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 176–200 of 288
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| O'Brien Pond Dam Hampshire County | 13 | — | Significant | Poor |
| Old Duck Pond Dam Worcester County | 12 | — | Significant | Poor |
| Old Mill Pond Dam Worcester County | 13 | — | Significant | Poor |
| Old Mill Pond Dam Worcester County | 18 | — | Significant | Poor |
| Old Pond Dam Bristol County | 9 | 1751 | Significant | Poor |
| Osgood Pond Dam Essex County | 28 | — | Significant | Poor |
| Otter River Dam Worcester County | 10 | 1946 | Low | Poor |
| Overlook Reservoir Dam Worcester County | 41 | 1871 | High | Poor |
| Papoose Lake Upper Dam Franklin County | 12 | — | Significant | Poor |
| Parker Mills Pond Dam Plymouth County | 19 | — | High | Poor |
| Pecks Lower Pond Dam Berkshire County | 31 | 1877 | Significant | Poor |
| Plimpton Pond Dam Norfolk County | 19 | 1925 | Low | Poor |
| Plow Shop Pond Dam Middlesex County | 7 | 1856 | Low | Poor |
| Porter Lake Dam Hampden County | 24 | 1919 | Significant | Poor |
| Prospect Lake Dam Berkshire County | 6 | — | Significant | Poor |
| Pud'S Pond Dam Norfolk County | 12 | 1800 | Low | Poor |
| Queensville Pond Dam Hampshire County | 22 | 2010 | Significant | Poor |
| Quinsigamond Pond Dam Worcester County | 12 | 1896 | Significant | Poor |
| Rail Road Pond Dam Worcester County | 10 | — | Significant | Poor |
| Ramsdall Pond Dam Worcester County | 9 | — | Significant | Poor |
| Red Brook Road Dam Barnstable County | 8 | 1930 | Significant | Poor |
| Red Dam Norfolk County | 10 | 1920 | Significant | Poor |
| Richmond Pond Dam Berkshire County | 14 | — | Significant | Poor |
| Riiska Brook Dam Berkshire County | 19 | 1952 | High | Poor |
| Robinson Pond Dam Worcester County | 15 | 1838 | Significant | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.