Massachusetts Rivers
Open a river for its map, facts and the lakes on it.
Connecticut River
New England's longest river runs south from the Connecticut Lakes, forms the New Hampshire–Vermont line, crosses Massachusetts' Pioneer Valley past Springfield, and passes Hartford and Middletown before reaching Long Island Sound.
117 milesMerrimack River
Running south through Concord, Manchester and Nashua, New Hampshire, the Merrimack bends northeast in Massachusetts through the old mill cities of Lowell, Lawrence and Haverhill to the sea at Newburyport.
about 149 milesHousatonic River
Flows south through the Berkshires past Lenox, Stockbridge and Great Barrington, then through western Connecticut past Kent and New Milford into Lakes Lillinonah, Zoar and Housatonic before meeting Long Island Sound.
48 milesBlackstone River
A historic mill river flowing southeast from Worcester through Grafton, Uxbridge and Blackstone, Massachusetts, then through Woonsocket, Lincoln and Central Falls, Rhode Island, to Pawtucket.
Swift River
A central Massachusetts river with three branches whose valley was flooded to create Quabbin Reservoir; the river continues below the reservoir as a tributary of the Ware River.