Cleaner Lakes Than Tom Lake
4 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Tom Lake carries a Grade B (Good) water quality score. Within 30 miles, 4 lakes hold a higher grade. Trout Lake (Cook County, Grade A, 6.3 mi away) is the closest meaningful upgrade.
2
AMcfarland Lake
Cook County, Minnesota · 9.2 mi from Tom Lake
- +Higher grade (B → A)
- ++8 ft water clarity
3
ATrout Lake Deep
Cook County, Minnesota · 10 mi from Tom Lake
- +Higher grade (B → A)
- ++1.7 ft water clarity
4
AGreenwood Lake
Cook County, Minnesota · 7.9 mi from Tom Lake
- +Higher grade (B → A)
- ++5.8 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.