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 526–550 of 856
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Hl Creek Reservoir Harney County | 10 | 1943 | Low | Not Rated |
| Hills Reservoir (Polk) Polk County | 19 | 1963 | Low | Not Rated |
| Hills Creek Dam Lane County | 341 | 1962 | High | Not Available |
| Hillsboro West (Lagoon) Washington County | 12 | 1984 | Low | Not Rated |
| Hidden Lake (Sluice Can.) Wheeler County | 36 | — | Low | Not Available |
| Hicks Canyon Dam Malheur County | 26 | 1979 | Low | Not Rated |
| Hickory Hill Farm Yamhill County | 29 | 1952 | Significant | Not Rated |
| Hickey Reservoir Lake County | 39 | 1967 | Low | Not Rated |
| Hershiser Reservoir Clackamas County | 42 | 1972 | Low | Not Rated |
| Hendrickson Polk County | 25 | 1991 | Low | Not Rated |
| Hemlock Meadows Dam Douglas County | 62 | 1962 | Low | Not Rated |
| Helms Reservoir Linn County | 27 | 1968 | Low | Not Rated |
| Heater Reservoir #2 Marion County | 28 | 1981 | Significant | Not Rated |
| Heater Dam Marion County | 28 | 1959 | Significant | Not Rated |
| Heart Lake Or Deep Lake Lake County | 12 | 1898 | Low | Not Rated |
| Headworks Diversion Dam Clackamas County | 30 | 1923 | Low | Satisfactory |
| Haystack Dam Jefferson County | 105 | 1957 | High | Not Available |
| Hay Lake Harney County | 13 | 1905 | Low | Not Rated |
| Hayhurst Road Douglas County | 30 | 1958 | High | Fair |
| Hawn Creek Reservoir Yamhill County | 25 | 1961 | Low | Not Rated |
| Hawks Nest Reservoir Malheur County | 25 | 1961 | Low | Not Rated |
| Hatfield (Spaulding) Washington County | 33 | 1955 | Low | Not Rated |
| Haskins Creek Dam Yamhill County | 85 | 1930 | Significant | Not Rated |
| Haskell Reservoir Baker County | 15 | 1912 | Low | Not Rated |
| Hartwick Reservoir Washington County | 30 | 1956 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.