Lake Fran
Lake Fran in Orange County, Florida has a water quality grade of D (Nutrient-rich). Water clarity: 2.4 ft visibility. Phosphorus: 78 µg/L.
- Clarity
- 2.4 ft
- Typical in August
- 87°F
- Type
- Eutrophic
- Trend
- ↑ Improving
Grade D measures nutrients and algae, not whether this is a good place for a cabin trip. Cabins and rentals near Lake Fran →
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Lake Fran is a productive, nutrient-rich eutrophic lake in Orange County, Florida. Water quality is graded D based on 1 sampling years through 2025. Overall water quality is improving over recent sampling years. Compared to the 319 other monitored lakes in Orange County, Lake Fran ranks #297 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-04-17. Grade methodology: LakeQuality methodology.
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Swimming Safety
Grade onlyBacteria F
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Based on E. coli testing, Lake Fran routinely exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 35.3% of 34 samples across 6 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 Grade: D (Nutrient-rich)
Very murky, less than 2.4 ft of visibility. Phosphorus level: 78 µg/L. Trophic State Index: 66.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.4 ft | Not graded |
| Phosphorus | 78 µg/L | Poor |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 66 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Lake Fran
Compare lakeside cabins, hotels, and vacation rentals near Lake Fran in Orange 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. The water-quality grade measures nutrients and algae, not lodging — cabins and rentals around Lake Fran are listed below.
Top-rated places to stay near Lake Fran
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Florida’s top lakes →
Water Temperature
Lake Fran typically sits around 87°F at the surface in August. Summer average is about 87°F. Usually warmest in Jul (about 87°F) and coldest in Jan (about 63°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 139 field readings (2010–2025) via the EPA Water Quality Portal. See the full Lake Fran water temperature breakdown →
Fishing Lake Fran
Water Quality Trend: ↑ Improving
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.312 m/yr | 5 |
| Phosphorus | ↑ Improving | -15.75 µg/L/yr | 5 |
EPA Impairment Status
Lake Fran is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit FL3169G3 · Official waterbody report
County Ranking
Ranked #297 of 320 lakes in Orange County
Nearby Lakes in Orange County
Frequently asked questions about Lake Fran
Where is Lake Fran?
- Lake Fran is a lake in Orange County, Florida. LakeQuality grades it D for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Lake Fran?
- Lake Fran in Orange County, Florida has a water quality grade of D (Nutrient-rich). Water clarity: 2.4 ft visibility. Phosphorus: 78 µg/L.
Is Lake Fran safe to swim in?
- Based on E. coli testing, Lake Fran routinely exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 35.3% of 34 samples across 6 seasons. That works out to a bacteria swim-safety grade of F — a historical summary of past testing, not a current reading. Lake Fran has a water quality grade of D (Nutrient-rich). 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 Lake Fran?
- Lake Fran typically sits around 87°F at the surface in August, from 139 EPA Water Quality Portal field readings (2010–2025). That is a typical value for the month, not a live reading.
Explore Lake Fran across LakeQuality
More Florida Lake Rankings
Other Grade D Lakes in Florida
Eutrophic Lakes in Florida
Where this data comes from
36 measurements from 1 monitoring station, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Submitting organization not recorded for these samples36 samples · 2020–2025
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