Frd No 11

N FORK BLACK VERMILLION RIV-TR· Marshall, Kansas· Built 1971· Earth· 29 ft tall

High Hazard Flood Risk Reduction Local Government

Key Takeaway

Frd No 11 is classified as high hazard in Kansas. It was completed in 1971 and is 55 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	29 ft (taller than 67.7% in KS)
Dam Length	965 ft
Dam Type	Earth
Max Storage	235 acre-ft
Normal Storage	25 acre-ft

Surface Area	6 acres
Drainage Area	0 sq mi
Year Completed	1971 (55 years old)
NID ID	KS02365

Safety Information

High Hazard

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?

Emergency Action Plan: Yes

Last Inspection: April 1, 2023

State Regulated: Yes

Regulatory Agency: KS Dept. of Agriculture

Ownership

UPPER BLACK VERMILLION WJD NO 37

Local Government

Nearby Dams

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Frd No 27

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Frd No 10

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Frd No 28

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Low Hazard 29 ft

Frd No 15

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Low Hazard 28 ft

Frd No 56

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Low Hazard 29 ft

Frequently Asked Questions

What is the hazard classification of Frd No 11?

Frd No 11 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 Frd No 11?

Frd No 11 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 11 built?

Frd No 11 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 11?

Frd No 11 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 11?

Frd No 11 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.

When was Frd No 11 last inspected?

Frd No 11 was last inspected on April 1, 2023. 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.