1
BLake Nehai Tonkayea
Chariton County, Wisconsin · 7.5 mi from Marceline City Lake New Nr. Dam
- +Higher grade (C → B)
- ++4.5 ft water clarity
- +Lower phosphorus (10 vs 45.7 µg/L)
Cleaner Lakes Than Marceline City Lake New Nr. Dam
3 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Marceline City Lake New Nr. Dam carries a Grade C (Fair) water quality score. Within 30 miles, 3 lakes hold a higher grade. Lake Nehai Tonkayea (Chariton County, Grade B, 7.5 mi away) is the closest meaningful upgrade.
2
BBrookfield Lake
Linn County, Wisconsin · 9.4 mi from Marceline City Lake New Nr. Dam
- +Higher grade (C → B)
- +Lower phosphorus (19.7 vs 45.7 µg/L)
3
CJo Shelby Lake
Linn County, Wisconsin · 17.8 mi from Marceline City Lake New Nr. Dam
- +Higher overall water quality score
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.