1
BKota Ray Dam Lake
Williams County, Wisconsin · 13.3 mi from Epping-Springbrook Dam-Deepest Lake
- +Two grade letters higher (D → B)
- ++2.8 ft water clarity
Cleaner Lakes Than Epping-Springbrook Dam-Deepest Lake
5 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Epping-Springbrook Dam-Deepest Lake carries a Grade D (Poor) water quality score. Within 30 miles, 5 lakes hold a higher grade. Kota Ray Dam Lake (Williams County, Grade B, 13.3 mi away) is the closest meaningful upgrade.
2
BBlacktail Dam Lake
Williams County, Wisconsin · 18.4 mi from Epping-Springbrook Dam-Deepest Lake
- +Two grade letters higher (D → B)
- ++2.3 ft water clarity
3
CGarlk1512dw Lake
McKenzie County, Wisconsin · 15.9 mi from Epping-Springbrook Dam-Deepest Lake
- +Higher grade (D → C)
4
CTrenton Lake
Williams County, Wisconsin · 22.8 mi from Epping-Springbrook Dam-Deepest Lake
- +Higher grade (D → C)
5
CMcleod Reservoir
Williams County, Wisconsin · 13.2 mi from Epping-Springbrook Dam-Deepest Lake
- +Higher grade (D → C)
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.