Bar M No. 1
Key Takeaway
Bar M No. 1 is classified as low hazard in Wyoming. It was completed in 1961 and is 65 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 29 ft (taller than 59.6% in WY) |
| Dam Length | 816 ft |
| Dam Type | Earth |
| Max Storage | 137 acre-ft |
| Normal Storage | 81 acre-ft |
| Surface Area | 9 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 883 cfs |
| Year Completed | 1961 (65 years old) |
| NID ID | WY00151 |
Safety Information
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?
Ownership
BARD RANCH COMPANY
Private
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Low Hazard 30 ftFrequently Asked Questions
What is the hazard classification of Bar M No. 1?
Bar M 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 Bar M No. 1?
Bar M No. 1 is owned by BARD RANCH COMPANY (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Bar M No. 1 built?
Bar M No. 1 was completed in 1961, making it 65 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 Bar M No. 1?
Bar M No. 1 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 Bar M No. 1?
Bar M No. 1 has a dam height of 29 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 Bar M No. 1 last inspected?
Bar M No. 1 was last inspected on August 3, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.