Pillar Creek Dam No. 2.B
Key Takeaway
Pillar Creek Dam No. 2.B is classified as significant hazard in Alaska. It was completed in 1968 and is 58 years old. Its primary use is water supply. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 17 ft (taller than 30.6% in AK) |
| Dam Length | 250 ft |
| Dam Type | Rockfill |
| Max Storage | 123 acre-ft |
| Normal Storage | 123 acre-ft |
| Surface Area | 12 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 900 cfs |
| Year Completed | 1968 (58 years old) |
| NID ID | AK00071 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
CITY OF KODIAK
Local Government
Nearby Dams
Pillar Creek Dam No. 2.A
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Significant Hazard 45 ftPillar Creek Dam No.1.B
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Low Hazard 11 ftFrequently Asked Questions
What is the hazard classification of Pillar Creek Dam No. 2.B?
Pillar Creek Dam No. 2.B is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Pillar Creek Dam No. 2.B?
Pillar Creek Dam No. 2.B is owned by CITY OF KODIAK (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Pillar Creek Dam No. 2.B built?
Pillar Creek Dam No. 2.B was completed in 1968, making it 58 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.
What is the primary purpose of Pillar Creek Dam No. 2.B?
Pillar Creek Dam No. 2.B serves the following purposes: Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Pillar Creek Dam No. 2.B?
Pillar Creek Dam No. 2.B has a dam height of 17 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.
When was Pillar Creek Dam No. 2.B last inspected?
Pillar Creek Dam No. 2.B was last inspected on May 21, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.