Canaan Street Lake Dam is an earth dam located in Grafton County, New Hampshire, built in 1917. It carries a Low hazard potential classification.
Dam profile
NID height · 14 ft14 ft tall and 250 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Canaan Street Lake Dam
The primary purpose of Canaan Street Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Cardigan Mountain School (private). It impounds the Canaan Street Brook near Canaan.
The dam stands 14 feet tall and stretches 250 feet across, creates a reservoir covering 291 acres, has a maximum storage capacity of 1,863 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1917, the structure is over a century 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. The most recent inspection on record was 10/21/2020.
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Location
| State | New Hampshire |
| County | Grafton |
| Nearest City | Canaan |
| River/Stream | Canaan Street Brook |
| Coordinates | 43.67579, -72.04321 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 14 ft |
| Dam Height | 14 ft |
| Dam Length | 250 ft |
| Year Completed | 1917 (109 years old) |
Storage & Hydraulics
| NID Storage | 1,863 acre-ft |
| Max Storage | 1,863 acre-ft |
| Normal Storage | 532 acre-ft |
| Surface Area | 291 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 668 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Cardigan Mountain School |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 10/21/2020 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NH00922 |
| Federal ID | NH00922 |
| More Info | State Dam Safety Program |