Greenwood County Lake Quality
Kansas, 6 lakes, average grade C (Fair)
Greenwood County has 6 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.
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. Madison City Lake (B) is the cleanest in the county.
Quick Answers for Greenwood County
Planning a trip? Check special fishing regulations for Madison City Lake — or check the official Kansas fishing regulations.
All Lakes in Greenwood County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Madison City Lake | B | 4.1 ft | - |
| 2 | Severy City Lake | B | 3.6 ft | - |
| 3 | Otis Creek Lake | B | - | - |
| 4 | Nla Lake | C | 2.7 ft | 27.2 µg/L |
| 5 | Eureka Lake | C | 2.4 ft | 40.5 µg/L |
| 6 | Fall River Lake | C | 1.9 ft | 49 µg/L |
Other Counties in Kansas
See how Greenwood 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 Greenwood County
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Source: EPA National Aquatic Resource Surveys, 2026.