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 76–100 of 464
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Cole River Dam Bristol County | 11 | — | Low | Fair |
| Coles Brook Pond Dam Berkshire County | 11 | 1959 | Low | Fair |
| Colrain Lower Reservoir Dam Franklin County | 15 | 1902 | Significant | Fair |
| Comins Pond Dam Worcester County | 18 | 1957 | Significant | Fair |
| Connor Pond Dam Worcester County | 11 | 1968 | Significant | Fair |
| Cooks Dam Hampshire County | 32 | — | Significant | Fair |
| Cookson Pond Dam Berkshire County | 26 | 1959 | Significant | Fair |
| Cook'S Pond Dam Worcester County | 15 | 1830 | High | Fair |
| Cooley Lake Dam Hampden County | 11 | — | Significant | Fair |
| Copicut Reservoir Dam Bristol County | 40 | 1971 | High | Fair |
| Cordingly Dam Middlesex County | 11 | 1912 | Significant | Fair |
| Cottage Street Dam Hampshire County | 25 | — | High | Fair |
| Cowee Pond Dam Worcester County | 15 | 1900 | High | Fair |
| Cow Pond Brook Dam Middlesex County | 13 | — | Significant | Fair |
| Crocker Fish Pond Dam Worcester County | 12 | — | Low | Fair |
| Cross Pond Dam Plymouth County | 7 | 1930 | Significant | Fair |
| Crystal Pond Dam Berkshire County | 19 | 1964 | Significant | Fair |
| Curve Street Dam Middlesex County | 9 | 1904 | Significant | Fair |
| Cushing Pond Dam Plymouth County | 10 | 1956 | Significant | Fair |
| Cushing Pond Dam Plymouth County | 12 | — | Significant | Fair |
| Damon Pond Dam Hampshire County | 17 | 1760 | Significant | Fair |
| Dawson Pond Dam Worcester County | 15 | 1960 | Significant | Fair |
| Demond Pond Dam Worcester County | 12 | — | Significant | Fair |
| Diamond International Corp Lower Dam Hampden County | 19 | 1872 | Low | Fair |
| Diversion Dam Worcester County | 16 | — | Significant | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.