Powder Mill
New Hampshire — Hillsborough County — Contoocook River
Location
| State | New Hampshire |
| County | Hillsborough |
| River | Contoocook River |
| Coordinates | 42.99270, -71.92420 |
Physical Characteristics
| NID Height | 21 ft |
| Dam Height | 21 ft |
| Dam Length | 366 ft |
| NID Storage | 8,600 acre-ft |
| Max Storage | 8,600 acre-ft |
| Surface Area | 435 acres |
Safety Classification
| Hazard Potential | Low |
| Condition Assessment | Satisfactory |
| EAP Status | Not Required |
| Last Inspection | June 15, 2017 |
| Inspection Frequency | 3 |
Dam Information
| Year Completed | 1924 |
| Primary Purpose | Hydroelectric |
| Dam Type | Concrete |
| Owner Type | Private |
| Owner | Monadnock Paper Mills, Inc. |
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.