• An Estuary of
    National Significance

    Improving Long Island Sound’s water quality helps
    sustain one of the region’s most beautiful resources.

    Photo: Eelgrass off Fishers Island, courtesy of Cornell Cooperative Extension Marine Program

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  • Maintaining
    Healthy Habitats

    The Sound’s habitats are home to more
    than 1,200 species of invertebrates,
    170 species of fish, and dozens of
    species of migratory birds.

    Photo: A least tern eats a mummichog at Sandy Point in New Haven. Photo by Patrick Comins

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  • Protecting Watersheds

    The Long Island Sound Futures Fund helps fund watershed groups to protect
    habitats and improve water quality in tributaries of Long Island Sound.

    Photo: An early fall view of the Eightmile River, a tributary of the Connecticut River, in Lyme, CT. Photo by Jack Silky.

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  • Conserving
    Natural Areas

    The goals of the Long Island Sound
    Stewardship Initiative are to conserve
    natural areas, increase access to the
    Sound, and plan for multiple uses.

    Photo: Hiking at Pleasant Valley Preserve. Photo by Jerry and Marcy Monkman

    Learn More

Stewardship Atlas


Explore the 33 Stewardship Areas along the coast of  Long Island Sound.
View Atlas »

Reducing Nitrogen


EPA is proposing to aggressively reduce nitrogen, a nutrient that in excess leads to poor water quality.
View Strategy »

Photo of the Month

A breezy Sunday morning at Marshlands Conservancy in Rye
View Multimedia Gallery »

Make a Difference

Follow our social media campaign this summer and fall.
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Learn more about the grant program  helping to restore and protect Long Island Sound, including restoring wetlands at Stratford Point. See Long Island Sound Futures Fund.


News Room


$2.04 Million in Grants Will Improve the Health of Long Island Sound - $1.05 million awarded to support 15 projects benefiting New York. Continue Reading


$1.29 Million Awarded in Grants to Improve the Health and Ecosystem of Long Island Sound - Top federal and state environmental officials from New England announced 20 grants totaling $1.29 million to local government and community groups to improve the health and ecosystem of Long Island Sound. Continue Reading


2017 Work Plan - The 2017 Long Island Sound Study National Estuary Program Summary Work Plan is now available in LISS's media center. Continue Reading


#DontTrashLISound - Today is International Coastal Cleanup day in #LISound and around the world. Here are the top 10 trash items collected… Continue Reading


Futures Fund Grant Program Releases 2017 Request for Proposals - Approximately $2 million will be available for clean water projects, habitat restoration and stewardship, and citizen engagement. Continue Reading

Citizens Advisory Committee (Fourth Quarter) -

When: December 14, 2017 @ 9:00 am – 2:30 pm
Where: Housatonic Community College, 900 Lafayette Blvd, Bridgeport, CT 06604, USA

Dec. 14 Agenda

Continue Reading


Sound Bytes Spring 2017 - Read the Spring 2017 issue of Sound Bytes. Download the Spring 2017 issue as a PDF here. Continue Reading


Year in Review 2016 Issue - The spring 2017 issue of Sound Update focuses on Long Island Sound Study's Year in Review of 2016. Continue Reading


Volunteer for the Sound February Newsletter - Read the February 2017 issue of the Volunteer for the Sound newsletter. Continue Reading


Sound Bytes Winter 2017 - Read the Winter 2017 issue of Sound Bytes. Download the Winter 2017 issue as a PDF here. Continue Reading


Sound Bytes Fall 2016 - Read the Fall 2016 issue of Sound Bytes. Download the Fall 2016 issue as a PDF here. Continue Reading

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About the StudyAbout the Study

The Long Island Sound Study (LISS) is a cooperative effort involving researchers, regulators, user groups and other concerned organizations and individuals. These people are working together to protect and improve the health of the Sound. Learn more