Terror Lake
Terror Lake is a rockfill dam located in Kodiak Island Borough, Alaska, built in 1984. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Terror Lake
The primary purpose of Terror Lake is hydroelectric. The dam generates hydroelectric power by channeling water through turbines, converting the energy of flowing water into electricity. The dam is owned by Kodiak Electric Association, Inc. (private). It impounds the Terror River, Marmont Bay.
The dam stands 193 feet tall and stretches 2,450 feet across, creates a reservoir covering 1,000 acres, has a storage capacity of 108,000 acre-feet, and collects water from a drainage area of 15 square miles. Completed in 1984, the structure is 42 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 08/10/2021.
At 193 feet, this dam is taller than 99% of all dams in the United States.
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Location
| State | Alaska |
| County | Kodiak Island Borough |
| Nearest City | None |
| River/Stream | Terror River, Marmont Bay |
| Coordinates | 57.65251, -153.02605 |
Physical Characteristics
| Dam Type | Rockfill |
| NID Height | 193 ft |
| Dam Height | 193 ft |
| Dam Length | 2,450 ft |
| Year Completed | 1984 (42 years old) |
Storage & Hydraulics
| NID Storage | 108,000 acre-ft |
| Normal Storage | 108,000 acre-ft |
| Surface Area | 1,000 acres |
| Drainage Area | 15 sq mi |
| Max Discharge | 23,100 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | Kodiak Electric Association, Inc. |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 08/10/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | AK83008 |
| Federal ID | AK83008 |
| More Info | State Dam Safety Program |