Gillis Pond Center
Putnam County, FloridaView mapDirections
Florida DEP publishes the water-quality measurements for Gillis Pond Center. Here is what has been measured.
- Impaired · pH / acidity
- 21 ft max depth
- Limited data
Gillis Pond Center in Putnam County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 5.2 ft visibility. Phosphorus: 16 µg/L.
Gillis Pond Center is a lake in Putnam County, Florida with an estimated average depth of about 21 feet. Overall water quality is declining over recent sampling years.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2020-12-14. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Gillis Pond Center is listed impaired under Clean Water Act §303(d) (IR 4C) for pH / acidity. Check local advisories before you swim.
Whether Gillis Pond Center 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 Gillis Pond Center
These are the measurements Florida DEP publishes for Gillis Pond Center, 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 5.2 ft. Phosphorus 16 µg/L. TSI 49.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 5.2ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 16µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| 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. | 49 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Gillis Pond Center
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Gillis Pond Center typically sits around 81°F at the surface in October. Summer average is about 79°F. Usually warmest in Oct (about 81°F) and coldest in Jan (about 57°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (57°F) to its warmest (81°F).
Typical surface water temperature by month, from 26 field readings (2018–2020) via the EPA Water Quality Portal. See the full Gillis Pond Center water temperature breakdown →
Lake Details
Max depth
~21 ft est.
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Florida has not published bathymetry for Gillis Pond Center.
Lake Size & Watershed
Watershed (drainage) area
47 sq mi
HydroLAKES / HydroSHEDS
Surface area
35 acres
HydroLAKES / HydroSHEDS
Shoreline
0.9 mi
HydroLAKES / HydroSHEDS
Elevation
98 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth here is modelled, not surveyed — HydroLAKES v1.0 estimates lake depth from surrounding terrain rather than from soundings. Treat it as an approximation, and prefer a state bathymetric survey where one exists.
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Stays near Gillis Pond Center
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Fishing Gillis Pond Center
Water Quality Trend: Worsening
Based on 5 years of monitoring (2020–2024).
Water clarity
Stable5 years
Phosphorus
Worsening+0.5 µg/L/yr5 years
EPA Impairment Status
Gillis Pond Center is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 4C).
Causes of impairment
Designated uses not supporting: Aquatic life.
Source: EPA ATTAINS assessment unit FL2732Y · Official waterbody report
Nearby Lakes in Putnam County
Frequently asked questions about Gillis Pond Center
Where is Gillis Pond Center?
- Gillis Pond Center is a lake in Putnam County, Florida. Its water-quality measurements are published by Florida DEP and shown on this page as reported.
What is the water quality of Gillis Pond Center?
- Gillis Pond Center in Putnam County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 5.2 ft visibility. Phosphorus: 16 µg/L.
Is Gillis Pond Center safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Gillis Pond Center is listed impaired under Clean Water Act §303(d) (IR 4C) for pH / acidity. Check local advisories before you swim.
What is the water temperature of Gillis Pond Center?
- Gillis Pond Center typically sits around 81°F at the surface in October, from 26 EPA Water Quality Portal field readings (2018–2020). That is a typical value for the month, not a live reading.
How deep is Gillis Pond Center?
- No published bathymetric survey covers Gillis Pond Center, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 21 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.
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Where this data comes from
9 measurements from 1 monitoring station, 2020. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- FL Dept. of Environmental Protection, Northeast District
21FLA_WQX9 samples · 2020
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
Lake size & watershed from HydroLAKES (HydroSHEDS)