1
BKelly Lake
Rice County, Minnesota · 2.2 mi from Roberds Lake
- +Two grade letters higher (F → B)
- ++6.2 ft water clarity
- +Lower phosphorus (29 vs 300 µg/L)
Cleaner Lakes Than Roberds Lake
5 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Roberds Lake carries a Grade F (Very Poor) water quality score. Within 30 miles, 5 lakes hold a higher grade. Kelly Lake (Rice County, Grade B, 2.2 mi away) is the closest meaningful upgrade.
2
CDudley Lake
Rice County, Minnesota · 2.2 mi from Roberds Lake
- +Two grade letters higher (F → C)
- ++7 ft water clarity
- +Lower phosphorus (47 vs 300 µg/L)
3
DMazaska Lake
Rice County, Minnesota · 3.9 mi from Roberds Lake
- +Higher grade (F → D)
- +Lower phosphorus (49 vs 300 µg/L)
4
DCedar Lake
Rice County, Minnesota · 4.4 mi from Roberds Lake
- +Higher grade (F → D)
- +Lower phosphorus (83 vs 300 µg/L)
5
DFox Lake
Rice County, Minnesota · 4.7 mi from Roberds Lake
- +Higher grade (F → D)
- +Lower phosphorus (66 vs 300 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.