42Total Dams
2High Hazard
8Significant
Dam Safety in Polk County, Oregon
Polk County has 42 dams tracked in the National Inventory of Dams. Of these, 2 are classified as high hazard — meaning failure would probably cause loss of human life. Another 8 carry a significant hazard classification. Currently, 5 dams have a condition assessment of poor or unsatisfactory.
The average dam in Polk County is 46 years old. The most common purpose is irrigation. The tallest dam is Mercer at 81 ft.
Explore more: Oldest dams in Oregon · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Mercer | High | Poor | 81 | Water Supply | 1961 |
| Croft | High | Satisfactory | 45 | Irrigation | 1968 |
| Mt. Springs Ranch Dam | Significant | Not assessed | 42 | Irrigation | 1969 |
| Kennel Reservoir | Significant | Not assessed | 27 | Irrigation | 1977 |
| Olson Reservoir (mark) | Significant | Not assessed | 25 | Irrigation | 1988 |
| Koning "e" Reservoir | Significant | Not assessed | 24 | Irrigation | 1995 |
| Fern Creek | Significant | Not assessed | 21 | 2019 | |
| Eola Hills Reservoir | Significant | Not assessed | 19 | Irrigation | 1985 |
| Deraeve Reservoir #1 (lower) | Significant | Not assessed | 18 | Irrigation | 1978 |
| Shaffer Reservoir | Significant | Not assessed | 16 | Irrigation | 1987 |
| Dejong, the Reservoir | Low | Not assessed | 39 | Irrigation | 1961 |
| Maple Grove | Low | Not assessed | 38 | Irrigation | 1995 |
| Johan Vineyard Reservoir H | Low | Not assessed | 35 | Hydroelectric | |
| Morgan Brothers Dam | Low | Poor | 35 | Fish and Wildlife Pond | 1962 |
| Marx Brothers Reservoir | Low | Not assessed | 32 | Irrigation | 1977 |
| Marx Reservoir #1 | Low | Not assessed | 30 | Irrigation | 1964 |
| Gehring Reservoir (towery Dam) | Low | Not assessed | 30 | Irrigation | 1959 |
| Davison, Dale | Low | Not assessed | 28 | Irrigation | 1971 |
| Hendrickson | Low | Not assessed | 25 | Recreation | 1991 |
| Crowe Reservoir #2 (polk) | Low | Not assessed | 24 | Irrigation | 1971 |
| Koning "f" Reservoir | Low | Not assessed | 23 | Irrigation | 1995 |
| Kreder Reservoir | Low | Not assessed | 22 | Irrigation | 1970 |
| Reimer, William Reservoir | Low | Not assessed | 22 | Irrigation | 1958 |
| Deraeve Reservoir #2 | Low | Not assessed | 22 | Irrigation | 1987 |
| Stewart Reservoir (polk) | Low | Not assessed | 21 | Irrigation | |
| Iott Dam | Low | Not assessed | 20 | Water Supply | |
| Turner Dam | Low | Not assessed | 19 | Water Supply | |
| Rohde Reservoir | Low | Not assessed | 19 | Irrigation | 1967 |
| Hills Reservoir (polk) | Low | Not assessed | 19 | Irrigation | 1963 |
| Abe Ediger Reservoir | Low | Not assessed | 18 | Irrigation | 1957 |
| Scharf Reservoir #2 | Low | Not assessed | 15 | Other | |
| Walker Reservoir 2 | Low | Not assessed | 12 | Irrigation | 1977 |
| Rickreall Dairy Lagoon | Low | Not assessed | 12 | Other | 1989 |
| Wallace Ingebrand | Low | Not assessed | 11 | Irrigation | 1979 |
| Martin Bros. Flashboard Dam | Low | Not assessed | 11 | Irrigation | 1973 |
| Cackler Marsh Dam | Low | Fair | 11 | Fish and Wildlife Pond | 1995 |
| Mulkey, Gryland Reservoir | Low | Not assessed | 10 | Irrigation | 1981 |
| Moffitti Marsh Dam | Low | Fair | 10 | Fish and Wildlife Pond | 1995 |
| Parvipes Marsh Dam | Low | Poor | 10 | Fish and Wildlife Pond | 1995 |
| Lillie Walker Irrigation Pond Dam | Low | Not assessed | 10 | Irrigation | 1969 |
| Dusky Marsh Dam | Low | Poor | 10 | Fish and Wildlife Pond | 1998 |
| Taverner Marsh Dam | Low | Poor | 9 | Fish and Wildlife Pond | 1998 |