1
AMiddle Cormorant Lake
Becker County, Minnesota · 1.6 mi from Upper Cormorant Lake
- +Two grade letters higher (C → A)
- ++6.4 ft water clarity
- +Lower phosphorus (13 vs 30 µg/L)
Cleaner Lakes Than Upper Cormorant Lake
3 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Upper Cormorant Lake carries a Grade C (Fair) water quality score. Within 30 miles, 3 lakes hold a higher grade. Middle Cormorant Lake (Becker County, Grade A, 1.6 mi away) is the closest meaningful upgrade.
2
ATurtle Lake
Becker County, Minnesota · 2.2 mi from Upper Cormorant Lake
- +Two grade letters higher (C → A)
- ++14.3 ft water clarity
- +Lower phosphorus (8 vs 30 µg/L)
3
BIda Lake
Becker County, Minnesota · 3.3 mi from Upper Cormorant Lake
- +Higher grade (C → B)
- ++2.5 ft water clarity
- +Lower phosphorus (23 vs 30 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.