Lost Grove Lake
Key Takeaway
Lost Grove Lake is classified as high hazard in Iowa. It was completed in 2012 and is 14 years old. Its primary use is recreation. 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 Height | 75 ft (taller than 99.7% in IA) |
| Dam Length | 1,165 ft |
| Dam Type | Earth |
| Max Storage | 9.6K acre-ft |
| Normal Storage | 6.1K acre-ft |
| Surface Area | 350 acres |
| Drainage Area | 7 sq mi |
| Max Discharge | 8,115 cfs |
| Year Completed | 2012 (14 years old) |
| NID ID | IA04083 |
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
Iowa Department of Natural Resources
State Government
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Significant HazardFrequently Asked Questions
What is the hazard classification of Lost Grove Lake?
Lost Grove Lake 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 Lost Grove Lake?
Lost Grove Lake is owned by Iowa Department of Natural Resources (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lost Grove Lake built?
Lost Grove Lake was completed in 2012, making it 14 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 Lost Grove Lake?
Lost Grove Lake 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 Lost Grove Lake?
Lost Grove Lake has a dam height of 75 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 Lost Grove Lake last inspected?
Lost Grove Lake was last inspected on June 17, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.