1
ALong Lake
Cass County, Minnesota · 3.4 mi from Town Line Lake
- +Higher grade (B → A)
- ++15.2 ft water clarity
Cleaner Lakes Than Town Line Lake
2 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Town Line Lake carries a Grade B (Good) water quality score. Within 30 miles, 2 lakes hold a higher grade. Long Lake (Cass County, Grade A, 3.4 mi away) is the closest meaningful upgrade.
2
AMaple Lake
Cass County, Minnesota · 3.2 mi from Town Line Lake
- +Higher grade (B → A)
- ++6.9 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.