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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Groundhog Day Moonlight Hike

February 2 at 6:30 pm
We promise this hike will only take place once, despite it being Groundhog Day. But you will wish you could experience it again and again. Lewis Morris Park is a…

Winter Nature Detectives - Kids' Tracks & Scat Hike

February 10 at 10:00 am
Tired of being trapped indoors? Are your kids in need of an activity to burn off pent-up energy? Gather up your family and head outside to breathe in some crisp…

Full Moon Snow Hike

February 15 at 6:30 pm
Come hike the moonlit trails of the Wildlife Observation Center with us as we listen for nighttime creatures. The open canopy cover and bright moonlight provide the perfect backdrop for…

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 the public understand the data we collect and the issues our watershed faces. Learn more about our 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

NJ Science Teachers Convention

Civic Engagement Is The Lesson at NJ Science Teacher Conference

Our director of water quality, Sandra LaVigne, works to bring civic engagement lessons to NJ schools. Working with National Center for Science and Civic Engagement, she and her educator-partners worked to help educators develop new curriculums focused on the intersection of science and civic issues. Read about their work here…
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Featured Post

Dan_Embrace the Chill

Embracing the Winter Chill

With the cool, crisp, autumn weather beginning to fade into memory, and overnight lows blanketing the morning landscape with ornate icy crystals, it is often tempting to retreat to the indoors. But there is certainly no need to seek the warmth and shelter of the inside world. For nature continues to thrive and amaze even throughout the wintertime, if the keen observer knows where to search, and has the good sense to bundle up for the experience!
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Fall 2017 Newsletter

At a time of political change, one thing is clear and consistent: Americans strongly support saving the open spaces they love.
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