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 376–400 of 464
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Cow Pond Brook Dam Middlesex County | 13 | — | Significant | Fair |
| Cowee Pond Dam Worcester County | 15 | 1900 | High | Fair |
| Cottage Street Dam Hampshire County | 25 | — | High | Fair |
| Cordingly Dam Middlesex County | 11 | 1912 | Significant | Fair |
| Copicut Reservoir Dam Bristol County | 40 | 1971 | High | Fair |
| Cooley Lake Dam Hampden County | 11 | — | Significant | Fair |
| Cook'S Pond Dam Worcester County | 15 | 1830 | High | Fair |
| Cookson Pond Dam Berkshire County | 26 | 1959 | Significant | Fair |
| Cooks Dam Hampshire County | 32 | — | Significant | Fair |
| Connor Pond Dam Worcester County | 11 | 1968 | Significant | Fair |
| Comins Pond Dam Worcester County | 18 | 1957 | Significant | Fair |
| Colrain Lower Reservoir Dam Franklin County | 15 | 1902 | Significant | Fair |
| Coles Brook Pond Dam Berkshire County | 11 | 1959 | Low | Fair |
| Cole River Dam Bristol County | 11 | — | Low | Fair |
| Coes Lower Pond Dam Worcester County | 15 | 1865 | Significant | Fair |
| Cochran Dam Norfolk County | 13 | 1900 | Low | Fair |
| Cocassett Lake Dam Norfolk County | 16 | 1813 | Significant | Fair |
| Cobbs Pond Dam Norfolk County | 12 | — | High | Fair |
| Coachlace Pond Dam Worcester County | 13 | 1846 | Significant | Fair |
| Clam Lake Dam Berkshire County | 97 | 1977 | High | Fair |
| Chicopee Reservoir Dam Hampden County | 47 | 1927 | High | Fair |
| Cheshire Reservoir Dam Berkshire County | 14 | 1870 | Significant | Fair |
| Cherry Valley Dam Hampden County | 41 | 1877 | High | Fair |
| Chartley Pond Dam Bristol County | 12 | 1696 | High | Fair |
| Chapin Pond Hampden County | 15 | 1900 | Low | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.