Organization for the Assabet River (OAR)
The Organization for the Assabet River (OAR) is your local watershed organization.
Our mission is to protect, preserve, and enhance the Assabet River, its tributaries, and watershed.
The Assabet River, a federally designated Wild and
Scenic River, is located within eastern Massachusetts and flows for 31
miles from its headwaters in Westborough, through nine cities and towns, to the town of Concord, where it joins the Sudbury
River to form the Concord River.
The Assabet watershed is our home. It embodies our sense of place in the landscape. The
OAR’s goal is to bring the

