Caballo Arroyo Dam No. 4
Caballo Arroyo Dam No. 4 is an earth dam located in Doña Ana County, New Mexico, built in 1960. It carries a Significant hazard potential classification and has a poor condition assessment.
About Caballo Arroyo Dam No. 4
The primary purpose of Caballo Arroyo Dam No. 4 is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Caballo Soil & Water Conservation District (local government). It impounds the Wardy & Hedgecock Arroyos near Hatch.
The dam stands 29 feet tall and stretches 3,150 feet across, has a maximum storage capacity of 351 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1960, the structure is well into its service life at over 50 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 06/02/2016.
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Location
| State | New Mexico |
| County | Doña Ana |
| Nearest City | Hatch |
| River/Stream | Wardy & Hedgecock Arroyos |
| Coordinates | 32.68142, -107.22669 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 29 ft |
| Dam Height | 21 ft |
| Dam Length | 3,150 ft |
| Year Completed | 1960 (66 years old) |
Storage & Hydraulics
| NID Storage | 351 acre-ft |
| Max Storage | 351 acre-ft |
| Drainage Area | 3 sq mi |
| Max Discharge | 3,156 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | CABALLO SOIL & WATER CONSERVATION DISTRICT |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 06/02/2016 |
| Emergency Action Plan | No |
Identifiers
| NID ID | NM00219 |
| Federal ID | NM00219 |
| More Info | State Dam Safety Program |