OARS is your local watershed organization.

Our mission is to protect, preserve, and enhance the Assabet, Sudbury, and Concord Rivers, their tributaries, and watersheds.

Established in 1986 as the Organization for the Assabet River by a group of concerned citizens, OAR added the Sudbury and Concord rivers to its mission in 2011, becoming OARS. Currently the organization has approximately 900 members, a 13-member Board of Directors, and 5 part-time staff. Together with our volunteers and partners, OARS has made significant progress over the past 25 years towards achieving our mission.