West Lake Dam
Key Takeaway
West Lake Dam is classified as significant hazard in Iowa. It was completed in 1935 and is 91 years old. Its primary use is water supply. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 58 ft (taller than 98.1% in IA) |
| Dam Length | 1,275 ft |
| Dam Type | Earth |
| Max Storage | 9.7K acre-ft |
| Normal Storage | 4.2K acre-ft |
| Surface Area | 306 acres |
| Drainage Area | 10 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1935 (91 years old) |
| Year Modified | 1984 |
| NID ID | IA00213 |
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 Osceola Water Utilities Board
Local Government
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What is the hazard classification of West Lake Dam?
West Lake Dam 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 West Lake Dam?
West Lake Dam is owned by City of Osceola Water Utilities Board (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was West Lake Dam built?
West Lake Dam was completed in 1935, making it 91 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 West Lake Dam?
West Lake Dam 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 West Lake Dam?
West Lake Dam has a dam height of 58 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 West Lake Dam last inspected?
West Lake Dam was last inspected on May 23, 2017. Inspection dates indicate when a formal review occurred, not the results of that inspection.