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 851–856 of 856
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Yoncalla Reservoir Douglas County | 16 | 1983 | Low | Not Rated |
| Younglife Waste A (Lower) Wasco County | 41 | 1986 | High | Satisfactory |
| Younglife Waste B (Middle) Wasco County | 15 | — | High | Satisfactory |
| Younglife Waste C (Upper) Wasco County | 15 | — | High | Satisfactory |
| Zielinski Farm Reservoir Clackamas County | 26 | 1974 | Significant | Not Rated |
| Zoglmann Reservoir Harney County | 28 | 1963 | Low | Not Rated |
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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.