Henderson Lake
Citrus County, FloridaView mapDirections
Florida DEP publishes the water-quality measurements for Henderson Lake. Here is what has been measured.
- Impaired · Mercury
- Limited data
Henderson Lake in Citrus County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 5.6 ft visibility. Phosphorus: 17 µg/L.
Henderson Lake is a lake in Citrus County, Florida. Overall water quality is declining over recent sampling years.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2020-06-16. Methodology: how these readings are compared.
If you are planning to stay, you can search lake houses and cabins around Henderson Lake on Vrbo, or look for a hotel room near the lake on Booking.com or Expedia.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Henderson Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
Whether Henderson 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 Henderson Lake
These are the measurements Florida DEP publishes for Henderson Lake, 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 5.6 ft. Phosphorus 17 µg/L. TSI 49.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 5.6ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 17µg/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 Henderson Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Henderson Lake typically sits around 81°F at the surface in October. Summer average is about 85°F. Usually warmest in Jul (about 86°F) and coldest in Dec (about 62°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (62°F) to its warmest (86°F).
Typical surface water temperature by month, from 44 field readings (2014–2023) via the EPA Water Quality Portal.
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Stays near Henderson Lake
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Fishing Henderson Lake
Water Quality Trend: Worsening
Based on 5 years of monitoring (2020–2024).
Water clarity
Worsening4 years
Phosphorus
Worsening+0.3 µg/L/yr5 years
EPA Impairment Status
Henderson Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 4A).
Causes of impairment
Designated uses not supporting: Fish consumption.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit FL1340N · Official waterbody report
Nearby Lakes in Citrus County
Frequently asked questions about Henderson Lake
Where is Henderson Lake?
- Henderson Lake is a lake in Citrus County, Florida. Its water-quality measurements are published by Florida DEP and shown on this page as reported.
What is the water quality of Henderson Lake?
- Henderson Lake in Citrus County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 5.6 ft visibility. Phosphorus: 17 µg/L.
Is Henderson Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Henderson Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
What is the water temperature of Henderson Lake?
- Henderson Lake typically sits around 81°F at the surface in October, from 44 EPA Water Quality Portal field readings (2014–2023). That is a typical value for the month, not a live reading.
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Where this data comes from
2 measurements from 1 monitoring station, 2020. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Submitting organization not recorded for these samples2 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