Dams in Tuolumne County, California
32Total Dams
19High Hazard
3Significant
Dam Safety in Tuolumne County, California
Tuolumne County has 32 dams tracked in the National Inventory of Dams. Of these, 19 are classified as high hazard — meaning failure would probably cause loss of human life. Another 3 carry a significant hazard classification. Currently, 1 dams have a condition assessment of poor or unsatisfactory.
The average dam in Tuolumne County is 79 years old. The most common purpose is water supply. The tallest dam is Donnells at 317 ft.
Explore more: Oldest dams in California · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Donnells | High | Satisfactory | 317 | Hydroelectric | 1958 |
| Cherry Valley | High | Fair | 315 | Other | 1956 |
| O`shaughnessy | High | Satisfactory | 312 | Water Supply | 1923 |
| Beardsley | High | Fair | 284 | Hydroelectric | 1957 |
| New Spicer Meadow | High | Satisfactory | 265 | Hydroelectric | 1989 |
| Priest | High | Satisfactory | 168 | Other | 1923 |
| Strawberry | High | Fair | 143 | Hydroelectric | 1916 |
| Relief | High | Poor | 140 | Hydroelectric | 1909 |
| Lyons | High | Satisfactory | 132 | Hydroelectric | 1930 |
| Big Creek | High | Satisfactory | 120 | Water Supply | 1969 |
| Gasburg Creek Dike | High | Satisfactory | 75 | Flood Risk Reduction | 1971 |
| Lake Eleanor | High | Satisfactory | 61 | Water Supply | 1918 |
| Moccasin Ler | High | Fair | 60 | Other | 1930 |
| Brentwood Park | High | Satisfactory | 58 | Water Supply | 1964 |
| Phoenix | High | Satisfactory | 52 | Other | 1880 |
| Groveland Wastewater Reclamation #2 | High | Satisfactory | 45 | Water Supply | 1981 |
| San Diego Reservoir | High | Satisfactory | 39 | Water Supply | 1860 |
| Twain Harte | High | Satisfactory | 36 | Water Supply | 1928 |
| Tuolumne Log Pond | High | Satisfactory | 24 | Water Supply | 1912 |
| Mckays Point Diversion | Significant | Satisfactory | 242 | Hydroelectric | 1989 |
| Don Pedro Dike A | Significant | Satisfactory | 25 | Hydroelectric | 1971 |
| Herring Creek Reservoir | Significant | Not Rated | 16 | Fish and Wildlife Pond | 1939 |
| Quartz | Low | Satisfactory | 104 | Water Supply | 1978 |
| Gardella | Low | Satisfactory | 69 | Water Supply | 2009 |
| Early Intake | Low | Fair | 56 | Other | 1925 |
| Grinding Rock | Low | Satisfactory | 55 | Water Supply | 1979 |
| Stanislaus Forebay East | Low | Satisfactory | 55 | Hydroelectric | 1908 |
| Beaver Creek Diversion | Low | Satisfactory | 54 | Hydroelectric | 1989 |
| Beardsley Afterbay | Low | Satisfactory | 33 | Hydroelectric | 1958 |
| Kilmer | Low | Satisfactory | 31 | Water Supply | 1953 |
| Middle Cooperstown | Low | Satisfactory | 24 | Water Supply | 1947 |
| Leland Meadows | Low | Satisfactory | 17 | Water Supply | 1978 |