We need your help to keep our rivers and streams clean!


36th Annual River Cleanup, September 16-18

Join us as we spread out across the Sudbury, Assabet, and Concord River Watershed to clean up our rivers and streams in Acton, Ashland, Bedford, Berlin, Boxborough, Billerica, Carlisle, Concord, Framingham/Saxonville, Hopkinton, Hudson, Lexington, Lincoln, Maynard, Marlborough, Northborough, Stow, Southborough, Sudbury, Tewksbury, Wayland, and Westborough.

Friday, September 16 - Sunday, September 18

Gather family and friends for a walk or paddle in one of your favorite places and pick up trash! You set the date and location!
Saturday, September 17 from 8am to 11am

Join a team of volunteers to tackle sites needing a larger group effort. OARS will be present at each site with supplies.

Empower your company and employees to make a positive impact locally! Whether your employees are in the office, working remotely, or have a hybrid environment, we can help you keep them engaged by volunteering in our watershed.

Can't make it to the cleanup? You can join our community of supporters who want to keep our rivers clean! Donate today.

Thank you to our generous sponsors! (as of 8.23.2022)

River Champion Sponsor:

River Sustainer Sponsor:

River Supporter Sponsors:
Calare Properties, Inc., E.T.&L. Corp, Epsilon Associates, Inc., H.H. Warren Insuance Agency, Inc., St. Mary's Credit Union, U.S. Environmental Rental Corp.

River Contributors:
Erikson's Dairy - Maynard, Fidelity Bank, Nashoba Analytical/Granite State Analytical

River Donor Sponsors:
Acton Hydro Company
Rollstone Bank

Become a 36th Annual River Clean-up Corporate Sponsor!
We rely on the support of our members, community and local businesses.
Please contact Vanessa for more information.

Read about last year's cleanup.