Mollison Dam

TR MEDICINE CREEK· Hughes, South Dakota· Built 2000· Earth· 32 ft tall
Low Hazard Fire Protection Stock Or Small Fish Pond Fish And Wildlife Pond Recreation Private

Key Takeaway

Mollison Dam is classified as low hazard in South Dakota. It was completed in 2000 and is 26 years old. Its primary use is fire protection.

Physical Details

Dam Height 32 ft (taller than 90.4% in SD)
Dam Length226 ft
Dam TypeEarth
Max Storage140 acre-ft
Normal Storage78 acre-ft
Surface Area8 acres
Drainage Area3 sq mi
Max Discharge1,350 cfs
Year Completed2000 (26 years old)
NID IDSD02480

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: September 24, 2001
State Regulated: Yes
Regulatory Agency: DANR

Ownership

SUSAN MOLLISON

Private

Nearby Dams

Norman Nystrom

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Frank Hayes

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Low Hazard 11 ft

Lynn Beals

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Low Hazard 15 ft

Garber Dam

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Low Hazard 32 ft

Feller Dam

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Low Hazard 19 ft

Hattum Dam

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Low Hazard 31 ft

Double Dam

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Low Hazard 21 ft

Williams No 3 (Nid)

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Low Hazard 23 ft

Frequently Asked Questions

What is the hazard classification of Mollison Dam?

Mollison Dam 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 Mollison Dam?

Mollison Dam is owned by SUSAN MOLLISON (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Mollison Dam built?

Mollison Dam was completed in 2000, making it 26 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 Mollison Dam?

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

How tall is Mollison Dam?

Mollison Dam has a dam height of 32 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 Mollison Dam last inspected?

Mollison Dam was last inspected on September 24, 2001. 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.