Events

SOLD OUT- Members Only Winter Solstice Night Hike

December 21 at 6:00 pm
  Please email MHertgen@GreatSwamp.org to be placed on the waitlist or if you need to cancel   Thank you for being a GSWA member! We invite you to bundle-up and…
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Tracks & Scat Detective Hike

January 7, 2024 at 10:00 am
Ever wondered how to sleuth what animals are visiting an area - even when you are not rewarded with a sighting of the creature itself? As we enjoy a leisurely…
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Evening Briefing: Why We Love NJ's Open Spaces

January 16, 2024 at 6:00 pm
There’s a lot of news about climate change and the devastating effects it has and will continue to have on the state of New Jersey. Now, who’s ready for some…
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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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Land Stewardship

GSWA receives national accreditation and is one of only eight New Jersey groups to achieve this designation! GSWA’s vision supports the protection, preservation and promotion of NJ’s open spaces.

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Things to See and Do

From hiking & biking, to horseback riding & kayaking, there are countless outdoor activities to enjoy in this area. What’s your adventure today in New Jersey’s great outdoors?

Explore

Eco-Friendly Living

Every individual home has an effect on non-point source pollution in our watershed. Use our interactive home guide to lean how you can minimize your impact and help keep our watershed healthy.

Learn

WATERKEEPER®

The Riverkeepers are the primary voice using the advocacy model to stand up for clean waterways. GSWA is proud to be the Passaic River Waterkeeper Alliance Affiliate, protecting the source to sea.

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Featured Programs

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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.

Programs
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Water Quality

Every year, we publish a Water Quality Report Card about the prior year to help inform the public about the data we collect and the issues our watershed faces.

Report Card

New GSWA Video

The Passaic: One River, One Community

The Passaic: One River, One Community

Watch our new, 4-minute video that takes you on a journey down the Passaic River from its headwaters in Mendham to Newark Bay where the river meets the sea. Learn more about what we do, how we do it, and why we do it.
Watch Video

GSWA’s CMA

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1 Tiger Lily Lane, Harding Township, NJ

An ecological gem, preserved from deer and invasive species.
You are invited to explore our Conservation Management Area (CMA), a wooded 73-acre natural area in Harding Township. Its 3.5 miles of boardwalk and mulched trails are open to the public…
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Publications

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GSWA Fall 2023 Newsletter

In This Issue: Volunteerism-Empowering Positive Change at GSWA, Insects of the Swamp, From the Desk of the Executive Director, Paddling on the Passaic, Board of Trustees Updates, How a Rapidly Warming Climate Affects our Water Systems, Pledge to Build a Healthier Environment One Yard at a Time…
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GSWA Partner Events

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GSWA Partner Events

GSWA and its partners in the historic Great Swamp watershed region extend an invitation to explore an array of engaging environmental education and recreational activities within the area. Use the button below to read more to find event listings from these local organizations. For GSWA’s events, use the link located at the top of this page.
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