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LakeQuality

L St Germain Lk Site K @ S. Bay Lake vs White Sand Lake Deep

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

White Sand Lake Deep has a higher water quality grade (A, Excellent) than L St Germain Lk Site K @ S. Bay Lake (B, Good). Both are in Vilas County, Wisconsin.

Both L St Germain Lk Site K @ S. Bay Lake and White Sand Lake Deep sit in Wisconsin. 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: L St Germain Lk Site K @ S. Bay Lake (B) and White Sand Lake Deep (A) 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.

B

No clarity data.

A

White Sand Lake Deep

Vilas County, Wisconsin

Crystal clear, you can see 18 ft down.

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.

MetricL St Germain Lk Site K @ S. Bay LakeWhite Sand Lake Deep
Overall GradeB (Good)A (Excellent)
Water ClarityNo data18 ft
Phosphorus27 µg/LNo data
Chlorophyll-a (Algae)No dataNo data
Maximum Depth53 ft63 ft
Surface Area972 acres1.2K acres
Public AccessUnknownUnknown
Fish Species00
Trophic Stateeutrophicoligotrophic

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

Verdict

White Sand Lake Deep wins on overall water quality with a Grade A versus L St Germain Lk Site K @ S. Bay Lake's Grade B. For fishing diversity, White Sand Lake Deep also leads with 0 species.