The Magothy River Association was chartered in 1946 to preserve, conserve, protect, defend and improve the quality of all life within the Magothy River, its watershed and environmentally-related areas.

The Magothy River Association (MRA) is a Maryland, non-profit, tax-exempt corporation dedicated to the preservation and improvement of the water quality, plants, and wildlife of the Magothy River and its watershed. Founded in 1946, the MRA is an all-volunteer group, incorporated as a non-profit 501 (c) (3) charitable organization and representing about 30 communities and over 300 individuals within the Magothy River Watershed.

The organization designs and executes projects that restore and protect the welfare of the river and its watershed. MRA staff members are all volunteers; many projects have been supported by grants from the Chesapeake Bay Trust and other funding organizations. Major efforts have included litigation to preserve our watershed, oyster restoration, planting of submerged aquatic vegetation, water quality analysis, education on the river flora and fauna, and improved public access to the river.