Lake of The Hills Dam
Key Takeaway
Lake of The Hills Dam is classified as high hazard in Iowa. It was completed in 1972 and is 54 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 Height | 48 ft (taller than 94.1% in IA) |
| Dam Length | 2,400 ft |
| Dam Type | Earth |
| Max Storage | 2.0K acre-ft |
| Normal Storage | 613 acre-ft |
| Surface Area | 657 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1972 (54 years old) |
| NID ID | IA00978 |
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 Transportation
State Government
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Low Hazard 25 ftFrequently Asked Questions
What is the hazard classification of Lake of The Hills Dam?
Lake of The Hills Dam 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 Lake of The Hills Dam?
Lake of The Hills Dam is owned by Iowa Department of Transportation (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lake of The Hills Dam built?
Lake of The Hills Dam was completed in 1972, making it 54 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 Lake of The Hills Dam?
Lake of The Hills Dam serves the following purposes: Other, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Lake of The Hills Dam?
Lake of The Hills Dam has a dam height of 48 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 Lake of The Hills Dam last inspected?
Lake of The Hills Dam was last inspected on March 26, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.