1
AClear Lake
Itasca County, Minnesota · 3.5 mi from Dora Lake
- +Higher grade (B → A)
- ++7.4 ft water clarity
- +Lower phosphorus (9 vs 25 µg/L)
Cleaner Lakes Than Dora Lake
5 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Dora Lake carries a Grade B (Good) water quality score. Within 30 miles, 5 lakes hold a higher grade. Clear Lake (Itasca County, Grade A, 3.5 mi away) is the closest meaningful upgrade.
2
AAmes Lake
Itasca County, Minnesota · 7.3 mi from Dora Lake
- +Higher grade (B → A)
- ++2.5 ft water clarity
- +Lower phosphorus (15 vs 25 µg/L)
3
ALittle Whitefish Lake
Itasca County, Minnesota · 5.8 mi from Dora Lake
- +Higher grade (B → A)
- ++4 ft water clarity
- +Lower phosphorus (14 vs 25 µg/L)
4
ARush Island Lake
Itasca County, Minnesota · 9.2 mi from Dora Lake
- +Higher grade (B → A)
- ++3.3 ft water clarity
- +Lower phosphorus (15 vs 25 µg/L)
5
ATrestle Lake
Itasca County, Minnesota · 9.7 mi from Dora Lake
- +Higher grade (B → A)
- ++7.3 ft water clarity
- +Lower phosphorus (13 vs 25 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.