Pottawatomie County Lake Quality
Oklahoma, 4 lakes, average grade B (Good)
Pottawatomie County has 4 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. With an average grade of B, Pottawatomie County sits comfortably above the {{stateName}} median.
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. Wes Watkins Reservoir (C) is the cleanest in the county.
Quick Answers for Pottawatomie County
Planning a trip? Check special fishing regulations for Wes Watkins Reservoir — or check the official Oklahoma fishing regulations.
All Lakes in Pottawatomie County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Wes Watkins Reservoir | C | 1.8 ft | 32 µg/L |
| 2 | Thunderbird Lake Nature Center | C | - | 37.5 µg/L |
Other Counties in Oklahoma
See how Pottawatomie 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 Pottawatomie County
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Source: EPA National Aquatic Resource Surveys, 2026.