1
AKrohns Lake
Kewaunee County, Wisconsin · 7.7 mi from Forestville Millpond
- +Two grade letters higher (D → A)
- ++16.4 ft water clarity
- +Lower phosphorus (11.6 vs 94.3 µg/L)
Cleaner Lakes Than Forestville Millpond
5 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Forestville Millpond carries a Grade D (Poor) water quality score. Within 30 miles, 5 lakes hold a higher grade. Krohns Lake (Kewaunee County, Grade A, 7.7 mi away) is the closest meaningful upgrade.
2
AEast Alaska Lake
Kewaunee County, Wisconsin · 10.1 mi from Forestville Millpond
- +Two grade letters higher (D → A)
- ++18.9 ft water clarity
- +Lower phosphorus (16.4 vs 94.3 µg/L)
3
AWest Alaska Lake
Kewaunee County, Wisconsin · 10.6 mi from Forestville Millpond
- +Two grade letters higher (D → A)
- ++18.1 ft water clarity
- +Lower phosphorus (14.1 vs 94.3 µg/L)
4
AClark Lake
Door County, Wisconsin · 21.8 mi from Forestville Millpond
- +Two grade letters higher (D → A)
- ++31.2 ft water clarity
- +Lower phosphorus (10.5 vs 94.3 µg/L)
5
BDunes Lake
Door County, Wisconsin · 16.5 mi from Forestville Millpond
- +Two grade letters higher (D → B)
- ++3.3 ft water clarity
- +Lower phosphorus (21.2 vs 94.3 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.