Slideshow Featured Content

  • Boston Light

    Protecting, Restoring and Enhancing Estuarine Resources

    MassBays is dedicated to protecting, restoring, and enhancing the estuarine resources of Massachusetts and Cape Cod Bays in five regions: Upper North Shore, Lower North Shore, Metro Boston, South Shore, and Cape Cod

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  • Water Sampling in Green Harbor River

    Ecological Restoration

    Realizing ecological improvements through partnership at the Green Harbor River Restoration project in the South Shore region

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  • Rowboat in Marsh

    Protecting and Restoring Salt Marsh

    Managing multiple uses of the Great Marsh in the Upper North Shore region

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  • Drains to Waterways

    Stormwater Management

    Working to improve the quality of stormwater to restore our estuarine resources in the South Shore region

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  • Thompson Island Salt Marsh

    Natural Resource Planning in an Urban Setting

    Habitat protection and restoration planning for estuarine resources in the Metro Boston region 

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  • Herring Run

    Monitoring Local Fish Populations

    Monitoring and restoring our herring runs in the Cape Cod and other regions

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  • Invasive tunicates in Boston Harbor

    Monitoring for Non-Native Species

    Performing long-term monitoring for non-native species in the Salem Sound and other regions

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Our Mission

MassBays is an EPA National Estuary Program dedicated to protecting, restoring, and enhancing the estuarine resources of Massachusetts and Cape Cod Bays. We envision a network of healthy and resilient estuaries, sustainable ecosystems that support the life and communities dependent upon them. We facilitate partnerships to prompt local, state, and federal action and stewardship, convening stakeholders on the local and regional level, providing scientific basis for management decisions, and educating decision makers about problems and solutions. Learn more About the MassBays Program .

MassBays Annual Report

MassBays is pleased and excited to announce availability of our first Annual Report, " Partnering for Coastal Habitats - Annual Report of the Massachusetts Bays National Estuary Program pdf format of MassBays Annual Report 2013
The report surveys MassBays' work in 2013 and highlights the significant progress we have made in collaboration with numerous invaluable partners from Provincetown to Salisbury. Please contact Lisa Engler for more information.

MassBays Newsletter

Read the official newsletter of the Massachusetts Bays National Estuary Program. Subscribe to our newsletter and stay up-to-date on the activities of MassBays and our partners; gather information on the health of Massachusetts and Cape Cod Bays themselves; and learn how you can get involved.


The Massachusetts Bays National Estuary Program is a cooperative venture of the Massachusetts Executive Office of Energy and Environmental Affairs, the Massachusetts Office of Coastal Zone Management, and the U.S. Environmental Protection Agency.

Commonwealth of Massachusetts - Deval L. Patrick, Governor
Executive Office of Energy and Environmental Affairs - Maeve Vallely Bartlett, Secretary
Office of Coastal Zone Management - Bruce K. Carlisle, Director
Massachusetts Bays Program - Pamela A. DiBona, Executive Director