1
ALower Birch Lake
Isanti County, Minnesota · 2.6 mi from Typo Lake
- +Two grade letters higher (F → A)
- ++9.8 ft water clarity
- +Lower phosphorus (15 vs 198 µg/L)
Cleaner Lakes Than Typo Lake
5 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Typo Lake carries a Grade F (Very Poor) water quality score. Within 30 miles, 5 lakes hold a higher grade. Lower Birch Lake (Isanti County, Grade A, 2.6 mi away) is the closest meaningful upgrade.
2
AUpper Birch Lake
Isanti County, Minnesota · 3.1 mi from Typo Lake
- +Two grade letters higher (F → A)
- ++9.8 ft water clarity
- +Lower phosphorus (9.5 vs 198 µg/L)
3
BHoffman Lake
Isanti County, Minnesota · 1.8 mi from Typo Lake
- +Two grade letters higher (F → B)
- ++3.1 ft water clarity
- +Lower phosphorus (15 vs 198 µg/L)
4
BHorseshoe Lake
Isanti County, Minnesota · 3.8 mi from Typo Lake
- +Two grade letters higher (F → B)
- ++2.6 ft water clarity
- +Lower phosphorus (12 vs 198 µg/L)
5
BHorseleg Lake
Isanti County, Minnesota · 4.3 mi from Typo Lake
- +Two grade letters higher (F → B)
- ++2.7 ft water clarity
- +Lower phosphorus (17 vs 198 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.