South Twin Lake
LaGrange County, Indiana116 acresView mapDirections
IDEM publishes the water-quality measurements for South Twin Lake. Here is what has been measured.
- 50 ft max depth
- Limited data
South Twin Lake in LaGrange County, Indiana has water-quality measurements published by IDEM, shown here as reported. Phosphorus: 29.9 µg/L. Chlorophyll-a (algae): 4.1 µg/L. Maximum depth: 49.9 ft. Surface area: 116 acres.
South Twin Lake is a 116-acre lake in LaGrange County, Indiana with a maximum depth of 50 feet (31-foot average).
Source: EPA Water Quality Portal sampling records, IDEM, last sampled 2024-07-01. Methodology: how these readings are compared.
What South Twin Lake is good for
From access and monitoring records, not editorial picks.
- Deep water49.9 ft surveyed max depth
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether South Twin Lake is safe to swim in today is a call for the Indiana Department of Environmental Management and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for South Twin Lake
These are the measurements IDEM publishes for South Twin Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data. Phosphorus 29.9 µg/L. Chlorophyll-a 4.1 µg/L.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | No reading How deep a black-and-white disk stays visible from the surface. Higher is clearer. | |
| Total phosphorus | 29.9µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | 4.1µg/L | Measured, not scored The green pigment in algae — a direct measure of how much algae is in the water. |
Ask about South Twin Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
49.9 ft
Average depth
30.8 ft
Surface area
116 acres
Shoreline
1.7 mi
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Fishing South Twin Lake
Nearby Lakes in LaGrange County
Frequently asked questions about South Twin Lake
Where is South Twin Lake?
- South Twin Lake is a lake in LaGrange County, Indiana. Its water-quality measurements are published by IDEM and shown on this page as reported.
What is the water quality of South Twin Lake?
- South Twin Lake in LaGrange County, Indiana has water-quality measurements published by IDEM, shown here as reported. Phosphorus: 29.9 µg/L. Chlorophyll-a (algae): 4.1 µg/L. Maximum depth: 49.9 ft. Surface area: 116 acres.
Is South Twin Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is South Twin Lake?
- South Twin Lake has a maximum depth of 49.9 feet and an average depth of 30.8 feet. The lake covers 116 acres.
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Where this data comes from
Measurements for South Twin Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.