Mirror Lake Dam
New Hampshire — Grafton County — TR HUBBARD BROOK
Location
| State | New Hampshire |
| County | Grafton |
| River | TR HUBBARD BROOK |
| Coordinates | 43.94050, -71.69110 |
Physical Characteristics
| NID Height | 12 ft |
| Dam Height | 12 ft |
| Dam Length | 290 ft |
| NID Storage | 187 acre-ft |
| Max Storage | 187 acre-ft |
| Surface Area | 38 acres |
Safety Classification
| Hazard Potential | Low |
| Condition Assessment | Satisfactory |
| EAP Status | Yes |
| Last Inspection | September 20, 2022 |
| Inspection Frequency | 2 |
Dam Information
| Year Completed | 1836 |
| Primary Purpose | Recreation |
| Dam Type | Earth |
| Owner Type | State |
| Owner | NH DES WATER DIVISION |
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.