Kay County Lake Quality
Oklahoma, 9 lakes, average grade D (Poor)
Only 9 lakes in Kay County carry an active grade. The county-level summary is therefore representative of those specific lakes, not necessarily of every water body in the county. The county-wide average grade is D — water quality issues are persistent across most of the monitored basins. 2 lakes fall into the F bracket outright.
Most of the county's monitored lakes are shallow — under 50 feet — which means wind keeps the water column mixed all summer and sediment-bound phosphorus releases back into the surface layer whenever the bottom is disturbed. Washunga Bay Lake (D) is the cleanest in the county.
Quick Answers for Kay County
Planning a trip? Check special fishing regulations for Washunga Bay Lake — or check the official Oklahoma fishing regulations.
All Lakes in Kay County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Washunga Bay Lake | D | - | 306 µg/L |
| 2 | Ponca Lake A | D | - | 259.5 µg/L |
| 3 | Sarge Creek Lake | D | - | 425 µg/L |
| 4 | Coon Creek Lake | D | - | 460 µg/L |
| 5 | Ponca Lake B | F | - | 666.5 µg/L |
| 6 | Bear Creek Lake | F | - | 906.5 µg/L |
Other Counties in Oklahoma
See how Kay County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all 34 states.
Where to stay near Kay County
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Source: EPA National Aquatic Resource Surveys, 2026.