Kay County Lake Quality
Oklahoma, 11 lakes, average grade D (Nutrient-rich)
Kay County holds 11 monitored lakes. With a sample that small the county-level summary describes those specific waters, not necessarily every water body in the county. 3 of those lakes carry an A–F grade. The county-level summary describes that subset, not every water body listed. The county-wide average grade is D — water quality issues are persistent across most of the monitored basins. 0 lakes fall into the F bracket outright.
The county's lakes lean shallow, which makes the grades sensitive to wind, sediment-resuspension, and any nutrient inputs from the watershed. The cleanest lake on the books is Sarge Creek Lake (C); the most-stressed is Washunga Bay Lake (D).
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Quick Answers for Kay County
Planning a trip? Check special fishing regulations for Sarge Creek Lake — or check the official Oklahoma fishing regulations.
All Lakes in Kay County
11 lakes · 3 graded, 8 not rated3 graded lakes · 8 not rated, hidden
| # | Lake | Grade | Clarity | Phosphorus | Algae | Trophic | Access |
|---|---|---|---|---|---|---|---|
| 1 | CSarge Creek LakeKay | C | No recent samples | 313.5 µg/L | 7.4 µg/L | No recent samples | ✓ Public |
| 2 | DWashunga Bay LakeKay | D | No recent samples | 283 µg/L | 15.7 µg/L | No recent samples | ✓ Public |
| 3 | DCoon Creek LakeKay | D | No recent samples | 359 µg/L | 24 µg/L | No recent samples | Not recorded |
| NRLake PoncaKay | NR | 2.7 ft | No recent samples | No recent samples | No recent samples | ✓ Public | |
| NRKaw LakeKay | NR | 2.4 ft | No recent samples | No recent samples | No recent samples | ✓ Public | |
| NRPonca Lake AKay | NR | No recent samples | 237 µg/L | 9.1 µg/L | No recent samples | ✓ Public | |
| NRPonca Lake BKay | NR | No recent samples | 666.5 µg/L | No recent samples | No recent samples | Not recorded | |
| NRBear Creek LakeKay | NR | No recent samples | 697.5 µg/L | No recent samples | No recent samples | ✓ Public | |
| NRNewkirk Country Club LakeKay | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRLake BlackwellKay | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRHorseshoe LakeKay | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded |
NR = not rated: there is not enough recent sampling to support a letter. That is EPA Integrated Reporting Category 3 (insufficient information), not a failing grade. How grading works.
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Other Counties in Oklahoma
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Source: EPA National Aquatic Resource Surveys, 2026.