Mcmurry No. 4
Key Takeaway
Mcmurry No. 4 is classified as high hazard in Wyoming. It was completed in 2014 and is 12 years old. Its primary use is fish and wildlife pond. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.
Physical Details
| Dam Height | 64 ft (taller than 96.5% in WY) |
| Dam Length | 682 ft |
| Dam Type | Earth |
| Max Storage | 468 acre-ft |
| Normal Storage | 366 acre-ft |
| Surface Area | 21 acres |
| Drainage Area | 165 sq mi |
| Max Discharge | 241 cfs |
| Year Completed | 2014 (12 years old) |
| NID ID | WY02546 |
Safety Information
Loss of human life is likely if the dam fails.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
EAST ELKHORN RANCH, LLC
Private
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Significant Hazard 24 ftFrequently Asked Questions
What is the hazard classification of Mcmurry No. 4?
Mcmurry No. 4 is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Mcmurry No. 4?
Mcmurry No. 4 is owned by EAST ELKHORN RANCH, LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Mcmurry No. 4 built?
Mcmurry No. 4 was completed in 2014, making it 12 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 Mcmurry No. 4?
Mcmurry No. 4 serves the following purposes: Fish And Wildlife Pond, Fire Protection, Stock, Or Small Fish Pond, Other, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Mcmurry No. 4?
Mcmurry No. 4 has a dam height of 64 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 Mcmurry No. 4 last inspected?
Mcmurry No. 4 was last inspected on August 8, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.