1
ADutch Hollow Lake
Sauk County, Wisconsin · 5 mi from Lake Redstone
- +Two grade letters higher (C → A)
- ++41.9 ft water clarity
- +Lower phosphorus (13.1 vs 89 µg/L)
Cleaner Lakes Than Lake Redstone
5 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Lake Redstone carries a Grade C (Fair) water quality score. Within 30 miles, 5 lakes hold a higher grade. Dutch Hollow Lake (Sauk County, Grade A, 5 mi away) is the closest meaningful upgrade.
2
AFawn Lake
Adams County, Wisconsin · 16.2 mi from Lake Redstone
- +Two grade letters higher (C → A)
- ++23.9 ft water clarity
- +Lower phosphorus (20.4 vs 89 µg/L)
3
AWhite Mound Lake
Sauk County, Wisconsin · 16.7 mi from Lake Redstone
- +Two grade letters higher (C → A)
- ++9.1 ft water clarity
- +Lower phosphorus (28.4 vs 89 µg/L)
4
BEaston Lake
Adams County, Wisconsin · 21.8 mi from Lake Redstone
- +Higher grade (C → B)
- ++18.9 ft water clarity
- +Lower phosphorus (45.5 vs 89 µg/L)
5
BMirror Lake
Sauk County, Wisconsin · 13.5 mi from Lake Redstone
- +Higher grade (C → B)
- ++8.3 ft water clarity
- +Lower phosphorus (65.4 vs 89 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.