the same environmental protection status as Milne Dam Conservation Park and Toogood Pond Park.
- Designating Swan Lake Park as a “City-wide Special Purpose Park” and recognizing the need for investments to support its critical role in the community.
- Developing stewardship programs to preserve and sustain the biodiversity of Swan Lake Park while minimizing the impact of the increasing urbanization on the wildlife in the park.
- Sustaining a comprehensive water quality program that addresses all of the issues in Swan Lake and reduces Swan Lake’s stormwater management role.
You can help by becoming a “Steward” of Swan Lake Park – help maintain the plants in the park and protect our turtles.
Learn more about these critical programs
- Read about FOSLP’s Stewardship Activities
- Read FOSLP’s Biodiversity Report (June 2025)
- Read FOSLP’s Submission to Reclassify Swan Lake and Swan Lake Park (June 2025)
- Swan Lake’s Phase 2 Water Quality Program
- Read about Markham’s recognition of FOSLP’s community efforts
Thank you to Our Financial Contributors and Volunteers

Over the past two years, FOSLP was fortunate in raising $40,000: a $25,000 grant from Hydro One and $15,000 from our corporate sponsors UA Local 46 – Plumbers and Fitters, CaTech, Walker Parker Real Estate and Amica Swan Lake.. These funds enabled us to hire aquatic biologists from R.J. Burnside and Associates (“Burnside”) and Natural Resource Solutions Inc. (“NRSI”) to provide their objective professional perspective for the development of the Phase 2 water quality plan. In 2026, FOSLP received a $2,000 grant from Park People to support our summer community park events.
Two Ways You Can Help
We are always looking for volunteers to support our rehabilitation efforts. If interested in helping to preserve Swan Lake Park, please register at Volunteer – Friends of Swan Lake Park
It takes $3,000 – $5,000 per year to support our programs. Please help by etransferring funds to treasurerfoslp@gmail.com. All donations appreciated.
Thank you to all the volunteers and individual donors that have supported our efforts since inception.
A Bird’s Eye View of Swan Lake Park
Take a drone tour of Swan Lake Park courtesy of Thomas Yee https://www.youtube.com/watch?v=pSIHpgpMz44

OUR GOALS
LATEST NEWS
Update on FOSLP Activities
Updates on our activities: 2026: Mid-Year Update (July 2026) 2025: Our Year in Review (January 2026)
FOSLP’s All-Candidate Survey (September 2026)
To candidates for Markham Council: Thank you offering to serve our community as a member of Markham Council. Volunteers with Friends of Swan Lake Park (“FOSLP”) are residents of the Greensborough area focused on the rehabilitation and stewardship of Swan Lake Park, a Markham municipal park located at 25
Markham’s Certificate of Appreciation (June 2026)
Markham’s Certificate of Appreciation June 2026 At Friends of Swan Lake Park’s June 2026 Loop-the-Lake Eco Fest event, Mayor Frank Scarpitti, on behalf of Markham Council, presented a certificate of appreciation to Friends of Swan Lake Park which states: “In recognition of your dedication to protecting and restoring Swan
Markham’s Swan Lake is back from the brink
Markham’s Swan Lake is back from the brink, showing ‘significant improvements’ in water quality. But will its largemouth bass survive? Volunteer group believes the water can be made clean enough for healthy bass to live in if city takes further steps to rehabilitate the former farmer’s pond located north of 16th
FOSLP Announces Partnership with York University Researchers
In March 2025, Friends of Swan Lake Park announced the launch of the Swan Lake Citizen Science Lab (“SLSCL”), a partnership with leading York University researchers. The SLSCL kicked off with a Design Workshop at York University’s new Markham campus on March 27, 2025 with a program that outlined the