Highlands-Viola Lake
Highlands County, FloridaView mapDirections
Florida DEP publishes the water-quality measurements for Highlands-Viola Lake. Here is what has been measured.
- Mesotrophic
Highlands-Viola Lake in Highlands County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 6.8 ft visibility. Phosphorus: 12 µg/L.
Highlands-Viola Lake is a mesotrophic lake in Highlands County, Florida. Overall water quality is declining over recent sampling years. Compared to the 72 other monitored lakes in Highlands County, Highlands-Viola Lake ranks #40 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2024-09-24. 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. Check local advisories before you swim.
Whether Highlands-Viola 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 Highlands-Viola Lake
These are the measurements Florida DEP publishes for Highlands-Viola 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 6.8 ft. Phosphorus 12 µg/L. TSI 45.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 6.8ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 12µg/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. | 45 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
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Fishing Highlands-Viola Lake
Water Quality Trend: Worsening
Based on 5 years of monitoring (2020–2024).
Water clarity
Worsening5 years
Phosphorus
Worsening+1.6 µg/L/yr5 years
Nearby Lakes in Highlands County
Frequently asked questions about Highlands-Viola Lake
Where is Highlands-Viola Lake?
- Highlands-Viola Lake is a lake in Highlands County, Florida. Its water-quality measurements are published by Florida DEP and shown on this page as reported.
What is the water quality of Highlands-Viola Lake?
- Highlands-Viola Lake in Highlands County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 6.8 ft visibility. Phosphorus: 12 µg/L.
Is Highlands-Viola Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
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Mesotrophic Lakes in Florida
Where this data comes from
39 measurements from 3 monitoring stations, 2020–2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- FLORIDA LAKEWATCH
21FLKWAT_WQX39 samples · 2020–2024
Monitoring station identifiers (3)
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.