1
BLake St. Croix
Washington County, Minnesota · 3 mi from St. Croix 1.5 Mi. Upstream of Point Douglas Dr Lake
- +Higher grade (C → B)
- +Lower phosphorus (18 vs 30 µg/L)
Cleaner Lakes Than St. Croix 1.5 Mi. Upstream of Point Douglas Dr Lake
2 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
St. Croix 1.5 Mi. Upstream of Point Douglas Dr Lake carries a Grade C (Fair) water quality score. Within 30 miles, 2 lakes hold a higher grade. Lake St. Croix (Washington County, Grade B, 3 mi away) is the closest meaningful upgrade.
2
CNorth Lake 2
Goodhue County, Minnesota · 8 mi from St. Croix 1.5 Mi. Upstream of Point Douglas Dr Lake
- +Higher overall water quality score
- ++114.1 ft water clarity
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.