1
AVirgin Lake
Oneida County, Wisconsin · 1.6 mi from Big Stone Lake
- +Two grade letters higher (C → A)
- ++14.4 ft water clarity
Cleaner Lakes Than Big Stone Lake
5 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Big Stone Lake carries a Grade C (Fair) water quality score. Within 30 miles, 5 lakes hold a higher grade. Virgin Lake (Oneida County, Grade A, 1.6 mi away) is the closest meaningful upgrade.
2
AMoccasin Lake
Oneida County, Wisconsin · 1.6 mi from Big Stone Lake
- +Two grade letters higher (C → A)
- ++14.7 ft water clarity
3
ASpirit Lake
Oneida County, Wisconsin · 1.7 mi from Big Stone Lake
- +Two grade letters higher (C → A)
- ++33.3 ft water clarity
- +Lower phosphorus (11.4 vs 22.5 µg/L)
4
AWhitefish Lake
Oneida County, Wisconsin · 2.2 mi from Big Stone Lake
- +Two grade letters higher (C → A)
- ++18.5 ft water clarity
- +Lower phosphorus (16 vs 22.5 µg/L)
5
ALittle Fork Lake
Oneida County, Wisconsin · 2.1 mi from Big Stone Lake
- +Two grade letters higher (C → A)
- ++13.3 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.