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LakeQuality

Cleaner Lakes Than Lewis Lake

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

Lewis Lake carries a Grade F (Very Poor) water quality score. Within 30 miles, 2 lakes hold a higher grade. Lake Wappapello Nr. Dam (Wayne County, Grade D, 24.3 mi away) is the closest meaningful upgrade.

1
D

Lake Wappapello Nr. Dam

Wayne County, Wisconsin · 24.3 mi from Lewis Lake
  • +Higher grade (F → D)
  • +Lower phosphorus (50.7 vs 101 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.