Lake Eola
Orange County, FloridaView mapDirections
Florida DEP publishes the water-quality measurements for Lake Eola. Here is what has been measured.
- Eutrophic
- Impaired · Algal growth
- Limited data
Lake Eola in Orange County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 2.9 ft visibility. Phosphorus: 48 µg/L.
Lake Eola is a productive, nutrient-rich eutrophic lake in Orange County, Florida. Water clarity is declining over recent sampling years. Compared to the 319 other monitored lakes in Orange County, Lake Eola ranks #275 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-02-18. Methodology: how these readings are compared.
Swimming conditions
Readings onlyRecreation use not supported
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Based on E. coli testing, Lake Eola frequently exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 16% of 25 samples across 6 seasons.
This is a historical summary of past testing, not a current condition — bacteria levels change quickly, especially after rain. Always check Florida’s current beach and health-department advisories before swimming.
Whether Lake Eola 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 Lake Eola
These are the measurements Florida DEP publishes for Lake Eola, 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 2.9 ft of visibility. Phosphorus 48 µg/L. TSI 61.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 2.9ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 48µg/L | Fair GoodFairPoor |
| 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 Lake Eola
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Lake Eola typically sits around 77°F at the surface in October. Summer average is about 86°F. Usually warmest in Jul (about 86°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 (86°F).
Typical surface water temperature by month, from 132 field readings (2010–2025) via the EPA Water Quality Portal. See the full Lake Eola water temperature breakdown →
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Stays near Lake Eola
Compare lakeside cabins, hotels, and vacation rentals near Lake Eola in Orange 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.
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Fishing Lake Eola
Water Quality Trend: Stable
Based on 6 years of monitoring (2020–2025).
Water clarity
Worsening6 years
Phosphorus
Improving-2.69 µg/L/yr6 years
EPA Impairment Status
Lake Eola is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
Designated uses not supporting: Aquatic life, Recreation.
Source: EPA ATTAINS assessment unit FL3168Y9 · Official waterbody report
Nearby Lakes in Orange County
Frequently asked questions about Lake Eola
Where is Lake Eola?
- Lake Eola is a lake in Orange County, Florida. Its water-quality measurements are published by Florida DEP and shown on this page as reported.
What is the water quality of Lake Eola?
- Lake Eola in Orange County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 2.9 ft visibility. Phosphorus: 48 µg/L.
Is Lake Eola safe to swim in?
- Based on E. coli testing, Lake Eola frequently exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 16% of 25 samples across 6 seasons. That is a historical summary of past bacteria testing, not a current reading and not a swimming clearance. Bacteria levels can spike quickly after heavy rain, so whether Lake Eola is safe to swim in today is a call for Florida's water agency and the county health department; check their current beach advisories before you swim.
What is the water temperature of Lake Eola?
- Lake Eola typically sits around 77°F at the surface in October, from 132 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
35 measurements from 1 monitoring station, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Submitting organization not recorded for these samples35 samples · 2020–2025
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
Impairment status from EPA ATTAINS 303(d) database