Neponset River

Neponset River
Neponset River with Granite Avenue in background
Charles, Mystic and Neponset river watersheds
Location
Country	United States
State	Massachusetts
Physical characteristics
Source	Neponset Reservoir
• location	Foxborough, Massachusetts, United States
• coordinates	42°05′10″N 71°14′38″W / 42.086°N 71.244°W / 42.086; -71.244
Mouth	Dorchester Bay
• location	Massachusetts
• coordinates	42°18′00″N 71°02′31″W / 42.300°N 71.042°W / 42.300; -71.042
Length	29 mi (47 km)

The Neponset River is a river in eastern Massachusetts in the United States. Its headwaters are at the Neponset Reservoir in Foxborough, near Gillette Stadium. From there, the Neponset meanders generally northeast for about 29 miles (47 km) to its mouth at Dorchester Bay between Quincy and the Dorchester section of Boston, near the painted gas tank.^[1]

The Neponset River forms the southern boundary of the city of Boston, passing through the neighborhoods of Readville, Hyde Park, Mattapan and Dorchester, and forms the northern border of the city of Quincy. In addition, the Neponset touches the towns of Foxborough, Walpole, Sharon, Norwood, Canton, Stoughton, Westwood, Dedham, and Milton.

The Neponset River is fed by a drainage basin of approximately 130 square miles, a watershed that includes numerous aquifers, wetlands, streams, and surrounding upland areas.^[1] Some 250,000 people live in the Neponset River watershed, which in addition to the towns listed above, includes portions of Stoughton, Medfield, Dover, and Randolph.

The Canton River, a tributary of the Neponset River, is located in Canton, Massachusetts. It flows under the Canton Viaduct.