Merrimac River

a river of New Hampshire and Massachusetts. Its general course is southerly until it enters Massachusetts; then it turns at almost right angles and flows northeast into the Atlantic. The river receives the waters of Lake Winnepesaukee. During its short course to the sea it tumbles from level to level, furnishing abundant water power at Concord, Manchester, and Nashua in New Hampshire, and at Lowell, Lawrence, and Haverhill in Massachusetts. Important manufactures have grown up at these points. The largest cotton and carpet mills in America stand on its banks. Though otherwise a comparatively unimportant stream, it is one of the greatest industrial rivers in the world. See Lowell