Frd No 21
Key Takeaway
Frd No 21 is classified as low hazard in Kansas. It was completed in 1971 and is 55 years old. Its primary use is flood risk reduction.
Physical Details
| Dam Height | 29 ft (taller than 67.7% in KS) |
| Dam Length | 645 ft |
| Dam Type | Earth |
| Max Storage | 136 acre-ft |
| Normal Storage | 22 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 0 sq mi |
| Year Completed | 1971 (55 years old) |
| NID ID | KS02368 |
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
UPPER BLACK VERMILLION WJD NO 37
Local Government
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Low Hazard 22 ftFrequently Asked Questions
What is the hazard classification of Frd No 21?
Frd No 21 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 Frd No 21?
Frd No 21 is owned by UPPER BLACK VERMILLION WJD NO 37 (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Frd No 21 built?
Frd No 21 was completed in 1971, making it 55 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 Frd No 21?
Frd No 21 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 Frd No 21?
Frd No 21 has a dam height of 29 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.