30Total Dams
13High Hazard
9Significant
Dam Safety in San Juan County, New Mexico
San Juan County has 30 dams tracked in the National Inventory of Dams. Of these, 13 are classified as high hazard — meaning failure would probably cause loss of human life. Another 9 carry a significant hazard classification. Currently, 10 dams have a condition assessment of poor or unsatisfactory.
The average dam in San Juan County is 53 years old. The most common purpose is other. The tallest dam is Navajo Dam at 402 ft.
Explore more: Oldest dams in New Mexico · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Navajo Dam | High | Not assessed | 402 | Flood Risk Reduction | 1963 |
| Morgan Dam | High | Satisfactory | 165 | Other | 1961 |
| Cutter | High | Satisfactory | 145 | Irrigation | 1972 |
| Farmington Lake Dam | High | Fair | 117 | Water Supply | 1964 |
| Willetto Dam | High | Not assessed | 98 | 1972 | |
| Jackson Lake Dam | High | Poor | 45 | Irrigation | 1919 |
| Bloomfield Dam No. 1 | High | Satisfactory | 45 | Water Supply | 1957 |
| Blanco Reservoir Dam | High | Satisfactory | 43 | Other | 1957 |
| Captain Tom | High | Fair | 29 | Recreation | 1937 |
| Martin Arroyo Dam | High | Satisfactory | 25 | Flood Risk Reduction | 1987 |
| Todacheene | High | Poor | 23 | Recreation | 1966 |
| Thirtieth Street Dam | High | Poor | 22 | Flood Risk Reduction | 1979 |
| Lee/hammond Water Treatment Pond | High | Satisfactory | 21 | Water Supply | 1999 |
| Aps Lined Decant Water Pond | Significant | Satisfactory | 86 | Tailings | 2003 |
| Aps Lined Ash Impoundment | Significant | Satisfactory | 40 | Tailings | 2003 |
| San Juan South Pond 3 | Significant | Poor | 34 | Other | 1982 |
| San Juan South Pond 5 | Significant | Poor | 33 | Other | 1982 |
| San Juan South Pond 1 | Significant | Poor | 33 | Other | 1982 |
| San Juan South Pond 2 | Significant | Poor | 31 | Other | 1982 |
| San Juan South Pond 4 | Significant | Poor | 30 | Other | 1982 |
| North Star Raw Water Storage Dam | Significant | Satisfactory | 20 | Water Supply | 2003 |
| Kin Bineola | Significant | Unsatisfactory | 15 | Flood Risk Reduction | |
| Aps Ash Pond Tailings Dam No. 3 | Low | Satisfactory | 95 | Tailings | 1976 |
| Aps Ash Pond Tailings Dam No. 6 | Low | Satisfactory | 90 | Tailings | 1983 |
| El Paso Natural Gas Dam No. 5 | Low | Satisfactory | 42 | Recreation | 1964 |
| Nageezi Dam | Low | Not assessed | 23 | Debris Control | 1954 |
| Bolack No 1 Dam | Low | Poor | 20 | Recreation | 1962 |
| Juans Lake | Low | Not assessed | 18 | Irrigation | |
| Un-named Dam 1 | Undetermined | Not assessed | 44 | ||
| Un-named Dam 2 | Undetermined | Not assessed | 25 |