Powder Mill
Low HazardSatisfactory ConditionEmergency Action Plan: Not Required
Location
| State | New Hampshire |
| County | Hillsborough |
| Nearest City | Bennington |
| River/Stream | Contoocook River |
| Coordinates | 42.99270, -71.92420 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 21 ft |
| Dam Height | 21 ft |
| Dam Length | 366 ft |
| Year Completed | 1924 (102 years old) |
Storage & Hydraulics
| NID Storage | 8,600 acre-ft |
| Max Storage | 8,600 acre-ft |
| Normal Storage | 2,400 acre-ft |
| Surface Area | 435 acres |
| Drainage Area | 184 sq mi |
| Max Discharge | 18,200 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | Monadnock Paper Mills, Inc. |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/15/2017 |
| Emergency Action Plan | Not Required |