St John'S Lake
Volusia County, FloridaLimited DataHypereutrophic
St John'S Lake is a highly nutrient-loaded hypereutrophic lake in Volusia County, Florida. Water quality is graded F based on 1 sampling years through 2024. Compared to the 76 other monitored lakes in Volusia County, St John'S Lake ranks #77 for water quality.
Source: EPA Water Quality Portal sampling records, Florida DNR, last sampled 2024-12-02. 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
No clarity data. Phosphorus level: 102 µg/L. Trophic State Index: 71.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | 102 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 #77 of 77 lakes in Volusia County
Cleaner Lakes Within 30 Miles
St John'S Lake holds Grade F. 5 nearby lakes hold higher grades.
- ASeminole-Silver LakeSeminole County · 4.5 mi · Two grade letters higher (F → A)
- BSeminole-Onora LakeSeminole County · 4.3 mi · Two grade letters higher (F → B)
- DOw-Ctr LakeSeminole County · 4.5 mi · Higher grade (F → D)
- DSeminole-Jesup North LakeSeminole County · 1.5 mi · Higher grade (F → D)
- DVolusia-Mud LakeVolusia County · 2.5 mi · Higher grade (F → D)
Nearby Lakes in Volusia County
More Florida Lake Rankings
Other Grade F Lakes in Florida
Hypereutrophic 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: 2024-12-02
Monitoring stations: 1
Where to stay near St John'S Lake
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