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Algae Test Results

The tables below contain blue-green algae and red tide results from water samples taken in Lee County by the Florida Department of Environmental Protection (DEP) and the Florida Fish and Wildlife Conservation Commission (FWC). Information on this page is updated periodically throughout the week. More current results may be available by visiting the DEP Florida Algal Bloom Site Visits map and the FWC Red Tide Current Status map.

Blue Green Algae Data
Datemicrograms/LLocation
3/10/20200.31Caloosahatchee-Alva Boat Ramp
3/10/2020not detectedCaloosahatchee-Franklin Locks Upstream

Table Data Last Modified: Fri Mar 20, 2020 15:37:29 EDT

Blue Green Algae Legend
LevelDescription
Greater than 8 micrograms/LPotential for health impact

Table Data Last Modified: Fri Jun 07, 2019 15:57:24 EDT

Red Tide Data
DateLevelLocation
3/23/2020not present Captiva Rocks; SW of (Pine Island Sound)
3/23/2020not present Hemp Key; S of (Pine Island Sound)
3/23/2020not present Cork Island; W of (Pine Island Sound)
3/23/2020not present Redfish Pass; 1.8 mi E of (Pine Island Sound)
3/23/2020not present Regla Island; W of (Pine Island Sound)
3/23/2020not present Buck Key; 1.9 mi NE of (Pine Island Sound)

Table Data Last Modified: Fri Mar 27, 2020 15:40:20 EDT

Red Tide Legend
LevelCells per LiterPossible Effects
Not present/Background0-1,000None Anticipated.
Very low>1,000-10,000Possible respiratory irritation; shellfish harvesting closures > 6 cells/mL.
Low>10,000-100,000Respiratory irritation; possible fish kills and bloom chlorophyll probably detected by satellites at upper range.
Medium>100,000-1,000,000Respiratory irritation and probably fish kills.
High>1,000,000As above plus discoloration

Table Data Last Modified: Tue May 14, 2019 07:41:11 EDT

Mobile Version of this Page

Please visit our red tide and blue-green algae pages for more information.

Sources:

DEP Florida Algal Bloom Site Visits

EPA Recommendations for Cyanobacteria and Cyanotoxin

FWC Red Tide Current Status Update

FWC Red Tide Current Status Map