Geary County Lake Quality
Kansas, 3 lakes, average grade B (Good)
Geary County has 3 monitored 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. 1 of those lake carry an A–F grade. The county-level summary describes that subset, not every water body listed. With an average grade of B, Geary County sits comfortably above the Kansas median.
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 Geary Co State Fishing Lake (B); the most-stressed is Geary Co State Fishing Lake (B).
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Quick Answers for Geary County
Planning a trip? Check special fishing regulations for Geary Co State Fishing Lake — or check the official Kansas fishing regulations.
All Lakes in Geary County
3 lakes · 1 graded, 2 not rated1 graded lake · 2 not rated, hidden
| # | Lake | Grade | Clarity | Phosphorus | Algae | Trophic | Access |
|---|---|---|---|---|---|---|---|
| 1 | BGeary Co State Fishing LakeGeary | B | 4.3 ft | 31.5 µg/L | 12.8 µg/L | No recent samples | ✓ Public |
| NRGathering Pond EastGeary | NR | 1 ft | 450 µg/L | 189 µg/L | No recent samples | ✓ Public | |
| NRMilford LakeGeary | NR | No recent samples | No recent samples | No recent samples | No recent samples | ✓ Public |
NR = not rated: there is not enough recent sampling to support a letter. That is EPA Integrated Reporting Category 3 (insufficient information), not a failing grade. How grading works.
Lake Match
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Six questions — swimming, fishing, quiet, cabins, drive time — and a shortlist of graded lakes that fit, with the water quality behind each one.
Other Counties in Kansas
See how Geary County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all United States (49 states), Canada (Ontario, Québec, Nova Scotia, British Columbia and Newfoundland and Labrador), and 38 other country hubs..
Source: EPA National Aquatic Resource Surveys, 2026.