Wio Lake
Volusia County, FloridaView mapDirections
Florida DEP publishes the water-quality measurements for Wio Lake. Here is what has been measured.
- Mesotrophic
- Impaired · pH / acidity
Wio Lake in Volusia County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 7.1 ft visibility. Phosphorus: 20 µg/L.
Wio Lake is a mesotrophic lake in Volusia County, Florida. Overall water quality is declining over recent sampling years. Compared to the 29 other monitored lakes in Volusia County, Wio Lake ranks #11 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-02-20. Methodology: how these readings are compared.
Swimming conditions
Readings onlyLow algae
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.
Nutrient and algae readings are not a swimming clearance. Wio Lake is listed impaired under Clean Water Act §303(d) (IR 4C) for pH / acidity. Check local advisories before you swim.
Whether Wio 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 Wio Lake
These are the measurements Florida DEP publishes for Wio Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Moderate clarity, visible to about 7.1 ft. Phosphorus 20 µg/L. TSI 48.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 7.1ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 20µg/L | Good 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. | 48 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
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Answers come straight from the public measurements and survey records on this page.
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Stays near Wio Lake
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Fishing Wio Lake
Water Quality Trend: Worsening
Based on 5 years of monitoring (2020–2024).
Water clarity
Stable5 years
Phosphorus
Worsening+1.28 µg/L/yr5 years
EPA Impairment Status
Wio Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 4C).
Causes of impairment
Designated uses not supporting: Aquatic life.
Source: EPA ATTAINS assessment unit FL2659A · Official waterbody report
Nearby Lakes in Volusia County
Frequently asked questions about Wio Lake
Where is Wio Lake?
- Wio Lake is a lake in Volusia County, Florida. Its water-quality measurements are published by Florida DEP and shown on this page as reported.
What is the water quality of Wio Lake?
- Wio Lake in Volusia County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 7.1 ft visibility. Phosphorus: 20 µg/L.
Is Wio Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Wio Lake is listed impaired under Clean Water Act §303(d) (IR 4C) for pH / acidity. Check local advisories before you swim.
Explore Wio Lake across LakeQuality
Planning a trip around Fort Matanzas?
Wio Lake is about 37 miles from Fort Matanzas National Monument. Crowds there swing hard by season, so the month you pick changes both how busy the park is and what lodging costs.
Best time to visit Fort Matanzas →More lakes in Florida
Other Lakes in Florida
Mesotrophic Lakes in Florida
Where this data comes from
82 measurements from 1 monitoring station, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- St. Johns River Water Management District
21FLSJWM_WQX82 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