Iberlin

S FORK FOUR MILE CREEK· Johnson, Wyoming· Built 1951· Earth· 30 ft tall
Low Hazard Fire Protection Stock Or Small Fish Pond Private

Key Takeaway

Iberlin is classified as low hazard in Wyoming. It was completed in 1951 and is 75 years old. Its primary use is fire protection.

Physical Details

Dam Height 30 ft (taller than 63.1% in WY)
Dam Length330 ft
Dam TypeEarth
Max Storage169 acre-ft
Normal Storage92 acre-ft
Surface Area13 acres
Drainage Area0 sq mi
Max Discharge0 cfs
Year Completed1951 (75 years old)
NID IDWY00505

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: May 18, 2021
State Regulated: Yes
Regulatory Agency: SEO

Ownership

IBERLIN FOUR MILE, LLC

Private

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Coulter 14-3

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Frequently Asked Questions

What is the hazard classification of Iberlin?

Iberlin 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 Iberlin?

Iberlin is owned by IBERLIN FOUR MILE, LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Iberlin built?

Iberlin was completed in 1951, making it 75 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 Iberlin?

Iberlin 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 Iberlin?

Iberlin has a dam height of 30 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 Iberlin last inspected?

Iberlin was last inspected on May 18, 2021. 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.