Asarco 82 is an earth dam located in Gila County, Arizona, built in 1983. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 48 ft48 ft tall and 520 ft long, taller than 92% of U.S. dams with a recorded height. Height is drawn to scale against a ten-story building, about 100 ft; the profile is a generic embankment section and the water level is illustrative.
About Asarco 82
Asarco 82 is a dam in Gila, Arizona. The dam is owned by Asarco, Grupo Mexico (private). It impounds the Gila River - Os near Hayden (outskirts).
The dam stands 48 feet tall and stretches 520 feet across, creates a reservoir covering 10 acres, has a maximum storage capacity of 113 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1983, the structure is 43 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 04/19/2022.
At 48 feet, this dam is taller than 92% of dams nationwide.
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Location
| State | Arizona |
| County | Gila |
| Nearest City | Hayden (outskirts) |
| River/Stream | Gila River - Os |
| Coordinates | 32.99833, -110.78083 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 48 ft |
| Dam Height | 48 ft |
| Dam Length | 520 ft |
| Year Completed | 1983 (43 years old) |
Storage & Hydraulics
| NID Storage | 113 acre-ft |
| Max Storage | 113 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | None |
Ownership & Safety
| Purpose | Other |
| Owner | Asarco, Grupo Mexico |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 04/19/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | AZ00195 |
| Federal ID | AZ00195 |
| More Info | State Dam Safety Program |