Bethlehem Dam is a concrete dam located in Grafton County, New Hampshire, built in 1926. It carries a Low hazard potential classification.
Dam profile
NID height · 29 ft29 ft tall and 282 ft long, taller than 65% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic concrete gravity section and the water level is illustrative.
About Bethlehem Dam
The primary purpose of Bethlehem Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Mr Kirk Howard (private). It impounds the Ammonoosuc River near Bethlehem.
The dam stands 29 feet tall and stretches 282 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 116 acre-feet, and collects water from a drainage area of 96 square miles. Completed in 1926, the structure is well-established, with more than 75 years 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. The most recent inspection on record was 10/20/2020.
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Location
| State | New Hampshire |
| County | Grafton |
| Nearest City | Bethlehem |
| River/Stream | Ammonoosuc River |
| Coordinates | 44.29040, -71.64850 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 29 ft |
| Dam Height | 29 ft |
| Dam Length | 282 ft |
| Year Completed | 1926 (100 years old) |
Storage & Hydraulics
| NID Storage | 116 acre-ft |
| Max Storage | 116 acre-ft |
| Normal Storage | 22 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 96 sq mi |
| Max Discharge | 17,080 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Mr Kirk Howard |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 10/20/2020 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NH00279 |
| Federal ID | NH00279 |
| More Info | State Dam Safety Program |