1
ALindgren Lake
Beltrami County, Minnesota · 3.8 mi from Gull Lake
- +Two grade letters higher (C → A)
- ++7.6 ft water clarity
- +Lower phosphorus (14 vs 27 µg/L)
Cleaner Lakes Than Gull Lake
5 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Gull Lake carries a Grade C (Fair) water quality score. Within 30 miles, 5 lakes hold a higher grade. Lindgren Lake (Beltrami County, Grade A, 3.8 mi away) is the closest meaningful upgrade.
2
AThree Island Lake
Beltrami County, Minnesota · 5.5 mi from Gull Lake
- +Two grade letters higher (C → A)
- ++6.1 ft water clarity
- +Lower phosphorus (17 vs 27 µg/L)
3
AFox Lake
Beltrami County, Minnesota · 6.6 mi from Gull Lake
- +Two grade letters higher (C → A)
- ++5.3 ft water clarity
- +Lower phosphorus (14 vs 27 µg/L)
4
ABeltrami Lake
Beltrami County, Minnesota · 6.7 mi from Gull Lake
- +Two grade letters higher (C → A)
- ++5.1 ft water clarity
- +Lower phosphorus (15 vs 27 µg/L)
5
BBlack Lake
Beltrami County, Minnesota · 4.8 mi from Gull Lake
- +Higher grade (C → B)
- ++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.