Airport Marsh Dam
Airport Marsh Dam is an earth dam located in Coos County, New Hampshire, built in 1956. It carries a Low hazard potential classification and has a poor condition assessment.
About Airport Marsh Dam
The primary purpose of Airport Marsh Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Nh Fish And Game Department (state). It impounds the Carroll Stream near Whitefield.
The dam stands 11 feet tall and stretches 300 feet across, creates a reservoir covering 12 acres, has a maximum storage capacity of 810 acre-feet, and collects water from a drainage area of 14 square miles. Completed in 1956, 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 06/21/2021.
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Location
| State | New Hampshire |
| County | Coos |
| Nearest City | Whitefield |
| River/Stream | Carroll Stream |
| Coordinates | 44.36770, -71.55750 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 11 ft |
| Dam Height | 11 ft |
| Dam Length | 300 ft |
| Year Completed | 1956 (70 years old) |
Storage & Hydraulics
| NID Storage | 810 acre-ft |
| Max Storage | 810 acre-ft |
| Normal Storage | 166 acre-ft |
| Surface Area | 12 acres |
| Drainage Area | 14 sq mi |
| Max Discharge | 2,400 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | NH FISH AND GAME DEPARTMENT |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 06/21/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NH00254 |
| Federal ID | NH00254 |
| More Info | State Dam Safety Program |