1
BSouth Turtle Lake
Otter Tail County, Minnesota · 5.2 mi from Bass Lake
- +Higher grade (C → B)
- ++8.2 ft water clarity
- +Lower phosphorus (20 vs 40 µg/L)
Cleaner Lakes Than Bass Lake
3 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Bass Lake carries a Grade C (Fair) water quality score. Within 30 miles, 3 lakes hold a higher grade. South Turtle Lake (Otter Tail County, Grade B, 5.2 mi away) is the closest meaningful upgrade.
2
BWall Lake
Otter Tail County, Minnesota · 3.2 mi from Bass Lake
- +Higher grade (C → B)
- ++2.6 ft water clarity
- +Lower phosphorus (21 vs 40 µg/L)
3
CStalker Lake
Otter Tail County, Minnesota · 6.5 mi from Bass Lake
- +Higher overall water quality score
- +Lower phosphorus (22 vs 40 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.