Gillan Pond Dam
Gillan Pond Dam is a concrete dam located in Belknap County, New Hampshire, built in 1971. It carries a Low hazard potential classification and has a poor condition assessment.
About Gillan Pond Dam
The primary purpose of Gillan Pond Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Mr Ernest Gillan (private). It impounds the Nelson Brook near Gilmanton.
The dam stands 10 feet tall and stretches 300 feet across, creates a reservoir covering 40 acres, has a maximum storage capacity of 333 acre-feet, and collects water from a drainage area of 5 square miles. Completed in 1971, the structure is well into its service life at over 50 years 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 09/28/2017.
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Location
| State | New Hampshire |
| County | Belknap |
| Nearest City | Gilmanton |
| River/Stream | Nelson Brook |
| Coordinates | 43.45923, -71.33497 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 300 ft |
| Year Completed | 1971 (55 years old) |
Storage & Hydraulics
| NID Storage | 333 acre-ft |
| Max Storage | 333 acre-ft |
| Normal Storage | 33 acre-ft |
| Surface Area | 40 acres |
| Drainage Area | 5 sq mi |
Ownership & Safety
| Purpose | Recreation |
| Owner | MR ERNEST GILLAN |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 09/28/2017 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NH00526 |
| Federal ID | NH00526 |
| More Info | State Dam Safety Program |