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 826–850 of 856
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Willards Pool Marion County | 40 | 1949 | Low | Not Rated |
| William L. Jess Dam Jackson County | 345 | 1976 | High | Not Available |
| Williams-Sherman Reservoir Harney County | 25 | 1919 | Low | Not Rated |
| Willow Butte Harney County | 25 | 2004 | Low | Fair |
| Willow Creek Jackson County | 59 | 1953 | High | Satisfactory |
| Willow Creek 3 (Malheur) Malheur County | 110 | 1944 | High | Unsatisfactory |
| Willow Creek Dam Morrow County | 160 | 1982 | High | Not Available |
| Willow Creek Reservoir (Lake) Lake County | 23 | 1959 | Low | Not Rated |
| Willow-Skull Dam Harney County | 21 | 1970 | Low | Poor |
| Willow Valley Reservoir Klamath County | 34 | 1961 | Low | Not Rated |
| Wilson Lake Dam (Klamath) Klamath County | 16 | 1966 | Low | Not Rated |
| Wilson Reservoir No. 1 Sherman County | 35 | 1957 | Low | Not Rated |
| Winchester Douglas County | 17 | 1904 | High | Poor |
| Windhurst Coos County | 43 | — | Significant | Not Rated |
| Wineland Wheeler County | 10 | — | Low | Not Rated |
| Wirth Reservoir Baker County | 38 | 1966 | Low | Not Rated |
| Withers Dam Lake County | 20 | 1911 | Low | Not Rated |
| Wolf Creek Union County | 128 | 1974 | High | Satisfactory |
| Woodburn Nursery Marion County | 33 | — | Low | Not Rated |
| Woodrat Knob Jackson County | 92 | 1960 | High | Unsatisfactory |
| Woolfolk Reservoir Jackson County | 49 | 1955 | Significant | Not Rated |
| Worden Reservoir 2 Klamath County | 45 | 1962 | Low | Not Rated |
| Yamhill Vista Dam #5 Yamhill County | 27 | — | Significant | Not Rated |
| Yankee Jackson County | 61 | 1951 | High | Fair |
| Yokom Reservoir Grant County | 25 | 1947 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.