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 1,291
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Erikson Dam Middlesex County | 17 | 1848 | Significant | Fair |
| Estabrook Farm Pond Dam Middlesex County | 22 | — | Low | Poor |
| Factory Hollow Dam Hampshire County | 31 | 1895 | High | Fair |
| Factory Hollow Dike Hampshire County | 5 | 1895 | Significant | Poor |
| Factory Pond Dam Plymouth County | 11 | 1943 | Significant | Satisfactory |
| Factory Pond Dam Middlesex County | 13 | 1873 | Significant | Poor |
| Factory Village Pond Dam Worcester County | 23 | — | Significant | Unsatisfactory |
| Fall Brook Reservoir Dam and Dike Worcester County | 37 | 1896 | High | Poor |
| Falls Pond Dam Bristol County | 20 | 1890 | High | Satisfactory |
| Falulah Reservoir Dam Worcester County | 20 | 1883 | Significant | Poor |
| Farmers Pond Dam Bristol County | 10 | — | Significant | Unsatisfactory |
| Farm Pond Dam Worcester County | 8 | 1900 | Low | Poor |
| Farnham Reservoir Dam Berkshire County | 105 | 1910 | High | Fair |
| Farnums Mill Pond Dam Essex County | 12 | 1900 | Low | Unsatisfactory |
| Farrar Pond Dam Middlesex County | 9 | 1920 | Low | Fair |
| Fawn Pond Dam Plymouth County | 7 | — | Low | Not Rated |
| Federal Pond Dam Plymouth County | 10 | 1900 | Low | Not Rated |
| Fells Reservoir Dam No. 1 (Extensively Filled D/S Area) Middlesex County | 48 | — | Low | Satisfactory |
| Fells Reservoir Dam No. 2 Middlesex County | 12 | 1898 | Significant | Satisfactory |
| Fells Reservoir Dam No. 3 Middlesex County | 25 | 1898 | High | Satisfactory |
| Fells Reservoir Dam No. 6 Middlesex County | 17 | 1898 | Significant | Satisfactory |
| Fells Reservoir Dam No. 8 Middlesex County | 48 | 1898 | High | Satisfactory |
| Felton Lake Dam Berkshire County | 15 | 1937 | Low | Fair |
| Fernwood Lake East Dam Essex County | 5 | 1877 | High | Poor |
| Fernwood Lake North Dam Essex County | 16 | 1877 | High | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.