1
ATamarack Bay Lake
Cass County, Minnesota · 3.9 mi from Cut Foot Sioux Lake
- +Two grade letters higher (C → A)
- ++4 ft water clarity
Cleaner Lakes Than Cut Foot Sioux Lake
4 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Cut Foot Sioux Lake carries a Grade C (Fair) water quality score. Within 30 miles, 4 lakes hold a higher grade. Tamarack Bay Lake (Cass County, Grade A, 3.9 mi away) is the closest meaningful upgrade.
2
ASand Lake
Itasca County, Minnesota · 7 mi from Cut Foot Sioux Lake
- +Two grade letters higher (C → A)
- ++5.5 ft water clarity
- +Lower phosphorus (18 vs 30 µg/L)
3
BGreeley Lake
Itasca County, Minnesota · 3.5 mi from Cut Foot Sioux Lake
- +Higher grade (C → B)
- ++1.5 ft water clarity
4
BSchoolhouse Lake
Itasca County, Minnesota · 4.8 mi from Cut Foot Sioux Lake
- +Higher grade (C → B)
- +Lower phosphorus (18 vs 30 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.