Dams in Jefferson County, Oregon
16Total Dams
5High Hazard
4Significant
Dam Safety in Jefferson County, Oregon
Jefferson County has 16 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 4 carry a significant hazard classification. Currently, 1 dams have a condition assessment of poor or unsatisfactory.
The average dam in Jefferson County is 65 years old. The most common purpose is irrigation. The tallest dam is Round Butte at 440 ft.
Explore more: Oldest dams in Oregon · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Round Butte | High | Fair | 440 | Hydroelectric | 1964 |
| Pelton | High | Satisfactory | 204 | Hydroelectric | 1957 |
| Haystack Dam | High | Not Available | 105 | Irrigation | 1957 |
| Pelton Regulating | High | Satisfactory | 40 | Other | 1958 |
| Mays | High | Poor | 38 | Irrigation | 1960 |
| Brewer Reservoir (jefferson) | Significant | Not Rated | 32 | Irrigation | 1952 |
| Fuston Ranch Dam | Significant | Not Rated | 30 | Hydroelectric | |
| Gillworth Reservoir | Significant | Not Rated | 29 | Irrigation | 1980 |
| Suttle | Significant | Not Rated | 6 | Fish and Wildlife Pond | 1961 |
| Cherry Creek | Low | Not Rated | 45 | Irrigation | 1980 |
| Little Willow Creek Reservoir | Low | Not Rated | 43 | Irrigation | 1954 |
| Madras Wwt Lagoon | Low | Not Rated | 25 | Irrigation | |
| Morrow Brothers (jefferson) | Low | Not Rated | 25 | Irrigation | 1970 |
| Opal Springs | Low | Satisfactory | 21 | Hydroelectric | 1985 |
| Lyle Reservoir | Low | Not Rated | 15 | Irrigation | 1911 |
| Metolius (lagoon) | Low | Not Rated | 13 |