Canaan
Canaan is a concrete dam located in Coos County, New Hampshire, built in 1927. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Canaan
The primary purpose of Canaan is hydroelectric. The dam generates hydroelectric power by channeling water through turbines, converting the energy of flowing water into electricity. It impounds the Connecticut River near Stewartstown.
The dam stands 19 feet tall and stretches 275 feet across, creates a reservoir covering 20 acres, has a maximum storage capacity of 120 acre-feet, and collects water from a drainage area of 381 square miles. Completed in 1927, 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. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 07/14/2022.
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Location
| State | New Hampshire |
| County | Coos |
| Nearest City | Stewartstown |
| River/Stream | Connecticut River |
| Coordinates | 44.99932, -71.53036 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 19 ft |
| Dam Height | 19 ft |
| Dam Length | 275 ft |
| Year Completed | 1927 (99 years old) |
Storage & Hydraulics
| NID Storage | 120 acre-ft |
| Max Storage | 120 acre-ft |
| Normal Storage | 120 acre-ft |
| Surface Area | 20 acres |
| Drainage Area | 381 sq mi |
| Max Discharge | 37,000 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner Type | Not Listed |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 07/14/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NH00129 |
| Federal ID | NH00129 |
| More Info | State Dam Safety Program |