Hillsborough-Long Pond
Hillsborough County, FloridaEutrophic
Hillsborough-Long Pond is a productive, nutrient-rich eutrophic lake in Hillsborough County, Florida. Water quality is graded D based on 2 sampling years through 2025. Compared to the 221 other monitored lakes in Hillsborough County, Hillsborough-Long Pond ranks #143 for water quality.
Source: EPA Water Quality Portal sampling records, Florida DNR, last sampled 2025-02-15. Grade methodology: LakeGrade methodology.
Watch Hillsborough-Long Pond water quality
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Swimming Safety
Swimming not recommended, poor water quality with high algae risk
Water Quality Grade: D, Poor
Very murky, less than 2 ft of visibility. Phosphorus level: 50.5 µg/L. Trophic State Index: 64.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2 ft | F |
| Phosphorus | 50.5 µg/L | C |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 64 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Location
County Ranking
Ranked #143 of 222 lakes in Hillsborough County
Cleaner Lakes Within 30 Miles
Hillsborough-Long Pond holds Grade D. 2 nearby lakes hold higher grades.
- CHillsborough-June LakeHillsborough County · 2 mi · Higher grade (D → C)
- CHillsborough-Wee LakeHillsborough County · 2 mi · Higher grade (D → C)
Nearby Lakes in Hillsborough County
More Florida Lake Rankings
Other Grade D Lakes in Florida
Eutrophic Lakes in Florida
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth is a modeled estimate.
Data Sources
Water quality data from the EPA Water Quality Portal
Lake size & watershed from HydroLAKES (HydroSHEDS)
Grading methodology based on Metropolitan Council standards
Most recent sample: 2025-02-15
Monitoring stations: 3
Where to stay near Hillsborough-Long Pond
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