Highlands-Viola Lake
Highlands-Viola Lake in Highlands County, Florida has a water quality grade of B (Good). Water clarity: 6.8 ft visibility. Phosphorus: 12 µg/L.
- Clarity
- 6.8 ft
- Type
- Mesotrophic
- Trend
- ↓ Declining
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Highlands-Viola Lake is a mesotrophic lake in Highlands County, Florida. Water quality is graded B based on 1 sampling years through 2024. 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. Grade methodology: LakeQuality methodology.
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Swimming Safety
Grade onlyLow algae
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Good for swimming, clear water with low algae levels
Water Quality Grade: B (Good)
Moderate clarity, visible to about 6.8 ft. Phosphorus level: 12 µg/L. Trophic State Index: 45.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 6.8 ft | Not graded |
| Phosphorus | 12 µg/L | Good |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 45 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Highlands-Viola Lake
Compare lakeside cabins, hotels, and vacation rentals near Highlands-Viola Lake in Highlands 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.
Top-rated places to stay near Highlands-Viola Lake
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Fishing Highlands-Viola Lake
Water Quality Trend: ↓ Declining
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.775 m/yr | 5 |
| Phosphorus | ↓ Declining | +1.6 µg/L/yr | 5 |
County Ranking
Ranked #40 of 73 lakes in Highlands County
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. LakeQuality grades it B for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Highlands-Viola Lake?
- Highlands-Viola Lake in Highlands County, Florida has a water quality grade of B (Good). Water clarity: 6.8 ft visibility. Phosphorus: 12 µg/L.
Is Highlands-Viola Lake safe to swim in?
- Good for swimming, clear water with low algae levels. Highlands-Viola Lake has a water quality grade of B (Good). Always check local health department advisories before swimming.
Explore Highlands-Viola Lake across LakeQuality
More Florida Lake Rankings
Other Grade B Lakes in Florida
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)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.