Hopkinton Dam
New Hampshire — Merrimack County — CONTOOCOOK RIVER
Location
| State | New Hampshire |
| County | Merrimack |
| River | CONTOOCOOK RIVER |
| Coordinates | 43.18863, -71.74764 |
Physical Characteristics
| NID Height | 71 ft |
| Dam Height | 71 ft |
| Dam Length | 790 ft |
| NID Storage | 128,000 acre-ft |
| Max Storage | 128,000 acre-ft |
| Surface Area | 220 acres |
Safety Classification
| Hazard Potential | High |
| Condition Assessment | Not Available |
| EAP Status | Yes |
| Last Inspection | November 2, 2021 |
| Inspection Frequency | 5 |
Dam Information
| Year Completed | 1962 |
| Primary Purpose | Flood Risk Reduction |
| Dam Type | Rockfill |
| Owner Type | Federal |
| Owner | USACE - New England District |
| Other Name | Hopkinton Lake |
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.