Osceola-Ajay Lake
Osceola-Ajay Lake in Osceola County, Florida has a water quality grade of B (Good). Water clarity: 2 ft visibility. Phosphorus: 32 µg/L.
- Clarity
- 2 ft
- Max depth
- ~47 ft est.
- Type
- Eutrophic
- Trend
- ↑ Improving
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Osceola-Ajay Lake is a productive, nutrient-rich eutrophic lake in Osceola County, Florida with an estimated average depth of about 47 feet. Water quality is graded B based on 1 sampling years through 2021. Overall water quality is improving over recent sampling years. Compared to the 30 other monitored lakes in Osceola County, Osceola-Ajay Lake ranks #9 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2021-06-24. Grade methodology: LakeQuality methodology.
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Swimming Safety
Grade onlyLimited data
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 2 ft of visibility. Phosphorus level: 32 µg/L. Trophic State Index: 61.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2 ft | Not graded |
| Phosphorus | 32 µg/L | Good |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 61 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Osceola-Ajay Lake
Compare lakeside cabins, hotels, and vacation rentals near Osceola-Ajay 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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Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | ~47 ft est. |
| Average Depth | ~11 ft est. |
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Florida has not published bathymetry for Osceola-Ajay Lake.
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth here is modelled, not surveyed — HydroLAKES v1.0 estimates lake depth from surrounding terrain rather than from soundings. Treat it as an approximation, and prefer a state bathymetric survey where one exists.
Fishing Osceola-Ajay Lake
Water Quality Trend: ↑ Improving
Based on 2 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +1.75 m/yr | 2 |
| Phosphorus | ↑ Improving | -21.5 µg/L/yr | 2 |
County Ranking
Ranked #9 of 31 lakes in Osceola County
Nearby Lakes in Osceola County
Frequently asked questions about Osceola-Ajay Lake
Where is Osceola-Ajay Lake?
- Osceola-Ajay 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-Ajay Lake?
- Osceola-Ajay Lake in Osceola County, Florida has a water quality grade of B (Good). Water clarity: 2 ft visibility. Phosphorus: 32 µg/L.
Is Osceola-Ajay Lake safe to swim in?
- Good for swimming, clear water with low algae levels. Osceola-Ajay Lake has a water quality grade of B (Good). Always check local health department advisories before swimming.
How deep is Osceola-Ajay Lake?
- No published bathymetric survey covers Osceola-Ajay Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 47 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.
Explore Osceola-Ajay Lake across LakeQuality
More Florida Lake Rankings
Other Grade B Lakes in Florida
Eutrophic Lakes in Florida
Where this data comes from
24 measurements from 3 monitoring stations, 2020–2021. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- FLORIDA LAKEWATCH
21FLKWAT_WQX24 samples · 2020–2021
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
Lake size & watershed from HydroLAKES (HydroSHEDS)