Cleanest Lakes in Oregon
Odell Lake in Klamath County leads the rankings with a water quality grade of C and 22.3 ft of clarity. Below are the top 14 cleanest monitored lakes in Oregon, ranked by EPA water quality score.
Ranked List
| # | Lake | County | Grade | Clarity | Phosphorus | Algae |
|---|---|---|---|---|---|---|
| 1 | Odell Lake | Klamath | C | 22.3 ft | 30 µg/L | 1.1 µg/L |
| 2 | Billy Chinook Reservoir | Jefferson | C | 4.4 ft | 70 µg/L | 2.2 µg/L |
| 3 | Bully Creek Lake | Malheur | D | 4.9 ft | 128 µg/L | 15 µg/L |
| 4 | Deschutes River Arm Lake | Jefferson | D | 4.6 ft | 60 µg/L | 4.4 µg/L |
| 5 | Round Butte Dam Forebay Lake | Jefferson | D | 5.6 ft | 40 µg/L | 4.6 µg/L |
| 6 | Fremont Bridge Lake | Klamath | D | - | 200 µg/L | - |
| 7 | Crane Prairie Reservoir | Deschutes | D | - | 40 µg/L | 6 µg/L |
| 8 | Williamson River Outlet Lake | Klamath | F | - | 165 µg/L | 67.9 µg/L |
| 9 | Malheur Lake | Harney | F | - | 460.5 µg/L | 45.5 µg/L |
| 10 | Mid-Trench Lake | Klamath | F | - | 240 µg/L | 80.6 µg/L |
| 11 | Agency Lake South | Klamath | F | - | 110 µg/L | 61.6 µg/L |
| 12 | Shoalwater Bay Lake | Klamath | F | - | 215 µg/L | 143.5 µg/L |
| 13 | Rattlesnake Point Lake | Klamath | F | - | 185 µg/L | 124.5 µg/L |
| 14 | Mid-North Lake | Klamath | F | - | 180 µg/L | 81.1 µg/L |
More Answers for Oregon
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