Poquonnock Reservoir Dam
Connecticut — New London County — GREAT BROOK
Location
| State | Connecticut |
| County | New London |
| River | GREAT BROOK |
| Coordinates | 41.35052, -72.03651 |
Physical Characteristics
| NID Height | 18 ft |
| Dam Height | 18 ft |
| Dam Length | 290 ft |
| NID Storage | 1,660 acre-ft |
| Max Storage | 1,660 acre-ft |
| Surface Area | 139 acres |
Safety Classification
| Hazard Potential | High |
| Condition Assessment | Satisfactory |
| EAP Status | Yes |
| Last Inspection | February 15, 2023 |
| Inspection Frequency | 2 |
Dam Information
| Year Completed | 1901 |
| Primary Purpose | Water Supply |
| Dam Type | Earth |
| Owner Type | Local Government |
| Owner | City of Groton |
| Other Name | Groton Reservoir;Poquonnock 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.