1
CIrondequoit Bay Lake
Monroe County, Wisconsin · 10.5 mi from Lk Ontario Lake
- +Higher grade (D → C)
- +Lower phosphorus (27.5 vs 126 µg/L)
Cleaner Lakes Than Lk Ontario Lake
1 higher-graded lake within 30 miles, ranked by grade improvement and proximity.
Lk Ontario Lake carries a Grade D (Poor) water quality score. Within 30 miles, 1 lake holds a higher grade. Irondequoit Bay Lake (Monroe County, Grade C, 10.5 mi away) is the closest meaningful upgrade.
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.