1
BEast Twin Lake
Anoka County, Minnesota · 4.5 mi from Lower Orono Lake
- +Two grade letters higher (F → B)
- ++8.4 ft water clarity
- +Lower phosphorus (18.5 vs 156 µg/L)
Cleaner Lakes Than Lower Orono Lake
2 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Lower Orono Lake carries a Grade F (Very Poor) water quality score. Within 30 miles, 2 lakes hold a higher grade. East Twin Lake (Anoka County, Grade B, 4.5 mi away) is the closest meaningful upgrade.
2
CBirch Lake
Sherburne County, Minnesota · 6.3 mi from Lower Orono Lake
- +Two grade letters higher (F → C)
- ++3.5 ft water clarity
- +Lower phosphorus (21 vs 156 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.