Lake Hiawassee South
Lake Hiawassee South in Orange County, Florida has a water quality grade of B (Good). Water clarity: 9.3 ft visibility. Phosphorus: 12 µg/L.
- Clarity
- 9.3 ft
- Typical in August
- 87°F
- Type
- Mesotrophic
- Trend
- → Stable
Next lake in Orange County
Swipe left or right on this bar to open the next or previous lake.
Lake Hiawassee South is a mesotrophic lake in Orange County, Florida. Water quality is graded B based on 1 sampling years through 2025. Compared to the 319 other monitored lakes in Orange County, Lake Hiawassee South ranks #73 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-04-23. Grade methodology: LakeQuality methodology.
Watch Lake Hiawassee South water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Grade onlyBacteria A
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 Hiawassee South never exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 0% of 25 samples across 7 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: B (Good)
Moderate clarity, visible to about 9.3 ft. Phosphorus level: 12 µg/L. Trophic State Index: 42.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 9.3 ft | Not graded |
| Phosphorus | 12 µg/L | Good |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 42 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Lake Hiawassee South
Compare lakeside cabins, hotels, and vacation rentals near Lake Hiawassee South 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.
Top-rated places to stay near Lake Hiawassee South
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 Hiawassee South 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 Feb (about 59°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 94 field readings (2010–2025) via the EPA Water Quality Portal. See the full Lake Hiawassee South water temperature breakdown →
Fishing Lake Hiawassee South
Water Quality Trend: → Stable
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | → Stable | -0.031 m/yr | 5 |
| Phosphorus | → Stable | -0.1 µg/L/yr | 5 |
County Ranking
Ranked #73 of 320 lakes in Orange County
Nearby Lakes in Orange County
Frequently asked questions about Lake Hiawassee South
Where is Lake Hiawassee South?
- Lake Hiawassee South is a lake in Orange County, Florida. LakeQuality grades it B for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Lake Hiawassee South?
- Lake Hiawassee South in Orange County, Florida has a water quality grade of B (Good). Water clarity: 9.3 ft visibility. Phosphorus: 12 µg/L.
Is Lake Hiawassee South safe to swim in?
- Based on E. coli testing, Lake Hiawassee South never exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 0% of 25 samples across 7 seasons. That works out to a bacteria swim-safety grade of A — a historical summary of past testing, not a current reading. Lake Hiawassee South has a water quality grade of B (Good). 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 Hiawassee South?
- Lake Hiawassee South typically sits around 87°F at the surface in August, from 94 EPA Water Quality Portal field readings (2010–2025). That is a typical value for the month, not a live reading.
Explore Lake Hiawassee South across LakeQuality
More Florida Lake Rankings
Other Grade B Lakes in Florida
Mesotrophic 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.