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LakeQuality

L St Germain Lk Site K @ S. Bay Lake vs Little St. Germain Lake-West Bay-at St. Germain

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

L St Germain Lk Site K @ S. Bay Lake has a higher water quality grade (B, Good) than Little St. Germain Lake-West Bay-at St. Germain (F, Very Poor). Both are in Vilas County, Wisconsin.

Both L St Germain Lk Site K @ S. Bay Lake and Little St. Germain Lake-West Bay-at St. Germain 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 meaningfully apart: L St Germain Lk Site K @ S. Bay Lake grades a B while Little St. Germain Lake-West Bay-at St. Germain grades a F. That two-letter spread reflects real underlying differences — different watershed inputs, different depth profiles, or different monitoring rigor.

For a recreational visitor, the wider grade gap is decisive — L St Germain Lk Site K @ S. Bay Lake is the better water-quality choice. For a researcher, the gap is the interesting part: what is different about the two watersheds, and which of those differences is mutable?

B

No clarity data.

No clarity data.

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 LakeLittle St. Germain Lake-West Bay-at St. Germain
Overall GradeB (Good)F (Very Poor)
Water ClarityNo dataNo data
Phosphorus27 µg/L238 µg/L
Chlorophyll-a (Algae)No dataNo data
Maximum Depth53 ft53 ft
Surface Area972 acres972 acres
Public AccessUnknownUnknown
Fish Species00
Trophic Stateeutrophichypereutrophic

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

Verdict

L St Germain Lk Site K @ S. Bay Lake wins on overall water quality with a Grade B versus Little St. Germain Lake-West Bay-at St. Germain's Grade F. For fishing diversity, L St Germain Lk Site K @ S. Bay Lake also leads with 0 species.