Pilot Knob Lake Dam
Key Takeaway
Pilot Knob Lake Dam is classified as low hazard in Iowa. It was completed in 1972 and is 54 years old. Its primary use is recreation.
Physical Details
| Dam Height | 18 ft (taller than 5.6% in IA) |
| Dam Length | 210 ft |
| Dam Type | Earth |
| Max Storage | 111 acre-ft |
| Normal Storage | 56 acre-ft |
| Surface Area | 24 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1972 (54 years old) |
| NID ID | IA00439 |
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
Iowa Department of Natural Resources
State Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Pilot Knob Lake Dam?
Pilot Knob 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 Pilot Knob Lake Dam?
Pilot Knob Lake Dam 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 Pilot Knob Lake Dam built?
Pilot Knob Lake 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 Pilot Knob Lake Dam?
Pilot Knob 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 Pilot Knob Lake Dam?
Pilot Knob Lake Dam has a dam height of 18 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 Pilot Knob Lake Dam last inspected?
Pilot Knob Lake Dam was last inspected on June 4, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.