Big Supai Tank
Key Takeaway
Big Supai Tank is classified as low hazard in Arizona. It was completed in 1882 and is 144 years old. Its primary use is other.
Physical Details
| Dam Height | 34 ft (taller than 61.6% in AZ) |
| Dam Length | 790 ft |
| Dam Type | Earth |
| Normal Storage | 56 acre-ft |
| Surface Area | 9 acres |
| Drainage Area | 2 sq mi |
| Year Completed | 1882 (144 years old) |
| NID ID | AZ00287 |
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
WARREN SMITH CONTRACTING, INC.
Private
Nearby Dams
Mclellan
Coconino, AZ
Low Hazard 21 ftWest Cataract Creek
Coconino, AZ
Significant Hazard 36 ftCity
Coconino, AZ
High Hazard 47 ftSanta Fe
Coconino, AZ
High Hazard 42 ftSweetwood (K4)
Coconino, AZ
Low Hazard 18 ftKaibab
Coconino, AZ
Low Hazard 36 ftMasonry #2
Coconino, AZ
High Hazard 48 ftDogtown
Coconino, AZ
Significant Hazard 32 ftFrequently Asked Questions
What is the hazard classification of Big Supai Tank?
Big Supai Tank 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 Big Supai Tank?
Big Supai Tank is owned by WARREN SMITH CONTRACTING, INC. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Big Supai Tank built?
Big Supai Tank was completed in 1882, making it 144 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 Big Supai Tank?
Big Supai Tank serves the following purposes: Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Big Supai Tank?
Big Supai Tank has a dam height of 34 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 Big Supai Tank last inspected?
Big Supai Tank was last inspected on October 26, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.