Pasco-Big Vienna Lake
Pasco County, FloridaView mapDirections
Florida DEP publishes the water-quality measurements for Pasco-Big Vienna Lake. Here is what has been measured.
- Eutrophic
- Limited data
Pasco-Big Vienna Lake in Pasco County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 4.4 ft visibility. Phosphorus: 26 µg/L.
Pasco-Big Vienna Lake is a productive, nutrient-rich eutrophic lake in Pasco County, Florida. Overall water quality is declining over recent sampling years. Compared to the 14 other monitored lakes in Pasco County, Pasco-Big Vienna Lake ranks #5 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2021-08-08. Methodology: how these readings are compared.
Swimming conditions
Readings onlyLimited data
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 Pasco-Big Vienna 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 Pasco-Big Vienna Lake
These are the measurements Florida DEP publishes for Pasco-Big Vienna Lake, 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 4.4 ft. Phosphorus 26 µg/L. TSI 53.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 4.4ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 26µg/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. | 53 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Pasco-Big Vienna Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Pasco-Big Vienna Lake typically sits around 80°F at the surface in October. Summer average is about 86°F. Usually warmest in Aug (about 86°F) and coldest in Feb (about 64°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (64°F) to its warmest (86°F).
Typical surface water temperature by month, from 65 field readings (2010–2019) via the EPA Water Quality Portal. See the full Pasco-Big Vienna Lake water temperature breakdown →
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Stays near Pasco-Big Vienna Lake
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Fishing Pasco-Big Vienna Lake
Water Quality Trend: Worsening
Based on 5 years of monitoring (2020–2024).
Water clarity
Worsening5 years
Phosphorus
Stable-0.4 µg/L/yr5 years
Nearby Lakes in Pasco County
Frequently asked questions about Pasco-Big Vienna Lake
Where is Pasco-Big Vienna Lake?
- Pasco-Big Vienna Lake is a lake in Pasco County, Florida. Its water-quality measurements are published by Florida DEP and shown on this page as reported.
What is the water quality of Pasco-Big Vienna Lake?
- Pasco-Big Vienna Lake in Pasco County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 4.4 ft visibility. Phosphorus: 26 µg/L.
Is Pasco-Big Vienna Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
What is the water temperature of Pasco-Big Vienna Lake?
- Pasco-Big Vienna Lake typically sits around 80°F at the surface in October, from 65 EPA Water Quality Portal field readings (2010–2019). That is a typical value for the month, not a live reading.
Explore Pasco-Big Vienna Lake across LakeQuality
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Where this data comes from
18 measurements from 3 monitoring stations, 2021. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- FLORIDA LAKEWATCH
21FLKWAT_WQX18 samples · 2021
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.