1
BRiley Lake
Hennepin County, Minnesota · 1.7 mi from Susan Lake
- +Two grade letters higher (D → B)
- ++10.1 ft water clarity
- +Lower phosphorus (20 vs 82 µg/L)
Cleaner Lakes Than Susan Lake
5 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Susan Lake carries a Grade D (Poor) water quality score. Within 30 miles, 5 lakes hold a higher grade. Riley Lake (Hennepin County, Grade B, 1.7 mi away) is the closest meaningful upgrade.
2
BAnn Lake
Carver County, Minnesota · 1.6 mi from Susan Lake
- +Two grade letters higher (D → B)
- ++6.7 ft water clarity
- +Lower phosphorus (28 vs 82 µg/L)
3
CRound Lake
Hennepin County, Minnesota · 2.7 mi from Susan Lake
- +Higher grade (D → C)
- ++4.9 ft water clarity
- +Lower phosphorus (28 vs 82 µg/L)
4
CRice Marsh Lake
Hennepin County, Minnesota · 1.3 mi from Susan Lake
- +Higher grade (D → C)
- ++5.2 ft water clarity
- +Lower phosphorus (34 vs 82 µg/L)
5
CLotus Lake
Carver County, Minnesota · 1.4 mi from Susan Lake
- +Higher grade (D → C)
- ++1.8 ft water clarity
- +Lower phosphorus (42 vs 82 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.