Clarence Smith Dam

TR.SOPHIA CK.· Ziebach, South Dakota· Built 1958· Earth· 25 ft tall

Key Takeaway

Clarence Smith Dam is classified as high hazard in South Dakota. It was completed in 1958 and is 68 years old. Its primary use is fire protection. 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 25 ft (taller than 57.4% in SD)
Dam Length492 ft
Dam TypeEarth
Max Storage81 acre-ft
Normal Storage29 acre-ft
Surface Area6 acres
Drainage Area1 sq mi
Max Discharge2,403 cfs
Year Completed1958 (68 years old)
Year Modified1989
NID IDSD00788

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: November 1, 2018
State Regulated: Yes
Regulatory Agency: DANR

Ownership

DOUG YOUNG

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Clarence Smith Dam?

Clarence Smith Dam 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 Clarence Smith Dam?

Clarence Smith Dam is owned by DOUG YOUNG (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Clarence Smith Dam built?

Clarence Smith Dam was completed in 1958, making it 68 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 Clarence Smith Dam?

Clarence Smith Dam serves the following purposes: Fire Protection, Stock, Or Small Fish Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Clarence Smith Dam?

Clarence Smith Dam has a dam height of 25 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 Clarence Smith Dam last inspected?

Clarence Smith Dam was last inspected on November 1, 2018. 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.