Spofford Lake Dam
Spofford Lake Dam is an earth dam located in Cheshire County, New Hampshire, built in 1919. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Spofford Lake Dam
The primary purpose of Spofford Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Town Of Chesterfield (local government). It impounds the Partridge Brook near Chesterfield.
The dam stands 11 feet tall and stretches 83 feet across, creates a reservoir covering 731 acres, has a maximum storage capacity of 10,650 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1919, the structure is over a century old.
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 11/20/2019.
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Location
| State | New Hampshire |
| County | Cheshire |
| Nearest City | Chesterfield |
| River/Stream | Partridge Brook |
| Coordinates | 42.90906, -72.42503 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 11 ft |
| Dam Height | 11 ft |
| Dam Length | 83 ft |
| Year Completed | 1919 (107 years old) |
Storage & Hydraulics
| NID Storage | 10,650 acre-ft |
| Max Storage | 10,650 acre-ft |
| Normal Storage | 6,030 acre-ft |
| Surface Area | 731 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 550 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | TOWN OF CHESTERFIELD |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 11/20/2019 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NH00356 |
| Federal ID | NH00356 |
| More Info | State Dam Safety Program |