Cabin Creek Dam
Cabin Creek Dam is a rockfill dam located in Petersburg Borough, Alaska, built in 1996. It carries a Significant hazard potential classification and has a fair condition assessment.
About Cabin Creek Dam
The primary purpose of Cabin Creek Dam is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Petersburg Borough (local government). It impounds the Cabin Creek near Petersburg.
The dam stands 38 feet tall and stretches 248 feet across, creates a reservoir covering 61 acres, has a maximum storage capacity of 1,270 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1996, the structure is 30 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 09/17/2019.
At 38 feet, this dam is taller than 85% of dams nationwide.
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Location
| State | Alaska |
| County | Petersburg Borough |
| Nearest City | Petersburg |
| River/Stream | Cabin Creek |
| Coordinates | 56.75970, -132.82830 |
Physical Characteristics
| Dam Type | Rockfill |
| NID Height | 38 ft |
| Dam Height | 38 ft |
| Dam Length | 248 ft |
| Year Completed | 1996 (30 years old) |
Storage & Hydraulics
| NID Storage | 1,270 acre-ft |
| Max Storage | 1,270 acre-ft |
| Normal Storage | 660 acre-ft |
| Surface Area | 61 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 3,100 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | PETERSBURG BOROUGH |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 09/17/2019 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | AK00214 |
| Federal ID | AK00214 |
| More Info | State Dam Safety Program |