Dd No 4 (Sp-4)

WALNUT RIVER-TR· Butler, Kansas· Built 1994· Earth· 24 ft tall
Low Hazard Flood Risk Reduction Debris Control Local Government

Key Takeaway

Dd No 4 (Sp-4) is classified as low hazard in Kansas. It was completed in 1994 and is 32 years old. Its primary use is flood risk reduction.

Physical Details

Dam Height 24 ft (taller than 41.9% in KS)
Dam Length1,300 ft
Dam TypeEarth
Max Storage857 acre-ft
Normal Storage53 acre-ft
Surface Area17 acres
Drainage Area2 sq mi
Max Discharge1,335 cfs
Year Completed1994 (32 years old)
NID IDKS07698

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: July 18, 1995
State Regulated: Yes
Regulatory Agency: KS Dept. of Agriculture

Ownership

UPPER WALNUT WJD NO 33

Local Government

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Frequently Asked Questions

What is the hazard classification of Dd No 4 (Sp-4)?

Dd No 4 (Sp-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 4 (Sp-4)?

Dd No 4 (Sp-4) 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 Dd No 4 (Sp-4) built?

Dd No 4 (Sp-4) was completed in 1994, making it 32 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 4 (Sp-4)?

Dd No 4 (Sp-4) 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 4 (Sp-4)?

Dd No 4 (Sp-4) has a dam height of 24 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 4 (Sp-4) last inspected?

Dd No 4 (Sp-4) was last inspected on July 18, 1995. 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.