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 326–350 of 356
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Ware Lower Hampshire County | 18 | 1890 | Low | Satisfactory |
| Ware Upper Hampshire County | 34 | 1890 | Low | Satisfactory |
| War Memorial Park Dam Plymouth County | 9 | 1900 | Low | Fair |
| Warren Reservoir Dam Bristol County | 13 | 1883 | Low | Poor |
| Waseeka Sanctuary Dam Middlesex County | 12 | 1965 | Low | Poor |
| Waste Water Treatment Plant Dam Worcester County | 26 | — | Low | Fair |
| Watson Pond Dam Berkshire County | 10 | — | Low | Poor |
| W.D. Cheney Dam Hampden County | 13 | 1930 | Low | Not Rated |
| Wedge Pond Dam Middlesex County | 9 | 1900 | Low | Fair |
| Wellesley Avenue Dam Norfolk County | 11 | — | Low | Satisfactory |
| West Medway Dam Norfolk County | 11 | 1850 | Low | Poor |
| Weston'S Dam Middlesex County | 15 | 1970 | Low | Poor |
| West Springfield Hampden County | 18 | 1840 | Low | Satisfactory |
| West Warren Mill Pond Dam Worcester County | 19 | 1900 | Low | Fair |
| Wetstone Tobacco Company No. 3 Dam Hampden County | 7 | 1955 | Low | Poor |
| Wheeler Pond Dam Franklin County | 17 | 1824 | Low | Satisfactory |
| Wheelwright Pond Dam Worcester County | 17 | — | Low | Poor |
| White Lily Pond Dam Berkshire County | 10 | 1965 | Low | Fair |
| White Pond Dam Worcester County | 14 | 1923 | Low | Satisfactory |
| Whites Pond Dam Franklin County | 10 | 1940 | Low | Fair |
| Wild Acres Pond No. 2 Dam Berkshire County | 8 | 1970 | Low | Unsatisfactory |
| Williamsville Pond Dam North Worcester County | 12 | — | Low | Poor |
| Williamsville Pond Dam South Worcester County | 17 | — | Low | Poor |
| Willow Street Bypass Dam Norfolk County | 12 | — | Low | Poor |
| Windemere Lake Dam Berkshire County | 34 | 1968 | Low | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.