Cleanest Lakes in Jefferson County, Oregon
Billy Chinook Reservoir in Jefferson County leads the rankings with a water quality grade of C and 4.4 ft of clarity. Below are the top 18 cleanest monitored lakes in Jefferson County, Oregon, ranked by EPA water quality score.
Ranked List
| # | Lake | County | Grade | Clarity | Phosphorus | Algae |
|---|---|---|---|---|---|---|
| 1 | Billy Chinook Reservoir | Jefferson | C | 4.4 ft | 70 µg/L | 2.2 µg/L |
| 2 | Deschutes River Arm Lake | Jefferson | D | 4.6 ft | 60 µg/L | 4.4 µg/L |
| 3 | Round Butte Dam Forebay Lake | Jefferson | D | 5.6 ft | 40 µg/L | 4.6 µg/L |
| 4 | Currant Creek Reservoir | Jefferson | NR | - | - | - |
| 5 | Pelton Regulating Reservoir | Jefferson | NR | - | - | - |
| 6 | Lake Simtustus | Jefferson | NR | - | - | - |
| 7 | Boulder Lake | Jefferson | NR | - | - | - |
| 8 | Trout Lake | Jefferson | NR | - | - | - |
| 9 | Island Lake | Jefferson | NR | - | - | - |
| 10 | Long Lake | Jefferson | NR | - | - | - |
| 11 | Monon Lake | Jefferson | NR | - | - | - |
| 12 | Harvey Lake | Jefferson | NR | - | - | - |
| 13 | Olallie Lake | Jefferson | NR | - | - | - |
| 14 | Suttle Lake | Jefferson | NR | - | - | - |
| 15 | Blue Lake | Jefferson | NR | - | - | - |
| 16 | Square Lake | Jefferson | NR | - | - | - |
| 17 | Brewer Reservoir | Jefferson | NR | - | - | - |
| 18 | Little Willow Creek Reservoir | Jefferson | NR | - | - | - |
More Answers for Jefferson County, Oregon
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