Davenport Sewage Lagoon No 4
Key Takeaway
Davenport Sewage Lagoon No 4 is classified as high hazard in Washington. It was completed in 1987 and is 39 years old. Its primary use is other. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.
Physical Details
| Dam Length | 1,100 ft |
| Dam Type | Earth |
| Max Storage | 46 acre-ft |
| Normal Storage | 39 acre-ft |
| Surface Area | 14 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 4 cfs |
| Year Completed | 1987 (39 years old) |
| NID ID | WA00560 |
Safety Information
Loss of human life is likely if the dam fails.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
Davenport City
Local Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Davenport Sewage Lagoon No 4?
Davenport Sewage Lagoon No 4 is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Davenport Sewage Lagoon No 4?
Davenport Sewage Lagoon No 4 is owned by Davenport City (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Davenport Sewage Lagoon No 4 built?
Davenport Sewage Lagoon No 4 was completed in 1987, making it 39 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 Davenport Sewage Lagoon No 4?
Davenport Sewage Lagoon No 4 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 Davenport Sewage Lagoon No 4 last inspected?
Davenport Sewage Lagoon No 4 was last inspected on September 5, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.