Restore and maintain water quality in Long Island Sound and its watershed.
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The mouth of the Connecticut River in Old Lyme, Connecticut. Photo by Jerry Monkman
Restore and protect the health and resilience of habitats and wildlife in Long Island Sound and its ecosystems.
A snowy egret at Bluff Point State Park in Groton, CT. Photo by Nancy Balcom
Empower Long Island Sound communities to plan for and respond to environmental challenges in ways that prioritize well-being for all.
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Inspire and empower the public to appreciate, value, and protect Long Island Sound and the waters that flow into the Sound.
Students at PS 175 in the Bronx learn how to sein. Photo by Cynthia Carris Alonso.
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.
From Long Island Sound Study to Long Island Sound Partnership
Our Plan envisions a Sound with clean waters, healthy habitats, thriving wildlife, resilient coasts, and an engaged public.
Dive into this story map of the Sound and see how far we've come and where we're going.
Where: Griswold Point, Old Lyme, CT
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Visiting four Long Island Sound Stewardship Areas—Norwalk Harbor, Charles Island, Barn Island, and the Quinnipiac River—reveals the Sound’s diverse landscapes, rich wildlife, and unique ways to connect with nature, with many more sites left to explore.
Area of the Long Island Sound
Average Depth
Water Volume
Length of Coastline
Population Living Within 50 miles
Estimated Value to the Local Economy Per Year
No. of Finfish Species Found in the Sound
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