Charles River

Charles River
The Longfellow Bridge crossing over the Charles River, connecting Boston and Cambridge, in winter
Charles, Mystic, and Neponset river watersheds
Location
Country	United States
State	Massachusetts
Cities	Hopkinton, Cambridge, Boston
Physical characteristics
Source	Echo Lake
- location	Hopkinton, Massachusetts, United States
- coordinates	42°11′34″N 71°30′43″W / 42.19278°N 71.51194°W / 42.19278; -71.51194
- elevation	350 ft (110 m)
Mouth	Boston Harbor
- location	Boston, Massachusetts, United States
- coordinates	42°22′14″N 71°3′13″W / 42.37056°N 71.05361°W / 42.37056; -71.05361
- elevation	0 ft (0 m)
Length	80 mi (130 km)
Basin size	308 sq mi (800 km2)
Discharge
- average	302 cu ft/s (8.6 m3/s)
- minimum	0.1 cu ft/s (0.0028 m3/s)
- maximum	4,150 cu ft/s (118 m3/s)

The Charles River is a river that runs between Boston and Cambridge in Massachusetts. It is 80 miles long and starts at Hopkinton, Massachusetts and ends at the Atlantic Ocean after feeding through the Boston Harbour.

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