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 401–425 of 441
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Brewer Brook Dam Worcester County | 25 | 1964 | Significant | Satisfactory |
| Boys & Girls Camp No. 3 Dam Plymouth County | 9 | — | Significant | Satisfactory |
| Boys & Girls Camp No. 1 Dam Plymouth County | 16 | — | Significant | Satisfactory |
| Bound Brook Dam Norfolk County | 11 | 1999 | Significant | Satisfactory |
| Boulder Hill Pond Dam Hampden County | 16 | — | Significant | Satisfactory |
| Borden Brook Reservoir Dam Hampden County | 77 | 1909 | High | Satisfactory |
| Bondsville Upper Dam Hampshire County | 22 | 1880 | Significant | Satisfactory |
| Bolivar Pond Dam Norfolk County | 13 | 2006 | Significant | Satisfactory |
| Blue Hills Reservoir Dam Norfolk County | 36 | 1950 | High | Satisfactory |
| Blood Pond Dam Plymouth County | 11 | 1930 | Significant | Satisfactory |
| Bleachery Dam Middlesex County | 8 | 1900 | Low | Satisfactory |
| Black Brook Pl-566 Flood Control Dam Hampden County | 60 | 1971 | High | Satisfactory |
| Bixby Reservoir Dam Middlesex County | 9 | 1950 | Low | Satisfactory |
| Big Bearhole Pond Dam Bristol County | 20 | 1920 | High | Satisfactory |
| Bickford Pond Dike Worcester County | 17 | 1971 | High | Satisfactory |
| Betty Pond Dam Worcester County | 9 | — | Low | Satisfactory |
| Ben Smith Dam Middlesex County | 9 | 1870 | Low | Satisfactory |
| Benedict Pond Dam Berkshire County | 13 | 1934 | Low | Satisfactory |
| Bemis Pond Dam Worcester County | 9 | — | Low | Satisfactory |
| Beaver Lake Dam Hampshire County | 14 | 1910 | Significant | Satisfactory |
| Bear Swamp - North Dike Franklin County | 155 | 1974 | Low | Satisfactory |
| Bear Hole Reservoir Dam Hampden County | 34 | 1957 | Significant | Satisfactory |
| Bauer Pond Dam Berkshire County | 7 | — | Low | Satisfactory |
| Bartlett Pond Dam Worcester County | 12 | 1850 | Significant | Satisfactory |
| Barretts Mill Road Dam Middlesex County | 9 | — | Low | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.