1
AUmk-02 Lake
LaPorte County, Wisconsin · 14 mi from Umk-04 Lake
- +Two grade letters higher (F → A)
- ++14 ft water clarity
Cleaner Lakes Than Umk-04 Lake
5 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Umk-04 Lake carries a Grade F (Very Poor) water quality score. Within 30 miles, 5 lakes hold a higher grade. Umk-02 Lake (LaPorte County, Grade A, 14 mi away) is the closest meaningful upgrade.
2
AUmk-04 Lake
LaPorte County, Wisconsin · 11.2 mi from Umk-04 Lake
- +Two grade letters higher (F → A)
- ++11.3 ft water clarity
3
BLmg-02 Lake
LaPorte County, Wisconsin · 13.2 mi from Umk-04 Lake
- +Two grade letters higher (F → B)
- ++5.1 ft water clarity
4
CUmk-02 Lake
LaPorte County, Wisconsin · 2.9 mi from Umk-04 Lake
- +Two grade letters higher (F → C)
- ++4.1 ft water clarity
5
CUmk-05 Lake
Marshall County, Wisconsin · 18.2 mi from Umk-04 Lake
- +Two grade letters higher (F → C)
- ++4.6 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.