Highlands-Istokpoga Lake
Highlands County, FloridaEutrophic
Highlands-Istokpoga Lake is a productive, nutrient-rich eutrophic lake in Highlands County, Florida. Water quality is graded D based on 2 sampling years through 2024. Compared to the 149 other monitored lakes in Highlands County, Highlands-Istokpoga Lake ranks #140 for water quality.
Source: EPA Water Quality Portal sampling records, Florida DNR, last sampled 2024-03-22. Grade methodology: LakeGrade methodology.
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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 1.8 ft of visibility. Phosphorus level: 90.5 µg/L. Trophic State Index: 69.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.8 ft | F |
| Phosphorus | 90.5 µg/L | D |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 69 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Location
County Ranking
Ranked #140 of 150 lakes in Highlands County
Nearby Lakes in Highlands 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: 2024-03-22
Monitoring stations: 3
Where to stay near Highlands-Istokpoga Lake
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