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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Breakfast Briefing: Small Mammal and Plant Survey Results

November 13 at 8:00 am
It’s a double-header with Drew Biology Professor, Dr. Tammy Windfelder and NJ Conservation Foundation Ecologist, Dr. Emile DeVito, as they report back on current research from our own Conservation Management…

Post-Thanksgiving CMA Cleanup & Hike

November 25 at 9:00 am
Stuffed from your big Thanksgiving meal? Us too. The cure is moving. C’mon outside and get your blood pumping for a good cause. We need to get our CMA in…

Breakfast Briefing: Current Water Quality Issues

November 27 at 9:15 am
Ever wonder about the water quality in the streams in your neighborhood? Come and learn about the quality of the water in your community and get ideas on how you…

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

Giving Tuesday Graphic for website-resized

Support GSWA November 27

Plastic is everywhere, and a lot of it ends up in our local rivers, streams, and oceans. Eventually this plastic breaks up into very small particles, known as microplastics, and aquatic life and birds ingest these plastic particles. So not only are our waters contaminated, but the entire food chain is compromised.
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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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2018 Fall Newsletter_new for website

GSWA Fall-Winter 2018 Newsletter

In this issue: Rolling Knolls Landfill, 2018 Gala, Closing Your Pool, GSWA and Paterson SMART (Stormwater Management and Resource Training), Upcoming Events, Invasive Species and Climate Change, Legacy Giving, New Educational Collaboration, Plastic Pollution, The Fungal Jungle and more!
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