Horney-Col Lake
Polk County, FloridaHypereutrophic
Horney-Col Lake is a highly nutrient-loaded hypereutrophic lake in Polk County, Florida. Water quality is graded F based on 2 sampling years through 2025. Compared to the 360 other monitored lakes in Polk County, Horney-Col Lake ranks #311 for water quality.
Source: EPA Water Quality Portal sampling records, Florida DNR, last sampled 2025-09-03. 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 1.6 ft of visibility. Phosphorus level: 112 µg/L. Trophic State Index: 71.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.6 ft | F |
| Phosphorus | 112 µg/L | F |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 71 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Location
County Ranking
Ranked #311 of 361 lakes in Polk County
Cleaner Lakes Within 30 Miles
Horney-Col Lake holds Grade F. 4 nearby lakes hold higher grades.
- DLake BonnyPolk County · 1 mi · Higher grade (F → D)
- DMorton-Col LakePolk County · 0.9 mi · Higher grade (F → D)
- DMirror-Col LakePolk County · 1.1 mi · Higher grade (F → D)
- DLake HollingsworthPolk County · 1.1 mi · Higher grade (F → D)
Nearby Lakes in Polk County
More Florida Lake Rankings
Other Grade F Lakes in Florida
Hypereutrophic Lakes in Florida
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2025-09-03
Monitoring stations: 1
Where to stay near Horney-Col Lake
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