Massachusetts River Map showing major rivers in Massachusetts, River start and end point, county boundaries.
River Map of Massachusetts State
PDF Map - Free Download Massachusetts River Map, United States
Other Massachusetts Maps & Info
Rivers and Waterways in Massachusetts
Massachusetts has a well-developed network of rivers shaped by its hills, valleys, and coastal plains. Most rivers flow eastward into the Atlantic Ocean, while some western waterways drain into the Connecticut River and eventually Long Island Sound. The state features a mix of steady rivers and smaller streams, with many influenced by seasonal rainfall. Numerous reservoirs and natural lakes provide drinking water, especially for urban areas, and support recreation and environmental conservation across the region.
Major Rivers in Massachusetts
| River | Length (Approx.) | Region | Flows Into |
|---|---|---|---|
| Connecticut River | 410 mi | West | Long Island Sound |
| Merrimack River | 117 mi | North | Atlantic Ocean |
| Charles River | 80 mi | East | Atlantic Ocean |
| Taunton River | 40 mi | Southeast | Mount Hope Bay |
| Housatonic River | 149 mi | West | Long Island Sound |
| Blackstone River | 48 mi | Central | Narragansett Bay |
| Westfield River | 78 mi | West | Connecticut River |
| Deerfield River | 76 mi | West | Connecticut River |
| Chicopee River | 18 mi | Central | Connecticut River |
| Millers River | 52 mi | North | Connecticut River |
| Ware River | 35 mi | Central | Chicopee River |
| Swift River | 32 mi | Central | Chicopee River |
| Neponset River | 29 mi | East | Atlantic Ocean |
| Weymouth Fore River | 15 mi | East | Atlantic Ocean |
| North River | 30 mi | East | Atlantic Ocean |
| Parker River | 13 mi | North | Atlantic Ocean |
| Agawam River | 18 mi | Southeast | Buzzards Bay |
| Ten Mile River | 22 mi | Southeast | Seekonk River |
Major Lakes in Massachusetts
| Lake | Type | Region |
|---|---|---|
| Quabbin Reservoir | Reservoir | Central |
| Wachusett Reservoir | Reservoir | Central |
| Lake Chaubunagungamaug | Natural lake | Central |
| Onota Lake | Natural lake | West |
| Pontoosuc Lake | Natural lake | West |
| Long Pond | Natural lake | Southeast |
| Assawompset Pond | Natural lake | Southeast |
| Lake Cochituate | Natural lake | East |
| Horn Pond | Natural lake | East |
| Lake Wyola | Natural lake | West |
Major River Basins in Massachusetts
Massachusetts river basins are divided between those draining into the Atlantic Ocean and those flowing into the Connecticut River system. These basins support drinking water systems, ecosystems, and flood management across the state.
- Connecticut River Basin
- Merrimack River Basin
- Charles River Basin
- Housatonic River Basin
- Blackstone River Basin
- Taunton River Basin
- Neponset River Basin
- Parker River Basin
- Deerfield River Basin
Massachusetts Rivers Facts
| State | Massachusetts |
| Total Rivers & Streams | 12,000+ miles of streams |
| Major Rivers | Connecticut, Merrimack, Charles |
| Total Waterway Length | 13,000+ miles |
| Main Drainage | Atlantic Ocean & Long Island Sound |
| Longest River | Connecticut River |
| Shortest River | Parker River |
| Major River Basins | 9 Primary Basins |
| Primary Outlet | Atlantic Ocean |
| Key Uses | Drinking water, recreation, hydropower |
| Longest River Within State | Connecticut River |
| Number of River Basins | 7鈥�10 Basins |
| Major Reservoirs | Quabbin, Wachusett Reservoirs |
| Primary Water Source | Reservoirs and surface water |
River Maps of the 50 U.S. States 鈥� Click on a State to View Its River Map
- Alabama River Map
- Alaska River Map
- Arizona River Map
- Arkansas River Map
- California River Map
- Colorado River Map
- Connecticut River Map
- Delaware River Map
- Florida River Map
- Georgia River Map
- Hawaii River Map
- Idaho River Map
- Illinois River Map
- Indiana River Map
- Iowa River Map
- Kansas River Map
- Kentucky River Map
- Louisiana River Map
- Maine River Map
- Maryland River Map
- Massachusetts River Map
- Michigan River Map
- Minnesota River Map
- Mississippi River Map
- Missouri River Map
- Montana River Map
- Nebraska River Map
- Nevada River Map
- New Hampshire River Map
- New Jersey River Map
- New Mexico River Map
- New York River Map
- North Carolina River Map
- North Dakota River Map
- Ohio River Map
- Oklahoma River Map
- Oregon River Map
- Pennsylvania River Map
- Rhode Island River Map
- South Carolina River Map
- South Dakota River Map
- Tennessee River Map
- Texas River Map
- Utah River Map
- Vermont River Map
- Virginia River Map
- Washington River Map
- West Virginia River Map
- Wisconsin River Map
- Wyoming River Map