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 201–225 of 856
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Sevan Lake Lake County | 45 | 1977 | Low | Not Rated |
| Sester, William H. Reservoir 1 Multnomah County | 38 | 1969 | Significant | Not Rated |
| Seaside City Clatsop County | 45 | 1996 | High | Satisfactory |
| Scott Dam Malheur County | 18 | 1911 | Low | Not Rated |
| Scoggins Dam Washington County | 151 | 1975 | High | Not Available |
| Schwartz Reservoir Lane County | 20 | 1958 | Significant | Not Rated |
| Schmidt, Howard Reservoir Washington County | 38 | 1969 | Low | Not Rated |
| Schmadeke Washington County | 18 | 1971 | Low | Not Rated |
| Scharf Reservoir #2 Polk County | 15 | — | Low | Not Rated |
| Schaefer, Ray Reservoir Clackamas County | 25 | 1965 | Low | Not Rated |
| Sawmill Gulch Reservoir Baker County | 30 | 1916 | Low | Not Rated |
| Sarvis Crook County | 38 | 1970 | Significant | Not Rated |
| Santa Clara Lane County | 17 | 1976 | High | Satisfactory |
| Sandy Farms No. 1-A Clackamas County | 33 | 1977 | Significant | Not Rated |
| Sand Dunes Wastewater Lagoon Dam Morrow County | 35 | — | Significant | Not Rated |
| Sams Valley Jackson County | 61 | 1956 | High | Fair |
| Salt Lick Reservoir Malheur County | 23 | 1933 | Low | Not Rated |
| Salmon Creek Reservoir Baker County | 41 | 1984 | Significant | Not Rated |
| Salmonberry Reservoir Columbia County | 35 | 1960 | Significant | Not Rated |
| Ruddenklau Dam Yamhill County | 18 | 2006 | Low | Not Rated |
| Ruckmans Reservoir Union County | 20 | 1963 | Low | Not Rated |
| Roy Farm Washington County | 14 | 1989 | Low | Not Rated |
| Round Valley Klamath County | 12 | 1956 | Low | Not Rated |
| Round Butte Jefferson County | 440 | 1964 | High | Fair |
| Round Barn Reservoir Harney County | 12 | 1943 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.