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 101–125 of 166
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Moon Reservoir Harney County | 38 | 1969 | Significant | Not Rated |
| Moores Hollow Malheur County | 35 | 1964 | Significant | Not Available |
| Mt. Hood Community College Dam Multnomah County | 58 | 1968 | Significant | Not Rated |
| Mt. Springs Ranch Dam Polk County | 42 | 1969 | Significant | Not Rated |
| Muddy Creek Reservoir Lake County | 26 | 1962 | Significant | Not Rated |
| Muhs Quarry Dam Yamhill County | 40 | — | Significant | Not Rated |
| Neil Creek Reservoir Marion County | 39 | 1955 | Significant | Not Rated |
| North Fork Diversion Dam Jackson County | 50 | 1965 | Significant | Not Rated |
| Olson Flashboard Dam Yamhill County | 16 | 1975 | Significant | Not Rated |
| Olson Reservoir (Mark) Polk County | 25 | 1988 | Significant | Not Rated |
| Oswego Lake Dam Clackamas County | 34 | 1921 | Significant | Not Rated |
| Panther Creek Reservoir Yamhill County | 51 | 1971 | Significant | Not Rated |
| Parsnip Creek Diversion Malheur County | 42 | 1980 | Significant | Not Rated |
| Paul Chobin Dam Washington County | 16 | — | Significant | Not Rated |
| Peterson, Floyd Marion County | 27 | 1977 | Significant | Not Rated |
| Pettit Reservoir Marion County | 26 | 1963 | Significant | Not Rated |
| Peyralans Reservoir Multnomah County | 23 | — | Significant | Not Rated |
| Powers Log Pond Coos County | 15 | 1955 | Significant | Not Rated |
| Prospect Forebay Dam Jackson County | 31 | 1911 | Significant | Satisfactory |
| Rainier City Reservoir Columbia County | 25 | 1954 | Significant | Not Rated |
| Rink Creek Reservoir Coos County | 55 | 1939 | Significant | Not Rated |
| Rogers - Joseph Reservoir Clackamas County | 31 | 1971 | Significant | Not Rated |
| Rose Reservoir Clackamas County | 40 | 1974 | Significant | Not Rated |
| Salmonberry Reservoir Columbia County | 35 | 1960 | Significant | Not Rated |
| Salmon Creek Reservoir Baker County | 41 | 1984 | Significant | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.