1
CArrowhead Lake
Sac County, Wisconsin · 1.2 mi from Black Hawk Lake
- +Two grade letters higher (F → C)
- ++4.7 ft water clarity
Cleaner Lakes Than Black Hawk Lake
5 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Black Hawk Lake carries a Grade F (Very Poor) water quality score. Within 30 miles, 5 lakes hold a higher grade. Arrowhead Lake (Sac County, Grade C, 1.2 mi away) is the closest meaningful upgrade.
2
CNewell Pit Lake
Buena Vista County, Wisconsin · 22.1 mi from Black Hawk Lake
- +Two grade letters higher (F → C)
- ++3.2 ft water clarity
3
DMoorehead Lake
Ida County, Wisconsin · 23.5 mi from Black Hawk Lake
- +Higher grade (F → D)
- ++2.8 ft water clarity
4
DStorm Lake Max Depth
Buena Vista County, Wisconsin · 24.2 mi from Black Hawk Lake
- +Higher grade (F → D)
5
DYellow Smoke Lake
Crawford County, Wisconsin · 24.3 mi from Black Hawk Lake
- +Higher grade (F → D)
- ++2.1 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.