1
ALac Lake
Carlton County, Minnesota · 0.7 mi from Miller Lake
- +Two grade letters higher (C → A)
- ++12.6 ft water clarity
- +Lower phosphorus (15.5 vs 32 µg/L)
Cleaner Lakes Than Miller Lake
5 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Miller Lake carries a Grade C (Fair) water quality score. Within 30 miles, 5 lakes hold a higher grade. Lac Lake (Carlton County, Grade A, 0.7 mi away) is the closest meaningful upgrade.
2
ASofie Lake
Carlton County, Minnesota · 3.6 mi from Miller Lake
- +Two grade letters higher (C → A)
- ++13.4 ft water clarity
- +Lower phosphorus (20.5 vs 32 µg/L)
3
BHardwood Lake
Carlton County, Minnesota · 3.3 mi from Miller Lake
- +Higher grade (C → B)
- ++3.1 ft water clarity
- +Lower phosphorus (20 vs 32 µg/L)
4
CRice Portage Lake
Carlton County, Minnesota · 2 mi from Miller Lake
- +Higher overall water quality score
5
CPerch Lake
Carlton County, Minnesota · 3 mi from Miller Lake
- +Higher overall water quality score
- ++2.9 ft water clarity
- +Lower phosphorus (25 vs 32 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.