16Total Dams
1High Hazard
0Significant
Dam Safety in Grant County, Oregon
Grant County has 16 dams tracked in the National Inventory of Dams. Of these, 1 are classified as high hazard — meaning failure would probably cause loss of human life.
The average dam in Grant County is 59 years old. The most common purpose is irrigation. The tallest dam is Waller No. 3 at 71 ft.
Explore more: Oldest dams in Oregon · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Olive Lake | High | Not assessed | 39 | Recreation | 1907 |
| Waller No. 3 | Low | Not assessed | 71 | Irrigation | 1965 |
| Bull Prairie Reservoir | Low | Not assessed | 51 | Recreation | 1961 |
| Oxbow Ranch Dam (grant) | Low | Not assessed | 42 | Irrigation | 1980 |
| Officer Reservoir | Low | Not assessed | 35 | Irrigation | 1970 |
| Thomas-cavender | Low | Not assessed | 32 | Irrigation | 1985 |
| Emmel Bros. Reservoir | Low | Not assessed | 27 | Irrigation | 1984 |
| Bates Reservoir | Low | Not assessed | 26 | Recreation | 1949 |
| Yokom Reservoir | Low | Not assessed | 25 | Irrigation | 1947 |
| Rickman Reservoir | Low | Not assessed | 25 | Irrigation | |
| Sproul Reservoir | Low | Not assessed | 24 | Irrigation | 1962 |
| Buffalo Lake Dam | Low | Not assessed | 22 | Irrigation | 1963 |
| Poison Creek Dam | Low | Satisfactory | 21 | Fish and Wildlife Pond | 1999 |
| Pons Lake Reservoir | Low | Not assessed | 20 | Irrigation | 1968 |
| Prairie City Lagoon (cell 3) | Low | Not assessed | 18 | Irrigation | 1981 |
| Prairie City Lagoon (cell 2) | Low | Not assessed | 16 | Irrigation | 1981 |