1
ALong Lake
Oconto County, Wisconsin · 3.8 mi from Peterson Lake
- +Two grade letters higher (D → A)
- ++37.8 ft water clarity
- +Lower phosphorus (10.2 vs 129.5 µg/L)
Cleaner Lakes Than Peterson Lake
4 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Peterson Lake carries a Grade D (Poor) water quality score. Within 30 miles, 4 lakes hold a higher grade. Long Lake (Oconto County, Grade A, 3.8 mi away) is the closest meaningful upgrade.
2
AKelly Lake
Oconto County, Wisconsin · 4 mi from Peterson Lake
- +Two grade letters higher (D → A)
- ++24.7 ft water clarity
- +Lower phosphorus (14.3 vs 129.5 µg/L)
3
BCooley Lake
Oconto County, Wisconsin · 1.6 mi from Peterson Lake
- +Two grade letters higher (D → B)
- ++6.6 ft water clarity
- +Lower phosphorus (39.3 vs 129.5 µg/L)
4
CHoerth Lake
Oconto County, Wisconsin · 0.3 mi from Peterson Lake
- +Higher grade (D → C)
- ++1.7 ft water clarity
- +Lower phosphorus (108 vs 129.5 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.