1
ABone Lake
Polk County, Wisconsin · 4.2 mi from Big Blake Lake
- +Two grade letters higher (C → A)
- ++14.8 ft water clarity
- +Lower phosphorus (20.2 vs 59.5 µg/L)
Cleaner Lakes Than Big Blake Lake
4 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Big Blake Lake carries a Grade C (Fair) water quality score. Within 30 miles, 4 lakes hold a higher grade. Bone Lake (Polk County, Grade A, 4.2 mi away) is the closest meaningful upgrade.
2
BNorth White Ash Lake
Polk County, Wisconsin · 2.3 mi from Big Blake Lake
- +Higher grade (C → B)
- ++6.2 ft water clarity
3
BPogo Lake
Polk County, Wisconsin · 4.3 mi from Big Blake Lake
- +Higher grade (C → B)
- ++6.6 ft water clarity
- +Lower phosphorus (38.2 vs 59.5 µg/L)
4
BLittle Blake Lake
Polk County, Wisconsin · 0.7 mi from Big Blake Lake
- +Higher grade (C → B)
- ++1.7 ft water clarity
- +Lower phosphorus (43.8 vs 59.5 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.