Full datetime event: 

Saturday, May 6, 2023From 10:00 am to 1:00 pm


Meet us in Gowanus
Corner of 6th Street and 2nd Avenue


We're joining our friends at Riverkeeper and the Gowanus Canal Conservancy for a morning of giving back to our community.

There are multiple places to join the Riverkeeper Sweep (and if another spot works better for you - we encourage you to sign up on your own here!) However, the Mappy Hour crew will be meeting in Gowanus!

Join Gowanus Canal Conservancy and Riverkeeper for a cleanup and green infrastructure maintenance project at 25 9th St Brooklyn NY, 11215, for the 12th Annual Riverkeeper Sweep.

We will meet at the corner of 6th Street and 2nd Avenue in Gowanus, Brooklyn. The closest address is 141 6th St, Brooklyn, NY 11215.

What to bring:

  • Hat
  • Sunscreen
  • water bottle
  • face mask
  • hand sanitizer
  • work gloves if you have them!


What is the Riverkeeper Sweep?
Every year, thousands of volunteers come together across hundreds of miles of shoreline in New York City and the Hudson Valley for the Annual Riverkeeper Sweep, a day of service for the Hudson River. Volunteers clean up tons of trash, plant healthy vegetation, and remove invasive plant species at more than 100 locations.

Riverkeeper partners with schools, parks, religious communities, paddling groups and scout troops to plan service projects from Staten Island to the Adirondacks. Over 10+ years, Sweep volunteers have removed more than 300 tons of debris and planted or maintained thousands of trees and shrubs. Once-neglected areas have gained year-round stewards, and rivers and creeks are better for it.

We welcome you to take part in the 12th Annual Riverkeeper Sweep. Join a shoreline cleanup, an invasive species removal project, or a tree planting project at a location near you.