Mosaic Potash Carlsbad Clay Settling Dam
Mosaic Potash Carlsbad Clay Settling Dam is an earth dam located in Eddy County, New Mexico, built in 2005. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Mosaic Potash Carlsbad Clay Settling Dam
The primary purpose of Mosaic Potash Carlsbad Clay Settling Dam is tailings. Tailings dams contain waste material from mining operations — typically a slurry of finely ground rock left over after valuable minerals have been extracted. These structures require ongoing monitoring because tailings can contain heavy metals and other contaminants. The dam is owned by Mosaic Potash Carlsbad Inc. (private). It impounds the Nash Draw-tr near Carlsbad.
The dam stands 19 feet tall and stretches 4,400 feet across, creates a reservoir covering 86 acres, has a maximum storage capacity of 638 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 2005, the structure is relatively new.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 07/24/2019.
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Location
| State | New Mexico |
| County | Eddy |
| Nearest City | Carlsbad |
| River/Stream | Nash Draw-tr |
| Coordinates | 32.38330, -103.93000 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 19 ft |
| Dam Height | 17 ft |
| Dam Length | 4,400 ft |
| Year Completed | 2005 (21 years old) |
Storage & Hydraulics
| NID Storage | 638 acre-ft |
| Max Storage | 638 acre-ft |
| Normal Storage | 340 acre-ft |
| Surface Area | 86 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 984 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Tailings |
| Owner | MOSAIC POTASH CARLSBAD INC. |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 07/24/2019 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NM00659 |
| Federal ID | NM00659 |
| More Info | State Dam Safety Program |