Umatillasesh Lake
Lake County, FloridaView mapDirections
Florida DEP publishes the water-quality measurements for Umatillasesh Lake. Here is what has been measured.
- Limited data
Umatillasesh Lake in Lake County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 2.5 ft visibility. Phosphorus: 40.6 µg/L.
Umatillasesh Lake is a lake in Lake County, Florida. Overall water quality is improving over recent sampling years.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-04-29. 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 Umatillasesh 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 Umatillasesh Lake
These are the measurements Florida DEP publishes for Umatillasesh Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Very murky, less than 2.5 ft of visibility. Phosphorus 40.6 µg/L. TSI 61.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 2.5ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 40.6µg/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. | 61 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Umatillasesh Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Umatillasesh Lake typically sits around 68°F at the surface in November. Usually warmest in Apr (about 78°F) and coldest in Jan (about 61°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (61°F) to its warmest (78°F).
Typical surface water temperature by month, from 15 field readings (2010–2025) via the EPA Water Quality Portal. See the full Umatillasesh Lake water temperature breakdown →
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Stays near Umatillasesh Lake
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Fishing Umatillasesh Lake
Water Quality Trend: Improving
Based on 4 years of monitoring (2020–2024).
Water clarity
Stable4 years
Phosphorus
Improving-1.29 µg/L/yr4 years
Nearby Lakes in Lake County
Frequently asked questions about Umatillasesh Lake
Where is Umatillasesh Lake?
- Umatillasesh 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 Umatillasesh Lake?
- Umatillasesh Lake in Lake County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 2.5 ft visibility. Phosphorus: 40.6 µg/L.
Is Umatillasesh 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 Umatillasesh Lake?
- Umatillasesh Lake typically sits around 68°F at the surface in November, from 15 EPA Water Quality Portal field readings (2010–2025). That is a typical value for the month, not a live reading.
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Where this data comes from
10 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 samples10 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.