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 801–825 of 856
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Walters, Glenn #5 Washington County | 29 | 1984 | Significant | Not Rated |
| Walterville Forebay Lane County | 24 | 1911 | High | Poor |
| Walterville Storage Pond Lane County | 10 | 1951 | High | Satisfactory |
| Walton Lake Dam Crook County | 34 | 1955 | Significant | Not Rated |
| Wampler-Werth Crook County | 20 | 1983 | Significant | Not Rated |
| Warm Springs Dam Malheur County | 106 | 1919 | High | Not Available |
| Wasco Dam Wasco County | 59 | 1959 | High | Not Available |
| Wastewater Lagoon #4 Lake County | 15 | — | Low | Not Rated |
| Watson Reservoir Crook County | 34 | 1970 | Low | Not Rated |
| Weaver Reservoir Douglas County | 22 | 1970 | Low | Not Rated |
| Welch Reservoir (Widman #2) Baker County | 12 | 1890 | Low | Not Rated |
| Werner (Upper) Josephine County | 28 | 1973 | Low | Not Rated |
| Westbrook Dam Marion County | 25 | — | Low | Not Rated |
| Weston Eda Wwt Lagoon Umatilla County | 19 | 1986 | Low | Not Rated |
| Wheaton Creek Reservoir Malheur County | 17 | 1948 | Low | Not Rated |
| Whispering Winds Benton County | 26 | 1973 | Low | Not Rated |
| Whistlers Bend Douglas County | 35 | 1960 | Low | Not Rated |
| Whited Reservoir (Baker) Baker County | 47 | 1921 | Significant | Not Rated |
| White Line Reservoir Klamath County | 23 | 1959 | Low | Not Rated |
| White Rock Reservoir Lake County | 31 | 1974 | Low | Not Rated |
| Whitmore Klamath County | 24 | — | Low | Not Rated |
| Wickiup Dam Deschutes County | 100 | 1949 | High | Not Available |
| Wickiup Lake (Astoria) Clatsop County | 30 | 1940 | High | Fair |
| Widman Reservoir Baker County | 33 | 1952 | Low | Not Rated |
| Willamette Falls Locks Clackamas County | 37 | 1873 | High | Not Available |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.