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LakeQuality

Birch Lake vs South Turtle Lake

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

Birch Lake and South Turtle Lake both received the same overall water quality grade of A (Excellent). Both are in Vilas County, Wisconsin.

A

Birch Lake

Vilas County, Wisconsin

Crystal clear, you can see 21.3 ft down.

A

South Turtle Lake

Vilas County, Wisconsin

Crystal clear, you can see 26.2 ft down.

Side-by-Side Metrics

MetricBirch LakeSouth Turtle Lake
Overall GradeA (Excellent)A (Excellent)
Water Clarity21.3 ft26.2 ft
Phosphorus16.6 µg/L17.4 µg/L
Chlorophyll-a (Algae)No dataNo data
Maximum Depth45 ft40 ft
Surface Area506 acres466 acres
Public AccessYesYes
Fish Species66
Trophic Stateoligotrophicoligotrophic

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

Verdict

Both lakes earn the same Grade A. The tiebreakers come down to clarity (Birch Lake: 21.3 ft, South Turtle Lake: 26.2 ft) and what you want from the lake. Birch Lake matches its peer on species count.