What is the cleanest lake near Lake Luna?

Harrisonville City Lake in Cass County holds a Grade F water quality score and is 0.4 miles from Lake Luna.

Why is Lake Luna not Grade A?

Lake Luna holds Grade F, with about 1.2 ft of water clarity and 192.9 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 Lake Luna in Wisconsin, with strictly higher numeric grade scores and sufficient monitoring data.

Cleaner Lakes Than Lake Luna, Top 4 Within 30 Miles, LakeQuality

Cleaner Lakes Than Lake Luna

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

Lake Luna carries a Grade F (Very Poor) water quality score. Within 30 miles, 4 lakes hold a higher grade. Harrisonville City Lake (Cass County, Grade F, 0.4 mi away) is the closest meaningful upgrade.

Harrisonville City Lake

Cass County, Wisconsin · 0.4 mi from Lake Luna

+Higher overall water quality score
+Lower phosphorus (78.5 vs 192.9 µg/L)

Harrisonville Lake

Cass County, Wisconsin · 7.3 mi from Lake Luna

+Higher overall water quality score
+Lower phosphorus (69 vs 192.9 µg/L)

Raintree Lake

Cass County, Wisconsin · 12.1 mi from Lake Luna

+Higher overall water quality score
++1.3 ft water clarity
+Lower phosphorus (66.4 vs 192.9 µg/L)

Coot Lake

Jackson County, Wisconsin · 14.4 mi from Lake Luna

+Higher overall water quality score
+Lower phosphorus (77.2 vs 192.9 µg/L)

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.