Butler County Lake Quality
Kansas, 4 lakes, average grade D (Poor)
Butler 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. On average, Butler County lakes grade D, with phosphorus loading and reduced clarity showing up across most of the dataset.
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 El Dorado Lake (C); the most-stressed is Augusta City Lake (D).
Quick Answers for Butler County
Planning a trip? Check special fishing regulations for El Dorado Lake — or check the official Kansas fishing regulations.
All Lakes in Butler County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | El Dorado Lake | C | 2.8 ft | 34.5 µg/L |
| 2 | Augusta City Lake | D | 1.5 ft | 90 µg/L |
| 3 | Augusta Santa Fe Lake | D | 1 ft | 95.1 µg/L |
| 4 | Butler Co State Fishing Lake | D | 2.1 ft | 120 µg/L |
Other Counties in Kansas
See how Butler 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 Butler County
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Source: EPA National Aquatic Resource Surveys, 2026.