Mariposa Lake Dam
Key Takeaway
Mariposa Lake Dam is classified as low hazard in Iowa. It was completed in 1952 and is 74 years old. Its primary use is recreation.
Physical Details
| Dam Height | 25 ft (taller than 19.3% in IA) |
| Dam Length | 525 ft |
| Dam Type | Earth |
| Max Storage | 188 acre-ft |
| Normal Storage | 112 acre-ft |
| Surface Area | 19 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1952 (74 years old) |
| NID ID | IA01348 |
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
Jasper County Conservation Board
Local Government
Nearby Dams
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Low Hazard 31 ftFrequently Asked Questions
What is the hazard classification of Mariposa Lake Dam?
Mariposa Lake Dam 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 Mariposa Lake Dam?
Mariposa Lake Dam is owned by Jasper County Conservation Board (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Mariposa Lake Dam built?
Mariposa Lake Dam was completed in 1952, making it 74 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 Mariposa Lake Dam?
Mariposa Lake Dam serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Mariposa Lake Dam?
Mariposa Lake Dam has a dam height of 25 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 Mariposa Lake Dam last inspected?
Mariposa Lake Dam was last inspected on May 28, 2008. Inspection dates indicate when a formal review occurred, not the results of that inspection.