South Lake
South Lake in Lenawee County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 9.8 ft visibility. Surface area: 75.9 acres.
- Clarity
- 9.8 ft
- Area
- 76 acres
- Public access
- Yes
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Why South Lake 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 South Lake, the only measurement available is water clarity, which is not a water-quality indicator on its own — EPA's National Lakes Assessment does not grade clarity. Sampling here has recorded water clarity, but not phosphorus and algae (chlorophyll-a).
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 EGLE and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
South Lake is a 76-acre lake in Lenawee County, Michigan. The lake supports 6 documented fish species including Golden redhorse, Golden shiner, and Green sunfish. Public access is available with 2 public boat landings.
Source: EPA Water Quality Portal sampling records, EGLE, last sampled 2019-09-16. 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
Water quality measurements for South Lake
These readings exist but are not enough for an A–F grade — see why.
Moderate clarity, visible to about 9.8 ft. Trophic State Index: 44.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 9.8 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 44 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near South Lake
Compare lakeside cabins, hotels, and vacation rentals near South Lake in Lenawee County, Michigan — 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.
Top-rated places to stay near South Lake
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 76 acres |
| Public Access | Yes |
No bathymetric survey has been published for South Lake, so its depth is not documented here.
Recreation & Access
Fish Species
Click a species to see every graded lake where it is documented.
Fishing South Lake
Graded lakes near South Lake
South Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Lenawee County
Frequently asked questions about South Lake
Where is South Lake?
- South Lake is a lake in Lenawee County, Michigan. LakeQuality has not rated this lake (UNRATED) — there is not enough recent sampling to assign a letter.
What is the water quality grade for South Lake?
- South Lake in Lenawee County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 9.8 ft visibility. Surface area: 75.9 acres.
Is South Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. South Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
What fish are in South Lake?
- Fish species found in South Lake include Golden redhorse, Golden shiner, Green sunfish, Lake herring, Pumpkinseed, Spotted gar. South Lake is located in Lenawee County, Michigan.
Are there boat ramps on South Lake?
- South Lake has 2 documented boat landings in the USGS National Boat Ramps inventory. Public access is listed as yes.
Explore South Lake across LakeQuality
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Where this data comes from
18 measurements from 1 monitoring station, 2019. Retrieved from the EPA Water Quality Portal on 2026-08-26.
Collected and reported by
- North American Lake Management Society
NALMS18 samples · 2019
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
Named boat-access points from the USGS National Boat Ramps inventory