1
AWel-01 Lake
Washington County, Wisconsin · 22.5 mi from Osk-08 Lake
- +Two grade letters higher (D → A)
- ++12.6 ft water clarity
Cleaner Lakes Than Osk-08 Lake
5 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Osk-08 Lake carries a Grade D (Poor) water quality score. Within 30 miles, 5 lakes hold a higher grade. Wel-01 Lake (Washington County, Grade A, 22.5 mi away) is the closest meaningful upgrade.
2
AWem-08 Lake
Washington County, Wisconsin · 11.5 mi from Osk-08 Lake
- +Two grade letters higher (D → A)
- ++7 ft water clarity
3
AWem-09 Lake
Washington County, Wisconsin · 18.7 mi from Osk-08 Lake
- +Two grade letters higher (D → A)
- ++10 ft water clarity
4
BOsk-07 Lake
Clark County, Wisconsin · 7.9 mi from Osk-08 Lake
- +Two grade letters higher (D → B)
- ++3.1 ft water clarity
5
BObs-06 Lake
Harrison County, Wisconsin · 20.5 mi from Osk-08 Lake
- +Two grade letters higher (D → B)
- ++2.4 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.