Alligator Creek Lake
Pinellas County, FloridaLimited DataHypereutrophic
Alligator Creek Lake is a highly nutrient-loaded hypereutrophic lake in Pinellas County, Florida. Water quality is graded F based on 1 sampling years through 2025. Compared to the 54 other monitored lakes in Pinellas County, Alligator Creek Lake ranks #53 for water quality.
Source: EPA Water Quality Portal sampling records, Florida DNR, last sampled 2025-01-29. Grade methodology: LakeGrade methodology.
Watch Alligator Creek Lake water quality
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Swimming Safety
Avoid swimming, very poor water quality, potential algae toxins
Water Quality Grade: F, Very Poor
No clarity data. Phosphorus level: 155 µg/L. Trophic State Index: 77.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | 155 µg/L | F |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 77 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Location
County Ranking
Ranked #53 of 55 lakes in Pinellas County
Cleaner Lakes Within 30 Miles
Alligator Creek Lake holds Grade F. 3 nearby lakes hold higher grades.
Nearby Lakes in Pinellas 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 Alligator Creek Lake under Clean Water Act (NPDES) discharge permits, including 1 classified by the EPA as major discharger. 1 facility has a reported Clean Water Act violation in the past three years.
- Clearwater City Of East AwwtpClearwater · 1.1 mi away · NPDES FL0021865MajorRecent 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: 2025-01-29
Monitoring stations: 1
Where to stay near Alligator Creek Lake
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