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A volunteer association protecting Chebacco Lake and its watershed across Essex and Hamilton, Massachusetts, since 1985—bringing the community together with lake reports, wildlife sightings, fishing information, photos, events, and trusted lake resources.

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South Hamilton, MA 01982

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15 published articles

Featured image: Algae Lake PhotoWater Quality

January 21, 2024

Algae Blooms

August 2025: Chebacco Lake is experiencing a second cyanobacteria event in 2025 with a different species, Microcystis (suspected).

CLWA Communications Team · CLWA Communications Team

Algae BloomsCyanobacteriaPublic HealthLake Monitoring

Featured image: Snowy Social community event announcement.Events & Community

January 29, 2023

Snowy Social: February 4 Community Gathering

This archived announcement invited Chebacco Lake supporters to a February 4 Snowy Social in Manchester-by-the-Sea.

CLWA Communications Team · CLWA Communications Team

Snowy SocialCommunityEvents

Featured image: CLWA graphic introducing the question, How Healthy Is the Lake?Water Quality

January 29, 2023

How Healthy Is the Lake?

A historical CLWA monitoring update describes the start of a multi-year water-quality study and preliminary evidence of deep-water oxygen depletion.

CLWA Communications Team · CLWA Communications Team

Lake MonitoringDissolved OxygenLake Research

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