1
AClark Lake
Door County, Wisconsin · 5.5 mi from Dunes Lake
- +Higher grade (B → A)
- ++27.9 ft water clarity
- +Lower phosphorus (10.5 vs 21.2 µg/L)
Cleaner Lakes Than Dunes Lake
3 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Dunes Lake carries a Grade B (Good) water quality score. Within 30 miles, 3 lakes hold a higher grade. Clark Lake (Door County, Grade A, 5.5 mi away) is the closest meaningful upgrade.
2
AKangaroo Lake
Door County, Wisconsin · 12.1 mi from Dunes Lake
- +Higher grade (B → A)
- ++14.8 ft water clarity
- +Lower phosphorus (13.2 vs 21.2 µg/L)
3
AMi40 Lake
Door County, Wisconsin · 16.1 mi from Dunes Lake
- +Higher grade (B → A)
- ++30.4 ft water clarity
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.