Patra No. 3

S PRONG CABALLO· Campbell, Wyoming· Built 1925· Earth· 24 ft tall
Low Hazard Fire Protection Stock Or Small Fish Pond Private

Key Takeaway

Patra No. 3 is classified as low hazard in Wyoming. It was completed in 1925 and is 101 years old. Its primary use is fire protection.

Physical Details

Dam Height 24 ft (taller than 35.6% in WY)
Dam Length1,092 ft
Dam TypeEarth
Max Storage291 acre-ft
Normal Storage88 acre-ft
Surface Area30 acres
Drainage Area0 sq mi
Max Discharge0 cfs
Year Completed1925 (101 years old)
NID IDWY01019

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: June 28, 2023
State Regulated: Yes
Regulatory Agency: SEO

Ownership

HEILAND LAND COMPANY, LLC

Private

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Lee Mankin

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Big Dam

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Stone No. 1

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Charlie

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Barlow No. 1

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Frequently Asked Questions

What is the hazard classification of Patra No. 3?

Patra No. 3 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 Patra No. 3?

Patra No. 3 is owned by HEILAND LAND COMPANY, LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Patra No. 3 built?

Patra No. 3 was completed in 1925, making it 101 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 Patra No. 3?

Patra No. 3 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 Patra No. 3?

Patra No. 3 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 Patra No. 3 last inspected?

Patra No. 3 was last inspected on June 28, 2023. 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.