Lake Conway
Orange County, FloridaView mapDirections
Florida DEP publishes the water-quality measurements for Lake Conway. Here is what has been measured.
- Impaired · Mercury
- Limited data
Lake Conway in Orange County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 4.6 ft visibility. Phosphorus: 10 µg/L.
Lake Conway is a lake in Orange County, Florida. Overall water quality is improving over recent sampling years.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-02-17. Methodology: how these readings are compared.
Swimming conditions
No readingBacteria tested: exceedances
Based on E. coli testing, Lake Conway frequently exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 12.5% of 8 samples across 2 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 Conway 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 Conway
These are the measurements Florida DEP publishes for Lake Conway, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Murky, only visible to about 4.6 ft. Phosphorus 10 µg/L. TSI 46.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 4.6ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 10µg/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. | 46 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Lake Conway
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Lake Conway typically sits around 82°F at the surface in September. Summer average is about 86°F. Usually warmest in Aug (about 88°F) and coldest in Dec (about 66°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (66°F) to its warmest (88°F).
Typical surface water temperature by month, from 48 field readings (2010–2025) via the EPA Water Quality Portal. See the full Lake Conway water temperature breakdown →
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Stays near Lake Conway
Compare lakeside cabins, hotels, and vacation rentals near Lake Conway 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 Conway
Water Quality Trend: Improving
Based on 5 years of monitoring (2020–2024).
Water clarity
Improving5 years
Phosphorus
Stable-0.05 µg/L/yr5 years
EPA Impairment Status
Lake Conway is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 4A).
Causes of impairment
Designated uses not supporting: Fish consumption.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit FL3168A · Official waterbody report
Nearby Lakes in Orange County
Frequently asked questions about Lake Conway
Where is Lake Conway?
- Lake Conway 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 Conway?
- Lake Conway in Orange County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 4.6 ft visibility. Phosphorus: 10 µg/L.
Is Lake Conway safe to swim in?
- Based on E. coli testing, Lake Conway frequently exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 12.5% of 8 samples across 2 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 Conway 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 Conway?
- Lake Conway typically sits around 82°F at the surface in September, from 48 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
4 measurements from 2 monitoring stations, 2023–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Submitting organization not recorded for these samples4 samples · 2023–2025
Monitoring station identifiers (2)
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