Little St Germain Lake-South Bay-Nr St Germain
Little St Germain Lake-South Bay-Nr St Germain in Vilas County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Maximum depth: 53 ft. Surface area: 972 acres.
- Max depth
- 53 ft
- Area
- 972 acres
- Trend
- ↓ Declining
- Public access
- Yes
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Why Little St Germain Lake-South Bay-Nr St Germain has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Little St Germain Lake-South Bay-Nr St Germain, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by WI DNR and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Little St Germain Lake-South Bay-Nr St Germain is a 972-acre lake in Vilas County, Wisconsin with a maximum depth of 53 feet. Overall water quality is declining over recent sampling years. The lake supports 6 documented fish species including Musky, Panfish, and Largemouth Bass. Public access is available.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2020-01-14. Grade methodology: LakeQuality methodology.
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Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Compare the safest swimming lakes near Eagle River →
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Water quality measurements for Little St Germain Lake-South Bay-Nr St Germain
These readings exist but are not enough for an A–F grade — see why.
No clarity data.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples |
Where to stay near Little St Germain Lake-South Bay-Nr St Germain
Compare lakeside cabins, hotels, and vacation rentals near Little St Germain Lake-South Bay-Nr St Germain in Vilas County, Wisconsin — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
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Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 53 ft |
| Surface Area | 972 acres |
| Public Access | Yes |
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Little St Germain Lake-South Bay-Nr St Germain
- → Little St Germain Lake-South Bay-Nr St Germain fishing forecast & best times (species outlook + 14-day solunar calendar)
- → Little St Germain Lake-South Bay-Nr St Germain fishing regulations (limits, seasons, special rules)
- → Is it safe to eat fish from Little St Germain Lake-South Bay-Nr St Germain? (mercury & PFAS guide)
Invasive & Introduced Species
Red chips are ecologically harmful invasive species. Gray chips are stocked or introduced fish that aren't a current ecological concern.
Water Quality Trend: ↓ Declining
Based on 7 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.357 m/yr | 6 |
| Phosphorus | → Stable | -0.01 µg/L/yr | 7 |
EPA Impairment Status
Little St Germain Lake-South Bay-Nr St Germain is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit WI8128746 · Official waterbody report · Matched by proximity (1.85 km)
Graded lakes near Little St Germain Lake-South Bay-Nr St Germain
Little St Germain Lake-South Bay-Nr St Germain has no grade, but these lakes within a short drive do.
Nearby Lakes in Vilas County
Frequently asked questions about Little St Germain Lake-South Bay-Nr St Germain
Where is Little St Germain Lake-South Bay-Nr St Germain?
- Little St Germain Lake-South Bay-Nr St Germain is a lake in Vilas County, Wisconsin. LakeQuality has not rated this lake (UNRATED) — there is not enough recent sampling to assign a letter.
What is the water quality grade for Little St Germain Lake-South Bay-Nr St Germain?
- Little St Germain Lake-South Bay-Nr St Germain in Vilas County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Maximum depth: 53 ft. Surface area: 972 acres.
Is Little St Germain Lake-South Bay-Nr St Germain safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Little St Germain Lake-South Bay-Nr St Germain is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
How deep is Little St Germain Lake-South Bay-Nr St Germain?
- Little St Germain Lake-South Bay-Nr St Germain has a maximum depth of 53 feet. The lake covers 972 acres.
What fish are in Little St Germain Lake-South Bay-Nr St Germain?
- Fish species found in Little St Germain Lake-South Bay-Nr St Germain include Musky, Panfish, Largemouth Bass, Smallmouth Bass, Northern Pike, Walleye. Little St Germain Lake-South Bay-Nr St Germain is located in Vilas County, Wisconsin.
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Where this data comes from
2 measurements from 1 monitoring station, 2020. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- USGS Wisconsin Water Science Center
USGS-WI2 samples · 2020
Monitoring station identifiers (1)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database
Lake size & watershed from HydroLAKES (HydroSHEDS)
Fish and recreation data from Wisconsin DNR Lakes