1
ACamelot Lake
Adams County, Wisconsin · 8.6 mi from Petenwell Flowage Lake
- +Two grade letters higher (C → A)
- ++17.6 ft water clarity
- +Lower phosphorus (17.2 vs 81.7 µg/L)
Cleaner Lakes Than Petenwell Flowage Lake
5 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Petenwell Flowage Lake carries a Grade C (Fair) water quality score. Within 30 miles, 5 lakes hold a higher grade. Camelot Lake (Adams County, Grade A, 8.6 mi away) is the closest meaningful upgrade.
2
ACamelot Lake
Adams County, Wisconsin · 8.9 mi from Petenwell Flowage Lake
- +Two grade letters higher (C → A)
- ++15.2 ft water clarity
- +Lower phosphorus (19.7 vs 81.7 µg/L)
3
ANepco Lake
Wood County, Wisconsin · 13.6 mi from Petenwell Flowage Lake
- +Two grade letters higher (C → A)
- ++28.3 ft water clarity
- +Lower phosphorus (10.9 vs 81.7 µg/L)
4
AArrowhead Lake
Adams County, Wisconsin · 5.6 mi from Petenwell Flowage Lake
- +Two grade letters higher (C → A)
- ++13.5 ft water clarity
- +Lower phosphorus (20.8 vs 81.7 µg/L)
5
ALake Sherwood
Adams County, Wisconsin · 7.6 mi from Petenwell Flowage Lake
- +Two grade letters higher (C → A)
- ++11.9 ft water clarity
- +Lower phosphorus (22.6 vs 81.7 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.