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 1–25 of 155
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Younglife Waste C (Upper) Wasco County | 15 | — | High | Satisfactory |
| Younglife Waste B (Middle) Wasco County | 15 | — | High | Satisfactory |
| Younglife Waste A (Lower) Wasco County | 41 | 1986 | High | Satisfactory |
| Yankee Jackson County | 61 | 1951 | High | Fair |
| Woodrat Knob Jackson County | 92 | 1960 | High | Unsatisfactory |
| Wolf Creek Union County | 128 | 1974 | High | Satisfactory |
| Winchester Douglas County | 17 | 1904 | High | Poor |
| Willow Creek Dam Morrow County | 160 | 1982 | High | Not Available |
| Willow Creek 3 (Malheur) Malheur County | 110 | 1944 | High | Unsatisfactory |
| Willow Creek Jackson County | 59 | 1953 | High | Satisfactory |
| William L. Jess Dam Jackson County | 345 | 1976 | High | Not Available |
| Willamette Falls Locks Clackamas County | 37 | 1873 | High | Not Available |
| Wickiup Lake (Astoria) Clatsop County | 30 | 1940 | High | Fair |
| Wickiup Dam Deschutes County | 100 | 1949 | High | Not Available |
| Wasco Dam Wasco County | 59 | 1959 | High | Not Available |
| Warm Springs Dam Malheur County | 106 | 1919 | High | Not Available |
| Walterville Storage Pond Lane County | 10 | 1951 | High | Satisfactory |
| Walterville Forebay Lane County | 24 | 1911 | High | Poor |
| Wallowa Lake Wallowa County | 40 | 1931 | High | Poor |
| Walch Dam Jackson County | 68 | 1954 | High | Poor |
| Wageman Douglas County | 42 | 1971 | High | Poor |
| Wade Jackson County | 85 | 1963 | High | Fair |
| Van Raden Multnomah County | 27 | 1975 | High | Fair |
| Updegrave Douglas County | 35 | 1957 | High | Satisfactory |
| Unity Dam Baker County | 82 | 1938 | High | Not Available |
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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.