1
ALower Birch Lake
Isanti County, Minnesota · 6.6 mi from Linwood Lake
- +Two grade letters higher (C → A)
- ++6.9 ft water clarity
- +Lower phosphorus (15 vs 42.5 µg/L)
Cleaner Lakes Than Linwood Lake
5 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Linwood Lake carries a Grade C (Fair) water quality score. Within 30 miles, 5 lakes hold a higher grade. Lower Birch Lake (Isanti County, Grade A, 6.6 mi away) is the closest meaningful upgrade.
2
ANetta Lake
Anoka County, Minnesota · 6.8 mi from Linwood Lake
- +Two grade letters higher (C → A)
- ++7.4 ft water clarity
- +Lower phosphorus (14.5 vs 42.5 µg/L)
3
BHoffman Lake
Isanti County, Minnesota · 5.8 mi from Linwood Lake
- +Higher grade (C → B)
- +Lower phosphorus (15 vs 42.5 µg/L)
4
CCoon Lake
Anoka County, Minnesota · 3.8 mi from Linwood Lake
- +Higher overall water quality score
- ++1.7 ft water clarity
- +Lower phosphorus (23 vs 42.5 µg/L)
5
CBoot Lake
Anoka County, Minnesota · 1.1 mi from Linwood Lake
- +Higher overall water quality score
- ++2.8 ft water clarity
- +Lower phosphorus (31 vs 42.5 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.