Middle of Lake Francis
Middle of Lake Francis in Madison County, Florida has a water quality grade of D (Nutrient-rich). Water clarity: 1.6 ft visibility. Phosphorus: 135 µg/L.
- Clarity
- 1.6 ft
- Typical in July
- 86°F
- Type
- Hypereutrophic
- Trend
- ↓ Declining
Grade D measures nutrients and algae, not whether this is a good place for a cabin trip. Cabins and rentals near Middle of Lake Francis →
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Middle of Lake Francis is a highly nutrient-loaded hypereutrophic lake in Madison County, Florida. Water quality is graded D based on 1 sampling years through 2025. Overall water quality is declining over recent sampling years. Compared to the 4 other monitored lakes in Madison County, Middle of Lake Francis ranks #5 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-07-17. 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, Middle of Lake Francis routinely exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 30% of 10 samples across 2 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 1.6 ft of visibility. Phosphorus level: 135 µg/L. Trophic State Index: 72.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.6 ft | Not graded |
| Phosphorus | 135 µg/L | Poor |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 72 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Where to stay near Middle of Lake Francis
Compare lakeside cabins, hotels, and vacation rentals near Middle of Lake Francis in Madison 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 Middle of Lake Francis are listed below.
Top-rated places to stay near Middle of Lake Francis
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Planning a whole trip? See where to stay at Florida’s top lakes →
Water Temperature
Middle of Lake Francis typically sits around 86°F at the surface in July. Summer average is about 88°F. Usually warmest in Jun (about 89°F) and coldest in Jan (about 54°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 29 field readings (2011–2025) via the EPA Water Quality Portal. See the full Middle of Lake Francis water temperature breakdown →
Fishing Middle of Lake Francis
Water Quality Trend: ↓ Declining
Based on 6 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.054 m/yr | 6 |
| Phosphorus | ↓ Declining | +5.84 µg/L/yr | 6 |
EPA Impairment Status
Middle of Lake Francis is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit FL3366A · Official waterbody report · Matched by proximity (0.05 km)
County Ranking
Ranked #5 of 5 lakes in Madison County
Nearby Lakes in Madison County
Frequently asked questions about Middle of Lake Francis
Where is Middle of Lake Francis?
- Middle of Lake Francis is a lake in Madison County, Florida. LakeQuality grades it D for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Middle of Lake Francis?
- Middle of Lake Francis in Madison County, Florida has a water quality grade of D (Nutrient-rich). Water clarity: 1.6 ft visibility. Phosphorus: 135 µg/L.
Is Middle of Lake Francis safe to swim in?
- Based on E. coli testing, Middle of Lake Francis routinely exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 30% of 10 samples across 2 seasons. That works out to a bacteria swim-safety grade of F — a historical summary of past testing, not a current reading. Middle of Lake Francis 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 Middle of Lake Francis?
- Middle of Lake Francis typically sits around 86°F at the surface in July, from 29 EPA Water Quality Portal field readings (2011–2025). That is a typical value for the month, not a live reading.
Explore Middle of Lake Francis across LakeQuality
More Florida Lake Rankings
Other Grade D Lakes in Florida
Hypereutrophic Lakes in Florida
Where this data comes from
17 measurements from 1 monitoring station, 2024–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Submitting organization not recorded for these samples17 samples · 2024–2025
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