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

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 After 35 Years Dedicated to Long Island Sound, Mark Tedesco Retires as Director of EPA LIS Office
image for A New Decade of Conservation and Management in Long Island Sound
image for Student Symposium Helps Nurture Budding Marine Scientists
image for Informed and Engaged Public Work Group Meeting
image for Stewardship Strategy Meeting 2
image for Watersheds and Embayments Work Group
image for Sound Matters Winter 2024 Issue II
image for Sound Matters Summer 2024 Issue
image for Year in Review 2023
image for After 35 Years Dedicated to Long Island Sound, Mark Tedesco Retires as Director of EPA LIS Office
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
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

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Eelgrass Mapping and Monitoring

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