Skip to main content
LakeQuality

Pool on Lake St. Croix Downstream of I94 Bridge vs St. Croix 0.3 Mi. Downstream of I Lake

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

Pool on Lake St. Croix Downstream of I94 Bridge and St. Croix 0.3 Mi. Downstream of I Lake both received the same overall water quality grade of C (Fair). Both are in Washington County, Minnesota.

Both Pool on Lake St. Croix Downstream of I94 Bridge and St. Croix 0.3 Mi. Downstream of I 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: Pool on Lake St. Croix Downstream of I94 Bridge (C) and St. Croix 0.3 Mi. Downstream of I 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.

Murky, only visible to about 5 ft.

C

St. Croix 0.3 Mi. Downstream of I Lake

Washington County, Minnesota

Murky, only visible to about 6.1 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. Croix Downstream of I94 BridgeSt. Croix 0.3 Mi. Downstream of I Lake
Overall GradeC (Fair)C (Fair)
Water Clarity5 ft6.1 ft
Phosphorus39.5 µg/L34 µg/L
Chlorophyll-a (Algae)No dataNo data
Maximum Depth78 ft78 ft
Surface Area8.4K acres8.4K acres
Public AccessNoNo
Fish Species11
Trophic Stateeutrophiceutrophic

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 (Pool on Lake St. Croix Downstream of I94 Bridge: 5 ft, St. Croix 0.3 Mi. Downstream of I Lake: 6.1 ft) and what you want from the lake. Pool on Lake St. Croix Downstream of I94 Bridge matches its peer on species count.