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