1
ASugar Lake
Wright County, Minnesota · 4.7 mi from Locke Lake
- +Two grade letters higher (C → A)
- ++12.7 ft water clarity
- +Lower phosphorus (13 vs 32 µg/L)
Cleaner Lakes Than Locke Lake
4 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Locke Lake carries a Grade C (Fair) water quality score. Within 30 miles, 4 lakes hold a higher grade. Sugar Lake (Wright County, Grade A, 4.7 mi away) is the closest meaningful upgrade.
2
AEmber Lake
Wright County, Minnesota · 2.1 mi from Locke Lake
- +Two grade letters higher (C → A)
- ++9.8 ft water clarity
- +Lower phosphorus (17.5 vs 32 µg/L)
3
AIda Lake
Wright County, Minnesota · 4.7 mi from Locke Lake
- +Two grade letters higher (C → A)
- ++9 ft water clarity
- +Lower phosphorus (14 vs 32 µg/L)
4
CIndian Lake
Wright County, Minnesota · 4.9 mi from Locke Lake
- +Higher overall water quality score
- ++3.3 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.