Stwinesh Lake
Stwinesh Lake in Lake County, Florida is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 31.8 µg/L.
- Typical in June
- 87°F
- Max depth
- ~28 ft est.
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Why Stwinesh 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 Stwinesh Lake, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). Sampling here has recorded phosphorus, but not water clarity 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 FDEP and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
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. 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 Stwinesh Lake
These readings exist but are not enough for an A–F grade — see why.
No clarity data. Phosphorus level: 31.8 µg/L. Trophic State Index: 54.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 31.8 µg/L | Not graded |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 54 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Stwinesh Lake
Compare lakeside cabins, hotels, and vacation rentals near Stwinesh Lake in Lake County, Florida — 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 Stwinesh Lake
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Water Temperature
Stwinesh Lake typically sits around 87°F at the surface in June. 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.
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
| Characteristic | Value |
|---|---|
| Maximum Depth | ~28 ft est. |
| Average Depth | ~13 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
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.
Fishing Stwinesh Lake
Nearby Lakes in Lake County
Frequently asked questions about Stwinesh Lake
Where is Stwinesh Lake?
- Stwinesh Lake is a lake in Lake County, Florida. LakeQuality has not rated this lake (UNRATED) — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
What is the water quality grade for Stwinesh Lake?
- Stwinesh Lake in Lake County, Florida is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 31.8 µg/L.
Is Stwinesh Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Stwinesh 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 is the water temperature of Stwinesh Lake?
- Stwinesh Lake typically sits around 87°F at the surface in June, 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)
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
Lake size & watershed from HydroLAKES (HydroSHEDS)