Harris Lake
Harris Lake in Lake County, Florida is not rated for water quality — its monitoring record does not meet the evidence bar.
- Typical in September
- 87°F
- Trend
- ↓ Declining
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Why Harris Lake has no grade
We grade a lake only when its monitoring record clears the evidence bar: 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 Harris Lake, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
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.
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. Grade methodology: LakeGrade methodology.
Watch Harris Lake water quality
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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 Harris Lake
These readings exist but do not meet the evidence bar for an A–F grade — see why.
No clarity data.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples |
Where to stay 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
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Planning a whole trip? See where to stay at Florida’s top lakes →
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.
Typical surface water temperature by month, from 26 field readings (2010–2022) via the EPA Water Quality Portal.
Fishing Harris Lake
Water Quality Trend: ↓ Declining
Based on 3 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.15 m/yr | 3 |
| Phosphorus | ↓ Declining | +13.34 µg/L/yr | 3 |
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
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit FL2838A · Official waterbody report
Graded lakes near Harris Lake
Harris Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Lake County
Frequently asked questions about Harris Lake
Where is Harris Lake?
- Harris Lake is a lake in Lake County, Florida. LakeQuality has not rated this lake (UNRATED) — there is not enough recent sampling to assign a letter.
What is the water quality grade for Harris Lake?
- Harris Lake in Lake County, Florida is not rated for water quality — its monitoring record does not meet the evidence bar.
Is Harris Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Harris 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 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.
Explore Harris Lake across LakeGrade
More Florida Lake Rankings
Other Lakes in Florida
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)
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
Lake size & watershed from HydroLAKES (HydroSHEDS)