Leavenworth County Lake Quality
Kansas, 2 lakes, average grade C (Fair)
Only 2 lakes in Leavenworth 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. Leavenworth County averages to a C. The distribution behind that average matters more than the letter: a few stressed lakes versus many decent ones can produce the same average as the inverse.
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 Leavenworth Co State Fishing Lake (B); the most-stressed is Nla Lake (C).
Quick Answers for Leavenworth County
Planning a trip? Check special fishing regulations for Leavenworth Co State Fishing Lake — or check the official Kansas fishing regulations.
All Lakes in Leavenworth County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Leavenworth Co State Fishing Lake | B | 4.3 ft | 12 µg/L |
| 2 | Nla Lake | C | 3.2 ft | 67.2 µg/L |
Other Counties in Kansas
See how Leavenworth County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all 34 states.
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Source: EPA National Aquatic Resource Surveys, 2026.