8 - North Sector
Key Takeaway
8 - North Sector is classified as high hazard in Kansas. It was completed in 2006 and is 20 years old. Its primary use is flood risk reduction. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.
Physical Details
| Dam Height | 27 ft (taller than 57.6% in KS) |
| Dam Length | 2,572 ft |
| Dam Type | Earth |
| Max Storage | 2.0K acre-ft |
| Normal Storage | 85 acre-ft |
| Surface Area | 30 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 5,777 cfs |
| Year Completed | 2006 (20 years old) |
| NID ID | KS09283 |
Safety Information
Loss of human life is likely if the dam fails.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
UPPER WALNUT WJD NO 33
Local Government
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Low Hazard 20 ftFrequently Asked Questions
What is the hazard classification of 8 - North Sector?
8 - North Sector is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates 8 - North Sector?
8 - North Sector is owned by UPPER WALNUT WJD NO 33 (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was 8 - North Sector built?
8 - North Sector was completed in 2006, making it 20 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 8 - North Sector?
8 - North Sector 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 8 - North Sector?
8 - North Sector has a dam height of 27 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 8 - North Sector last inspected?
8 - North Sector was last inspected on April 12, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.