Austin No. 1

AUSTIN DRAW· Johnson, Wyoming· Built 1991· Earth· 22 ft tall
Low Hazard Fire Protection Stock Or Small Fish Pond Private

Key Takeaway

Austin No. 1 is classified as low hazard in Wyoming. It was completed in 1991 and is 35 years old. Its primary use is fire protection.

Physical Details

Dam Height 22 ft (taller than 28.8% in WY)
Dam Length540 ft
Dam TypeEarth
Max Storage217 acre-ft
Normal Storage95 acre-ft
Surface Area24 acres
Drainage Area3 sq mi
Max Discharge2,052 cfs
Year Completed1991 (35 years old)
Year Modified1992
NID IDWY02099

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 25, 2019
State Regulated: Yes
Regulatory Agency: SEO

Ownership

TTT RANCH CORP

Private

Nearby Dams

Posy No. 1

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Will No. 1

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Leslie No. 2

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Turkey Springs

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South Wall

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South Wall No. 3

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Big V

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Bass Pond

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Frequently Asked Questions

What is the hazard classification of Austin No. 1?

Austin No. 1 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 Austin No. 1?

Austin No. 1 is owned by TTT RANCH CORP (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Austin No. 1 built?

Austin No. 1 was completed in 1991, making it 35 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 Austin No. 1?

Austin No. 1 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 Austin No. 1?

Austin No. 1 has a dam height of 22 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 Austin No. 1 last inspected?

Austin No. 1 was last inspected on June 25, 2019. 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.