Cleveland County Lake Quality
Oklahoma, 8 lakes, average grade C (Fair)
Cleveland County has 8 graded lakes — a thin enough sample that one or two stressed lakes can move the county average noticeably. Use the per-lake pages below for what actually matters. The county average is C — the middle of the rubric, with one or two lakes pulling the average up or down depending on year.
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 Lake Thunderbird Norman (A); the most-stressed is Thunderbird Lake Indianhills (D).
Quick Answers for Cleveland County
Planning a trip? Check special fishing regulations for Lake Thunderbird Norman — or check the official Oklahoma fishing regulations.
All Lakes in Cleveland County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Lake Thunderbird Norman | A | - | 13.5 µg/L |
| 2 | Thunderbird Lake Hog Creek | C | - | 33 µg/L |
| 3 | Lake Thunderbird | C | 1.7 ft | 57 µg/L |
| 4 | Thunderbird Lake Fisherman'S | C | - | 37 µg/L |
| 5 | Thunderbird Lake Indianhills | D | - | 68 µg/L |
Other Counties in Oklahoma
See how Cleveland 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 Cleveland County
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Source: EPA National Aquatic Resource Surveys, 2026.