1
ASquare Lake
Washington County, Minnesota · 3.6 mi from Unnamed Lake
- +Two grade letters higher (D → A)
- ++15.4 ft water clarity
- +Lower phosphorus (8 vs 33 µg/L)
Cleaner Lakes Than Unnamed Lake
2 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Unnamed Lake carries a Grade D (Poor) water quality score. Within 30 miles, 2 lakes hold a higher grade. Square Lake (Washington County, Grade A, 3.6 mi away) is the closest meaningful upgrade.
2
ABig Marine Lake
Washington County, Minnesota · 1.2 mi from Unnamed Lake
- +Two grade letters higher (D → A)
- ++9.9 ft water clarity
- +Lower phosphorus (14.5 vs 33 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.