Lgs Lake
Lake County, FloridaView mapDirections
Florida DEP publishes the water-quality measurements for Lgs Lake. Here is what has been measured.
- Eutrophic
- Impaired · Algal growth
Lgs Lake in Lake County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 2 ft visibility. Phosphorus: 21 µg/L.
Lgs Lake is a productive, nutrient-rich eutrophic lake in Lake County, Florida. Water clarity is improving over recent sampling years. Compared to the 127 other monitored lakes in Lake County, Lgs Lake ranks #46 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-06-02. Methodology: how these readings are compared.
Swimming conditions
Readings onlyRecreation use not supported
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. Lgs Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for algal growth, nutrients (phosphorus, nitrogen). Check local advisories before you swim.
Whether Lgs 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 Lgs Lake
These are the measurements Florida DEP publishes for Lgs Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Very murky, less than 2 ft of visibility. Phosphorus 21 µg/L. TSI 58.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 2ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 21µg/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. | 58 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Lgs Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Lgs Lake typically sits around 77°F at the surface in October. Summer average is about 85°F. Usually warmest in Aug (about 86°F) and coldest in Dec (about 59°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (59°F) to its warmest (86°F).
Typical surface water temperature by month, from 149 field readings (2010–2025) via the EPA Water Quality Portal. See the full Lgs Lake water temperature breakdown →
Stays via Stay22
Stays near Lgs Lake
Compare lakeside cabins, hotels, and vacation rentals near Lgs Lake in Lake 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 Lgs Lake
Prices for Oct 16–18, 4 adults. Change dates on the map below.
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 →
Follow Lgs Lake’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing Lgs Lake
Water Quality Trend: Stable
Based on 6 years of monitoring (2020–2025).
Water clarity
Improving6 years
Phosphorus
Worsening+3.65 µg/L/yr6 years
EPA Impairment Status
Lgs Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 4A).
Causes of impairment
Designated uses not supporting: Aquatic life, Recreation.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit FL2814A · Official waterbody report
Nearby Lakes in Lake County
Frequently asked questions about Lgs Lake
Where is Lgs Lake?
- Lgs Lake is a lake in Lake County, Florida. Its water-quality measurements are published by Florida DEP and shown on this page as reported.
What is the water quality of Lgs Lake?
- Lgs Lake in Lake County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 2 ft visibility. Phosphorus: 21 µg/L.
Is Lgs Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Lgs Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for algal growth, nutrients (phosphorus, nitrogen). Check local advisories before you swim.
What is the water temperature of Lgs Lake?
- Lgs Lake typically sits around 77°F at the surface in October, from 149 EPA Water Quality Portal field readings (2010–2025). That is a typical value for the month, not a live reading.
Explore Lgs Lake across LakeQuality
More lakes in Florida
Other Lakes in Florida
Eutrophic Lakes in Florida
Where this data comes from
97 measurements from 1 monitoring station, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- St. Johns River Water Management District
21FLSJWM_WQX97 samples · 2020–2025
Monitoring station identifiers (1)
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.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database