Ragged Mountain Snow Pond Dam is an earth dam located in Merrimack County, New Hampshire, built in 1988. It carries a Low hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 49 ft49 ft tall and 250 ft long, taller than 92% of U.S. dams with a recorded height. Height is drawn to scale against a ten-story building, about 100 ft; the profile is a generic embankment section and the water level is illustrative.
About Ragged Mountain Snow Pond Dam
The primary purpose of Ragged Mountain Snow Pond Dam is fish and wildlife pond. The dam creates habitat for fish and wildlife, supporting local ecosystems and potentially serving conservation goals. The dam is owned by Ragged Mountain Resort (private). It impounds the Tr Danbury Bog Marsh near Danbury.
The dam stands 49 feet tall and stretches 250 feet across, creates a reservoir covering 2 acres, has a maximum storage capacity of 17 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1988, the structure is 38 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 09/30/2022.
At 49 feet, this dam is taller than 92% of dams nationwide.
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Location
| State | New Hampshire |
| County | Merrimack |
| Nearest City | Danbury |
| River/Stream | Tr Danbury Bog Marsh |
| Coordinates | 43.48553, -71.83953 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 49 ft |
| Dam Height | 49 ft |
| Dam Length | 250 ft |
| Year Completed | 1988 (38 years old) |
Storage & Hydraulics
| NID Storage | 17 acre-ft |
| Max Storage | 17 acre-ft |
| Normal Storage | 10 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 129 cfs |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | Ragged Mountain Resort |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 09/30/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NH00952 |
| Federal ID | NH00952 |
| More Info | State Dam Safety Program |