Oneal Lake
Key Takeaway
Oneal Lake is classified as low hazard in Arizona. It was completed in 1894 and is 132 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 10 ft (taller than 5.5% in AZ) |
| Dam Length | 560 ft |
| Dam Type | Earth |
| Normal Storage | 89 acre-ft |
| Surface Area | 13 acres |
| Year Completed | 1894 (132 years old) |
| NID ID | AZ00319 |
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
MURPHY VENTURES LLC
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Oneal Lake?
Oneal Lake 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 Oneal Lake?
Oneal Lake is owned by MURPHY VENTURES LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Oneal Lake built?
Oneal Lake was completed in 1894, making it 132 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 Oneal Lake?
Oneal Lake 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 Oneal Lake?
Oneal Lake has a dam height of 10 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 Oneal Lake last inspected?
Oneal Lake was last inspected on May 8, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.