1
AWel-01 Lake
Washington County, Wisconsin · 19.5 mi from Obs-06 Lake
- +Higher grade (B → A)
- ++10.2 ft water clarity
Cleaner Lakes Than Obs-06 Lake
3 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Obs-06 Lake carries a Grade B (Good) water quality score. Within 30 miles, 3 lakes hold a higher grade. Wel-01 Lake (Washington County, Grade A, 19.5 mi away) is the closest meaningful upgrade.
2
AWem-08 Lake
Washington County, Wisconsin · 18.6 mi from Obs-06 Lake
- +Higher grade (B → A)
- ++4.6 ft water clarity
3
AWem-09 Lake
Washington County, Wisconsin · 21.8 mi from Obs-06 Lake
- +Higher grade (B → A)
- ++7.6 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.