Safest Lakes to Swim In in Oklahoma
4 lakes in Oklahoma 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 | Nla Lake | Grady | B | 8.9 ft | 17.8 µg/L | 3.4 µg/L |
| 2 | Nla Lake | Logan | B | 2.8 ft | 42 µg/L | 6.4 µg/L |
| 3 | Nla Lake | Osage | B | 4.8 ft | 30.7 µg/L | 6.5 µg/L |
| 4 | Nla Lake | Comanche | B | 5.7 ft | 27.2 µg/L | 3.9 µg/L |