1
DAtkinson Lake by Sw 1401 Rd
St. Clair County, Wisconsin · 20.2 mi from Izaak Walton Lake
- +Higher grade (F → D)
- +Lower phosphorus (63.7 vs 280 µg/L)
Cleaner Lakes Than Izaak Walton Lake
5 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Izaak Walton Lake carries a Grade F (Very Poor) water quality score. Within 30 miles, 5 lakes hold a higher grade. Atkinson Lake by Sw 1401 Rd (St. Clair County, Grade D, 20.2 mi away) is the closest meaningful upgrade.
2
FLamar City Lk. Up Northern Arm Lake
Barton County, Wisconsin · 26.1 mi from Izaak Walton Lake
- +Higher overall water quality score
- +Lower phosphorus (78 vs 280 µg/L)
3
FLamar City Lk. East Arm Lake
Barton County, Wisconsin · 26.3 mi from Izaak Walton Lake
- +Higher overall water quality score
- +Lower phosphorus (72.3 vs 280 µg/L)
4
FLamar City Lk. Nr. Dam Lake
Barton County, Wisconsin · 26.4 mi from Izaak Walton Lake
- +Higher overall water quality score
- +Lower phosphorus (66 vs 280 µg/L)
5
FLamar City Lk. W of Se 30th Ln Lake
Barton County, Wisconsin · 26.4 mi from Izaak Walton Lake
- +Higher overall water quality score
- +Lower phosphorus (73.3 vs 280 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.