Zezas No. 1

GAMMON DRAW· Johnson, Wyoming· Built 1968· Earth· 24 ft tall
Low Hazard Fire Protection Stock Or Small Fish Pond Private

Key Takeaway

Zezas No. 1 is classified as low hazard in Wyoming. It was completed in 1968 and is 58 years old. Its primary use is fire protection.

Physical Details

Dam Height 24 ft (taller than 35.6% in WY)
Dam Length611 ft
Dam TypeEarth
Max Storage67 acre-ft
Normal Storage37 acre-ft
Surface Area6 acres
Drainage Area0 sq mi
Max Discharge0 cfs
Year Completed1968 (58 years old)
NID IDWY01976

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: July 31, 2019
State Regulated: Yes
Regulatory Agency: SEO

Ownership

CAZA RANCHES C/O BRIAN MCCARTY

Private

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Frequently Asked Questions

What is the hazard classification of Zezas No. 1?

Zezas 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 Zezas No. 1?

Zezas No. 1 is owned by CAZA RANCHES C/O BRIAN MCCARTY (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Zezas No. 1 built?

Zezas No. 1 was completed in 1968, making it 58 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 Zezas No. 1?

Zezas 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 Zezas No. 1?

Zezas No. 1 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 Zezas No. 1 last inspected?

Zezas No. 1 was last inspected on July 31, 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.