Dams in Suffolk County, Massachusetts
4Total Dams
1High Hazard
3Significant
Dam Safety in Suffolk County, Massachusetts
Suffolk County has 4 dams tracked in the National Inventory of Dams. Of these, 1 are classified as high hazard — meaning failure would probably cause loss of human life. Another 3 carry a significant hazard classification. Currently, 1 dams have a condition assessment of poor or unsatisfactory.
The average dam in Suffolk County is 102 years old. The most common purpose is flood risk reduction. The tallest dam is New Charles River Dam at 36 ft.
Explore more: Oldest dams in Massachusetts · Tallest dams · High risk dams · Largest reservoirs
Data note: Hazard potential describes the consequences if a dam failed; it does not predict the likelihood of failure. Inspection, condition, and emergency-plan fields can be incomplete or delayed. Check state dam-safety officials and local emergency managers for official guidance.
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Chestnut Hill Reservoir Dam | High | Satisfactory | 19 | Water Supply | 1870 |
| New Charles River Dam | Significant | Satisfactory | 36 | Flood Risk Reduction | 1978 |
| Westinghouse Dam | Significant | Fair | 15 | Recreation | |
| Neponset River Dam - Lower Mills | Significant | Poor | 15 | Flood Risk Reduction |