1
ATerra Park Lake
Polk County, Wisconsin · 11.2 mi from Fort des Moines Park Pond
- +Two grade letters higher (F → A)
- ++8.7 ft water clarity
Cleaner Lakes Than Fort des Moines Park Pond
5 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Fort des Moines Park Pond carries a Grade F (Very Poor) water quality score. Within 30 miles, 5 lakes hold a higher grade. Terra Park Lake (Polk County, Grade A, 11.2 mi away) is the closest meaningful upgrade.
2
BDale Maffitt Reservoir
Dallas County, Wisconsin · 9.4 mi from Fort des Moines Park Pond
- +Two grade letters higher (F → B)
- ++7 ft water clarity
3
CLake Petocka
Polk County, Wisconsin · 15.7 mi from Fort des Moines Park Pond
- +Two grade letters higher (F → C)
4
DThomas Mitchell Lake
Polk County, Wisconsin · 14.5 mi from Fort des Moines Park Pond
- +Higher grade (F → D)
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.