Stone No. 1

BONE PILE CREEK· Campbell, Wyoming· Built 1908· Earth· 9 ft tall
Low Hazard Irrigation Private

Key Takeaway

Stone No. 1 is classified as low hazard in Wyoming. It was completed in 1908 and is 118 years old. Its primary use is irrigation.

Physical Details

Dam Height 9 ft (taller than 2.3% in WY)
Dam Length1,525 ft
Dam TypeEarth
Max Storage73 acre-ft
Normal Storage55 acre-ft
Surface Area18 acres
Drainage Area0 sq mi
Max Discharge0 cfs
Year Completed1908 (118 years old)
NID IDWY00973

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 24, 2020
State Regulated: Yes
Regulatory Agency: SEO

Ownership

CONTURA WYOMING LAND LLC

Private

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Frequently Asked Questions

What is the hazard classification of Stone No. 1?

Stone 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 Stone No. 1?

Stone No. 1 is owned by CONTURA WYOMING LAND LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Stone No. 1 built?

Stone No. 1 was completed in 1908, making it 118 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 Stone No. 1?

Stone 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 Stone No. 1?

Stone No. 1 has a dam height of 9 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 Stone No. 1 last inspected?

Stone No. 1 was last inspected on July 24, 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.