May 3, 2025 from 8 AM to 12 PM

Join local clean water advocates for a clean up and invasive species removal project at Sycamore Park, Long Pond, and Dixon Lake from 8 AM to 12 PM for the 14th Annual Riverkeeper Sweep. This is a rain or shine event.

Volunteers will meet at Sycamore Park, 790 Long Pond Rd. Mahopac, NY 1054, at the pavilion just before the beach. Use the Sycamore Park parking lot. From the parking lot, walk down the paved path toward the beach area.

We recommend that all Sweep volunteers bring a hat, sunscreen, a full reusable water bottle, insect repellent, work gloves and hand sanitizer. Be prepared to keep and eye out for poison ivy that may be mixed in with the brush. We recommend long sleeve shirt and long pants if you plan to participate in the invasive species removal.

This site is suitable for elementary-aged children with adult supervision.

Questions? Contact Riverkeeper at sweep@riverkeeper.org or Joe Doherty at wjoedoherty@gmail.com or (845) 705-7151.

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*IMPORTANT! To ensure the safety of volunteers, Sweep Site Leaders, professional staff, and our communities, we ask that volunteers adhere to the following guidelines:

Volunteers are required to pre-register for Sweep.
Volunteers should not participate if they have ANY signs of illness.

Over the last 13 years, Sweep leaders have completed 1,349 service projects, bringing together thousands of volunteers from NYC to the Adirondacks to clean up 382 tons of debris, and plant or maintain 8,851 native plants. This incredible effort is made possible by the generosity of Riverkeeper’s members, sponsors, and donors. If you would like to support the continued growth of the Riverkeeper Sweep, please consider making a donation. Contributions of any amount are meaningful.

PUTNAM - Carmel: Sycamore Park Cleanup & Invasive Species Removal

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