Polk-Fauna Lake
Polk County, FloridaEutrophic
Polk-Fauna Lake is a productive, nutrient-rich eutrophic lake in Polk County, Florida. Water quality is graded D based on 2 sampling years through 2022. Compared to the 360 other monitored lakes in Polk County, Polk-Fauna Lake ranks #254 for water quality.
Source: EPA Water Quality Portal sampling records, Florida DNR, last sampled 2022-09-13. 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 3 ft of visibility. Phosphorus level: 142 µg/L. Trophic State Index: 68.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3 ft | D |
| Phosphorus | 142 µg/L | F |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 68 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Location
County Ranking
Ranked #254 of 361 lakes in Polk County
Nearby Lakes in Polk 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.
Regulated Pollution Sources Nearby
7 EPA-permitted facilities operate within about 5 miles of Polk-Fauna Lake under Clean Water Act (NPDES) discharge permits, including 7 classified by the EPA as major dischargers.
- Fdot District 1 - SarasotaBartow · 2 mi away · NPDES FLS266167Major
- Fdot District 1 - LeeBartow · 2 mi away · NPDES FLS266965Major
- Polk Co & Co App - MS4Bartow · 2.2 mi away · NPDES FLS000015Major
- Fdot District 1 - ManateeBartow · 2.2 mi away · NPDES FLS267368Major
- Fdot District 1 - PolkBartow · 2.2 mi away · NPDES FLS266779Major
- U S Agri-Chemicals Corporation - Bartow Chemical PlantBartow · 2.3 mi away · NPDES FL0001961Major
Facilities permitted to discharge under the Clean Water Act within ~5 miles; proximity does not by itself mean a facility affects this lake. Source: EPA ECHO (ICIS-NPDES), as of 2026-07.
Data Sources
Water quality data from the EPA Water Quality Portal
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Lake size & watershed from HydroLAKES (HydroSHEDS)
Grading methodology based on Metropolitan Council standards
Most recent sample: 2022-09-13
Monitoring stations: 3
Where to stay near Polk-Fauna Lake
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