What is the water quality grade for Sarasota-Cormorant Lake?

Sarasota-Cormorant Lake in Sarasota County, Florida received a water quality grade of F (Very Poor). Water clarity: 2.4 ft visibility. Phosphorus: 164.5 µg/L.

Is Sarasota-Cormorant Lake safe to swim in?

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

Sarasota-Cormorant Lake

Sarasota County, FloridaHypereutrophic

Sarasota-Cormorant Lake is a highly nutrient-loaded hypereutrophic lake in Sarasota County, Florida. Water quality is graded F based on 2 sampling years through 2025. Compared to the 37 other monitored lakes in Sarasota County, Sarasota-Cormorant Lake ranks #27 for water quality.

Source: EPA Water Quality Portal sampling records, Florida DNR, last sampled 2025-02-11. 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 2.4 ft of visibility. Phosphorus level: 164.5 µg/L. Trophic State Index: 71.

Metric	Value	Grade
Water Clarity (Secchi Depth)	2.4 ft	F
Phosphorus	164.5 µg/L	F
Chlorophyll-a (Algae)	No data
Trophic State Index (TSI)	71	Hypereutrophic

Very high nutrients, dense algae, poor clarity

Location

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County Ranking

Ranked #27 of 38 lakes in Sarasota County

Cleaner Lakes Within 30 Miles

Sarasota-Cormorant Lake holds Grade F. 5 nearby lakes hold higher grades.

See full comparison →

Nearby Lakes in Sarasota County

Sarasota-Spoonbill Lake

Sarasota County

Sarasota-Moondrop Lake

Sarasota County

Sarasota-Sundrop Lake

Sarasota County

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

Data Sources

Water quality data from the EPA Water Quality Portal

Grading methodology based on Metropolitan Council standards

Most recent sample: 2025-02-11

Monitoring stations: 3

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