1
AMoon Lake
Vilas County, Wisconsin · 0.7 mi from Little St Germain Lake
- +Higher grade (B → A)
- ++31.2 ft water clarity
- +Lower phosphorus (14.2 vs 45.4 µg/L)
Cleaner Lakes Than Little St Germain Lake
5 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Little St Germain Lake carries a Grade B (Good) water quality score. Within 30 miles, 5 lakes hold a higher grade. Moon Lake (Vilas County, Grade A, 0.7 mi away) is the closest meaningful upgrade.
2
AAlma Lake
Vilas County, Wisconsin · 1.4 mi from Little St Germain Lake
- +Higher grade (B → A)
- ++27.9 ft water clarity
- +Lower phosphorus (15 vs 45.4 µg/L)
3
AShannon Lake
Vilas County, Wisconsin · 2.2 mi from Little St Germain Lake
- +Higher grade (B → A)
- ++11.1 ft water clarity
- +Lower phosphorus (16.5 vs 45.4 µg/L)
4
AFound Lake
Vilas County, Wisconsin · 1.8 mi from Little St Germain Lake
- +Higher grade (B → A)
- ++6.2 ft water clarity
- +Lower phosphorus (20.7 vs 45.4 µg/L)
5
AMcdonald Lake
Vilas County, Wisconsin · 2.6 mi from Little St Germain Lake
- +Higher grade (B → A)
- ++16 ft water clarity
- +Lower phosphorus (20.5 vs 45.4 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.