1
ARobinson Pond
Jackson County, Wisconsin · 15.4 mi from Lake Tomah
- +Two grade letters higher (D → A)
- ++14 ft water clarity
- +Lower phosphorus (10.1 vs 140 µg/L)
Cleaner Lakes Than Lake Tomah
3 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Lake Tomah carries a Grade D (Poor) water quality score. Within 30 miles, 3 lakes hold a higher grade. Robinson Pond (Jackson County, Grade A, 15.4 mi away) is the closest meaningful upgrade.
2
AWazee Lake
Jackson County, Wisconsin · 23.6 mi from Lake Tomah
- +Two grade letters higher (D → A)
- ++100.9 ft water clarity
- +Lower phosphorus (9.3 vs 140 µg/L)
3
DDecorah Lake
Juneau County, Wisconsin · 25 mi from Lake Tomah
- +Higher overall water quality score
- ++2.5 ft water clarity
- +Lower phosphorus (116 vs 140 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.