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LakeQuality

Cleaner Lakes Than Qacmainstdup Lake

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

Qacmainstdup Lake carries a Grade B (Good) water quality score. Within 30 miles, 3 lakes hold a higher grade. Garlk1390a Lake (Mercer County, Grade A, 0.7 mi away) is the closest meaningful upgrade.

1
A

Garlk1390a Lake

Mercer County, Wisconsin · 0.7 mi from Qacmainstdup Lake
  • +Higher grade (B → A)
2
A

Qacmainstfbk Lake

Mercer County, Wisconsin · 0 mi from Qacmainstdup Lake
  • +Higher grade (B → A)
3
B

Garlk1412dw Lake

Mercer County, Wisconsin · 16.4 mi from Qacmainstdup Lake
  • +Higher overall water quality score

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.

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