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 26–32 of 32
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Twin Springs Dam Harney County | 27 | 1982 | Low | Poor |
| Wageman Douglas County | 42 | 1971 | High | Poor |
| Walch Dam Jackson County | 68 | 1954 | High | Poor |
| Wallowa Lake Wallowa County | 40 | 1931 | High | Poor |
| Walterville Forebay Lane County | 24 | 1911 | High | Poor |
| Willow-Skull Dam Harney County | 21 | 1970 | Low | Poor |
| Winchester Douglas County | 17 | 1904 | High | Poor |
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Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.