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LakeQuality

St. Croix 1.5 Mi. Upstream of Point Douglas Dr Lake vs St. Croix Lake

Water quality, depth, fish species, and recreation comparison.

St. Croix 1.5 Mi. Upstream of Point Douglas Dr Lake and St. Croix Lake both received the same overall water quality grade of C (Fair). Both are in Washington County, Minnesota.

Both St. Croix 1.5 Mi. Upstream of Point Douglas Dr Lake and St. Croix Lake sit in Minnesota. A same-state comparison strips out the state-level water-quality regime as a variable: any grade differences here are about the lakes themselves, not the agencies grading them. The grades are close: St. Croix 1.5 Mi. Upstream of Point Douglas Dr Lake (C) and St. Croix Lake (C) are within one letter of each other on the LakeGrade rubric. The per-parameter sub-grades below will show where the small differences actually live.

With grades this close, the choice between the two lakes turns on non-water-quality factors: depth, fish species, public access, distance from home. The per-lake pages below cover all of those.

Moderate clarity, visible to about 9.4 ft.

C

St. Croix Lake

Washington County, Minnesota

Moderate clarity, visible to about 8.7 ft.

Side-by-Side Metrics

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

MetricSt. Croix 1.5 Mi. Upstream of Point Douglas Dr LakeSt. Croix Lake
Overall GradeC (Fair)C (Fair)
Water Clarity9.4 ft8.7 ft
Phosphorus30 µg/LNo data
Chlorophyll-a (Algae)No dataNo data
Maximum Depth78 ft78 ft
Surface Area8.4K acres8.4K acres
Public AccessNoNo
Fish Species11
Trophic Statemesotrophicmesotrophic

Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).

Verdict

Both lakes earn the same Grade C. The tiebreakers come down to clarity (St. Croix 1.5 Mi. Upstream of Point Douglas Dr Lake: 9.4 ft, St. Croix Lake: 8.7 ft) and what you want from the lake. St. Croix 1.5 Mi. Upstream of Point Douglas Dr Lake matches its peer on species count.