Gator Lake Six Mile Cypress
Lee County, FloridaEutrophic
Gator Lake Six Mile Cypress is a productive, nutrient-rich eutrophic lake in Lee County, Florida. Water quality is graded C based on 2 sampling years through 2020. Compared to the 81 other monitored lakes in Lee County, Gator Lake Six Mile Cypress ranks #14 for water quality.
Source: EPA Water Quality Portal sampling records, Florida DNR, last sampled 2020-01-21. Grade methodology: LakeGrade methodology.
Watch Gator Lake Six Mile Cypress water quality
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Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Very murky, less than 3.3 ft of visibility. Phosphorus level: 43 µg/L. Trophic State Index: 59.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.3 ft | D |
| Phosphorus | 43 µg/L | C |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 59 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Location
County Ranking
Ranked #14 of 82 lakes in Lee County
Cleaner Lakes Within 30 Miles
Gator Lake Six Mile Cypress holds Grade C. 2 nearby lakes hold higher grades.
- BLee-Harborage West LakeLee County · 6.4 mi · Higher grade (C → B)
- BLee-Harborage East LakeLee County · 6.5 mi · Higher grade (C → B)
Nearby Lakes in Lee County
More Florida Lake Rankings
Other Grade C Lakes in Florida
Orange County · Clarity: 3.5 ft
Walton County · Clarity: 4.2 ft
Seminole County · Clarity: 4.5 ft
Seminole County · Clarity: 2.9 ft
Polk County · Clarity: 3.5 ft
Volusia County · Clarity: 4.5 ft
Eutrophic Lakes in Florida
Regulated Pollution Sources Nearby
4 EPA-permitted facilities operate within about 5 miles of Gator Lake Six Mile Cypress under Clean Water Act (NPDES) discharge permits, including 4 classified by the EPA as major dischargers. 1 facility has a reported Clean Water Act violation in the past three years.
- Fort Myers South AwwtpFort Myers · 3.5 mi away · NPDES FL0021270MajorRecent violation
- River Hall CddFort Myers · 1.9 mi away · NPDES FLS743607Major
- Lucaya CddFort Myers · 1.9 mi away · NPDES FLS743585Major
- Gateway Services CddFort Myers · 4.8 mi away · NPDES FLS266973Major
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: 2020-01-21
Monitoring stations: 1
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