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 441
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Partridgeville Pond Dam Worcester County | 20 | 1938 | Significant | Satisfactory |
| Paradise Pond Dam Hampshire County | 29 | 1850 | High | Satisfactory |
| Paradise Lake Dam Hampden County | 8 | 1930 | Low | Satisfactory |
| Palmer Upper Reservoir Dam Hampden County | 25 | 1930 | Significant | Satisfactory |
| Palmer Brook Dam Berkshire County | 34 | 1968 | High | Satisfactory |
| Paint Shop Pond Dam Norfolk County | 12 | 2002 | Low | Satisfactory |
| Otis Woodlands Club Dam Berkshire County | 22 | — | Significant | Satisfactory |
| Otis Reservoir Dam Berkshire County | 32 | 1888 | High | Satisfactory |
| Onota Lake Dam Berkshire County | 18 | 1865 | High | Satisfactory |
| Old Water Supply Dam Middlesex County | 13 | 1900 | Significant | Satisfactory |
| Old Oaken Bucket Pond Dam Plymouth County | 6 | 1640 | Significant | Satisfactory |
| Old Mill Pond Dam Worcester County | 15 | 1800 | Significant | Satisfactory |
| Old Mill Pond Dam Dukes County | 5 | — | Significant | Satisfactory |
| Old Grist Mill Pond Dam Bristol County | 12 | 1745 | High | Satisfactory |
| October Mountain Lake Dike Berkshire County | 20 | 1985 | High | Satisfactory |
| October Mountain Lake Dam Berkshire County | 39 | 1972 | High | Satisfactory |
| Oakman Pond Dam Plymouth County | 13 | — | Significant | Satisfactory |
| Noyes Pond Dam Worcester County | 16 | 1920 | Significant | Satisfactory |
| Norumbega Reservoir East Dike Middlesex County | 34 | 1940 | High | Satisfactory |
| Norumbega Reservoir Dike No. 4 Middlesex County | 34 | 1940 | High | Satisfactory |
| Norumbega Reservoir Dike No. 3 Middlesex County | 34 | 1940 | Significant | Satisfactory |
| Norumbega Reservoir Dike No. 2 Middlesex County | 34 | 1940 | Significant | Satisfactory |
| Norton Reservoir Dam Bristol County | 17 | — | High | Satisfactory |
| North Village Pond Worcester County | 13 | 1914 | Low | Satisfactory |
| Northfield Mt. - Upper Reservoir Intake Franklin County | 20 | 1973 | High | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.