1
AEast Hunter Lake
Sherburne County, Minnesota · 3.6 mi from Blue Lake
- +Two grade letters higher (C → A)
- ++13.2 ft water clarity
- +Lower phosphorus (26 vs 47 µg/L)
Cleaner Lakes Than Blue Lake
3 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Blue Lake carries a Grade C (Fair) water quality score. Within 30 miles, 3 lakes hold a higher grade. East Hunter Lake (Sherburne County, Grade A, 3.6 mi away) is the closest meaningful upgrade.
2
ASandy Lake
Sherburne County, Minnesota · 1.2 mi from Blue Lake
- +Two grade letters higher (C → A)
- ++5.2 ft water clarity
- +Lower phosphorus (12.5 vs 47 µg/L)
3
BWest Hunter Lake
Sherburne County, Minnesota · 3.6 mi from Blue Lake
- +Higher grade (C → B)
- ++8.3 ft water clarity
- +Lower phosphorus (30 vs 47 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.