1
AUmk-02 Lake
LaPorte County, Wisconsin · 16.4 mi from Umk-01 Lake
- +Two grade letters higher (D → A)
- ++13.4 ft water clarity
Cleaner Lakes Than Umk-01 Lake
5 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Umk-01 Lake carries a Grade D (Poor) water quality score. Within 30 miles, 5 lakes hold a higher grade. Umk-02 Lake (LaPorte County, Grade A, 16.4 mi away) is the closest meaningful upgrade.
2
AUmk-04 Lake
LaPorte County, Wisconsin · 19.5 mi from Umk-01 Lake
- +Two grade letters higher (D → A)
- ++10.7 ft water clarity
3
BLmg-02 Lake
LaPorte County, Wisconsin · 17 mi from Umk-01 Lake
- +Two grade letters higher (D → B)
- ++4.5 ft water clarity
4
CUmk-02 Lake
LaPorte County, Wisconsin · 8.9 mi from Umk-01 Lake
- +Higher grade (D → C)
- ++3.5 ft water clarity
5
CUmk-05 Lake
Marshall County, Wisconsin · 17 mi from Umk-01 Lake
- +Higher grade (D → C)
- ++4 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.