Gillis Pond Center
Gillis Pond Center in Putnam County, Florida is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 5.2 ft visibility. Phosphorus: 16 µg/L.
- Clarity
- 5.2 ft
- Typical in July
- 79°F
- Max depth
- ~21 ft est.
- Trend
- ↓ Declining
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Why Gillis Pond Center has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Gillis Pond Center, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). Sampling here has recorded water clarity and phosphorus, but not algae (chlorophyll-a).
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by FDEP and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
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. Grade methodology: LakeQuality methodology.
Watch Gillis Pond Center water quality
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Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Gillis Pond Center
These readings exist but are not enough for an A–F grade — see why.
Murky, only visible to about 5.2 ft. Phosphorus level: 16 µg/L. Trophic State Index: 49.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 5.2 ft | Not graded |
| Phosphorus | 16 µg/L | Not graded |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 49 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Gillis Pond Center
Compare lakeside cabins, hotels, and vacation rentals near Gillis Pond Center in Putnam 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 Gillis Pond Center
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Water Temperature
Gillis Pond Center typically sits around 79°F at the surface in July. 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.
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
| Characteristic | Value |
|---|---|
| Maximum Depth | ~21 ft est. |
| Average Depth | ~7 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
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.
Fishing Gillis Pond Center
Water Quality Trend: ↓ Declining
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | → Stable | -0.04 m/yr | 5 |
| Phosphorus | ↓ Declining | +0.5 µg/L/yr | 5 |
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
Source: EPA ATTAINS assessment unit FL2732Y · Official waterbody report · Matched by proximity (0.03 km)
Graded lakes near Gillis Pond Center
Gillis Pond Center has no grade, but these lakes within a short drive do.
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. LakeQuality has not rated this lake (UNRATED) — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
What is the water quality grade for Gillis Pond Center?
- Gillis Pond Center in Putnam County, Florida is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 5.2 ft visibility. Phosphorus: 16 µg/L.
Is Gillis Pond Center safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Gillis Pond Center is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
What is the water temperature of Gillis Pond Center?
- Gillis Pond Center typically sits around 79°F at the surface in July, 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.
Explore Gillis Pond Center across LakeQuality
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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)
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.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database
Lake size & watershed from HydroLAKES (HydroSHEDS)