Great East Lake Dam
New Hampshire, Carroll County, RATTLESNAKE BROOK
Location
| State | New Hampshire |
| County | Carroll |
| River | RATTLESNAKE BROOK |
| Coordinates | 43.56970, -70.97270 |
Physical Characteristics
| NID Height | 9 ft |
| Dam Height | 9 ft |
| Dam Length | 265 ft |
| NID Storage | 2,210 acre-ft |
| Max Storage | 2,210 acre-ft |
| Surface Area | 360 acres |
Safety Classification
| Hazard Potential | High |
| Condition Assessment | Poor |
| EAP Status | Yes |
| Last Inspection | April 28, 2026 |
| Inspection Frequency | 2 |
Dam Information
| Year Completed | 1873 |
| Primary Purpose | Water Supply |
| Dam Type | Rockfill |
| Owner Type | Local Government |
| Owner | CITY OF CONCORD |
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.