1
BSeetal Lake
Gasconade County, Wisconsin · 21.5 mi from Foxboro Lake
- +Two grade letters higher (D → B)
- ++3.2 ft water clarity
Cleaner Lakes Than Foxboro Lake
5 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Foxboro Lake carries a Grade D (Poor) water quality score. Within 30 miles, 5 lakes hold a higher grade. Seetal Lake (Gasconade County, Grade B, 21.5 mi away) is the closest meaningful upgrade.
2
BSherwood Lake Nr. Dam
Warren County, Wisconsin · 27.2 mi from Foxboro Lake
- +Two grade letters higher (D → B)
- ++1.9 ft water clarity
4
CPort Hudson Lake
Franklin County, Wisconsin · 7.3 mi from Foxboro Lake
- +Higher grade (D → C)
- ++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.