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 401–425 of 535
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Echo Lake Reservoir Union County | 10 | 1922 | Low | Not Rated |
| Echave Reservoir (Malheur) Malheur County | 35 | 1954 | Low | Not Rated |
| East Lakes Creek Baker County | 26 | 1963 | Low | Not Rated |
| Easterday Reservoir Malheur County | 16 | 1948 | Low | Not Rated |
| East Basin, Cell 1 and 2 Lane County | 16 | 1954 | Low | Not Rated |
| Eagle Lake Dam Union County | 33 | 1920 | Low | Not Rated |
| Dusky Marsh Dam Polk County | 10 | 1998 | Low | Poor |
| Dundee Sewer Project (Lagoon) Yamhill County | 37 | 1979 | Low | Not Rated |
| Duncan Reservoir - Dam Lake County | 25 | 1973 | Low | Not Rated |
| Duck Pond Dam Marion County | 35 | 2001 | Low | Not Rated |
| Dry Creek Diversion Dam Lake County | 13 | 1974 | Low | Not Rated |
| Dry Creek (Catlow Valley) Harney County | 12 | 1960 | Low | Not Rated |
| Dragonfly Reservoir Yamhill County | 28 | 2006 | Low | Not Rated |
| Dowell Reservoir Malheur County | 17 | 1989 | Low | Not Rated |
| Dog River North Wasco County | 32 | — | Low | Not Rated |
| Dog Hollow Klamath County | 17 | 1959 | Low | Not Rated |
| Ditch Creek Reservoir Jackson County | 26 | — | Low | Not Rated |
| Dickson Reservoir Malheur County | 48 | 1949 | Low | Not Rated |
| Diack Reservoir Multnomah County | 26 | 1955 | Low | Not Rated |
| Devils Lake (Klamath) Klamath County | 16 | 1956 | Low | Not Rated |
| Desert Meadows Reservoir Dam Harney County | 11 | 1913 | Low | Unsatisfactory |
| Desert Creek Dam Crook County | 46 | — | Low | Not Rated |
| Deraeve Reservoir #2 Polk County | 22 | 1987 | Low | Not Rated |
| Denley Brothers Dam Douglas County | 23 | 1960 | Low | Not Rated |
| Delintment Lake Harney County | 21 | 1953 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.