Mamaroneck Reservoir Dam
New York — Westchester County — MAMARONECK RIVER
Location
| State | New York |
| County | Westchester |
| River | MAMARONECK RIVER |
| Coordinates | 40.96806, -73.73889 |
Physical Characteristics
| NID Height | 19 ft |
| Dam Height | 19 ft |
| Dam Length | 185 ft |
| NID Storage | 241 acre-ft |
| Max Storage | 241 acre-ft |
| Surface Area | 18 acres |
Safety Classification
| Hazard Potential | High |
| Condition Assessment | Poor |
| EAP Status | Yes |
| Last Inspection | March 21, 2024 |
| Inspection Frequency | 2 |
Dam Information
| Year Completed | 1928 |
| Primary Purpose | Flood Risk Reduction |
| Dam Type | Concrete |
| Owner Type | Local Government |
| Owner | VILLAGE OF MAMARONECK;Westchester Joint Waterworks |
Location Map
About This Dam Record
Dam safety data is maintained by the Army Corps of Engineers National Inventory of Dams (NID). High-hazard dams are those where failure could cause loss of life or major property damage downstream.