Osceola-Coon Lake
Osceola-Coon Lake in Osceola County, Florida has a water quality grade of B (Good). Water clarity: 1.5 ft visibility. Phosphorus: 31 µg/L.
- Clarity
- 1.5 ft
- Type
- Eutrophic
- Trend
- ↓ Declining
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Osceola-Coon Lake is a productive, nutrient-rich eutrophic lake in Osceola County, Florida. Water quality is graded B based on 1 sampling years through 2025. Overall water quality is declining over recent sampling years. Compared to the 30 other monitored lakes in Osceola County, Osceola-Coon Lake ranks #7 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-03-12. Grade methodology: LakeQuality methodology.
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Swimming Safety
Grade onlyLow algae
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.
Good for swimming, clear water with low algae levels
Water Quality Grade: B (Good)
Very murky, less than 1.5 ft of visibility. Phosphorus level: 31 µg/L. Trophic State Index: 62.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.5 ft | Not graded |
| Phosphorus | 31 µg/L | Good |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 62 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Osceola-Coon Lake
Compare lakeside cabins, hotels, and vacation rentals near Osceola-Coon Lake in Osceola 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.
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Fishing Osceola-Coon Lake
Water Quality Trend: ↓ Declining
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.1 m/yr | 5 |
| Phosphorus | ↓ Declining | +3.3 µg/L/yr | 5 |
EPA Impairment Status
Osceola-Coon Lake 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 FL3174D · Official waterbody report · Matched by proximity (0.03 km)
County Ranking
Ranked #7 of 31 lakes in Osceola County
Nearby Lakes in Osceola County
Frequently asked questions about Osceola-Coon Lake
Where is Osceola-Coon Lake?
- Osceola-Coon Lake is a lake in Osceola County, Florida. LakeQuality grades it B for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Osceola-Coon Lake?
- Osceola-Coon Lake in Osceola County, Florida has a water quality grade of B (Good). Water clarity: 1.5 ft visibility. Phosphorus: 31 µg/L.
Is Osceola-Coon Lake safe to swim in?
- Good for swimming, clear water with low algae levels. Osceola-Coon Lake has a water quality grade of B (Good). Always check local health department advisories before swimming.
Explore Osceola-Coon Lake across LakeQuality
More Florida Lake Rankings
Other Grade B Lakes in Florida
Eutrophic Lakes in Florida
Where this data comes from
340 measurements from 3 monitoring stations, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- FLORIDA LAKEWATCH
21FLKWAT_WQX340 samples · 2020–2025
Monitoring station identifiers (3)
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