Charles, river, c.60 mi (97 km) long, rising in E Mass. and flowing generally NE to Boston Bay it separates Boston from Cambridge. Extensive development to the riverfront includes the Esplanade, a series of fishing sites, playgrounds, and walking paths and the Hatch Shell, where free, open-air concerts are held by the Boston Pops Orchestra. Recreational sailing and canoeing, college rowing, and boat races are common on the river the Charles River Regatta is held on the last Sunday in October.

The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.

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