Land Stewardship

GSWA receives national accreditation!

Becomes one of only eight organizations in New Jersey to achieve this recognition!  


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Things to See and Do

From hiking and biking, to horseback riding and kayaking, there are countless outdoor activities to enjoy in this area. What adventure will you go on today?



Watershed Friendly Homes

Every individual home has an effect on non-point source pollution in our watershed. Learn more about what you can do to minimize your impact with our interactive home guide.




Everyone has right to clean water. Riverkeepers are on the frontlines of the global water crisis, using the advocacy model to stand up for that right. At GSWA, we are the official Waterkeeper Alliance Affiliate for the Passaic River.


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August 16 at 5:30 pm
Free brews, free food, and the great outdoors with the Great Swamp Watershed Association. There's no catch, we simply want to get to know our fellow watershed neighbors and Passaic…

Fungus Walk Through the Swamp

August 23 at 6:00 pm
Join your fellow fungus enthusiast and GSWA Education Coordinator, Adam Palmer, on a foray into the mysterious world of mushrooms, slimes and molds. Enjoy a hike around GSWA’s Conservation Management…

Valley National Bank Volunteer Work Day

August 25 at 8:30 am
As part of its water quality and stewardship mission, Great Swamp Watershed Association owns and manages 73 acres of forested wetlands in Harding Township, known as the Conservation Management Area…

All Upcoming Events

From hikes to educational workshops, GSWA offers a wide variety of environmentally focused programs. We'd love to have you join us at an upcoming event!
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Featured Programs


In-School Education

GSWA is dedicated to teaching the younger generations about their impact on the watershed and river. Every year, we reach over 3,000 students through our in-school programming.


Water Quality

Every year, we publish a Water Quality Report Card to help inform the public about the data we collect and the issues our watershed faces. Check out our most recent report card.

Report Card



GSWA in Action

Want to learn more about GSWA and the work that we do? View our photo gallery to see us in action.
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Current News

Rolling Knolls_Julia Somers

Resolution: Rolling Knolls Landfill to be Capped

GSWA now has the backing of the township in its effort to get the federal government to cap, rather than relocate the contents of a local Superfund landfill.
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Featured Post

landfill in Chatham

Towns Support GSWA plan to cap Superfund Site

Great Swamp Watershed Association recently received the backing of Harding Township through a resolution urging the Environmental Protection Agency (EPA) to cap a Superfund site called Rolling Knolls Landfill located between Chatham Township and Green Village…
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Spring 2018 Newsletter

We’ve preserved an additional 20 acres of land. This plot of land is adjacent to our 53-acre Conservation Management Area (CMA), and increases the area to 73 contiguous acres, open to the public for exploration of the natural habitats and floodplain forest…
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