1
CArrowhead Lake
Sac County, Wisconsin · 23.7 mi from Storm Lake Max Depth
- +Higher grade (D → C)
- ++3.9 ft water clarity
Cleaner Lakes Than Storm Lake Max Depth
2 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Storm Lake Max Depth carries a Grade D (Poor) water quality score. Within 30 miles, 2 lakes hold a higher grade. Arrowhead Lake (Sac County, Grade C, 23.7 mi away) is the closest meaningful upgrade.
2
CNewell Pit Lake
Buena Vista County, Wisconsin · 8.3 mi from Storm Lake Max Depth
- +Higher grade (D → C)
- ++2.4 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.