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 576–600 of 616
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Bondsville Upper Dam Hampshire County | 22 | 1880 | Significant | Satisfactory |
| Bondsville Lower Dam Hampshire County | 17 | 1975 | Significant | Fair |
| Bolivar Pond Dam Norfolk County | 13 | 2006 | Significant | Satisfactory |
| Bloods Pond Dam Middlesex County | 12 | — | Significant | Fair |
| Blood Pond Dam Plymouth County | 11 | 1930 | Significant | Satisfactory |
| Blackstone River Dam Worcester County | 17 | — | Significant | Poor |
| Bethune Pond Dam Essex County | 15 | — | Significant | Fair |
| Bents Pond Dam Worcester County | 14 | 1900 | Significant | Poor |
| Beaver Lake Dam Hampshire County | 14 | 1910 | Significant | Satisfactory |
| Beaver Brook Dam Middlesex County | 21 | — | Significant | Poor |
| Bear Hole Reservoir Dam Hampden County | 34 | 1957 | Significant | Satisfactory |
| Bear Brook Dam Worcester County | 12 | — | Significant | Fair |
| Bates Power Reservoir Dam Worcester County | 9 | 1846 | Significant | Poor |
| Bassett Brook Reservoir Dam Berkshire County | 29 | 1967 | Significant | Fair |
| Bartlett Pond Dam Worcester County | 12 | 1850 | Significant | Satisfactory |
| Bartlett Pond Dam Worcester County | 14 | — | Significant | Unsatisfactory |
| Barrowsville Pond Dam Bristol County | 14 | 1920 | Significant | Poor |
| Barrett Park Pond Dam Worcester County | 15 | — | Significant | Unsatisfactory |
| Bare Hill Pond Dam Worcester County | 9 | 1837 | Significant | Fair |
| Barefoot Brook Dam Middlesex County | 16 | 1962 | Significant | Satisfactory |
| Ballardvale Dam Essex County | 14 | 1753 | Significant | Fair |
| Baldwin Water Supply Dam Worcester County | 9 | — | Significant | Poor |
| Balch Pond Dike Middlesex County | 3 | — | Significant | Poor |
| Balch Pond Dam Middlesex County | 12 | — | Significant | Poor |
| Bailey Pond Dam Essex County | 15 | 1912 | Significant | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.