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 26–50 of 62
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Lebanon Dam Linn County | 9 | 1925 | Low | Satisfactory |
| Lemolo No. 1 Forebay Douglas County | 25 | 2009 | Low | Satisfactory |
| Lemolo No 2 Forebay Douglas County | 30 | 1956 | Low | Satisfactory |
| Mcguire Yamhill County | 111 | 2003 | High | Satisfactory |
| Mompano Clackamas County | 44 | 1971 | High | Satisfactory |
| North Fork Clackamas County | 207 | 1958 | High | Satisfactory |
| Opal Springs Jefferson County | 21 | 1985 | Low | Satisfactory |
| Oscar Dam Harney County | 12 | 1975 | Low | Satisfactory |
| Pelton Jefferson County | 204 | 1957 | High | Satisfactory |
| Pelton Regulating Jefferson County | 40 | 1958 | High | Satisfactory |
| Pilcher Creek Union County | 110 | 1984 | High | Satisfactory |
| Pine Hollow Wasco County | 66 | 1969 | High | Satisfactory |
| Plat I Douglas County | 30 | 1967 | High | Satisfactory |
| Poison Creek Dam Grant County | 21 | 1999 | Low | Satisfactory |
| Pony Creek - Upper Coos County | 77 | 2001 | High | Satisfactory |
| Portland #1 (Mt.Tabor) Multnomah County | 38 | 1894 | High | Satisfactory |
| Portland #3 (Washington Park) Multnomah County | 53 | 1894 | High | Satisfactory |
| Portland #5 (Mt.Tabor) Multnomah County | 55 | 1911 | High | Satisfactory |
| Portland #6 (Mt.Tabor) Multnomah County | 28 | 1911 | High | Satisfactory |
| Prospect Forebay Dam Jackson County | 31 | 1911 | Significant | Satisfactory |
| River Mill Clackamas County | 85 | 1911 | High | Satisfactory |
| Santa Clara Lane County | 17 | 1976 | High | Satisfactory |
| Seaside City Clatsop County | 45 | 1996 | High | Satisfactory |
| Slide Creek Douglas County | 30 | 1951 | Low | Satisfactory |
| South Fork Diversion Dam Jackson County | 33 | 1932 | Low | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.