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LakeQuality

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

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

St. Croix 1.5 Mi. Upstream of Point Douglas Dr Lake has a higher water quality grade (C, Fair) than Pool on Lake St. Croix (C, Fair). Both are in Washington County, Minnesota.

Pool on Lake St. Croix and St. Croix 1.5 Mi. Upstream of Point Douglas Dr Lake are both in Minnesota — a same-state head-to-head where the comparison comes down to lake-specific differences in depth, watershed, and monitoring history rather than the broader state-level water-quality regime. The grades are close: Pool on Lake St. Croix (C) and St. Croix 1.5 Mi. Upstream of Point Douglas Dr 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.

C

Pool on Lake St. Croix

Washington County, Minnesota

Murky, only visible to about 5.9 ft.

Moderate clarity, visible to about 9.4 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.

MetricPool on Lake St. CroixSt. Croix 1.5 Mi. Upstream of Point Douglas Dr Lake
Overall GradeC (Fair)C (Fair)
Water Clarity5.9 ft9.4 ft
Phosphorus32.9 µg/L30 µg/L
Chlorophyll-a (Algae)No dataNo data
Maximum Depth78 ft78 ft
Surface Area8.4K acres8.4K acres
Public AccessNoNo
Fish Species11
Trophic Stateeutrophicmesotrophic

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

Verdict

St. Croix 1.5 Mi. Upstream of Point Douglas Dr Lake wins on overall water quality with a Grade C versus Pool on Lake St. Croix's Grade C. Water clarity: 9.4 ft vs 5.9 ft. For fishing diversity, St. Croix 1.5 Mi. Upstream of Point Douglas Dr Lake also leads with 1 species.