Charles River

The Charles River is an 80-mile-long long river in eastern Massachusetts. From its source in Hopkinton the river's mouth is northeast of its headwaters, though it follows a highly meandering route, doubling back on itself several times and traveling through 23 cities and towns before reaching the Atlantic Ocean at Boston. The Native-American name for the Charles River was Quinobequin, meaning "meandering".

The Charles River is fed by approximately 80 streams and several major aquifers as it flows 80 miles , starting at Teresa Road just north of Echo Lake in Hopkinton, passing through 23 cities and towns in eastern Massachusetts before emptying into Boston Harbor. Thirty-three lakes and ponds and 35 municipalities are entirely or partially part of the Charles River drainage basin. Despite the river's length and relatively large drainage area , its source is only 26 miles from its mouth, and the river drops only 350 feet from source to sea. The Charles River watershed contains more than 8,000 acres of protected wetlands, referred to as Natural Valley Storage. These areas are important in preventing downstream flooding and providing natural habitats to native species.

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