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 326–350 of 856
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Hicks Canyon Dam Malheur County | 26 | 1979 | Low | Not Rated |
| Hidden Lake (Sluice Can.) Wheeler County | 36 | — | Low | Not Available |
| Hillsboro West (Lagoon) Washington County | 12 | 1984 | Low | Not Rated |
| Hills Creek Dam Lane County | 341 | 1962 | High | Not Available |
| Hills Reservoir (Polk) Polk County | 19 | 1963 | Low | Not Rated |
| Hl Creek Reservoir Harney County | 10 | 1943 | Low | Not Rated |
| Hochstein Dam #3 Washington County | 45 | — | Low | Not Rated |
| Hoefer-Pierson Reservoir Washington County | 23 | 1970 | Significant | Not Rated |
| Holbrook Reservoir Lake County | 25 | 1930 | Low | Not Rated |
| Hoover Pond 1 Jackson County | 17 | 1962 | Significant | Not Rated |
| Hoover Pond 2 Jackson County | 28 | 1962 | Significant | Not Rated |
| Hoover Pond 3 Jackson County | 14 | 1962 | Significant | Not Rated |
| Hope Reservoir Malheur County | 19 | — | Low | Not Rated |
| Hosler (Reeder Gulch Jackson County | 114 | 1928 | High | Unsatisfactory |
| Howard Prairie Dam Jackson County | 100 | 1958 | High | Not Available |
| Howell Union County | 18 | 1980 | Low | Not Rated |
| Hult Pond Dam Lane County | 37 | 1950 | High | Satisfactory |
| Hunter Reservoir (Harney) Harney County | 40 | 1968 | Significant | Not Rated |
| Hyatt Dam Jackson County | 53 | 1923 | High | Not Available |
| Hyde Lake Dam Klamath County | 33 | 1973 | Low | Not Rated |
| Indian Lake Umatilla County | 56 | 1969 | High | Fair |
| Iott Dam Polk County | 20 | — | Low | Not Rated |
| Isakson Reservoir Clackamas County | 30 | 1972 | Low | Not Rated |
| Iseli Nursery 4 Clackamas County | 20 | 1989 | Low | Not Rated |
| Iverson (Clackamas) Clackamas County | 15 | 1994 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.