The Farmington River is a river located in northwest Connecticut and southwest Massachusetts. Its length is 81 miles (130 km) via its longest branch, and its watershed covers 609 square miles (1,577 km²). The river historically played an important role in small-scale manufacturing in towns alongside it, but it is now mainly used for recreation and drinking water. The Farmington River Watershed Association [1] is a non-profit organization for conservation and preservation of this river.