MYSTIC RIVER WATERSHED
The Mystic River Watershed covers 76 square miles or roughly 1% of the land area of Massachusetts. It includes all the land area that drains into the Mystic River. Its headwaters begin in Reading, MA and form the Aberjona River, then flow into the Upper Mystic Lake in Winchester. From the Lower Mystic Lake, the Mystic River flows through Arlington, Somerville, Medford, Everett, Chelsea, Charlestown, and East Boston before emptying into Boston Harbor.
WATER QUALITY MAP
Each year the US Environmental Protection Agency issues a water quality grade for the Mystic River and its tributaries. Grades are based on data collected by our water quality monitors. Check out the 2018 water quality map.
We are envisioning 25 miles of connected parks and paths for the Mystic. Learn more about the Mystic Greenways project.
MYSTIC RIVER ENVIRONMENTAL ATLAS
The Mystic River Environmental Atlas is an interactive map featuring water quality data, recreational opportunities, accessibility and physiography about the watershed. This project was a collaboration with the Metropolitan Area Planning Council (MAPC).
US EPA MAPS
The US Environmental Protection Agency has a series of maps as part of the Mystic River Watershed Initiative.