Charles River, Massachusetts, Map, & History

Charles River, river, eastern Massachusetts, U.S. It is the longest river wholly within the state, meandering slightly more than 80 miles (130 km) from its source in Hopkinton, southern Middlesex county, to its mouth on Boston Harbor. The river follows a winding course (south, northeast, north

Our Story — Charles River Watershed Association

Charles River - Wikipedia

Charles River Reservation

Historic Map - Watertown, MA - 1879

History of the Charles River

Charles River Basin: contour map of lower basin

Maps Boston — Mystic River Watershed Association

HSB41 - Changing Course: The River in the Revolution

Charles River