Hatfields
Hatfields is a concrete dam located in Strafford County, New Hampshire, built in 1937. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Hatfields
The primary purpose of Hatfields is hydroelectric. The dam generates hydroelectric power by channeling water through turbines, converting the energy of flowing water into electricity. The dam is owned by City Of Rochester (local government). It impounds the Cocheco River near Rochester.
The dam stands 20 feet tall and stretches 106 feet across, creates a reservoir covering 1 acres, has a maximum storage capacity of 6 acre-feet, and collects water from a drainage area of 64 square miles. Completed in 1937, the structure is well-established, with more than 75 years of service.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 07/20/2022.
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Location
| State | New Hampshire |
| County | Strafford |
| Nearest City | Rochester |
| River/Stream | Cocheco River |
| Coordinates | 43.30400, -70.97824 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 106 ft |
| Year Completed | 1937 (89 years old) |
Storage & Hydraulics
| NID Storage | 6 acre-ft |
| Max Storage | 6 acre-ft |
| Normal Storage | 6 acre-ft |
| Surface Area | 1 acres |
| Drainage Area | 64 sq mi |
| Max Discharge | 7,397 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | City of Rochester |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 07/20/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NH83018 |
| Federal ID | NH83018 |
| More Info | State Dam Safety Program |