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.

GSWA and its partners in our historic watershed and across the Passaic River region are excited to provide you with a listing of free-to-the-public environmental events happening locally.
For inclusion please contact info@greatswamp.org.

Bundle up and let’s celebrate the first day of winter (winter solstice) with a crisp, invigorating night hike and storytelling at Jockey Hollow. Winter solstice is the day with the fewest hours of sunlight in the whole year, making it the shortest day of the year. With the new moon just 2 days away, the stars in the winter skies will be shining brightly…

Community Organizes to Create the Mendham Alliance for Preservation and Conservation. By Frank Zammataro, Guest Author. Re-zoning sparks a call for transparency and balance in accelerated growth plan. What do you do when you hit a brick wall at Town Hall? “You get organized!” says Frank Zammataro…