1
ALong Lake
Cass County, Minnesota · 5 mi from Middle Sucker Lake
- +Two grade letters higher (C → A)
- ++17 ft water clarity
Cleaner Lakes Than Middle Sucker Lake
5 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Middle Sucker Lake carries a Grade C (Fair) water quality score. Within 30 miles, 5 lakes hold a higher grade. Long Lake (Cass County, Grade A, 5 mi away) is the closest meaningful upgrade.
2
AMaple Lake
Cass County, Minnesota · 5.9 mi from Middle Sucker Lake
- +Two grade letters higher (C → A)
- ++8.7 ft water clarity
3
BSwift Lake
Cass County, Minnesota · 2 mi from Middle Sucker Lake
- +Higher grade (C → B)
- ++2.7 ft water clarity
4
BTown Line Lake
Cass County, Minnesota · 4.2 mi from Middle Sucker Lake
- +Higher grade (C → B)
- ++1.8 ft water clarity
5
BPortage Lake
Cass County, Minnesota · 0 mi from Middle Sucker Lake
- +Higher grade (C → B)
- ++2.2 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.