St Lucie-Jeffery Lake
St. Lucie County, FloridaView mapDirections
Florida DEP publishes the water-quality measurements for St Lucie-Jeffery Lake. Here is what has been measured.
- Mesotrophic
St Lucie-Jeffery Lake in St. Lucie County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 6 ft visibility. Phosphorus: 13 µg/L.
St Lucie-Jeffery Lake is a mesotrophic lake in St. Lucie County, Florida. Overall water quality is declining over recent sampling years. Compared to the 4 other monitored lakes in St. Lucie County, St Lucie-Jeffery Lake ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2023-04-14. 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 St Lucie-Jeffery 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 St Lucie-Jeffery Lake
These are the measurements Florida DEP publishes for St Lucie-Jeffery 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 6 ft. Phosphorus 13 µg/L. TSI 46.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 6ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 13µg/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. | 46 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
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Fishing St Lucie-Jeffery Lake
Water quality readings over time
3 seasons of samples on record (2020–2022). Calling a direction takes at least 4 years of the same measurement.
Water clarity
Worsening3 years
Phosphorus
Worsening+5.25 µg/L/yr3 years
Nearby Lakes in St. Lucie County
Frequently asked questions about St Lucie-Jeffery Lake
Where is St Lucie-Jeffery Lake?
- St Lucie-Jeffery Lake is a lake in St. Lucie County, Florida. Its water-quality measurements are published by Florida DEP and shown on this page as reported.
What is the water quality of St Lucie-Jeffery Lake?
- St Lucie-Jeffery Lake in St. Lucie County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 6 ft visibility. Phosphorus: 13 µg/L.
Is St Lucie-Jeffery Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore St Lucie-Jeffery Lake across LakeQuality
More lakes in Florida
Other Lakes in Florida
Mesotrophic Lakes in Florida
Where this data comes from
175 measurements from 3 monitoring stations, 2020–2023. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- FLORIDA LAKEWATCH
21FLKWAT_WQX175 samples · 2020–2023
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.