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Algae Test Results-old
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.
Health Alerts are issued when the presence of toxins are confirmed in the water.
| 8/16/2021 | not detected | C43 canal - S79 (upstream) |
|---|
Table Data Last Modified: Fri Sep 10, 2021 16:37:27 EDT
| Date | Level | Location |
|---|---|---|
| 07/09 | LOW | Boca Grande Beach |
| 07/13 | VERY LOW | Boca Grande Pass |
| 07/10 | VERY LOW | Boca Grande Pass; 1.3 mi E of (Charlotte Harbor) |
| 07/13 | not present | Little Bokeelia Island; N of (Charlotte Harbor) |
| 07/13 | LOW | Mondongo Island; W of (Pine Island Sound) |
| 07/13 | not present | Ben Coleman Keys (Matlacha Pass) |
| 07/13 | not present | Porpoise Point Island; SW of (Matlacha Pass) |
| 07/13 | VERY LOW | Captiva Pass |
| 07/13 | not present | Captiva Rocks; SW of (Pine Island Sound) |
| 07/13 | BACKGROUND | Hemp Key; S of (Pine Island Sound) |
| 07/13 | not present | Cork Island; W of (Pine Island Sound) |
| 07/13 | not present | Deer Stop Keys; SW of (Matlacha Pass) |
| 07/13 | BACKGROUND | Redfish Pass; 1.8 mi E of (Pine Island Sound) |
| 07/13 | VERY LOW | Redfish Pass (Pine Island Sound) |
| 07/13 | not present | Buck Key; 1.9 mi NE of (Pine Island Sound) |
| 07/14 | BACKGROUND | South Seas Plantation Entrance |
| 07/13 | not present | Buck Key; S of (Blind Pass) |
| 07/14 | not present | Lynn Hall Park |
| 07/14 | not present | Lighthouse Beach |
| 07/14 | not present | Tarpon Bay Road Beach |
| 07/14 | not present | Lovers Key State Park |
| 07/14 | not present | Bonita Beach Park |
Table Data Last Modified: Fri Jul 23, 2021 15:35:18 EDT
| Level | Cells per Liter | Possible Effects |
|---|---|---|
| Not present/Background | 0-1,000 | None Anticipated. |
| Very low | >1,000-10,000 | Possible respiratory irritation; shellfish harvesting closures > 6 cells/mL. |
| Low | >10,000-100,000 | Respiratory irritation; possible fish kills and bloom chlorophyll probably detected by satellites at upper range. |
| Medium | >100,000-1,000,000 | Respiratory irritation and probably fish kills. |
| High | >1,000,000 | As above plus discoloration |
Table Data Last Modified: Tue May 14, 2019 07:41:11 EDT
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
Connect with DOH