75Total Dams
8High Hazard
10Significant
Dam Safety in Modoc County, California
Modoc County has 75 dams tracked in the National Inventory of Dams. Of these, 8 are classified as high hazard — meaning failure would probably cause loss of human life. Another 10 carry a significant hazard classification. Currently, 2 dams have a condition assessment of poor or unsatisfactory.
The average dam in Modoc County is 88 years old. The most common purpose is water supply. The tallest dam is West Valley at 65 ft.
Explore more: Oldest dams in California · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| West Valley | High | Satisfactory | 65 | Water Supply | 1936 |
| Big Sage | High | Satisfactory | 49 | Water Supply | 1921 |
| Dorris Dam | High | Fair | 25 | Irrigation | 1930 |
| Thomas Briles | High | Satisfactory | 23 | Water Supply | 1910 |
| James Porter | High | Satisfactory | 21 | Water Supply | 1928 |
| Roberts | High | Satisfactory | 17 | Other | 1905 |
| Lauer | High | Not assessed | 13 | Irrigation | 1895 |
| Clear Lake Dike 1 | High | Not assessed | 13 | Irrigation | 1910 |
| Toreson | Significant | Satisfactory | 55 | Water Supply | 1898 |
| Taylor Creek No. 1 | Significant | Satisfactory | 34 | Other | 1952 |
| Kelley Hot Spring Fish | Significant | Poor | 30 | ||
| Donovan | Significant | Satisfactory | 28 | Water Supply | 1953 |
| Janes Flat | Significant | Not assessed | 22 | Irrigation | 1918 |
| Little Juniper | Significant | Satisfactory | 22 | Other | 1926 |
| Reservoir C | Significant | Not assessed | 20 | Fish and Wildlife Pond | 1911 |
| Fairchild (res F) | Significant | Not assessed | 20 | Fish and Wildlife Pond | 1914 |
| Cummings Reservoir No. 1 | Significant | Satisfactory | 11 | Water Supply | 1912 |
| Hackamore Reservoir | Significant | Not assessed | 10 | Fire Protection, Stock, Or Small Fish Pond | 1907 |
| Burger | Low | Satisfactory | 47 | Water Supply | 1968 |
| S-x | Low | Satisfactory | 45 | Water Supply | 1917 |
| Poison Springs | Low | Satisfactory | 43 | Other | 1957 |
| Schadler | Low | Satisfactory | 39 | Other | 1967 |
| Renner Sibley Creek | Low | Satisfactory | 28 | Water Supply | 1959 |
| Plum Canyon | Low | Satisfactory | 26 | Water Supply | 1913 |
| Mcginty | Low | Not assessed | 23 | 1970 | |
| Ingals Swamp | Low | Satisfactory | 23 | Water Supply | 1918 |
| Shedd | Low | Satisfactory | 22 | Water Supply | 1962 |
| Cloverswale | Low | Satisfactory | 21 | Water Supply | 1973 |
| Carpenter Wilson | Low | Satisfactory | 21 | Other | 1948 |
| Bayley Reservoir | Low | Satisfactory | 20 | Water Supply | 1954 |
| Capik | Low | Satisfactory | 20 | Other | 1965 |
| Rye Grass Swale | Low | Satisfactory | 20 | Water Supply | 1923 |
| Duncan | Low | Satisfactory | 19 | Water Supply | 1919 |
| Leonard Johnson | Low | Satisfactory | 18 | Water Supply | 1948 |
| Big Johnson | Low | Satisfactory | 18 | Water Supply | 1959 |
| Danhauser | Low | Satisfactory | 17 | Water Supply | 1890 |
| Clarke | Low | Satisfactory | 17 | Water Supply | 1939 |
| Davis Creek Orchard | Low | Satisfactory | 17 | Water Supply | 1975 |
| White | Low | Poor | 16 | Water Supply | 1918 |
| Graven | Low | Satisfactory | 15 | Water Supply | 1917 |
| Huffman Antelope | Low | Satisfactory | 15 | Water Supply | 1922 |
| Upper Pasture | Low | Satisfactory | 15 | Water Supply | |
| Hines Brothers | Low | Satisfactory | 14 | Water Supply | 1955 |
| A and C | Low | Satisfactory | 13 | Water Supply | 1923 |
| Reservoir M | Low | Not assessed | 13 | Irrigation | 1977 |
| Halls Meadows | Low | Satisfactory | 13 | Water Supply | 1941 |
| Wildhorse | Low | Not assessed | 12 | Fire Protection, Stock, Or Small Fish Pond | 1934 |
| Enquist | Low | Satisfactory | 12 | Water Supply | 1919 |
| Householder | Low | Not assessed | 12 | Fire Protection, Stock, Or Small Fish Pond | 1970 |
| Mcbrien | Low | Satisfactory | 12 | Other | 1880 |
| Boggs and Warren | Low | Satisfactory | 12 | Water Supply | 1922 |
| Payne | Low | Satisfactory | 12 | Water Supply | 1928 |
| Jack's Swamp Dam No. 2 | Low | Satisfactory | 12 | Water Supply | 1926 |
| Lookout | Low | Satisfactory | 11 | Other | 1930 |
| Big Dobe South | Low | Satisfactory | 11 | Water Supply | 1912 |
| Kelley and Greiner | Low | Satisfactory | 11 | Water Supply | 1923 |
| South Mountain | Low | Not assessed | 10 | Fire Protection, Stock, Or Small Fish Pond | 1980 |
| MUD Lake | Low | Satisfactory | 10 | Water Supply | 1926 |
| Bayley Reservoir | Low | Not assessed | 10 | Fire Protection, Stock, Or Small Fish Pond | 1970 |
| Everly | Low | Not assessed | 9 | Irrigation | 1980 |
| Green Springs | Low | Not assessed | 9 | Fire Protection, Stock, Or Small Fish Pond | 1975 |
| Spaulding 3 | Low | Not assessed | 9 | Fish and Wildlife Pond | 1965 |
| Big Dobe North | Low | Satisfactory | 9 | Water Supply | 1912 |
| Crowder Mtn | Low | Not assessed | 8 | Fire Protection, Stock, Or Small Fish Pond | 1977 |
| Green Tank | Low | Not assessed | 8 | Fire Protection, Stock, Or Small Fish Pond | 1975 |
| Emigrant Spring | Low | Not assessed | 8 | Fire Protection, Stock, Or Small Fish Pond | 1974 |
| Boles Meadow | Low | Not assessed | 8 | Fish and Wildlife Pond | 1986 |
| Surveyors Valley | Low | Not assessed | 8 | Fire Protection, Stock, Or Small Fish Pond | 1955 |
| Four Mile Valley N0 4 | Low | Not assessed | 8 | Fire Protection, Stock, Or Small Fish Pond | 1951 |
| Telephone Flat | Low | Not assessed | 7 | Fire Protection, Stock, Or Small Fish Pond | 1931 |
| Reservoir N | Low | Not assessed | 7 | Irrigation | 1977 |
| Dead Horse Reservoir | Low | Not assessed | 7 | Fire Protection, Stock, Or Small Fish Pond | 1931 |
| Buchanan | Low | Not assessed | 7 | Fire Protection, Stock, Or Small Fish Pond | 1890 |
| Deadhorse Flat Reservoir | Low | Not assessed | 7 | Fire Protection, Stock, Or Small Fish Pond | 1920 |
| Cummings Res No 2 | Low | Not assessed | 7 | Irrigation | 1910 |