Squannacook River Dam
Massachusetts — Middlesex County — Squannacook River
Location
| State | Massachusetts |
| County | Middlesex |
| River | Squannacook River |
| Coordinates | 42.60259, -71.62774 |
Physical Characteristics
| NID Height | 18 ft |
| Dam Height | — |
| Dam Length | 150 ft |
| NID Storage | 110 acre-ft |
| Max Storage | 110 acre-ft |
| Surface Area | 20 acres |
Safety Classification
| Hazard Potential | High |
| Condition Assessment | Fair |
| EAP Status | Yes |
| Last Inspection | May 5, 2023 |
| Inspection Frequency | 2 |
Dam Information
| Year Completed | — |
| Primary Purpose | Recreation |
| Dam Type | Concrete |
| Owner Type | Local Government |
| Owner | Groton Land Holdings, Inc.;Town of Groton |
| Other Name | Thompson Mill Pond Dam |
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.