Mcpherson

MCPHERSON DRAW TR CASPER CR· Natrona, Wyoming· Built 1923· Earth· 20 ft tall

Key Takeaway

Mcpherson is classified as low hazard in Wyoming. It was completed in 1923 and is 103 years old. Its primary use is irrigation.

Physical Details

Dam Height 20 ft (taller than 21.5% in WY)
Dam Length510 ft
Dam TypeEarth
Max Storage168 acre-ft
Normal Storage113 acre-ft
Surface Area11 acres
Drainage Area0 sq mi
Max Discharge0 cfs
Year Completed1923 (103 years old)
NID IDWY01754

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: September 22, 2022
State Regulated: Yes
Regulatory Agency: SEO

Ownership

B.B. BROOKS RANCH

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Mcpherson?

Mcpherson 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 Mcpherson?

Mcpherson is owned by B.B. BROOKS RANCH (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Mcpherson built?

Mcpherson was completed in 1923, making it 103 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 Mcpherson?

Mcpherson serves the following purposes: Irrigation, 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 Mcpherson?

Mcpherson has a dam height of 20 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 Mcpherson last inspected?

Mcpherson was last inspected on September 22, 2022. 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.