Dd No 1-1a
Key Takeaway
Dd No 1-1a is classified as low hazard in Kansas. It was completed in 1995 and is 31 years old. Its primary use is flood risk reduction.
Physical Details
| Dam Height | 37 ft (taller than 89.2% in KS) |
| Dam Length | 600 ft |
| Dam Type | Earth |
| Max Storage | 476 acre-ft |
| Normal Storage | 43 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 2 sq mi |
| Year Completed | 1995 (31 years old) |
| NID ID | KS07696 |
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
MARMATON WJD NO 102
Local Government
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What is the hazard classification of Dd No 1-1a?
Dd No 1-1a 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 1-1a?
Dd No 1-1a is owned by MARMATON WJD NO 102 (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Dd No 1-1a built?
Dd No 1-1a was completed in 1995, making it 31 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 1-1a?
Dd No 1-1a serves the following purposes: Flood Risk Reduction, Debris Control. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Dd No 1-1a?
Dd No 1-1a has a dam height of 37 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 Dd No 1-1a last inspected?
Dd No 1-1a was last inspected on October 27, 1998. Inspection dates indicate when a formal review occurred, not the results of that inspection.