Massachusetts Dams
1,291 dams tracked by the National Inventory of Dams
Total Dams
1,291
High Hazard
319
24.7%
Poor / Unsatisfactory
336
Average Age
112 yrs
Hazard Classification
High319 (24.7%)
Significant616 (47.7%)
Low356 (27.6%)
Condition Assessment
Satisfactory441 (34.2%)
Fair464 (35.9%)
Poor / Unsatisfactory336 (26.0%)
Not Rated50 (3.9%)
Federal
15
State
211
Local
585
Private
451
Tallest Dams
- Cobble Mountain Reservoir Dam245 ft
- Quabbin Winsor Dam170 ft
- Littleville Dam164 ft
- Bear Swamp - North Dike 155 ft
- Knightville Dam150 ft
High Hazard Dams
Poor Condition Dams
All Dams in Massachusetts
Showing 401–425 of 464
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Central Street Dam Essex County | 9 | 1975 | Low | Fair |
| Central Street Dam Middlesex County | 34 | 1659 | High | Fair |
| Centennial Dam Norfolk County | 23 | — | High | Fair |
| Cedar Swamp Pond Dam Worcester County | 8 | 1939 | Significant | Fair |
| Cedar Street Dam Middlesex County | 12 | — | Significant | Fair |
| Cedar Pond Dam Worcester County | 9 | 1876 | Significant | Fair |
| Cedar Meadow Pond Dam Worcester County | 15 | 1924 | Significant | Fair |
| Carding Mill Pond Dam Middlesex County | 17 | 1930 | Significant | Fair |
| Caprons Pond Dam, Canal and Gates Worcester County | 17 | — | Significant | Fair |
| Calkins Pond Upper Dam Hampden County | 25 | — | Significant | Fair |
| Cabot Pond Dam Bristol County | 9 | — | Significant | Fair |
| Buswell Pond Dam Essex County | 9 | 1923 | Significant | Fair |
| Burrage Pond Lower Reservoir Dike B Plymouth County | 10 | 1941 | Low | Fair |
| Burnshirt River Dam Worcester County | 8 | — | Significant | Fair |
| Burncoat Pond Dam Worcester County | 16 | — | Significant | Fair |
| Bull Brook Reservoir Dam Essex County | 11 | 1988 | Low | Fair |
| Bucks Pond Dam Worcester County | 10 | — | Significant | Fair |
| Buck Hill Conservation Dam Worcester County | 15 | 1969 | Significant | Fair |
| Brown Pond Dam Worcester County | 16 | 1900 | Low | Fair |
| Brooks Pond Dam Worcester County | 16 | 1939 | Low | Fair |
| Brookside Mill Dam Middlesex County | 16 | 1862 | Significant | Fair |
| Brockton Reservoir Dam Norfolk County | 17 | 1885 | Significant | Fair |
| Briggs Reservoir Dam No. 1 Plymouth County | 13 | 1917 | Low | Fair |
| Breeds Pond Outlet Dam No. 5 Essex County | 44 | 1870 | High | Fair |
| Breeds Pond Lantern Rock Dike No. 4 Essex County | 30 | 1914 | High | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.