1
BNorth Lindstrom Lake
Chisago County, Minnesota · 1.6 mi from Wallmark Lake
- +Two grade letters higher (F → B)
- ++5.6 ft water clarity
- +Lower phosphorus (18 vs 115 µg/L)
Cleaner Lakes Than Wallmark Lake
5 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Wallmark Lake carries a Grade F (Very Poor) water quality score. Within 30 miles, 5 lakes hold a higher grade. North Lindstrom Lake (Chisago County, Grade B, 1.6 mi away) is the closest meaningful upgrade.
2
BSchool Lake
Chisago County, Minnesota · 0.9 mi from Wallmark Lake
- +Two grade letters higher (F → B)
- ++6.3 ft water clarity
- +Lower phosphorus (20 vs 115 µg/L)
3
BMattson Lake
Chisago County, Minnesota · 1 mi from Wallmark Lake
- +Two grade letters higher (F → B)
- ++2.3 ft water clarity
- +Lower phosphorus (16 vs 115 µg/L)
4
BSouth Lindstrom Lake
Chisago County, Minnesota · 1.4 mi from Wallmark Lake
- +Two grade letters higher (F → B)
- ++3.6 ft water clarity
- +Lower phosphorus (28 vs 115 µg/L)
5
CGreen Lake
Chisago County, Minnesota · 2.3 mi from Wallmark Lake
- +Two grade letters higher (F → C)
- ++4.4 ft water clarity
- +Lower phosphorus (26 vs 115 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.