1
ASchantzen Lake
Clearwater County, Minnesota · 5.1 mi from North Twin Lake
- +Higher grade (B → A)
- ++7.6 ft water clarity
- +Lower phosphorus (9.5 vs 17 µg/L)
Cleaner Lakes Than North Twin Lake
4 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
North Twin Lake carries a Grade B (Good) water quality score. Within 30 miles, 4 lakes hold a higher grade. Schantzen Lake (Clearwater County, Grade A, 5.1 mi away) is the closest meaningful upgrade.
2
ASouth Twin Lake
Mahnomen County, Minnesota · 1 mi from North Twin Lake
- +Higher grade (B → A)
- ++1.7 ft water clarity
3
ABass Lake
Mahnomen County, Minnesota · 2.8 mi from North Twin Lake
- +Higher grade (B → A)
- ++4.6 ft water clarity
- +Lower phosphorus (10 vs 17 µg/L)
4
ANorris Lake
Mahnomen County, Minnesota · 4.3 mi from North Twin Lake
- +Higher grade (B → A)
- ++3.1 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.