Aj Henry Lake
Aj Henry Lake in Leon County, Florida is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 444.5 µg/L.
- Typical in July
- 89°F
- Trend
- ↑ Improving
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Why Aj Henry 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 Aj Henry Lake, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). Sampling here has recorded phosphorus, but not water clarity and 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.
Aj Henry Lake is a lake in Leon County, Florida. Overall water quality is improving over recent sampling years.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2024-08-07. Grade methodology: LakeQuality methodology.
Watch Aj Henry Lake water quality
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Swimming Safety
Not ratedBacteria A
Based on E. coli testing, Aj Henry Lake never exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 0% of 5 samples across 3 seasons.
This is a historical summary of past testing, not a current condition — bacteria levels change quickly, especially after rain. Always check Florida’s current beach and health-department advisories before swimming.
Water quality measurements for Aj Henry Lake
These readings exist but are not enough for an A–F grade — see why.
No clarity data. Phosphorus level: 444.5 µg/L. Trophic State Index: 92.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 444.5 µg/L | Not graded |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 92 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Where to stay near Aj Henry Lake
Compare lakeside cabins, hotels, and vacation rentals near Aj Henry Lake in Leon 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 Aj Henry Lake
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Water Temperature
Aj Henry Lake typically sits around 89°F at the surface in July. Summer average is about 87°F. Usually warmest in Jul (about 89°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 30 field readings (2010–2024) via the EPA Water Quality Portal. See the full Aj Henry Lake water temperature breakdown →
Fishing Aj Henry Lake
Water Quality Trend: ↑ Improving
Based on 2 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Phosphorus | ↑ Improving | -83.67 µg/L/yr | 2 |
EPA Impairment Status
Aj Henry 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 FL647I · Official waterbody report · Matched by proximity (0.05 km)
Graded lakes near Aj Henry Lake
Aj Henry Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Leon County
Frequently asked questions about Aj Henry Lake
Where is Aj Henry Lake?
- Aj Henry Lake is a lake in Leon 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 Aj Henry Lake?
- Aj Henry Lake in Leon County, Florida is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 444.5 µg/L.
Is Aj Henry Lake safe to swim in?
- Based on E. coli testing, Aj Henry Lake never exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 0% of 5 samples across 3 seasons. That works out to a bacteria swim-safety grade of A — a historical summary of past testing, not a current reading. Aj Henry Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Bacteria levels can spike quickly after heavy rain, so always check Florida's current beach and health-department advisories before you swim.
What is the water temperature of Aj Henry Lake?
- Aj Henry Lake typically sits around 89°F at the surface in July, from 30 EPA Water Quality Portal field readings (2010–2024). That is a typical value for the month, not a live reading.
Explore Aj Henry Lake across LakeQuality
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Where this data comes from
5 measurements from 1 monitoring station, 2020–2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Submitting organization not recorded for these samples5 samples · 2020–2024
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