1
ASt. Marys Lake
St. Louis County, Minnesota · 14.8 mi from Carey Lake
- +Two grade letters higher (C → A)
- ++11.9 ft water clarity
- +Lower phosphorus (7.5 vs 30 µg/L)
Cleaner Lakes Than Carey Lake
2 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Carey Lake carries a Grade C (Fair) water quality score. Within 30 miles, 2 lakes hold a higher grade. St. Marys Lake (St. Louis County, Grade A, 14.8 mi away) is the closest meaningful upgrade.
2
CW Two Rivers Reservoir
St. Louis County, Minnesota · 8.2 mi from Carey Lake
- +Higher overall water quality score
- ++1.5 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.