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Additional watershed land use, zoning, and water quality maps hosted on the City's Watershed Homepage

This report presents the 2019 results from CWD's Algae Monitoring Program, part of an on-going study to assess source water quality in Cambridge reservoirs.

The annual event is a fun, alternative way to share information about Cambridge water and past participants have greatly enjoyed the experience.

The City of Cambridge announced that the City’s basketball courts, playgrounds, tot lots, and water play structures will reopen for public use on Monday, June 29. Residents should follow all applicable City and State Public Health guidance and guidelines related to the use of these facilities.

In 2019, CWD analyzed benthic macroinvertebrates in four tributaries in the Cambridge surface water supply watershed. These results are presented in the 2019 Benthic Macroinvertebrate Report.

This 2011 plan seeks to create a vision for how the Charles River may become an even more valuable resource than it already is, one that is more easily useable for everyone and provides a richer and more inviting experience.

POSTPONED: Now Sunday, September 22nd! Annual bike tour of the Cambridge Watershed. CWD staff and UrbanAdventours guide residents through the drinking water supply, stopping at critical locations, such as reservoir dams.

While the Commonwealth this week downgraded Cambridge and the Northeast Region from a Level 2 Significant Drought to a Level 1 Mild Drought, the City's primary water source remains at near recent historic lows. Cambridge residents, businesses, and institutions are urged to continue conserving water to help protect the City's water supply and support the reservoir's long-term recovery.

Leaving pet waste on the sidewalk or lawn allows harmful bacteria to be washed into stormdrains and into our water bodies.