Dd No 21
Key Takeaway
Dd No 21 is classified as low hazard in Kansas. It was completed in 1986 and is 40 years old. Its primary use is flood risk reduction.
Physical Details
| Dam Height | 21 ft (taller than 31.3% in KS) |
| Dam Length | 1,100 ft |
| Dam Type | Earth |
| Max Storage | 263 acre-ft |
| Normal Storage | 32 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 800 cfs |
| Year Completed | 1986 (40 years old) |
| NID ID | KS07209 |
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
WALNUT-WEST CREEKS WD NO 72
Local Government
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Low Hazard 25 ftFrequently Asked Questions
What is the hazard classification of Dd No 21?
Dd 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 Dd No 21?
Dd No 21 is owned by WALNUT-WEST CREEKS WD NO 72 (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Dd No 21 built?
Dd No 21 was completed in 1986, making it 40 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 Dd No 21?
Dd 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 Dd No 21?
Dd No 21 has a dam height of 21 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.