1
ALittle Round Lake
Sawyer County, Wisconsin · 2.1 mi from Green Lake
- +Higher grade (B → A)
- ++45.6 ft water clarity
- +Lower phosphorus (12 vs 36 µg/L)
Cleaner Lakes Than Green Lake
5 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Green Lake carries a Grade B (Good) water quality score. Within 30 miles, 5 lakes hold a higher grade. Little Round Lake (Sawyer County, Grade A, 2.1 mi away) is the closest meaningful upgrade.
2
AOsprey Lake
Sawyer County, Wisconsin · 2.3 mi from Green Lake
- +Higher grade (B → A)
- ++42.9 ft water clarity
- +Lower phosphorus (14 vs 36 µg/L)
3
AChristner Lake
Sawyer County, Wisconsin · 3.1 mi from Green Lake
- +Higher grade (B → A)
- ++21.7 ft water clarity
- +Lower phosphorus (19.5 vs 36 µg/L)
4
ALost Lake
Sawyer County, Wisconsin · 3.1 mi from Green Lake
- +Higher grade (B → A)
- ++21 ft water clarity
- +Lower phosphorus (18 vs 36 µg/L)
5
AGrindstone Lake
Sawyer County, Wisconsin · 3.8 mi from Green Lake
- +Higher grade (B → A)
- ++45.6 ft water clarity
- +Lower phosphorus (14.4 vs 36 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.