Stwinesh Lake
Lake County, FloridaView mapDirections
Florida DEP publishes the water-quality measurements for Stwinesh Lake. Here is what has been measured.
- 28 ft max depth
- Limited data
Stwinesh Lake in Lake County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Phosphorus: 31.8 µg/L.
Stwinesh Lake is a lake in Lake County, Florida with an estimated average depth of about 28 feet.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-04-30. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Stwinesh Lake is safe to swim in today is a call for the Florida Department of Environmental Protection and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Stwinesh Lake
These are the measurements Florida DEP publishes for Stwinesh 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 31.8 µg/L. TSI 54.
| 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 | 31.8µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 54 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Stwinesh Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Stwinesh Lake typically sits around 62°F at the surface in January. Summer average is about 87°F. Usually warmest in Jun (about 87°F) and coldest in Jan (about 62°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (62°F) to its warmest (87°F).
Typical surface water temperature by month, from 12 field readings (2011–2025) via the EPA Water Quality Portal. See the full Stwinesh Lake water temperature breakdown →
Lake Details
Max depth
~28 ft est.
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Florida has not published bathymetry for Stwinesh Lake.
Lake Size & Watershed
Watershed (drainage) area
8 sq mi
HydroLAKES / HydroSHEDS
Surface area
82 acres
HydroLAKES / HydroSHEDS
Shoreline
1.4 mi
HydroLAKES / HydroSHEDS
Elevation
62 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth here is modelled, not surveyed — HydroLAKES v1.0 estimates lake depth from surrounding terrain rather than from soundings. Treat it as an approximation, and prefer a state bathymetric survey where one exists.
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Frequently asked questions about Stwinesh Lake
Where is Stwinesh Lake?
- Stwinesh Lake is a lake in Lake County, Florida. Its water-quality measurements are published by Florida DEP and shown on this page as reported.
What is the water quality of Stwinesh Lake?
- Stwinesh Lake in Lake County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Phosphorus: 31.8 µg/L.
Is Stwinesh Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
What is the water temperature of Stwinesh Lake?
- Stwinesh Lake typically sits around 62°F at the surface in January, from 12 EPA Water Quality Portal field readings (2011–2025). That is a typical value for the month, not a live reading.
How deep is Stwinesh Lake?
- No published bathymetric survey covers Stwinesh Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 28 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.
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Where this data comes from
5 measurements from 1 monitoring station, 2023–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Submitting organization not recorded for these samples5 samples · 2023–2025
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.
Other records on this page
Lake size & watershed from HydroLAKES (HydroSHEDS)