Working with you
to keep Casco Bay blue

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Friends of Casco Bay’s mission is to improve and protect the environmental health of Casco Bay. 


Our areas of work are:


We “listen” to Casco Bay by collecting water quality data, enabling us to identify threats to the health of the Bay. We track water quality year-round from our three Continuous Monitoring Stations, and collect seasonal water samples from 24 locations around the Bay. 


Advocating for clean marine water is at the core of our work. Led by our chief advocate, the Casco Baykeeper, our staff and community lend the Bay our voices. We advocate for the health of our coastal waters in town halls and the state legislature, and work with businesses and environmental agencies to promote clean water policies and practices

Community Engagement

The name Friends of Casco Bay was chosen with purposeful intent. It takes a community to care for the Bay. We host events to educate the public on issues affecting the Bay and coordinate volunteer efforts to improve its health. We are proud to say that our volunteers and supporters are among the Bay’s most dedicated ambassadors.


Get to know us. Read our stories.

We are hiring: Community Organizer and Volunteer Coordinator

December 2, 2022

A full time position with a comprehensive benefits package Friends of Casco Bay is hiring a skilled Community Organizer and Volunteer Coordinator to join our… Read more

Casco Bay Heats Up

November 29, 2022

30 years of temperature data show waters in Casco Bay are warming rapidly. Casco Bay is warming rapidly, according to Friends of Casco Bay’s 30-year-and-growing… Read more

Listening to Casco Bay: the Clean Water Act, Climate Change, and More

November 8, 2022

We recently hosted an informative and thought provoking conversation at Listening to Casco Bay: the Clean Water Act, Climate Change, and More.  Casco Baykeeper Ivy… Read more


Friends of Casco Bay’s Successes



How you can help:


Photograph by Kevin Morris


Photograph by Dave Dostie

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Cover photo: Photograph by Kevin Morris