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 1226–1250 of 1,291
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| West Parish Filter No. 2 Dam Hampden County | 30 | 1910 | Significant | Poor |
| West Parish Filter No. 3 Dam Hampden County | 39 | 1910 | High | Fair |
| West Pond Outlet Dam Essex County | 13 | 1872 | Significant | Unsatisfactory |
| West River Pond Dam Worcester County | 15 | 1920 | Significant | Poor |
| West Springfield Hampden County | 18 | 1840 | Low | Satisfactory |
| West Street Dam Norfolk County | 12 | — | Significant | Satisfactory |
| Westville Dam Worcester County | 72 | 1962 | High | Not Available |
| West Warren Mill Pond Dam Worcester County | 19 | 1900 | Low | Fair |
| West Whately Reservoir Dam Franklin County | 23 | 1903 | High | Fair |
| Wetmore Pond Dam Worcester County | 16 | — | Significant | Poor |
| Wetstone Tobacco Company No. 3 Dam Hampden County | 7 | 1955 | Low | Poor |
| Weymouth Great Pond Dam Norfolk County | 10 | 1884 | Significant | Satisfactory |
| Wheeler Pond Dam Franklin County | 17 | 1824 | Low | Satisfactory |
| Wheeler Pond Dam Hampden County | 17 | 1956 | Significant | Fair |
| Wheeler Pond Dam Worcester County | 11 | — | Significant | Unsatisfactory |
| Wheelwright Pond Dam Worcester County | 17 | — | Low | Poor |
| Whitehall Pond Dam Worcester County | 22 | — | Significant | Poor |
| Whitehall Reservoir Dam Middlesex County | 8 | — | Significant | Satisfactory |
| Whitehall Reservoir Distribution Dam Middlesex County | 15 | — | Significant | Satisfactory |
| Whitehall Upper Pond Dam Middlesex County | 10 | — | Significant | Poor |
| White Island Pond Dam Plymouth County | 11 | — | Significant | Poor |
| White Lily Pond Dam Berkshire County | 10 | 1965 | Low | Fair |
| White Pond Dam Worcester County | 14 | 1923 | Low | Satisfactory |
| White Reservoir Dam Hampshire County | 51 | 1912 | Significant | Fair |
| Whites Pond Dam Franklin County | 10 | 1940 | Low | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.