Dams in Sierra County, New Mexico
14Total Dams
11High Hazard
1Significant
Dam Safety in Sierra County, New Mexico
Sierra County has 14 dams tracked in the National Inventory of Dams. Of these, 11 are classified as high hazard — meaning failure would probably cause loss of human life. Another 1 carry a significant hazard classification. Currently, 10 dams have a condition assessment of poor or unsatisfactory.
The average dam in Sierra County is 63 years old. The most common purpose is flood risk reduction. The tallest dam is Cuchillo-negro Dam at 161 ft.
Explore more: Oldest dams in New Mexico · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Cuchillo-negro Dam | High | Satisfactory | 161 | Flood Risk Reduction | 1991 |
| T Or C Site 8c Dam | High | Poor | 119 | Flood Risk Reduction | 1981 |
| Caballo Dam | High | Not Available | 110 | Flood Risk Reduction | 1938 |
| Green Canyon Dam | High | Poor | 104 | Flood Risk Reduction | 1972 |
| Sibley Green Site 4 | High | Poor | 80 | Flood Risk Reduction | 1974 |
| Elephant Butte Dike | High | Not Available | 59 | Flood Risk Reduction | 1920 |
| Sibley Green Site 5 | High | Poor | 39 | Flood Risk Reduction | 1977 |
| County Line Detention Dam | High | Poor | 37 | Flood Risk Reduction | 1956 |
| Caballo Arroyo Dam No. 1 | High | Poor | 36 | Flood Risk Reduction | 1959 |
| St. Anne's Dam | High | Poor | 35 | Flood Risk Reduction | 1960 |
| Marie Street Dam | High | Poor | 22 | Flood Risk Reduction | 1960 |
| Copper Flats Tailings Dam | Significant | Poor | 54 | Tailings | 1980 |
| Grubstake Tailings Dam | Low | Poor | 70 | Tailings | 1992 |
| Percha Diversion Dam | Low | Not Available | 19 | Irrigation | 1918 |