What is the cleanest lake near Council Grove Lake?

Geary Co State Fishing Lake in Geary County holds a Grade B water quality score and is 24.7 miles from Council Grove Lake.

Why is Council Grove Lake not Grade A?

Council Grove Lake holds Grade D, with about 1.7 ft of water clarity and 260 µg/L of phosphorus. The grade reflects measured water quality against Metropolitan Council thresholds. Cleaner alternatives nearby score higher on clarity, phosphorus, or chlorophyll-a.

Are these recommendations based on real data?

Yes. Every grade is calculated from EPA Water Quality Portal samples for the lake. Recommendations are limited to lakes within 30 miles of Council Grove Lake in Kansas, with strictly higher numeric grade scores and sufficient monitoring data.

Cleaner Lakes Than Council Grove Lake, Top 3 Within 30 Miles, LakeQuality

Cleaner Lakes Than Council Grove Lake

3 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.

Council Grove Lake carries a Grade D (Poor) water quality score. Within 30 miles, 3 lakes hold a higher grade. Geary Co State Fishing Lake (Geary County, Grade B, 24.7 mi away) is the closest meaningful upgrade.

Geary Co State Fishing Lake

Geary County, Kansas · 24.7 mi from Council Grove Lake

+Two grade letters higher (D → B)
++2.6 ft water clarity
+Lower phosphorus (15.5 vs 260 µg/L)

Lake Wabaunsee

Wabaunsee County, Kansas · 20.8 mi from Council Grove Lake

+Higher grade (D → C)
++3.2 ft water clarity
+Lower phosphorus (28 vs 260 µg/L)

Herington City Park Lake

Dickinson County, Kansas · 23.8 mi from Council Grove Lake

+Higher grade (D → C)
++1.1 ft water clarity
+Lower phosphorus (45.5 vs 260 µg/L)

Reading the cohort

Only 3 lakes within a 30-mile radius score better than Council Grove Lake's Grade D. The narrow set of options reflects either a fairly clean lake to begin with or a region without a wide range of cleaner alternatives — the trip-planning decision is more constrained than the headline "cleaner lakes nearby" suggests.

The nearest cleaner alternative — Geary Co State Fishing Lake in Geary County — sits 24.7 miles from Council Grove Lake, putting it firmly in "destination trip" rather than "neighborhood swap" range. The water-quality gap has to be the deciding factor; for a casual outing, Council Grove Lake is the practical choice and the cleaner options are reserved for purpose-specific visits.

The EPA water-quality grading combines clarity (Secchi depth), phosphorus, and chlorophyll-a measurements from state environmental sampling. A higher letter grade reflects measurably cleaner water on those indicators, not subjective beauty or access quality — a Grade A lake might have worse boat-launch facilities or shoreline access than a Grade C neighbor, so the ranking is one input alongside the rest of trip planning. See the methodology page for the full grading formula.

How this list is built

Every lake on LakeQuality has a calculated grade from EPA Water Quality Portal samples — secchi depth, total phosphorus, and chlorophyll-a measured against Metropolitan Council thresholds. To suggest cleaner alternatives, we filter lakes within 30 miles to those with a strictly higher numeric score, then rank by grade improvement with a small proximity tiebreak. Cross-state and limited-data lakes are excluded so the list stays locally relevant.