Princeton NJ Non-Profit Announcements

Stream Cleanups in April @The Watershed

Join us on April 18, 2026 and volunteer to help remove trash from areas around local streams at our 20th Annual Stream Cleanup. Over the past decade, 9,700 enthusiastic volunteers have removed more than?166,000 pounds of trash from our communities. Our cleanup events are a great way to get outside, work together to keep our waterways clean, and improve wildlife habitat.? 

Trees NOT Tees! This year we will be offering cleanup volunteers a complimentary tree sapling to say thank you for helping keep our waterways clean! We will not be offering stream cleanup t-shirts as we typically do to reduce our environmental impact and conserve limited natural resources. One cotton t-shirt takes 650 gallons of water to produce while a single oak tree is a keystone species and can host more than 1,000 moth and butterfly caterpillars. In addition, one mature white oak can absorb over 2000 gallons stormwater per year which can reduce stormwater runoff pollution, flooding, and recharge groundwater.   

We appreciate the continued support of our generous sponsors who make our cleanups possible. Bloomberg, PSEG, Colgate-Palmolive, American Rivers, and New Jersey Clean Communities have provided funding, volunteers and supplies. 

Pre-registration is required! 

Rain or shine event.?Please bring your own gloves and (reusable!) water bottle. Long pants and closed-toed shoes are suggested for woodier areas. This is an in-person program. Masks are optional. A parent or legal guardian is required to attend with all children.?To attend this event, you must agree to the terms of the waiver included during registration.
 

East Windsor: https://thewatershed.doubleknot.com/registration/calendardetail.aspx?activitykey=3134790&orgkey=3916&ReturnURL=//thewatershed.doubleknot.com/app/calendar/monthlist/3916/2026-04-18,2026-04-19/-1/0/

Ewing: https://thewatershed.doubleknot.com/registration/calendardetail.aspx?activitykey=3136052&orgkey=3916&ReturnURL=//thewatershed.doubleknot.com/app/calendar/monthlist/3916/2026-04-18,2026-04-19/-1/0/           

Millstone: https://thewatershed.doubleknot.com/registration/calendardetail.aspx?activitykey=3134792&orgkey=3916&ReturnURL=//thewatershed.doubleknot.com/app/calendar/monthlist/3916/2026-04-18,2026-04-19/-1/0/

Monroe: https://thewatershed.doubleknot.com/registration/calendardetail.aspx?activitykey=3136053&orgkey=3916&ReturnURL=//thewatershed.doubleknot.com/app/calendar/monthlist/3916/2026-04-18,2026-04-19/-1/0/
 

Montgomery:https://thewatershed.doubleknot.com/registration/calendardetail.aspx?activitykey=3134796&orgkey=3916&ReturnURL=//thewatershed.doubleknot.com/app/calendar/monthlist/3916/2026-04-18,2026-04-19/-1/0/

Pennington: https://thewatershed.doubleknot.com/registration/calendardetail.aspx?activitykey=3134793&orgkey=3916&ReturnURL=//thewatershed.doubleknot.com/app/calendar/monthlist/3916/2026-04-18,2026-04-19/-1/0/

Stream Cleanups – Saturday, April 25

Join us on April 25, 2026 and volunteer to help remove trash from areas around local streams at our 20th Annual Stream Cleanup. Over the past decade, 9,700 enthusiastic volunteers have removed more than?166,000 pounds of trash from our communities. Our cleanup events are a great way to get outside, work together to keep our waterways clean, and improve wildlife habitat.? 

Trees NOT Tees! This year we will be offering cleanup volunteers a complimentary tree sapling to say thank you for helping keep our waterways clean! We will not be offering stream cleanup t-shirts as we typically do to reduce our environmental impact and conserve limited natural resources. One cotton t-shirt takes 650 gallons of water to produce while a single oak tree is a keystone species and can host more than 1,000 moth and butterfly caterpillars. In addition, one mature white oak can absorb over 2000 gallons stormwater per year which can reduce stormwater runoff pollution, flooding, and recharge groundwater.   

We appreciate the continued support of our generous sponsors who make our cleanups possible. Bloomberg, PSEG, Colgate-Palmolive, American Rivers, and New Jersey Clean Communities have provided funding, volunteers and supplies. 

Pre-registration is required! 

Rain or shine event.?Please bring your own gloves and (reusable!) water bottle. Long pants and closed-toed shoes are suggested for woodier areas. This is an in-person program. Masks are optional. A parent or legal guardian is required to attend with all children.?To attend this event, you must agree to the terms of the waiver included during registration.

Cranbury: https://thewatershed.doubleknot.com/registration/calendardetail.aspx?activitykey=3134804&orgkey=3916&ReturnURL=//thewatershed.doubleknot.com/app/calendar/monthlist/3916/2026-04-25,2026-04-26/-1/0/

Highstown: https://thewatershed.doubleknot.com/registration/calendardetail.aspx?activitykey=3134802&orgkey=3916&ReturnURL=//thewatershed.doubleknot.com/app/calendar/monthlist/3916/2026-04-25,2026-04-26/-1/0/

Lawrence East: https://thewatershed.doubleknot.com/registration/calendardetail.aspx?activitykey=3134801&orgkey=3916&ReturnURL=//thewatershed.doubleknot.com/app/calendar/monthlist/3916/2026-04-25,2026-04-26/-1/0/

Lawrence West: https://thewatershed.doubleknot.com/registration/calendardetail.aspx?activitykey=3134799&orgkey=3916&ReturnURL=//thewatershed.doubleknot.com/app/calendar/monthlist/3916/2026-04-25,2026-04-26/-1/0/

Rocky Hill: https://thewatershed.doubleknot.com/registration/calendardetail.aspx?activitykey=3136055&orgkey=3916&ReturnURL=//thewatershed.doubleknot.com/app/calendar/monthlist/3916/2026-04-25,2026-04-26/-1/0/