1
ASabin Lake
St. Louis County, Minnesota · 8.1 mi from Heikkilla Lake
- +Two grade letters higher (C → A)
- ++30 ft water clarity
- +Lower phosphorus (19.5 vs 27.5 µg/L)
Cleaner Lakes Than Heikkilla Lake
4 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Heikkilla Lake carries a Grade C (Fair) water quality score. Within 30 miles, 4 lakes hold a higher grade. Sabin Lake (St. Louis County, Grade A, 8.1 mi away) is the closest meaningful upgrade.
2
AWhitewater Lake
St. Louis County, Minnesota · 9.7 mi from Heikkilla Lake
- +Two grade letters higher (C → A)
- ++10.4 ft water clarity
- +Lower phosphorus (14 vs 27.5 µg/L)
3
ABear Head Lake
St. Louis County, Minnesota · 10.3 mi from Heikkilla Lake
- +Two grade letters higher (C → A)
- ++6 ft water clarity
- +Lower phosphorus (19.5 vs 27.5 µg/L)
4
BWynne Lake
St. Louis County, Minnesota · 8.4 mi from Heikkilla Lake
- +Higher grade (C → B)
- ++2.3 ft water clarity
- +Lower phosphorus (15.5 vs 27.5 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.