Walla Walla Effluent Storage Lagoon
Key Takeaway
Walla Walla Effluent Storage Lagoon is classified as significant hazard in Washington. It was completed in 2008 and is 18 years old. Its primary use is other. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Length | 1,800 ft |
| Dam Type | Earth |
| Max Storage | 87 acre-ft |
| Normal Storage | 78 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 2008 (18 years old) |
| Year Modified | 2008 |
| NID ID | WA00708 |
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
Walla Walla City
Local Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Walla Walla Effluent Storage Lagoon?
Walla Walla Effluent Storage Lagoon 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 Walla Walla Effluent Storage Lagoon?
Walla Walla Effluent Storage Lagoon is owned by Walla Walla City (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Walla Walla Effluent Storage Lagoon built?
Walla Walla Effluent Storage Lagoon was completed in 2008, making it 18 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 Walla Walla Effluent Storage Lagoon?
Walla Walla Effluent Storage Lagoon serves the following purposes: Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
When was Walla Walla Effluent Storage Lagoon last inspected?
Walla Walla Effluent Storage Lagoon was last inspected on October 20, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.