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Safeguarding
Green Lake 

FOR NEARLY 75 YEARS, WE'VE BEEN COMMITTED TO OUR LAKE

Safeguarding Green Lake’s future is our mission. Science is our guide. Stewardship is our legacy. 

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OUR CHALLENGE

Phosphorus pollution is Green Lake’s most urgent threat—fueling harmful algal blooms and degrading water quality.

Listed as impaired by the Wisconsin DNR in 2014, the lake continues to face risks, including low dissolved oxygen and invasive species.

OUR CAMPAIGN

In June 2025, we launched a bold $15 million campaign to protect the future of our lake—and thanks to early support from our community, we’re already making incredible strides toward that shared legacy.

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BECOME A GLA MEMBER

OUR IMPACT: PROGRAM PILLARS

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PHOSPHORUS REDUCTION

In collaboration with our partners, the GLA implements solutions to reduce Green Lake's incoming phosphorus pollution, which impairs water quality, fueling plant growth and degrading conditions.

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AIS
PREVENTION

To protect Big Green Lake’s water quality, the GLA minimizes the spread of new and existing aquatic invasive species (AIS) through preventative measures and community education. 

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DATA EVALUATION

The GLA gathers data and information that drives the Lake Management Planning Team to identify water quality problems, inform solutions, and track our collective progress. 

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COMMUNITY ACTIVATION

The GLA cultivates community engagement in the health of the lake by mobilizing our members, volunteers, and partners to act on Green Lake’s behalf. 

OUR LAKE

Decades of research have shaped every action we take. Dive into the science guiding our work to restore Green Lake.

OUR EVENTS

Our events bring people together in celebration and stewardship. From The Lake Ball to our State of the Lake Breakfast, each gathering supports a cleaner, healthier lake.

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OUR TEAM

Get to know the dedicated team behind the Green Lake Association—including our staff, Board of Directors, Committees, and Science Advisory Panel—working together to protect and restore Wisconsin’s deepest natural lake. 

BECOME A MEMBER

Become a GLA member and stand with a community committed to protecting Green Lake—today and for the future. 

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SUPPORT GREEN LAKE

Your donation fuels science, restoration, and long-term solutions that protect Green Lake’s future.

STAY IN THE KNOW!

Stay connected to Green Lake. Sign up for our emails and join a community working to protect the lake we all love. Our monthly newsletters and updates share inspiring stories, urgent news, and ways we can protect this treasured place—together.

Thanks for signing up for our e-mails!

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CONNECT WITH US

Green Lake Association

492 Hill Street, Suite 205

PO BOX 364

Green Lake, WI 54941

Email: info@greenlakeassociation.org

Phone: (920) 294-6480

Registered Charity: 39-1047600

© 2020 by Green Lake Association |  Terms of Use  |   Privacy Policy

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