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 501–525 of 616
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Crystal Lake Dam Essex County | 8 | 1930 | Significant | Satisfactory |
| Crow Hills Pond Dam Worcester County | 16 | 1937 | Significant | Satisfactory |
| Cross Pond Dam Plymouth County | 7 | 1930 | Significant | Fair |
| Crosby Pond Dam Middlesex County | 9 | — | Significant | Unsatisfactory |
| Crooked Pond Dam Hampshire County | 14 | — | Significant | Satisfactory |
| Cresticon Lower Worcester County | 6 | 1948 | Significant | Satisfactory |
| Crescent Street Worcester County | 28 | 1900 | Significant | Satisfactory |
| Crane Brook Upper Dam Plymouth County | 11 | — | Significant | Satisfactory |
| Cranberry Meadow Pond Dam Worcester County | 11 | 1939 | Significant | Poor |
| Crackrock Pond Dam Norfolk County | 14 | 1737 | Significant | Poor |
| Cow Pond Brook Dam Middlesex County | 13 | — | Significant | Fair |
| Cordingly Dam Middlesex County | 11 | 1912 | Significant | Fair |
| Cooley Lake Dam Hampden County | 11 | — | Significant | Fair |
| Cooley Hill Reservoir Dam Worcester County | 18 | 1887 | Significant | Poor |
| Cookson Pond Dam Berkshire County | 26 | 1959 | Significant | Fair |
| Cooks Dam Hampshire County | 32 | — | Significant | Fair |
| Conway Recreation Dam Franklin County | 20 | 1949 | Significant | Satisfactory |
| Connor Pond Dam Worcester County | 11 | 1968 | Significant | Fair |
| Comins Pond Dam Worcester County | 18 | 1957 | Significant | Fair |
| Columbia Mill Dam Berkshire County | 25 | 1901 | Significant | Poor |
| Colrain Lower Reservoir Dam Franklin County | 15 | 1902 | Significant | Fair |
| Collinsville Dam Middlesex County | 9 | 1850 | Significant | Poor |
| Collins Pond Dam Essex County | 13 | 1930 | Significant | Satisfactory |
| Colburn Street Dam Norfolk County | 11 | — | Significant | Satisfactory |
| Coes Lower Pond Dam Worcester County | 15 | 1865 | Significant | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.