Frd No 31

WAKARUSA RIVER-TR· Douglas, Kansas· Built 1971· Earth· 40 ft tall

High Hazard Flood Risk Reduction Local Government

Key Takeaway

Frd No 31 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	40 ft (taller than 92.6% in KS)
Dam Length	1,048 ft
Dam Type	Earth
Max Storage	720 acre-ft
Normal Storage	86 acre-ft

Surface Area	14 acres
Drainage Area	2 sq mi
Max Discharge	2,455 cfs
Year Completed	1971 (55 years old)
NID ID	KS02258

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: May 4, 2022

State Regulated: Yes

Regulatory Agency: KS Dept. of Agriculture

Ownership

WAKARUSA WJD NO 35

Local Government

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Frequently Asked Questions

What is the hazard classification of Frd No 31?

Frd No 31 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 31?

Frd No 31 is owned by WAKARUSA WJD NO 35 (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Frd No 31 built?

Frd No 31 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 31?

Frd No 31 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 31?

Frd No 31 has a dam height of 40 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 31 last inspected?

Frd No 31 was last inspected on May 4, 2022. 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.