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 251–275 of 319
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Eagle Lake Dam Worcester County | 10 | 1938 | High | Fair |
| Dark Brook Reservoir Dike A Worcester County | 11 | 1950 | High | Satisfactory |
| Dark Brook Reservoir Dam Worcester County | 17 | 1950 | High | Satisfactory |
| Damon Pond Dam Middlesex County | 24 | 1938 | High | Poor |
| Crocker Pond Dam Worcester County | 39 | 1933 | High | Satisfactory |
| Cowee Pond Dam Worcester County | 15 | 1900 | High | Fair |
| Cottage Street Dam Hampshire County | 25 | — | High | Fair |
| Copicut Reservoir Dam Bristol County | 40 | 1971 | High | Fair |
| Cook'S Pond Dam Worcester County | 15 | 1830 | High | Fair |
| Conway Reservoir Dam Franklin County | 65 | 1975 | High | Satisfactory |
| Constance M. Fiske Flood Retarding Dam Middlesex County | 28 | 1984 | High | Satisfactory |
| Conant Brook Dam Hampden County | 85 | 1966 | High | Not Available |
| Cold Harbor Brook Dam Worcester County | 22 | 1962 | High | Satisfactory |
| Cohasse Brook Reservoir Dam Worcester County | 60 | 1967 | High | Satisfactory |
| Coes Reservoir Dam Worcester County | 21 | 1865 | High | Satisfactory |
| Cobbs Pond Dam Norfolk County | 12 | — | High | Fair |
| Cobble Mountain Reservoir Dam Hampden County | 245 | 1930 | High | Satisfactory |
| Cleveland Brook Reservoir Dam Berkshire County | 71 | 1949 | High | Satisfactory |
| Clam Lake Dam Berkshire County | 97 | 1977 | High | Fair |
| Chimney Pond Dam Worcester County | 18 | — | High | Unsatisfactory |
| Chicopee Reservoir Dam Hampden County | 47 | 1927 | High | Fair |
| Chestnut Hill Reservoir Dam Suffolk County | 19 | 1870 | High | Satisfactory |
| Cherry Valley Dam Hampden County | 41 | 1877 | High | Fair |
| Chartley Pond Dam Bristol County | 12 | 1696 | High | Fair |
| Charles River Dam At South Natick Middlesex County | 14 | — | High | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.