Lilyclay Lake
Lilyclay Lake in Clay County, Florida is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 10.2 ft visibility. Phosphorus: 10 µg/L.
- Clarity
- 10.2 ft
- Typical in July
- 86°F
- Trend
- → Stable
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Why Lilyclay Lake 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 Lilyclay Lake, 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.
Lilyclay Lake is a lake in Clay County, Florida. Water clarity is declining over recent sampling years.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-07-01. Grade methodology: LakeQuality methodology.
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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 Lilyclay Lake
These readings exist but are not enough for an A–F grade — see why.
Good clarity, visible to about 10.2 ft. Phosphorus level: 10 µg/L. Trophic State Index: 41.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 10.2 ft | Not graded |
| Phosphorus | 10 µg/L | Not graded |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 41 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Lilyclay Lake
Compare lakeside cabins, hotels, and vacation rentals near Lilyclay Lake in Clay 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 Lilyclay Lake
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Planning a whole trip? See where to stay at Florida’s top lakes →
Water Temperature
Lilyclay Lake typically sits around 86°F at the surface in July. Summer average is about 86°F. Usually warmest in Jul (about 86°F) and coldest in Feb (about 62°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 11 field readings (2019–2025) via the EPA Water Quality Portal. See the full Lilyclay Lake water temperature breakdown →
Fishing Lilyclay Lake
Water Quality Trend: → Stable
Based on 6 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.7 m/yr | 6 |
| Phosphorus | ↑ Improving | -0.39 µg/L/yr | 6 |
EPA Impairment Status
Lilyclay Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit FL2509H · Official waterbody report · Matched by proximity (0.16 km)
Graded lakes near Lilyclay Lake
Lilyclay Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Clay County
Frequently asked questions about Lilyclay Lake
Where is Lilyclay Lake?
- Lilyclay Lake is a lake in Clay 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 Lilyclay Lake?
- Lilyclay Lake in Clay County, Florida is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 10.2 ft visibility. Phosphorus: 10 µg/L.
Is Lilyclay Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Lilyclay Lake 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 Lilyclay Lake?
- Lilyclay Lake typically sits around 86°F at the surface in July, from 11 EPA Water Quality Portal field readings (2019–2025). That is a typical value for the month, not a live reading.
Explore Lilyclay Lake across LakeQuality
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Where this data comes from
6 measurements from 1 monitoring station, 2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- FL Dept. of Environmental Protection, Northeast District
21FLA_WQX6 samples · 2025
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