Luna
Luna is an earth dam located in Apache County, Arizona, built in 1911. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Luna
The primary purpose of Luna is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Luna Irrigation Co. (private). It impounds the San Francisco River near Luna, New Mexico.
The dam stands 27 feet tall and stretches 292 feet across, creates a reservoir covering 163 acres, has a maximum storage capacity of 1,800 acre-feet, and collects water from a drainage area of 36 square miles. Completed in 1911, the structure is over a century 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 06/28/2022.
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Location
| State | Arizona |
| County | Apache |
| Nearest City | Luna, New Mexico |
| River/Stream | San Francisco River |
| Coordinates | 33.82806, -109.08222 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 27 ft |
| Dam Height | 27 ft |
| Dam Length | 292 ft |
| Year Completed | 1911 (115 years old) |
Storage & Hydraulics
| NID Storage | 1,800 acre-ft |
| Max Storage | 1,800 acre-ft |
| Normal Storage | 1,390 acre-ft |
| Surface Area | 163 acres |
| Drainage Area | 36 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | LUNA IRRIGATION CO. |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/28/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | AZ00030 |
| Federal ID | AZ00030 |
| More Info | State Dam Safety Program |