Dams in Trinity County, California
6Total Dams
5High Hazard
1Significant
Dam Safety in Trinity County, California
Trinity County has 6 dams tracked in the National Inventory of Dams. Of these, 5 are classified as high hazard — meaning failure would probably cause loss of human life. Another 1 carry a significant hazard classification.
The average dam in Trinity County is 54 years old. The most common purpose is water supply. The tallest dam is Trinity Dam at 538 ft.
Explore more: Oldest dams in California · Tallest dams · High risk dams · Largest reservoirs
Data note: Hazard potential describes the consequences if a dam failed; it does not predict the likelihood of failure. Inspection, condition, and emergency-plan fields can be incomplete or delayed. Check state dam-safety officials and local emergency managers for official guidance.
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Trinity Dam | High | Not Available | 538 | Hydroelectric | 1962 |
| R. W. Matthews | High | Satisfactory | 150 | Water Supply | 1962 |
| Lewiston Dam | High | Not Available | 91 | Water Supply | 1963 |
| Buckhorn Dam | High | Not Available | 87 | 1991 | |
| Ewing | High | Satisfactory | 63 | Water Supply | 1972 |
| Jones Ranch | Significant | Satisfactory | 36 | Water Supply | 1980 |