Oregon Dams
856 dams tracked by the National Inventory of Dams
Total Dams
856
High Hazard
155
18.1%
Poor / Unsatisfactory
47
Average Age
67 yrs
Hazard Classification
High155 (18.1%)
Significant166 (19.4%)
Low535 (62.5%)
Condition Assessment
Satisfactory62 (7.2%)
Fair39 (4.6%)
Poor / Unsatisfactory47 (5.5%)
Not Rated708 (82.7%)
Federal
122
State
14
Local
94
Private
603
Tallest Dams
- Cougar Dam519 ft
- Detroit Dam463 ft
- Round Butte440 ft
- Owyhee Dam417 ft
- Brownlee395 ft
High Hazard Dams
- Cougar DamHigh
- Detroit DamHigh
- Round ButteHigh
- Owyhee DamHigh
- BrownleeHigh
Poor Condition Dams
- SmithUnsatisfactory
- Hosler (Reeder GulchUnsatisfactory
- Willow Creek 3 (Malheur)Unsatisfactory
- Clear BranchUnsatisfactory
- Bear CreekPoor
All Dams in Oregon
Showing 351–375 of 856
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Iverson Reservoir (Douglas) Douglas County | 36 | 1960 | Low | Not Rated |
| Jaca Dam Malheur County | 34 | — | Low | Not Rated |
| Jackson Farms Dam Coos County | 60 | 1998 | Significant | Not Rated |
| Jacobs Reservoir Dam Lake County | 15 | 1938 | Low | Poor |
| Jensen (Yamhill Farm) Yamhill County | 24 | 2017 | Significant | Not Rated |
| Jesse Enlargement Washington County | 32 | 1998 | Significant | Not Rated |
| Jimmy Creek Reservoir Union County | 42 | 1981 | Significant | Not Rated |
| Joe Fisher Crook County | 54 | 1953 | High | Satisfactory |
| Johan Vineyard Reservoir H Polk County | 35 | — | Low | Not Rated |
| John Day Lock and Dam Klickitat County | 230 | 1968 | High | Not Available |
| John F Wood Washington County | 28 | 1971 | Low | Not Available |
| Johnson Creek (Crook) Crook County | 44 | 1951 | High | Fair |
| Johnson Log Sorting Pond Coos County | 13 | 1951 | Low | Not Rated |
| John Vanden Brink Dairy Morrow County | 10 | — | Low | Not Rated |
| Jones Reservoir Harney County | 21 | 1958 | Low | Not Rated |
| Jubilee Lake Union County | 50 | 1967 | High | Poor |
| Justesen Reservoir #1 Sherman County | 21 | 1985 | Low | Not Rated |
| Katz Farm Yamhill County | 20 | 1994 | Significant | Not Rated |
| Kauer Reservoir Yamhill County | 38 | 1968 | Low | Not Rated |
| Kay Lake Washington County | 38 | 1963 | High | Satisfactory |
| Keene Creek Dam Jackson County | 78 | 1959 | High | Not Available |
| Keene Reservoir Yamhill County | 20 | 1957 | Low | Not Rated |
| Kelly Creek Regional Detention Pond Multnomah County | 20 | — | Low | Not Rated |
| Kennel Reservoir Polk County | 27 | 1977 | Significant | Not Rated |
| Keno Dam Klamath County | 41 | 1967 | High | Not Available |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.