Darrah No. 3
Key Takeaway
Darrah No. 3 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 | 20 ft (taller than 21.5% in WY) |
| Dam Length | 165 ft |
| Dam Type | Earth |
| Max Storage | 122 acre-ft |
| Normal Storage | 47 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1908 (118 years old) |
| NID ID | WY01189 |
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
SHIRLEY B. BALES TRUST
Private
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High HazardFrequently Asked Questions
What is the hazard classification of Darrah No. 3?
Darrah No. 3 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 Darrah No. 3?
Darrah No. 3 is owned by SHIRLEY B. BALES TRUST (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Darrah No. 3 built?
Darrah No. 3 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 Darrah No. 3?
Darrah No. 3 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 Darrah No. 3?
Darrah No. 3 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 Darrah No. 3 last inspected?
Darrah No. 3 was last inspected on September 11, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.