Rock Valley Lake Dam
Key Takeaway
Rock Valley Lake Dam is classified as significant hazard in Iowa. It was completed in 2008 and is 18 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 39 ft (taller than 82.4% in IA) |
| Dam Length | 765 ft |
| Dam Type | Earth |
| Max Storage | 1.2K acre-ft |
| Normal Storage | 759 acre-ft |
| Surface Area | 62 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 2008 (18 years old) |
| NID ID | IA03900 |
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
Darrell Coddington
Private
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What is the hazard classification of Rock Valley Lake Dam?
Rock Valley 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 Rock Valley Lake Dam?
Rock Valley Lake Dam is owned by Darrell Coddington (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Rock Valley Lake Dam built?
Rock Valley Lake Dam was completed in 2008, making it 18 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 Rock Valley Lake Dam?
Rock Valley 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 Rock Valley Lake Dam?
Rock Valley Lake Dam has a dam height of 39 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 Rock Valley Lake Dam last inspected?
Rock Valley Lake Dam was last inspected on August 5, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.