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 301–325 of 1,291
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Dykes Meadow Dam Essex County | 54 | 1894 | Significant | Satisfactory |
| Eagle Dam Norfolk County | 11 | 1920 | Low | Unsatisfactory |
| Eagle Lake Dam Worcester County | 10 | 1938 | High | Fair |
| Eames Mill Pond Dam Worcester County | 16 | 1747 | Significant | Satisfactory |
| Eames Pond Dam Worcester County | 13 | — | Significant | Poor |
| East Branch Swift Regulating Dam Worcester County | 32 | — | Low | Fair |
| East Brimfield Dam Worcester County | 53 | 1960 | High | Not Available |
| East Head Bog Dam No. 1 Plymouth County | 8 | 1900 | Low | Not Rated |
| East Head Pond Dam Plymouth County | 11 | 1900 | Low | Fair |
| East Mountain Reservoir Dam Berkshire County | 20 | — | Significant | Satisfactory |
| Echo Lake Dam Berkshire County | 10 | — | Low | Fair |
| Echo Lake Dam Worcester County | 12 | 2013 | Significant | Fair |
| Echo Lake Dam Middlesex County | 41 | 1881 | High | Satisfactory |
| Eclipse Dam Berkshire County | 52 | 1890 | High | Fair |
| Eddy Pond Dam Worcester County | 29 | 1920 | High | Fair |
| Edget'S Pond Dam Worcester County | 14 | — | Significant | Poor |
| Edson Pond Dam Worcester County | 12 | 1960 | Low | Poor |
| Egger Bog Dam Plymouth County | 8 | 1947 | Low | Not Rated |
| Egypt Reservoir Dam Berkshire County | 37 | 1894 | High | Satisfactory |
| Elginwood Pond Dam Essex County | 7 | — | Significant | Satisfactory |
| Ellis Brett Pond Dam Plymouth County | 14 | 1930 | High | Poor |
| Ellis Pond Dam Worcester County | 7 | 1990 | Significant | Fair |
| Ellis Pond Dam Norfolk County | 18 | — | High | Satisfactory |
| Emerson Brook Dam Essex County | 15 | 1951 | Low | Fair |
| Epstein Pond Dam Hampshire County | 18 | 1967 | Low | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.