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 376–400 of 441
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Collins Pond Dam Essex County | 13 | 1930 | Significant | Satisfactory |
| Collins Hampden County | 11 | 1984 | Low | Satisfactory |
| Cold Harbor Brook Dam Worcester County | 22 | 1962 | High | Satisfactory |
| Colburn Street Dam Norfolk County | 11 | — | Significant | Satisfactory |
| Cohasse Brook Reservoir Dam Worcester County | 60 | 1967 | High | Satisfactory |
| Coes Reservoir Dam Worcester County | 21 | 1865 | High | Satisfactory |
| Cobble Mountain Reservoir Dam Hampden County | 245 | 1930 | High | Satisfactory |
| Clock Tower Dam Middlesex County | 20 | 1890 | Significant | Satisfactory |
| Cleveland Brook Reservoir Dam Berkshire County | 71 | 1949 | High | Satisfactory |
| Chicopee Hampden County | 9 | 1898 | Low | Satisfactory |
| Chestnut Hill Reservoir Dam Suffolk County | 19 | 1870 | High | Satisfactory |
| Chartpak Dam Hampshire County | 31 | — | Significant | Satisfactory |
| Center Pond Dam Berkshire County | 9 | — | Significant | Satisfactory |
| Carter Pond Dam Worcester County | 9 | 1924 | Significant | Satisfactory |
| Carpenter Reservoir Dam Worcester County | 32 | 1888 | Significant | Satisfactory |
| Carlson Quarry Reservoir Dam Essex County | 28 | 1953 | Low | Satisfactory |
| Canoe River Campground Dam Bristol County | 10 | — | Significant | Satisfactory |
| Cambridge Reservoir Dam Middlesex County | 31 | 1897 | High | Satisfactory |
| Calkins Pond Dam Hampden County | 14 | 1961 | Significant | Satisfactory |
| Byron Weston Dam No. 1 Berkshire County | 28 | 1875 | Significant | Satisfactory |
| Butterfield Pond Dam Middlesex County | 22 | 1938 | Significant | Satisfactory |
| Buckley Dunton Lake Dam Berkshire County | 22 | 1965 | High | Satisfactory |
| Browning Pond Road Dam Worcester County | 7 | — | Significant | Satisfactory |
| Brookline Reservoir Dam Norfolk County | 19 | 1848 | High | Satisfactory |
| Briggs Reservoir No. 2 Dam Plymouth County | 16 | 1937 | Low | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.