Safest Lakes to Swim In in Oregon
13 lakes in Oregon qualify as safest for swimming, all hold grade A or B and report chlorophyll-a (algae) under 10 µg/L. Always check local advisories on the day you swim.
Ranked List
| # | Lake | County | Grade | Clarity | Phosphorus | Algae |
|---|---|---|---|---|---|---|
| 1 | Odell Lake | Klamath | A | 22.3 ft | - | 1.1 µg/L |
| 2 | Crescent Lake | Klamath | A | 42.2 ft | - | 0.7 µg/L |
| 3 | Odell Lake | Klamath | A | 18.7 ft | - | 1.3 µg/L |
| 4 | Crescent Lake | Klamath | A | 51.7 ft | - | 0.5 µg/L |
| 5 | Lava Lake | Deschutes | A | 17.6 ft | - | 7.4 µg/L |
| 6 | Wickiup Reservoir | Deschutes | A | 11.2 ft | - | 2.7 µg/L |
| 7 | Billy Chinook Reservoir | Jefferson | B | 8.4 ft | - | 2.4 µg/L |
| 8 | Crane Prairie Reservoir | Deschutes | B | 8.4 ft | - | 3.7 µg/L |
| 9 | Crane Prairie Reservoir | Deschutes | B | 12.5 ft | - | 5.1 µg/L |
| 10 | Deschutes River Arm Lake | Jefferson | B | 4.6 ft | - | 4.4 µg/L |
| 11 | Billy Chinook Reservoir | Jefferson | B | 4.4 ft | - | 1.9 µg/L |
| 12 | Phillips Lake | Baker | B | 5.9 ft | 17.5 µg/L | - |
| 13 | Wickiup Reservoir | Deschutes | B | 8.2 ft | - | 7 µg/L |