1
AArmy Lake
Walworth County, Wisconsin · 1.9 mi from Potter Lake
- +Two grade letters higher (C → A)
- ++23 ft water clarity
- +Lower phosphorus (11.2 vs 35 µg/L)
Cleaner Lakes Than Potter Lake
5 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Potter Lake carries a Grade C (Fair) water quality score. Within 30 miles, 5 lakes hold a higher grade. Army Lake (Walworth County, Grade A, 1.9 mi away) is the closest meaningful upgrade.
2
ALake Beulah
Walworth County, Wisconsin · 2.1 mi from Potter Lake
- +Two grade letters higher (C → A)
- ++28.9 ft water clarity
- +Lower phosphorus (13.4 vs 35 µg/L)
3
ALower Phantom Lake
Waukesha County, Wisconsin · 2.7 mi from Potter Lake
- +Two grade letters higher (C → A)
- ++15.4 ft water clarity
- +Lower phosphorus (15.7 vs 35 µg/L)
4
ABooth Lake
Walworth County, Wisconsin · 4.5 mi from Potter Lake
- +Two grade letters higher (C → A)
- ++21.5 ft water clarity
- +Lower phosphorus (16.4 vs 35 µg/L)
5
ALake Beulah Station 2
Walworth County, Wisconsin · 2.2 mi from Potter Lake
- +Two grade letters higher (C → A)
- ++6.9 ft water clarity
- +Lower phosphorus (16.5 vs 35 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.