Upper Ansonia Reservoir Dam
Connecticut, New Haven County, Naugatuck River Trib
Location
| State | Connecticut |
| County | New Haven |
| River | Naugatuck River Trib |
| Coordinates | 41.32215, -73.07287 |
Physical Characteristics
| NID Height | 21 ft |
| Dam Height | 21 ft |
| Dam Length | 345 ft |
| NID Storage | 310 acre-ft |
| Max Storage | 310 acre-ft |
| Surface Area | 34 acres |
Safety Classification
| Hazard Potential | High |
| Condition Assessment | Satisfactory |
| EAP Status | Yes |
| Last Inspection | December 13, 2021 |
| Inspection Frequency | 2 |
Dam Information
| Year Completed | 1887 |
| Primary Purpose | Water Supply |
| Dam Type | Masonry |
| Owner Type | Local Government |
| Owner | City of Derby |
| Other Name | Upper Derby Hill Reservoir |
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.