White Oak Pond Dam is an earth dam located in Grafton County, New Hampshire, built in 1920. It carries a Low hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 8 ft8 ft tall and 50 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About White Oak Pond Dam
The primary purpose of White Oak Pond 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 Holderness (local government). It impounds the White Owl Brook near Holderness.
The dam stands 8 feet tall and stretches 50 feet across, creates a reservoir covering 295 acres, has a maximum storage capacity of 976 acre-feet, and collects water from a drainage area of 4 square miles. Completed in 1920, the structure is over a century old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 07/25/2022.
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Location
| State | New Hampshire |
| County | Grafton |
| Nearest City | Holderness |
| River/Stream | White Owl Brook |
| Coordinates | 43.72330, -71.55940 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 8 ft |
| Dam Height | 8 ft |
| Dam Length | 50 ft |
| Year Completed | 1920 (106 years old) |
Storage & Hydraulics
| NID Storage | 976 acre-ft |
| Max Storage | 976 acre-ft |
| Normal Storage | 684 acre-ft |
| Surface Area | 295 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 222 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Town of Holderness |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 07/25/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NH00463 |
| Federal ID | NH00463 |
| More Info | State Dam Safety Program |