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Map of New Jersey Detailed watershed map Event Calendar

Photos of Great Swamp

Photos of Great Swamp

Photos of Great Swamp

Photos of Great Swamp

Protecting our waters and our land
for more than 30 years

Please help us achieve our mission to protect drinking water and preserve land to maintain the natural beauty and enhance the livability of your town.


Join today!



Volunteer on April 26
Bayne Park Work Day

May 10
The Great Swamp Scavenger Hunt

May 16
Invasive Plant ID Hike

Register for April’s
Treasures In Your Backyard Events
in Harding Township

Spring/Summer 2014 Programming

Breakfast Briefings

Outdoor Programs

Volunteer Events

Related Sites of Interest

Save the Date!

Home and Garden Tour
Wednesday, May 28




Join Our Email List




View our ARCHIVE
Email Marketing by Constant Contact


Visit Our Conservation Management Area!

CMA Sign

You’re invited to explore our Conservation Management Area (CMA), a wooded 53-acre natural area in Harding Township that’s open to the public for walking and casual hiking. Though GSWA holds a number of scheduled events throughout the year — family hikes, group tours, and moonlight walks to name a few, you can enjoy the CMA on your own at your convenience [read more] [directions] [Trail Map] [Informational Brochure] [Hunting info].


SWaMP logo

Read about the SWaMP program and see the results of monitoring tests performed by high school and college students in communities along the Passaic River.


Raise Funds for GSWA by Searching and Shopping Online

GoodSearch: You Search...We Give!

Search the web with and each time you do a search, GoodSearch will donate a penny to GSWA!

GoodShop: You Shop...We Give!

Shop online at and a percentage of each purchase will be donated to GSWA! More than 600 top stores are participating including Amazon, Target, Staples, Best Buy and more!


Communities of the
Great Swamp Watershed

May 2013

Presentation (pdf, 6 mb)

Related Sites of Interest

Great Swamp National Wildlife Refuge:

Friends of Great Swamp NWR:

Great Swamp Outdoor Education Center (Morris County Park Commission):

Somerset County Park Commission Environmental Education Center: