Aj Henry Lake
Leon County, FloridaView mapDirections
Florida DEP publishes the water-quality measurements for Aj Henry Lake. Here is what has been measured.
- Impaired · Algal growth
- Limited data
Aj Henry Lake in Leon County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Phosphorus: 444.5 µg/L.
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. Methodology: how these readings are compared.
Swimming conditions
No readingRecreation use not supported
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.
Whether Aj Henry 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 Aj Henry Lake
These are the measurements Florida DEP publishes for Aj Henry Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data. Phosphorus 444.5 µg/L. TSI 92.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | No reading How deep a black-and-white disk stays visible from the surface. Higher is clearer. | |
| Total phosphorus | 445µg/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. | 92 | Hypereutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Very high nutrients, dense algae, poor clarity
Ask about Aj Henry Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Aj Henry Lake typically sits around 75°F at the surface in October. 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.
Column height runs from this lake’s coldest month (57°F) to its warmest (89°F).
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 →
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Stays near Aj Henry Lake
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Fishing Aj Henry Lake
Water quality readings over time
2 seasons of samples on record (2021–2024). Calling a direction takes at least 4 years of the same measurement.
Phosphorus
Improving-83.67 µg/L/yr2 years
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
Designated uses not supporting: Aquatic life, Recreation.
Source: EPA ATTAINS assessment unit FL647I · Official waterbody report
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. Its water-quality measurements are published by Florida DEP and shown on this page as reported.
What is the water quality of Aj Henry Lake?
- Aj Henry Lake in Leon County, Florida has water-quality measurements published by Florida DEP, shown here as reported. 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 is a historical summary of past bacteria testing, not a current reading and not a swimming clearance. Bacteria levels can spike quickly after heavy rain, so whether Aj Henry Lake is safe to swim in today is a call for Florida's water agency and the county health department; check their current beach advisories before you swim.
What is the water temperature of Aj Henry Lake?
- Aj Henry Lake typically sits around 75°F at the surface in October, from 30 EPA Water Quality Portal field readings (2010–2024). That is a typical value for the month, not a live reading.
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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)
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