Harris Lake
Lake County, FloridaView mapDirections
No nutrient or algae sampling on record from Florida DEP for this lake.
- Impaired · Nutrients (phosphorus, nitrogen)
- Limited data
Harris Lake in Lake County, Florida has water-quality measurements published by Florida DEP, shown here as reported.
Harris Lake is a lake in Lake County, Florida. Overall water quality is declining over recent sampling years.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2022-03-21. Methodology: how these readings are compared.
Swimming conditions
No readingRecreation use not supported
Nutrient and algae readings are not a swimming clearance. Harris Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
Whether Harris 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 Harris Lake
These are the measurements Florida DEP publishes for Harris 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.
Ask about Harris Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Harris Lake typically sits around 87°F at the surface in September. Summer average is about 88°F. Usually warmest in Jun (about 88°F) and coldest in Feb (about 61°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (61°F) to its warmest (88°F).
Typical surface water temperature by month, from 26 field readings (2010–2022) via the EPA Water Quality Portal. See the full Harris Lake water temperature breakdown →
Stays via Stay22
Stays near Harris Lake
Compare lakeside cabins, hotels, and vacation rentals near Harris Lake in Lake 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 Harris Lake
Prices for Oct 16–18, 4 adults. Change dates on the map below.
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Fishing Harris Lake
Water quality readings over time
3 seasons of samples on record (2020–2023). Calling a direction takes at least 4 years of the same measurement.
Water clarity
Worsening3 years
Phosphorus
Worsening+13.34 µg/L/yr3 years
EPA Impairment Status
Harris 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: Aquatic life, Recreation.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit FL2838A · Official waterbody report
Nearby Lakes in Lake County
Frequently asked questions about Harris Lake
Where is Harris Lake?
- Harris Lake is a lake in Lake County, Florida. Its water-quality measurements are published by Florida DEP and shown on this page as reported.
What is the water quality of Harris Lake?
- Harris Lake in Lake County, Florida has water-quality measurements published by Florida DEP, shown here as reported.
Is Harris Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Harris Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
What is the water temperature of Harris Lake?
- Harris Lake typically sits around 87°F at the surface in September, from 26 EPA Water Quality Portal field readings (2010–2022). 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, 2022. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Submitting organization not recorded for these samples2 samples · 2022
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