Flagpole Pond Dike
Flagpole Pond Dike is an earth dam located in Merrimack County, New Hampshire, built in 1967. It carries a Low hazard potential classification and has a fair condition assessment.
About Flagpole Pond Dike
The primary purpose of Flagpole Pond Dike is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Horizon Holdings Llc (private). It impounds the Tr Contoocook River near Boscawen.
The dam stands 15 feet tall and stretches 100 feet across, creates a reservoir covering 67 acres, has a maximum storage capacity of 490 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1967, 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 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 10/07/2020.
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Location
| State | New Hampshire |
| County | Merrimack |
| Nearest City | Boscawen |
| River/Stream | Tr Contoocook River |
| Coordinates | 43.28065, -71.64355 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 100 ft |
| Year Completed | 1967 (59 years old) |
Storage & Hydraulics
| NID Storage | 490 acre-ft |
| Max Storage | 490 acre-ft |
| Normal Storage | 280 acre-ft |
| Surface Area | 67 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Recreation |
| Owner | HORIZON HOLDINGS LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 10/07/2020 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NH01336 |
| Federal ID | NH01336 |
| More Info | State Dam Safety Program |