Patterson
Key Takeaway
Patterson is classified as low hazard in Arizona. It was completed in 1944 and is 82 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 17 ft (taller than 22.8% in AZ) |
| Dam Length | 2,170 ft |
| Dam Type | Earth |
| Normal Storage | 534 acre-ft |
| Surface Area | 97 acres |
| Year Completed | 1944 (82 years old) |
| NID ID | AZ00262 |
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
ARIZONA STATE LAND DEPARTMENT;JMP RANCHES INC.
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Patterson?
Patterson 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 Patterson?
Patterson is owned by ARIZONA STATE LAND DEPARTMENT;JMP RANCHES INC. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Patterson built?
Patterson was completed in 1944, making it 82 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 Patterson?
Patterson serves the following purposes: 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 Patterson?
Patterson has a dam height of 17 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 Patterson last inspected?
Patterson was last inspected on November 6, 2009. Inspection dates indicate when a formal review occurred, not the results of that inspection.