Gorham
Gorham is a timber crib dam located in Coos County, New Hampshire, built in 1904. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Gorham
The primary purpose of Gorham is hydroelectric. The dam generates hydroelectric power by channeling water through turbines, converting the energy of flowing water into electricity. It impounds the Androscoggin River near Gorham.
The dam stands 24 feet tall and stretches 775 feet across, creates a reservoir covering 45 acres, has a maximum storage capacity of 370 acre-feet, and collects water from a drainage area of 1,384 square miles. Completed in 1904, 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. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 06/04/2019.
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Location
| State | New Hampshire |
| County | Coos |
| Nearest City | Gorham |
| River/Stream | Androscoggin River |
| Coordinates | 44.40840, -71.19520 |
Physical Characteristics
| Dam Type | Timber Crib |
| NID Height | 24 ft |
| Dam Height | 24 ft |
| Dam Length | 775 ft |
| Year Completed | 1904 (122 years old) |
Storage & Hydraulics
| NID Storage | 370 acre-ft |
| Max Storage | 370 acre-ft |
| Normal Storage | 370 acre-ft |
| Surface Area | 45 acres |
| Drainage Area | 1,384 sq mi |
| Max Discharge | 47,500 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner Type | Not Listed |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/04/2019 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NH00191 |
| Federal ID | NH00191 |
| More Info | State Dam Safety Program |