Gilson Pond Dam is an earth dam located in Cheshire County, New Hampshire, built in 1875. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 11 ft11 ft tall and 85 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 Gilson Pond Dam
The primary purpose of Gilson Pond Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Nh Dncr (state). It impounds the Gilson Pond near Jaffrey.
The dam stands 11 feet tall and stretches 85 feet across, creates a reservoir covering 16 acres, has a maximum storage capacity of 80 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1875, the structure is one of the older dams in the region, with over a century and a half of service.
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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 11/28/2018.
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Location
| State | New Hampshire |
| County | Cheshire |
| Nearest City | Jaffrey |
| River/Stream | Gilson Pond |
| Coordinates | 42.86190, -72.06690 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 11 ft |
| Dam Height | 11 ft |
| Dam Length | 85 ft |
| Year Completed | 1875 (151 years old) |
Storage & Hydraulics
| NID Storage | 80 acre-ft |
| Max Storage | 80 acre-ft |
| Normal Storage | 52 acre-ft |
| Surface Area | 16 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 444 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Nh Dncr |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 11/28/2018 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NH01060 |
| Federal ID | NH01060 |
| More Info | State Dam Safety Program |