Dd No A-4

MARMATON RIVER-TR· Allen, Kansas· Built 2004· Earth· 19 ft tall
Low Hazard Flood Risk Reduction Local Government

Key Takeaway

Dd No A-4 is classified as low hazard in Kansas. It was completed in 2004 and is 22 years old. Its primary use is flood risk reduction.

Physical Details

Dam Height 19 ft (taller than 21.5% in KS)
Dam Length1,236 ft
Dam TypeEarth
Max Storage154 acre-ft
Normal Storage22 acre-ft
Surface Area7 acres
Drainage Area1 sq mi
Max Discharge1,272 cfs
Year Completed2004 (22 years old)
NID IDKS09028

Safety Information

Low Hazard

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?

Emergency Action Plan: No
Last Inspection: April 30, 2007
State Regulated: No
Regulatory Agency: KS Dept. of Agriculture

Ownership

MARMATON WJD NO 102

Local Government

Nearby Dams

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Dam KS00185

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Dam KS02694

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Robinson Site

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Dam KS00188

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Dam KS00183

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Dam KS00187

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Bronson City Dam

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Frequently Asked Questions

What is the hazard classification of Dd No A-4?

Dd No A-4 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 A-4?

Dd No A-4 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 A-4 built?

Dd No A-4 was completed in 2004, making it 22 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 A-4?

Dd No A-4 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 A-4?

Dd No A-4 has a dam height of 19 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 A-4 last inspected?

Dd No A-4 was last inspected on April 30, 2007. Inspection dates indicate when a formal review occurred, not the results of that inspection.

Data from the National Inventory of Dams (NID) maintained by the US Army Corps of Engineers. Dam conditions may have changed since the last update. This site is not affiliated with USACE. Do not use for emergency planning — contact your local dam safety program.