Clean Waters and
Healthy Watersheds

Restore and maintain water quality in Long Island Sound and its watershed.

Learn More

Photo Credit Button Icon

The mouth of the Connecticut River in Old Lyme, Connecticut. Photo by Jerry Monkman

Thriving Habitats
and Abundant Wildlife

Restore and protect the health and resilience of habitats and wildlife in Long Island Sound and its ecosystems.

Learn More

Photo Credit Button Icon

A snowy egret at Bluff Point State Park in Groton, CT. Photo by Nancy Balcom

Sustainable and
Resilient Communities

Empower Long Island Sound communities to plan for and respond to environmental challenges in ways that prioritize well-being for all.

Learn More

Photo Credit Button Icon

Caption needed.

Informed and
Engaged Public

Inspire and empower the public to appreciate, value, and protect Long Island Sound and the waters that flow into the Sound.

Learn More

Photo Credit Button Icon

Students at PS 175 in the Bronx learn how to sein. Photo by Cynthia Carris Alonso.

Celebrating our 40th Anniversary with a New Name and Plan!

We are celebrating our 40th year with a new name  that reflects a focus on collaboration and implementation. Our work starts with a new Comprehensive Conservation and Management Plan to restore and care for the Sound for the next 10 years.

The Long Island Sound Partnership (LIS Partnership) is a collaborative effort involving researchers, regulators, user groups and other concerned organizations and individuals. We are working together to protect and improve the health of the Sound.

Learn More

Newsroom

image for EPA and State Partners Celebrate 40 Years of Action to Protect and Restore Long Island Sound
image for What to Know about the New CCMP
image for The New CCMP: Building on Habitat Restoration Successes and Focusing on New Initiatives
image for Driving Success Through the Federal and Bi-State Partnership
image for A More Informed and Engaged Public: A New Goal for Long Island Sound’s Future
image for Supporting Research is a Sound Investment to Inform the Management of Long Island Sound
image for Advancing Water Quality through Collaborative Planning: Developing the Clean Waters and Healthy Watersheds Goal
image for Forty Years of Citizen Action on Long Island Sound
image for A Retiring Director’s Advice to Managers to Support a Healthy, Abundant Long Island Sound
image for Story Map Highlights Progress in the Sound and Introduces the Updated CCMP
image for Science and Technical Advisory Committee (STAC) Meeting
image for Independence Day
image for Informed and Engaged Public Work Group Meeting
image for Sustainable and Resilient Communities Work Group Meeting
image for Watersheds and Embayments Work Group
image for Habitat Restoration and Stewardship Work Group Meeting
image for Joint Citizens Advisory Committee/Science & Technical Advisory Committee Meeting
image for Informed and Engaged Public Work Group Meeting
image for Watersheds and Embayments Work Group
image for Sustainable and Resilient Communities Work Group Meeting
image for Sound Matters Winter/Spring 2025
image for Sound Matters Winter 2024 Issue II
image for Sound Matters Summer 2024 Issue
image for Year in Review 2023
image for Sound Matters Spring 2024 Issue
image for Sound Matters Winter 2024 Issue
image for Sound Matters Fall 2023 Issue
image for Sound Matters Spring 2023 Issue
image for Year in Review 2022
image for Sound Matters Winter 2023 Issue
image for Forty Years of Citizen Action on Long Island Sound
image for A Retiring Director’s Advice to Managers to Support a Healthy, Abundant Long Island Sound
image for Stuck Between a Rock and a Hard Place
image for Out on the water measuring the health of the Sound’s bays and harbors
image for Coastal Marsh Birds Live Life on the Edge, but Now Face Threat of Sea Level Rise
image for From Canoeing to Communications: A College Intern Tests the Waters in the Environmental Field
image for Recognizing Environmental Anniversaries and Accomplishments
image for A Chilly Day On the Sound
image for Remembering the Great Hurricane of 1938
dave miller at clean wate3r jobs event with gov. george pataki and ross pepe

Sound Spotlight

Forty Years of Citizen Action on Long Island Sound

For decades, the Citizens Advisory Committee, and its predecessor, the Long Island Sound Task Force has played a critical role in achieving many of the LIS Partnership’s successes over the past 40 years.

Learn More

Long Island Sound
By The Numbers

1,320
Square Miles

Area of the Long Island Sound

63
Feet

Average Depth

18 trillion
Gallons

Water Volume

600
Miles

Length of Coastline

23M+
People

Population Living Within 50 miles

$9.4B
Dollars (2015)

Estimated Value to the Local Economy Per Year

120+
Finfish

No. of Finfish Species Found in the Sound

Stay Connected

Sound Fact
Instagram
Videos
Featured Video thumbnail
Reducing nitrogen helps improve water quality. It supports more recreation and a better economy.

Our Partners

United States Environmental Protection Agency seal
Connecticut Energy Environment seal
NEIWPCC logo
Sea Grant CT logo
Sea Grant NY logo
MassDEP logo

Please complete your newsletter signup.


Subscribe to receive our e-newsletter, Sound Bytes by providing your email address. Interested in a free copy of our print newsletter, Sound Update? Then also provide your home/company/school address.