Neponset River Dam - Lower Mills
Significant HazardPoor ConditionEmergency Action Plan: Yes
Location
| State | Massachusetts |
| County | Suffolk |
| Nearest City | Milton |
| River/Stream | Neponset River |
| Coordinates | 42.27074, -71.06881 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 15 ft |
| Dam Length | 115 ft |
Storage & Hydraulics
| NID Storage | 250 acre-ft |
| Max Storage | 250 acre-ft |
| Normal Storage | 220 acre-ft |
| Surface Area | 64 acres |
| Drainage Area | 109 sq mi |
| Max Discharge | 5,300 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | MA Department of Conservation & Recreation |
| Owner Type | State |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 03/18/2021 |
| Emergency Action Plan | Yes |