Clear Lake
Alachua County, FloridaHypereutrophic
Clear Lake is a highly nutrient-loaded hypereutrophic lake in Alachua County, Florida. Water quality is graded F based on 2 sampling years through 2021. Compared to the 101 other monitored lakes in Alachua County, Clear Lake ranks #91 for water quality.
Source: EPA Water Quality Portal sampling records, Florida DNR, last sampled 2021-04-20. 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 1.3 ft of visibility. Phosphorus level: 160 µg/L. Trophic State Index: 75.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.3 ft | F |
| Phosphorus | 160 µg/L | F |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 75 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Location
County Ranking
Ranked #91 of 102 lakes in Alachua County
Cleaner Lakes Within 30 Miles
Clear Lake holds Grade F. 3 nearby lakes hold higher grades.
- DAlachua-Alice LakeAlachua County · 2 mi · Higher grade (F → D)
- DAlicetst LakeAlachua County · 2 mi · Higher grade (F → D)
- DAlachua-Moon LakeAlachua County · 2.1 mi · Higher grade (F → D)
Nearby Lakes in Alachua County
More Florida Lake Rankings
Other Grade F Lakes in Florida
Hypereutrophic Lakes in Florida
Regulated Pollution Sources Nearby
1 EPA-permitted facility operate within about 5 miles of Clear Lake under Clean Water Act (NPDES) discharge permits. 1 facility has a reported Clean Water Act violation in the past three years.
- Kanapaha WrfGainesville · 3 mi away · NPDES FL0112895Recent violation
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)
Grading methodology based on Metropolitan Council standards
Most recent sample: 2021-04-20
Monitoring stations: 1
Where to stay near Clear Lake
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