Sides No. 1

SIDES DRAW· Niobrara, Wyoming· Built 1952· Earth· 30 ft tall
Low Hazard Irrigation Private

Key Takeaway

Sides No. 1 is classified as low hazard in Wyoming. It was completed in 1952 and is 74 years old. Its primary use is irrigation.

Physical Details

Dam Height 30 ft (taller than 63.1% in WY)
Dam Length503 ft
Dam TypeEarth
Max Storage234 acre-ft
Normal Storage148 acre-ft
Surface Area15 acres
Drainage Area0 sq mi
Max Discharge0 cfs
Year Completed1952 (74 years old)
NID IDWY00529

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: August 6, 2020
State Regulated: Yes
Regulatory Agency: SEO

Ownership

WERNER RANCHES LIMITED PARTNERSHIP

Private

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Wildcat No. 1

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Dogie No. 3

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Wildcat No. 3

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James Thompson No. 1 Stock

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Wildcat No. 2

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Low Hazard 35 ft

Paddy No. 1

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Low Hazard 29 ft

Paddy No. 2

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Low Hazard 25 ft

Frequently Asked Questions

What is the hazard classification of Sides No. 1?

Sides 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 Sides No. 1?

Sides No. 1 is owned by WERNER RANCHES LIMITED PARTNERSHIP (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Sides No. 1 built?

Sides No. 1 was completed in 1952, making it 74 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 Sides No. 1?

Sides No. 1 serves the following purposes: Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Sides No. 1?

Sides No. 1 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 Sides No. 1 last inspected?

Sides No. 1 was last inspected on August 6, 2020. 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.