E-21b
Key Takeaway
E-21b is classified as low hazard in Kansas. It was completed in 1958 and is 68 years old. Its primary use is flood risk reduction.
Physical Details
| Dam Height | 40 ft (taller than 92.6% in KS) |
| Dam Length | 500 ft |
| Dam Type | Earth |
| Max Storage | 293 acre-ft |
| Normal Storage | 65 acre-ft |
| Surface Area | 11 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 1,830 cfs |
| Year Completed | 1958 (68 years old) |
| Year Modified | 2012 |
| NID ID | KS02755 |
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
DELAWARE WJD NO 10
Local Government
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Low Hazard 26 ftFrequently Asked Questions
What is the hazard classification of E-21b?
E-21b 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 E-21b?
E-21b is owned by DELAWARE WJD NO 10 (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was E-21b built?
E-21b was completed in 1958, making it 68 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 E-21b?
E-21b serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is E-21b?
E-21b has a dam height of 40 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 E-21b last inspected?
E-21b was last inspected on July 17, 2012. Inspection dates indicate when a formal review occurred, not the results of that inspection.