1
CBeebe Lake
Wright County, Minnesota · 7.4 mi from Cowley Lake
- +Two grade letters higher (F → C)
- ++3.8 ft water clarity
- +Lower phosphorus (35.5 vs 738.6 µg/L)
Cleaner Lakes Than Cowley Lake
2 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Cowley Lake carries a Grade F (Very Poor) water quality score. Within 30 miles, 2 lakes hold a higher grade. Beebe Lake (Wright County, Grade C, 7.4 mi away) is the closest meaningful upgrade.
2
DSchwappauf Lake
Hennepin County, Minnesota · 6.8 mi from Cowley Lake
- +Higher grade (F → D)
- ++3.6 ft water clarity
- +Lower phosphorus (65.1 vs 738.6 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.