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 201–225 of 441
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Mill Pond Dam Essex County | 17 | 1875 | Significant | Satisfactory |
| Mill Pond Dam Franklin County | 12 | — | Significant | Satisfactory |
| Mill Pond Dam Essex County | 13 | 2013 | Significant | Satisfactory |
| Mill Pond Dam Berkshire County | 19 | — | Significant | Satisfactory |
| Mill Pond Dam Plymouth County | 10 | — | Significant | Satisfactory |
| Millham Reservoir Dam Middlesex County | 26 | 1893 | Significant | Satisfactory |
| Middle Pond Dam No. 4 Bristol County | 16 | — | Significant | Satisfactory |
| Middle Pond Dam No. 3 Bristol County | 10 | 1969 | Significant | Satisfactory |
| Middle Pond Dam No. 2 Bristol County | 18 | — | Significant | Satisfactory |
| Middle Pond Dam No. 1 Bristol County | 18 | 1967 | Significant | Satisfactory |
| Metropolitan Circular Dam Middlesex County | 27 | — | Significant | Satisfactory |
| Methuen Falls Essex County | 23 | 1895 | Significant | Satisfactory |
| Memorial Pond Dam Norfolk County | 11 | — | Significant | Satisfactory |
| Medway Park Dam Norfolk County | 12 | — | Significant | Satisfactory |
| Meadowbrook Pond Dam Bristol County | 7 | 1966 | Low | Satisfactory |
| Mclean Reservoir Dam Hampden County | 35 | 1903 | Significant | Satisfactory |
| Mattapoisett River Dam Plymouth County | 10 | 1898 | Significant | Satisfactory |
| Massapoag Lake Dam Norfolk County | 7 | — | Significant | Satisfactory |
| Mahar Regional School Dam Franklin County | 10 | 1956 | Significant | Satisfactory |
| Magoun Pond Dam Plymouth County | 16 | 1991 | Significant | Satisfactory |
| Lynn Reservoir Dam Essex County | 10 | 1872 | Significant | Satisfactory |
| Lynde Brook Reservoir Dam Worcester County | 61 | 1876 | High | Satisfactory |
| Luther Reservoir Dam Bristol County | 16 | — | Low | Satisfactory |
| Ludlow Reservoir Dam Hampden County | 19 | 1877 | High | Satisfactory |
| Lower Van Horn Reservoir Dam Hampden County | 52 | 1848 | High | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.