Terror Lake

Terror River, Marmont Bay· Kodiak Island Borough, Alaska· Built 1984· Rockfill· 193 ft tall
Low Hazard Hydroelectric Private

Physical Details

Dam Height 193 ft (taller than 94.1% in AK)
Dam Length2,450 ft
Dam TypeRockfill
Normal Storage108.0K acre-ft
Surface Area1,000 acres
Drainage Area15 sq mi
Max Discharge23,100 cfs
Year Completed1984 (42 years old)
NID IDAK83008

Safety Information

Low Hazard

No probable loss of human life and low economic/environmental losses expected

Emergency Action Plan: No
Last Inspection: August 10, 2021
State Regulated: No

Ownership

Kodiak Electric Association, Inc.

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Terror Lake?

Terror Lake is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected.

Who owns Terror Lake?

Terror Lake is owned by Kodiak Electric Association, Inc. (Private).

When was Terror Lake last inspected?

Terror Lake was last inspected on August 10, 2021.

When was Terror Lake built?

Terror Lake was completed in 1984, making it 42 years old.

Data from the National Inventory of Dams (NID) maintained by the US Army Corps of Engineers. Dam conditions may have changed since the last update. This site is not affiliated with USACE. Do not use for emergency planning — contact your local dam safety program.