Skip to main content
LakeQuality

Cleaner Lakes Than Thomas Lake

2 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.

Thomas Lake carries a Grade C (Fair) water quality score. Within 30 miles, 2 lakes hold a higher grade. Carlson Lake (Dakota County, Grade B, 0.7 mi away) is the closest meaningful upgrade.

1
B

Carlson Lake

Dakota County, Minnesota · 0.7 mi from Thomas Lake
  • +Higher grade (C → B)
  • ++2.4 ft water clarity
2
C

Jensen Lake

Dakota County, Minnesota · 1.3 mi from Thomas Lake
  • +Higher overall water quality score

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.

Back to Thomas Lake →Cleanest lakes in Minnesota →All cleanest lakes →Cleaner lake finder →