Cleanest Lakes in Delaware County, Oklahoma
Grand Lake in Delaware County leads the rankings with a water quality grade of F and 1.6 ft of clarity. Below are the top 1 cleanest monitored lakes in Delaware County, Oklahoma, ranked by EPA water quality score.
Ranked List
| # | Lake | County | Grade | Clarity | Phosphorus | Algae |
|---|---|---|---|---|---|---|
| 1 | Grand Lake | Delaware | F | 1.6 ft | 760 µg/L | 384000 µg/L |