Clean Waters and
Healthy Watersheds

Improve water quality by reducing contaminant and nutrient loads
from the land and the waters impacting Long Island Sound.

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A woman kayaks in the Black Hall River near the mouth of the Connecticut River in Old Lyme, Connecticut. Credit: Jerry Monkman/Ecophotography

Thriving Habitats
and Abundant Wildlife

Restore and protect the Sound’s ecological balance in a healthy, productive, and resilient state to benefit both people and the natural environment.

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Harp seal resting on beach in Madison, CT, waving flipper to warm itself in winter.

Sustainable and
Resilient Communities

Support vibrant, informed, and engaged communities
that use, appreciate, and help protect Long Island Sound.

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The mouth of the Saugatuck River in Westport, CT.

Sound Science and
Inclusive Management

Manage Long Island Sound using sound science and cross-jurisdictional
governance that is inclusive, adaptive, innovative, and accountable.

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UConn Professor Beth Lawrence collects data on surface water salinity with student Madeline Kollegger at a Barn Island tidal marsh. Photo by Emily Couture (CAHNR)/UConn.

The Long Island Sound Study is revising its Comprehensive Conservation and Management Plan.
Learn more about the plan here.

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.

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Newsroom

image for Sound Matters Winter 2024 Issue II
image for Major Investment of Research Funding to Focus on Key Aspects of Long Island Sound Ecosystem
image for Creating a Resilient Bronx River Community
image for Long Island Sound Futures Fund Welcomes New Face to Director Role
image for Building Ladders to Conservation Careers
image for Buffers in Bridgeport Are Connecting Communities to the Environment
image for Food Scraps to Save the Sound, A Shell Recycling Story
image for Protected: Waste Not, Want Not
image for More than $12 Million in Grants Awarded to Improve the Environment of Long Island Sound
image for Over $1 Million Awarded to Support Climate Resilience Planning in 15 Long Island Sound Communities
image for Executive Order: Federal Government Closed
image for Christmas Day
image for New Year's Day
image for Informed and Engaged Public Work Group Meeting
image for Habitat Restoration and Stewardship Work Group Meeting
image for Sustainable and Resilient Communities Work Group Meeting
image for Informed and Engaged Public Work Group Meeting
image for Habitat Restoration and Stewardship Work Group Meeting
image for Sustainable and Resilient Communities Work Group Meeting
image for Informed and Engaged Public Work Group Meeting
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 Sound Matters Spring 2022 Issue
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
Sound Spotlight

Multi-Year Pilot Study on Long Island Explores Use of Sugar Kelp as a Fertilizer Amendment

Researchers and agriculture specialists are setting out to determine if sugar kelp, farmed for bioextraction, can be used as a fertilizer amendment for use by agricultural growers

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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

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Eelgrass Mapping and Monitoring

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