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 76–100 of 288
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Snake Brook Dam Middlesex County | 25 | 1879 | Significant | Poor |
| Sluice Pond Dam Essex County | 12 | 1900 | Low | Poor |
| Sidneys Pond Dam Essex County | 8 | — | Significant | Poor |
| Sharkey Pond Dam Berkshire County | 25 | — | Low | Poor |
| Sealund Reservoir Dam Plymouth County | 14 | — | Significant | Poor |
| Scott Reservoir Dam Worcester County | 40 | 1875 | High | Poor |
| Schoolhouse Pond Dam Worcester County | 8 | — | Significant | Poor |
| Sawdy Pond Dam Bristol County | 11 | 1938 | Significant | Poor |
| Sanford Mill Pond Dam Norfolk County | 18 | 1881 | Significant | Poor |
| Sandwash Reservoir Dam Berkshire County | 41 | 1936 | High | Poor |
| Rocky Pond Road Dam Worcester County | 7 | 1950 | Low | Poor |
| Rocky Hill Pond Dam Hampshire County | 26 | 1924 | Low | Poor |
| Rochdale Pond Dam Worcester County | 20 | — | High | Poor |
| Robinson Pond Dam Worcester County | 15 | 1838 | Significant | Poor |
| Riiska Brook Dam Berkshire County | 19 | 1952 | High | Poor |
| Richmond Pond Dam Berkshire County | 14 | — | Significant | Poor |
| Red Dam Norfolk County | 10 | 1920 | Significant | Poor |
| Red Brook Road Dam Barnstable County | 8 | 1930 | Significant | Poor |
| Ramsdall Pond Dam Worcester County | 9 | — | Significant | Poor |
| Rail Road Pond Dam Worcester County | 10 | — | Significant | Poor |
| Quinsigamond Pond Dam Worcester County | 12 | 1896 | Significant | Poor |
| Queensville Pond Dam Hampshire County | 22 | 2010 | Significant | Poor |
| Pud'S Pond Dam Norfolk County | 12 | 1800 | Low | Poor |
| Prospect Lake Dam Berkshire County | 6 | — | Significant | Poor |
| Porter Lake Dam Hampden County | 24 | 1919 | Significant | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.