• An Estuary of
    National Significance

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

    Learn More

    Eelgrass off Fishers Island, courtesy of Cornell Cooperative Extension Marine Program
  • Maintaining
    Healthy Habitats

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

    Learn More

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

    Learn More

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

    Learn More

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

Stewardship Atlas


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

The Data


LISS’s environmental indicators track measures that show the health of Long Island Sound.
View Data »

Photo of the Month

Corrie sandy point

Watch the Stewardship Atlas Video Series on LISS's YouTube Channel.
View Multimedia Gallery »

Make a Difference


You can volunteer to help restore and protect the Sound.
Learn more »

News Room



Sound Bytes Winter 2014 - Read the Winter 2014 issue of Sound Bytes. Download the Winter 2014 issue as a PDF here. Continue Reading

Grantees and sate and local officials surround a ceremonial check at the Port Jefferson Village Center. Holding the check are: Carole DiPaolo of the Coalition to Save Hempstead Harbor, Lynn Dwyer of the National Fish and Wildlife Foundation, and Joan Leary Matthews, Director, Clean Water Division, of the USEPA Region 2.


$1.3 Million Awarded for Community-Based Projects to Improve Health of Long Island Sound - Top federal and state environmental officials today announced 22 grants totaling more than $1.3 million to local government and community groups. Continue Reading

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Follow the CCMP Update - Turn to the CCMP Update page to read a copy of the draft plan for the restoration and protection of Long Island Sound. Continue Reading



Sound Bytes Fall 2014 - Read the Fall 2014 issue of Sound Bytes. Download the Fall 2014 issue as a PDF here. Continue Reading

Mark Tedesco, EPA Long Island Sound Office director, discusses the CCMP with Drew Carey, a consultant. Event was at Southern Connecticut State University on Sept. 17, 2014


New Public Input Meetings - The meetings will be an opportunity to come in person to learn about the Plan before the public comment period ends Nov. 8. Continue Reading

Urban Sea book


CCMP Webinar - Register to participate in a webinar to learn about the CCMP and enter to win a new book highlighting scientific research of Long Island Sound. Continue Reading

CTDEEP research assistants aboard the research vessel John Dempsey deploy a rosette sampler to collect water quality samples.Photo by Lloyd Langevin


Water Quality Improves in Long Island Sound - For the second summer in a row, concentrations of dissolved oxygen in Long Island Sound are higher than the long-term average. Continue Reading



A Day in the Life of the Nissequogue River 2014 - On Wednesday, October 15, 2014, the "A Day in the Life of the Nissequogue River 2014" event will occur along the Nissequogue River, a Long Island Sound Stewardship Area. Continue Reading

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Citizens Advisory Committee -

When: December 11, 2014 all-day
Where: Housatonic Community College, 900 Lafayette Boulevard, Bridgeport, CT 06604, USA


Continue Reading

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Management Committee -

When: January 15, 2015 all-day
Continue Reading


Living Shoreline Workshop -

When: January 9, 2015 @ 8:30 am – 4:00 pm
Where: University of Connecticut/Avery Point, 1080 Shennecossett Road, Groton, CT 06340, USA
Continue Reading


Private: 26th Annual Nonpoint Source Workshop -

When: April 28, 2015 – April 29, 2015 all-day
Where: Harakeet Inn, 162 Main Street, Freeport, ME 04032, USA

Save the Date & Call for Abstracts!  The 26th Annual Nonpoint Source Pollution Conference for the New England states and New York will be held on April 28-29, 2015 at the Harraseeket Inn in Freeport,[...]

Continue Reading


Saturday, October 4, 2014 at 9:00am-1:00pm: MillionTreesNYC Fall Planting -

When: October 4, 2014 @ 9:00 am – 1:00 pm
Where: Soundview Park, Bronx, NY

Join New York City Department of Parks & Recreation and New York Restoration Project for the MillionTrees NYC planting. Seven years ago, the city launched the MillionTreesNYC initiative with an ambitious goal: to plant and[...]

Continue Reading


Friday, September 26, 2014 and Saturday, September 27, 2014: Source to Sea Cleanup, CT -

When: September 26, 2014 – September 27, 2014 all-day

Join the Connecticut River Watershed Council (CRWC) for their 18th Annual Source to Sea Cleanup. It is open to all ages and abilities. Visit CRWC’s 2014 Source to Sea Cleanup map to participate in a[...]

Continue Reading



Sound Bytes Winter 2014 - Read the Winter 2014 issue of Sound Bytes. Download the Winter 2014 issue as a PDF here. Continue Reading



Sound Bytes Fall 2014 - Read the Fall 2014 issue of Sound Bytes. Download the Fall 2014 issue as a PDF here. Continue Reading



Making a Difference Issue - The fall 2014 issue of Sound Update focuses on individuals that share a common goal of giving back to their communities and making a difference to protect and restore the Sound. Continue Reading



Sound Bytes Summer 2014 - Read the Summer 2014 issue of Sound Bytes. Continue Reading



Sound Bytes Spring 2014 - Read the Spring 2014 issue of Sound Bytes. Continue Reading



20-Year Anniversary of the CCMP Issue - The winter 2013-2014 issue of Sound Update focuses on the 20-year anniversary of LISS's Comprehensive Conservation and Management Plan. Continue Reading



Sound Bytes Winter 2013 – 2014 - Read the Winter 2013 – 2014 issue of Sound Bytes. Continue Reading

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Seafloor Mapping Issue - Fall 2013 issue of Sound Update focuses on the Long Island Sound Seafloor Mapping Program. Continue Reading

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

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