Gorham
Gorham is a timber crib dam located in Coos County, New Hampshire, built in 1958. 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 20 feet tall and stretches 430 feet across, creates a reservoir covering 32 acres, has a maximum storage capacity of 258 acre-feet, and collects water from a drainage area of 1,431 square miles. Completed in 1958, the structure is well into its service life at over 50 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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 06/05/2019.
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Location
| State | New Hampshire |
| County | Coos |
| Nearest City | Gorham |
| River/Stream | Androscoggin River |
| Coordinates | 44.38950, -71.16690 |
Physical Characteristics
| Dam Type | Timber Crib |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 430 ft |
| Year Completed | 1958 (68 years old) |
Storage & Hydraulics
| NID Storage | 258 acre-ft |
| Max Storage | 258 acre-ft |
| Normal Storage | 258 acre-ft |
| Surface Area | 32 acres |
| Drainage Area | 1,431 sq mi |
| Max Discharge | 43,000 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner Type | Not Listed |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/05/2019 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NH00022 |
| Federal ID | NH00022 |
| More Info | State Dam Safety Program |