Onion Dam
Key Takeaway
Onion Dam is classified as significant hazard in Nevada. Its primary use is irrigation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 48 ft (taller than 79.7% in NV) |
| Dam Length | 320 ft |
| Dam Type | Earth |
| Max Storage | 1.5K acre-ft |
| Normal Storage | 1.5K acre-ft |
| Surface Area | 101 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 3,700 cfs |
| NID ID | NV00005 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
ALDER CREEK RANCH LLC
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Onion Dam?
Onion Dam is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Onion Dam?
Onion Dam is owned by ALDER CREEK RANCH LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
What is the primary purpose of Onion Dam?
Onion Dam serves the following purposes: Irrigation, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Onion Dam?
Onion Dam has a dam height of 48 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 Onion Dam last inspected?
Onion Dam was last inspected on July 18, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.