1
AWel-01 Lake
Washington County, Wisconsin · 8.7 mi from Obs-07 Lake
- +Two grade letters higher (F → A)
- ++14.8 ft water clarity
Cleaner Lakes Than Obs-07 Lake
5 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Obs-07 Lake carries a Grade F (Very Poor) water quality score. Within 30 miles, 5 lakes hold a higher grade. Wel-01 Lake (Washington County, Grade A, 8.7 mi away) is the closest meaningful upgrade.
2
AWem-08 Lake
Washington County, Wisconsin · 9.6 mi from Obs-07 Lake
- +Two grade letters higher (F → A)
- ++9.2 ft water clarity
3
AWem-09 Lake
Washington County, Wisconsin · 10.8 mi from Obs-07 Lake
- +Two grade letters higher (F → A)
- ++12.2 ft water clarity
4
BObs-06 Lake
Harrison County, Wisconsin · 11.2 mi from Obs-07 Lake
- +Two grade letters higher (F → B)
- ++4.6 ft water clarity
5
BOsk-07 Lake
Clark County, Wisconsin · 14.7 mi from Obs-07 Lake
- +Two grade letters higher (F → B)
- ++5.3 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.