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 376–400 of 535
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Reimer, William Reservoir Polk County | 22 | 1958 | Low | Not Rated |
| Remembrance Lake Clackamas County | 19 | — | Low | Not Rated |
| Renner Dam Lake County | 48 | 1961 | Low | Not Rated |
| Rickman Reservoir Grant County | 25 | — | Low | Not Rated |
| Rickreall Dairy Lagoon Polk County | 12 | 1989 | Low | Not Rated |
| Riley Horn Dam Malheur County | 12 | 1961 | Low | Not Rated |
| Rimrock Lake Harney County | 13 | 1905 | Low | Not Rated |
| Rincon Ranch Reservoir Harney County | 20 | — | Low | Not Rated |
| Ritchey Farm Reservoir Washington County | 12 | 1985 | Low | Not Rated |
| Ritter (Large) Klamath County | 35 | 1903 | Low | Not Rated |
| Riverbend Landfill Lagoon Yamhill County | 27 | — | Low | Not Rated |
| River Bend No. 2 Marion County | 30 | 1967 | Low | Not Rated |
| Rivers End Dam Lake County | 23 | 1997 | Low | Not Rated |
| Rock Creek Hatchery Douglas County | 14 | — | Low | Not Rated |
| Rock Creek Lake (Wheeler) Wheeler County | 48 | 1954 | Low | Not Rated |
| Rock Creek-Upper (Harney) Harney County | 47 | 1970 | Low | Not Rated |
| Rock House Reservoir (Malheur) Malheur County | 22 | 1956 | Low | Not Rated |
| Rock Lake Baker County | 28 | 1928 | Low | Not Rated |
| Rock Quarry Canyon Dam Harney County | 29 | 1948 | Low | Not Rated |
| Rohde Reservoir Polk County | 19 | 1967 | Low | Not Rated |
| Round Barn Reservoir Harney County | 12 | 1943 | Low | Not Rated |
| Round Valley Klamath County | 12 | 1956 | Low | Not Rated |
| Roy Farm Washington County | 14 | 1989 | Low | Not Rated |
| Ruckmans Reservoir Union County | 20 | 1963 | Low | Not Rated |
| Ruddenklau Dam Yamhill County | 18 | 2006 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.