1
AFox Lake
Beltrami County, Minnesota · 1.2 mi from Turtle Lake
- +Higher grade (B → A)
- ++1.7 ft water clarity
Cleaner Lakes Than Turtle Lake
4 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Turtle Lake carries a Grade B (Good) water quality score. Within 30 miles, 4 lakes hold a higher grade. Fox Lake (Beltrami County, Grade A, 1.2 mi away) is the closest meaningful upgrade.
2
AMovil Lake
Beltrami County, Minnesota · 1.7 mi from Turtle Lake
- +Higher grade (B → A)
- ++4.5 ft water clarity
3
AThree Island Lake
Beltrami County, Minnesota · 2.2 mi from Turtle Lake
- +Higher grade (B → A)
- ++2.5 ft water clarity
4
ABeltrami Lake
Beltrami County, Minnesota · 2.4 mi from Turtle Lake
- +Higher grade (B → A)
- ++1.5 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.