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 1151–1175 of 1,291
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Bulloughs Pond Dam Middlesex County | 15 | — | Significant | Poor |
| Bull Brook Reservoir Dam Essex County | 11 | 1988 | Low | Fair |
| Buffumville Pond Dam Worcester County | 17 | — | Significant | Poor |
| Buffumville Dam Worcester County | 66 | 1958 | High | Not Available |
| Bucks Pond Dam Worcester County | 10 | — | Significant | Fair |
| Buckley Dunton Lake Dam Berkshire County | 22 | 1965 | High | Satisfactory |
| Buck Hill Conservation Dam Worcester County | 15 | 1969 | Significant | Fair |
| Brown Pond Dam Worcester County | 16 | 1900 | Low | Fair |
| Browning Pond Road Dam Worcester County | 7 | — | Significant | Satisfactory |
| Brooks Pond Dam Worcester County | 16 | 1939 | Low | Fair |
| Brookside Mill Dam Middlesex County | 16 | 1862 | Significant | Fair |
| Brookline Reservoir Dam Norfolk County | 19 | 1848 | High | Satisfactory |
| Brookhaven Lake Dam Worcester County | 8 | 1965 | Low | Poor |
| Brockton Reservoir Dam Norfolk County | 17 | 1885 | Significant | Fair |
| Bristol Blake State Reservoir Dam Norfolk County | 15 | 1700 | Significant | Poor |
| Brigham Pond Dam Worcester County | 15 | 1872 | Significant | Unsatisfactory |
| Briggs Reservoir No. 2 Dam Plymouth County | 16 | 1937 | Low | Satisfactory |
| Briggs Reservoir Dam No. 1 Plymouth County | 13 | 1917 | Low | Fair |
| Brierly Pond Main Dam Worcester County | 10 | — | Significant | Poor |
| Brierly Pond Dike Worcester County | 8 | — | High | Poor |
| Brick City Mill Pond Dam Worcester County | 23 | — | High | Unsatisfactory |
| Brewer Brook Dam Worcester County | 25 | 1964 | Significant | Satisfactory |
| Breeds Pond Outlet Dam No. 5 Essex County | 44 | 1870 | High | Fair |
| Breeds Pond Lantern Rock Dike No. 4 Essex County | 30 | 1914 | High | Fair |
| Breeds Pond Dike No. 8 Essex County | 10 | 1914 | High | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.