Hart Lake
Hart Lake in Orange County, Florida has a water quality grade of B (Good). Water clarity: 2.3 ft visibility. Phosphorus: 19.5 µg/L.
- Clarity
- 2.3 ft
- Type
- Eutrophic
- Trend
- → Stable
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Hart Lake is a productive, nutrient-rich eutrophic lake in Orange County, Florida. Water quality is graded B based on 1 sampling years through 2024. Water clarity is improving over recent sampling years. Compared to the 319 other monitored lakes in Orange County, Hart Lake ranks #107 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2024-12-02. 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 2.3 ft of visibility. Phosphorus level: 19.5 µg/L. Trophic State Index: 56.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.3 ft | Not graded |
| Phosphorus | 19.5 µg/L | Good |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 56 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Hart Lake
Compare lakeside cabins, hotels, and vacation rentals near Hart Lake 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 Hart Lake
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Planning a whole trip? See where to stay at Florida’s top lakes →
Fishing Hart Lake
Water Quality Trend: → Stable
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.12 m/yr | 5 |
| Phosphorus | ↓ Declining | +1 µg/L/yr | 5 |
EPA Impairment Status
Hart Lake 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 FL3171 · Official waterbody report
County Ranking
Ranked #107 of 320 lakes in Orange County
Nearby Lakes in Orange County
Frequently asked questions about Hart Lake
Where is Hart Lake?
- Hart Lake 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 Hart Lake?
- Hart Lake in Orange County, Florida has a water quality grade of B (Good). Water clarity: 2.3 ft visibility. Phosphorus: 19.5 µg/L.
Is Hart Lake safe to swim in?
- Good for swimming, clear water with low algae levels. Hart Lake has a water quality grade of B (Good). Always check local health department advisories before swimming.
Explore Hart Lake across LakeQuality
Planning a trip around Canaveral?
Hart Lake is about 39 miles from Canaveral National Seashore. Crowds there swing hard by season, so the month you pick changes both how busy the park is and what lodging costs.
Best time to visit Canaveral →More Florida Lake Rankings
Other Grade B Lakes in Florida
Eutrophic Lakes in Florida
Where this data comes from
67 measurements from 2 monitoring stations, 2020–2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Submitting organization not recorded for these samples63 samples · 2020–2024
- Submitting organization not recorded for these samples4 samples · 2021
Monitoring station identifiers (2)
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