Rainbow Lake Dam
Key Takeaway
Rainbow 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 | 30 ft (taller than 48.2% in IA) |
| Dam Length | 450 ft |
| Dam Type | Earth |
| Max Storage | 135 acre-ft |
| Normal Storage | 80 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1952 (74 years old) |
| NID ID | IA01969 |
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
Gary Lamb
Private
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Low Hazard 27 ftFrequently Asked Questions
What is the hazard classification of Rainbow Lake Dam?
Rainbow 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 Rainbow Lake Dam?
Rainbow Lake Dam is owned by Gary Lamb (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Rainbow Lake Dam built?
Rainbow 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 Rainbow Lake Dam?
Rainbow Lake Dam serves the following purposes: Recreation, Fire Protection, Stock, Or Small Fish Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Rainbow Lake Dam?
Rainbow Lake Dam has a dam height of 30 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 Rainbow Lake Dam last inspected?
Rainbow Lake Dam was last inspected on July 29, 1993. Inspection dates indicate when a formal review occurred, not the results of that inspection.