Polk-Garfield Lake
Polk County, FloridaLimited DataEutrophic
Polk-Garfield Lake is a productive, nutrient-rich eutrophic lake in Polk County, Florida. Water quality is graded F based on 1 sampling years through 2025. Compared to the 360 other monitored lakes in Polk County, Polk-Garfield Lake ranks #358 for water quality.
Source: EPA Water Quality Portal sampling records, Florida DNR, last sampled 2025-04-09. Grade methodology: LakeGrade methodology.
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Swimming Safety
Avoid swimming, very poor water quality, potential algae toxins
Water Quality Grade: F, Very Poor
Very murky, less than 1.8 ft of visibility. Trophic State Index: 69.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.8 ft | F |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 69 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Location
County Ranking
Ranked #358 of 361 lakes in Polk County
Cleaner Lakes Within 30 Miles
Polk-Garfield Lake holds Grade F. One nearby lake has a higher grade.
Nearby Lakes in Polk County
More Florida Lake Rankings
Other Grade F 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: 2025-04-09
Monitoring stations: 3
Where to stay near Polk-Garfield Lake
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