Roslyn Wastewater Lagoon No 3
Key Takeaway
Roslyn Wastewater Lagoon No 3 is classified as low hazard in Washington. It was completed in 1973 and is 53 years old. Its primary use is other.
Physical Details
| Dam Length | 2,000 ft |
| Dam Type | Earth |
| Max Storage | 59 acre-ft |
| Normal Storage | 50 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 10 sq mi |
| Max Discharge | 1 cfs |
| Year Completed | 1973 (53 years old) |
| NID ID | WA01652 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
Roslyn City
Local Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Roslyn Wastewater Lagoon No 3?
Roslyn Wastewater Lagoon No 3 is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Roslyn Wastewater Lagoon No 3?
Roslyn Wastewater Lagoon No 3 is owned by Roslyn City (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Roslyn Wastewater Lagoon No 3 built?
Roslyn Wastewater Lagoon No 3 was completed in 1973, making it 53 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 Roslyn Wastewater Lagoon No 3?
Roslyn Wastewater Lagoon No 3 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 Roslyn Wastewater Lagoon No 3 last inspected?
Roslyn Wastewater Lagoon No 3 was last inspected on July 7, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.