St Lucie-Jeffery Lake
St Lucie-Jeffery Lake in St. Lucie County, Florida has a water quality grade of B (Good). Water clarity: 6 ft visibility. Phosphorus: 13 µg/L.
- Clarity
- 6 ft
- Type
- Mesotrophic
- Trend
- ↓ Declining
Next lake in St. Lucie County
Swipe left or right on this bar to open the next or previous lake.
St Lucie-Jeffery Lake is a mesotrophic lake in St. Lucie County, Florida. Water quality is graded B based on 1 sampling years through 2023. 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. Grade methodology: LakeQuality methodology.
Watch St Lucie-Jeffery Lake water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
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)
Murky, only visible to about 6 ft. Phosphorus level: 13 µg/L. Trophic State Index: 46.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 6 ft | Not graded |
| Phosphorus | 13 µg/L | Good |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 46 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near St Lucie-Jeffery Lake
Compare lakeside cabins, hotels, and vacation rentals near St Lucie-Jeffery Lake in St. Lucie 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 St Lucie-Jeffery Lake
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Florida’s top lakes →
Fishing St Lucie-Jeffery Lake
Water Quality Trend: ↓ Declining
Based on 3 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.9 m/yr | 3 |
| Phosphorus | ↓ Declining | +5.25 µg/L/yr | 3 |
County Ranking
Ranked #2 of 5 lakes in St. Lucie County
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. LakeQuality grades it B for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for St Lucie-Jeffery Lake?
- St Lucie-Jeffery Lake in St. Lucie County, Florida has a water quality grade of B (Good). Water clarity: 6 ft visibility. Phosphorus: 13 µg/L.
Is St Lucie-Jeffery Lake safe to swim in?
- Good for swimming, clear water with low algae levels. St Lucie-Jeffery Lake has a water quality grade of B (Good). Always check local health department advisories before swimming.
Explore St Lucie-Jeffery Lake across LakeQuality
More Florida Lake Rankings
Other Grade B 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)
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.