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 151–175 of 464
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Peterson'S Saw Mill Pond Dam Plymouth County | 10 | — | Significant | Fair |
| Peter Pond Dam Worcester County | 10 | 1925 | Significant | Fair |
| Perryville Pond Dam Bristol County | 10 | — | Significant | Fair |
| Perryville Pond Dam Worcester County | 13 | 1870 | Significant | Fair |
| Peppers Mill Pond Dam Hampshire County | 7 | 1953 | Low | Fair |
| Pelton Reservoir Dam Berkshire County | 16 | 1954 | Low | Fair |
| Pelham Lake Dam Franklin County | 14 | 1850 | Significant | Fair |
| Parsons Reservoir Dam Worcester County | 13 | — | Significant | Fair |
| Parker Pond Dam Worcester County | 20 | — | Significant | Fair |
| Paradise Pond Dam Worcester County | 11 | — | Significant | Fair |
| Packard Pond Dam Franklin County | 25 | — | Significant | Fair |
| Overlook Reservoir Dike Worcester County | 22 | 1871 | High | Fair |
| Ortolani Reservoir No. 3 Dam Plymouth County | 13 | 1910 | Low | Fair |
| Orrs Pond Dam Bristol County | 18 | 1906 | Low | Fair |
| Old Shepard Pond Dam Worcester County | 7 | — | Low | Fair |
| Old Grist Mill Pond Dam Worcester County | 19 | 1953 | Significant | Fair |
| Notown Reservoir Dike Worcester County | 25 | 1876 | High | Fair |
| Notown Reservoir Dam Worcester County | 26 | 1876 | High | Fair |
| Norumbega Reservoir Dam No. 1 Middlesex County | 42 | 1940 | High | Fair |
| North Watuppa Pond Dam Bristol County | 11 | 1963 | High | Fair |
| North Silver Lake Dam Berkshire County | 76 | — | High | Fair |
| North Harwich Reservoir Dam Barnstable County | 8 | 1880 | Low | Fair |
| Noquochoke Lake Dam Bristol County | 14 | 1854 | High | Fair |
| Niskayuna Pond Dam Berkshire County | 25 | — | Low | Fair |
| Newton Reservoir Dam Worcester County | 30 | 1903 | Low | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.