What is the water quality grade for Lake Vedra?

Lake Vedra in St. Johns County, Florida received a water quality grade of F (Very Poor). Water clarity: 2.3 ft visibility. Phosphorus: 360 µg/L.

Is Lake Vedra safe to swim in?

Avoid swimming, very poor water quality, potential algae toxins. Lake Vedra has an overall water quality grade of F. Always check local health department advisories before swimming.

Lake Vedra

St. Johns County, FloridaHypereutrophic

Lake Vedra is a highly nutrient-loaded hypereutrophic lake in St. Johns County, Florida. Water quality is graded F based on 2 sampling years through 2024. Compared to the 7 other monitored lakes in St. Johns County, Lake Vedra ranks #6 for water quality.

Source: EPA Water Quality Portal sampling records, Florida DNR, last sampled 2024-11-13. 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 2.3 ft of visibility. Phosphorus level: 360 µg/L. Trophic State Index: 77.

Metric	Value	Grade
Water Clarity (Secchi Depth)	2.3 ft	F
Phosphorus	360 µg/L	F
Chlorophyll-a (Algae)	No data
Trophic State Index (TSI)	77	Hypereutrophic

Very high nutrients, dense algae, poor clarity

Location

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County Ranking

Ranked #6 of 8 lakes in St. Johns County

Cleaner Lakes Within 30 Miles

Lake Vedra holds Grade F. 2 nearby lakes hold higher grades.

See full comparison →

Nearby Lakes in St. Johns County

Micklers Lake

St. Johns County

Duv-Queensharlag Lake

More Florida Lake Rankings

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Top 25 by overall water quality score

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Grade A/B + low algae filter

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Panfish-rich, public access

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Other Grade F Lakes in Florida

Polk-Little Bass Lake

Polk County · Clarity: 1.3 ft

Polk-Big Bass Lake

Polk County · Clarity: 1 ft

Alachua-Wauberg Lake

Alachua County · Clarity: 2.4 ft

Lake Roberta

Hillsborough County · Clarity: 1.3 ft

Volusia Lake George @ N of Center

Volusia County · Clarity: 2 ft

Lwc Lake

Brevard County · Clarity: 1.6 ft

Hypereutrophic Lakes in Florida

Polk-Little Bass Lake Alicetst Lake Polk-Big Bass Lake Lake Roberta

Regulated Pollution Sources Nearby

5 EPA-permitted facilities operate within about 5 miles of Lake Vedra under Clean Water Act (NPDES) discharge permits, including 2 classified by the EPA as major dischargers. 3 facilities have a reported Clean Water Act violation in the past three years.

Jacksonville Beach Wwtf
Jacksonville Beach · 3.7 mi away · NPDES FL0020231
MajorRecent violation
Jacksonville Beach, City Of - MS4
Jacksonville Beach · 4.4 mi away · NPDES FLS000013
Major
Ponte Vedra Wrf
Ponte Vedra Beach · 1.1 mi away · NPDES FL0117951
Recent violation
Marsh Landing Wwtf
Ponte Vedra Beach · 1.6 mi away · NPDES FL0044253
Recent violation
Innlet Beach Wwtf
Ponte Vedra Beach · 1 mi away · NPDES FL0044237

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: 2024-11-13

Monitoring stations: 1

Where to stay near Lake Vedra

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