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 26–39 of 39
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Rock Creek Dam Malheur County | 17 | 1939 | High | Fair |
| Rock Creek (Wasco) Wasco County | 51 | 1947 | High | Fair |
| Round Butte Jefferson County | 440 | 1964 | High | Fair |
| Sams Valley Jackson County | 61 | 1956 | High | Fair |
| Silver Creek Marion County | 65 | 1975 | High | Fair |
| Soda Springs Douglas County | 127 | 1952 | High | Fair |
| Strong Josephine County | 48 | 1926 | High | Fair |
| Twin Springs Dam Malheur County | 26 | 2004 | Low | Fair |
| Van Raden Multnomah County | 27 | 1975 | High | Fair |
| Wade Jackson County | 85 | 1963 | High | Fair |
| Walls Lake Dam Harney County | 16 | 2004 | Low | Fair |
| Wickiup Lake (Astoria) Clatsop County | 30 | 1940 | High | Fair |
| Willow Butte Harney County | 25 | 2004 | Low | Fair |
| Yankee Jackson County | 61 | 1951 | High | Fair |
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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.