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 101–125 of 1,291
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Ware Upper Hampshire County | 34 | 1890 | Low | Satisfactory |
| Ware River Diversion Dam Worcester County | 38 | 1910 | Significant | Satisfactory |
| Ware Lower Hampshire County | 18 | 1890 | Low | Satisfactory |
| Wards Pond Dam Hampden County | 20 | 1892 | Significant | Fair |
| Wallis Pond Dam Worcester County | 16 | — | Low | Poor |
| Wallis Pond Dam Worcester County | 8 | 1900 | Low | Fair |
| Wallace Pond Dam Worcester County | 11 | — | Significant | Poor |
| Wallace Pond Dam Essex County | 22 | 1850 | High | Fair |
| Wallace Pond Dam Worcester County | 15 | 1950 | Low | Satisfactory |
| Walker Pond Dam Worcester County | 10 | 1957 | Low | Poor |
| Waldo Lake Dam Plymouth County | 18 | 1936 | High | Fair |
| Walden Pond Outlet Dam Essex County | 43 | 1890 | High | Fair |
| Walden Pond East End Dam Essex County | 8 | 1890 | High | Fair |
| Waite Pond Dam Worcester County | 11 | — | Significant | Poor |
| Wade Lake Dam Hampden County | 10 | — | Significant | Fair |
| Wachusett Reservoir South Dike Worcester County | 45 | 1906 | High | Satisfactory |
| Wachusett Reservoir North Dike Worcester County | 85 | 1904 | High | Satisfactory |
| Wachusett Reservoir Dam Worcester County | 114 | 1906 | High | Satisfactory |
| Wachusett Lake Dam Worcester County | 4 | 1905 | Significant | Fair |
| Waban Hill Reservoir Dam Middlesex County | 24 | 1900 | Low | Satisfactory |
| Vorces Pond Dam Franklin County | 12 | 1892 | Significant | Fair |
| Vistron Dam Hampshire County | 25 | — | Significant | Fair |
| Vinica Pond Dam Hampden County | 13 | — | Low | Poor |
| Victory Lane Dam Middlesex County | 16 | — | Significant | Poor |
| Vandy'S Pond Dam Norfolk County | 8 | — | Significant | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.