1
AGoodwiler Lake
Iowa County, Wisconsin · 22.9 mi from Unnamed Lake
- +Two grade letters higher (D → A)
- ++11.2 ft water clarity
- +Lower phosphorus (29.7 vs 128 µg/L)
Cleaner Lakes Than Unnamed Lake
5 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Unnamed Lake carries a Grade D (Poor) water quality score. Within 30 miles, 5 lakes hold a higher grade. Goodwiler Lake (Iowa County, Grade A, 22.9 mi away) is the closest meaningful upgrade.
2
BJones Slough Lake
Grant County, Wisconsin · 17.9 mi from Unnamed Lake
- +Two grade letters higher (D → B)
- ++12 ft water clarity
- +Lower phosphorus (31 vs 128 µg/L)
3
BKendal Lake
Iowa County, Wisconsin · 24.2 mi from Unnamed Lake
- +Two grade letters higher (D → B)
- ++18.5 ft water clarity
- +Lower phosphorus (32.7 vs 128 µg/L)
4
BRice Lake
Grant County, Wisconsin · 18.5 mi from Unnamed Lake
- +Two grade letters higher (D → B)
- ++11 ft water clarity
- +Lower phosphorus (66.6 vs 128 µg/L)
5
DUnknown Lake
Grant County, Wisconsin · 19.7 mi from Unnamed Lake
- +Higher overall water quality score
- ++3.8 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.