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 176–200 of 856
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Deraeve Reservoir #1 (Lower) Polk County | 18 | 1978 | Significant | Not Rated |
| Deraeve Reservoir #2 Polk County | 22 | 1987 | Low | Not Rated |
| Desert Creek Dam Crook County | 46 | — | Low | Not Rated |
| Desert Meadows Reservoir Dam Harney County | 11 | 1913 | Low | Unsatisfactory |
| Detroit Dam Linn County | 463 | 1953 | High | Not Available |
| Development No. 1 Dam Multnomah County | 200 | 1929 | High | Fair |
| Development No. 2 Dam Clackamas County | 145 | 1962 | High | Satisfactory |
| Devils Lake (Klamath) Klamath County | 16 | 1956 | Low | Not Rated |
| Dexter Dam Lane County | 117 | 1955 | High | Not Available |
| Diack Reservoir Multnomah County | 26 | 1955 | Low | Not Rated |
| Dick Dam Crook County | 30 | 1950 | Significant | Not Rated |
| Dickson Reservoir Malheur County | 48 | 1949 | Low | Not Rated |
| Dierickx Washington County | 21 | 1980 | Significant | Not Rated |
| Dillard Lumber CO Dike Douglas County | 15 | 1946 | Significant | Not Rated |
| Ditch Creek Reservoir Jackson County | 26 | — | Low | Not Rated |
| Dixonville Log Pond Douglas County | 30 | 1956 | Significant | Not Rated |
| Dober Reservoir Washington County | 24 | 1954 | Significant | Not Rated |
| Dog Hollow Klamath County | 17 | 1959 | Low | Not Rated |
| Dog River North Wasco County | 32 | — | Low | Not Rated |
| Dollar Mill Pond Douglas County | 11 | 1951 | Significant | Not Rated |
| Dorena Dam Lane County | 154 | 1949 | High | Not Available |
| Dowell Reservoir Malheur County | 17 | 1989 | Low | Not Rated |
| Dragonfly Reservoir Yamhill County | 28 | 2006 | Low | Not Rated |
| Drain Plywood Log Pond Douglas County | 14 | 1956 | Significant | Not Rated |
| Drain Sewage Lagoon Douglas County | 17 | 1986 | Significant | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.