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 326–350 of 441
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| First Herring Brook Reservoir Dam Plymouth County | 22 | 1969 | High | Satisfactory |
| Fife Brook Franklin County | 130 | 1974 | High | Satisfactory |
| Field Pond Dike Essex County | 10 | — | Significant | Satisfactory |
| Field Pond Dam Essex County | 13 | 1930 | Significant | Satisfactory |
| Fells Reservoir Dam No. 8 Middlesex County | 48 | 1898 | High | Satisfactory |
| Fells Reservoir Dam No. 6 Middlesex County | 17 | 1898 | Significant | Satisfactory |
| Fells Reservoir Dam No. 3 Middlesex County | 25 | 1898 | High | Satisfactory |
| Fells Reservoir Dam No. 2 Middlesex County | 12 | 1898 | Significant | Satisfactory |
| Fells Reservoir Dam No. 1 (Extensively Filled D/S Area) Middlesex County | 48 | — | Low | Satisfactory |
| Falls Pond Dam Bristol County | 20 | 1890 | High | Satisfactory |
| Factory Pond Dam Plymouth County | 11 | 1943 | Significant | Satisfactory |
| Ellis Pond Dam Norfolk County | 18 | — | High | Satisfactory |
| Elginwood Pond Dam Essex County | 7 | — | Significant | Satisfactory |
| Egypt Reservoir Dam Berkshire County | 37 | 1894 | High | Satisfactory |
| Echo Lake Dam Middlesex County | 41 | 1881 | High | Satisfactory |
| East Mountain Reservoir Dam Berkshire County | 20 | — | Significant | Satisfactory |
| Eames Mill Pond Dam Worcester County | 16 | 1747 | Significant | Satisfactory |
| Dykes Meadow Dam Essex County | 54 | 1894 | Significant | Satisfactory |
| Dwight Hampden County | 24 | 1860 | Significant | Satisfactory |
| Dunn Pond Dam Worcester County | 13 | 1934 | Significant | Satisfactory |
| Dow Brook Reservoir Dam Essex County | 17 | 1895 | Significant | Satisfactory |
| Diamond International Corp Upper Dam Hampden County | 23 | 1876 | Significant | Satisfactory |
| Delcarte Open Space Dam No. 3 Norfolk County | 9 | — | Low | Satisfactory |
| Delaney Complex E Bolton Dam Worcester County | 16 | 1971 | Low | Satisfactory |
| Delaney Complex Dam Middlesex County | 22 | 1967 | Significant | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.