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June 6-June 12–There were 53 reported site visits in the past seven days with 52 samples collected. Algal bloom conditions were observed by samplers at 14 of the sites.

The satellite imagery for Lake Okeechobee from 6/12 is partially obscured by cloud cover and shows low to moderate bloom potential on approximately 25% of the lake.

The most recent usable satellite imagery for the Caloosahatchee Estuary from 6/11 is partially obscured by cloud cover and shows no bloom potential on visible portions of the estuary.

The most recent usable satellite imagery for the St. Lucie Estuary from 6/11 is partially obscured by cloud cover and shows no bloom potential on visible portions of the estuary.

The most recent usable satellite imagery for the St. Johns River from 6/11 is partially obscured by cloud cover and shows moderate bloom potential throughout visible portions of Lake George and on the mainstem of the St. Johns River downstream to Flemming Island and on visible portions of Doctors Lake.

Please keep in mind that bloom potential is subject to change due to rapidly changing environmental conditions or satellite inconsistencies (i.e., wind, rain, temperature or stage).

On 6/9-6/11, Florida Department of Environmental Protection staff visited 13 sites and collected 12 Harmful Algal Bloom (HAB) response samples. Dominant algal taxa and cyanotoxin results follow each waterbody name.

Caloosahatchee River — Sebastian Canal: No dominant algal taxon; no cyanotoxins detected.

Lake Jackson — Rhoden Cove: Dolichospermum planctonicum and Synechocystis sp. co-dominant; no cyanotoxins detected.

Withlacoochee River — near Southwest State Road 200: Microcystis aeruginosa; no cyanotoxins detected.

Withlacoochee River — Centennial Park: Microcystis aeruginosa; no cyanotoxins detected.

Peace River — Wauchula: No dominant algal taxon; no cyanotoxins detected.

Withlacoochee River — Yacht Basin Park: Microcystis aeruginosa; trace level [0.34 parts per billion (ppb)] microcystins detected.

Broker Creek — behind Education Center: Not collected.

Keystone Lake — North Central: Microcystis aeruginosa; no cyanotoxins detected.

Dead Lake — South Cove: Microcystis aeruginosa; trace level (0.94 ppb) microcystins detected.

Dead Lake — Bull Creek Boat Ramp: Microcystis aeruginosa; trace level (0.99 ppb) microcystins detected.

Lake Broward — North East Lobe: No dominant algal taxon; no cyanotoxins detected.

Orange Lake — McIntosh Bay Fish Camp: Microcystis aeruginosa and Planktolyngbya limnetica co-dominant; trace level (0.87 ppb) microcystins detected.

Doctors Lake — Pace Island dock: Microcystis aeruginosa; 5.1 ppb microcystins detected.

On 6/9-6/11, South Florida Water Management District staff collected 29 routine HAB monitoring samples. Dominant algal taxa and cyanotoxin results follow each waterbody name.

C44 Canal — S308C: Glenodinium sp.; no cyanotoxins detected.

Lake Okeechobee — S308C (lakeside): No dominant algal taxon; no cyanotoxins detected.

C43 canal — S77 (upstream): No dominant algal taxon; no cyanotoxins detected.

Lake Okeechobee — CLV10A: Microcystis aeruginosa; no cyanotoxins detected.

Lake Okeechobee — LZ40: Microcystis aeruginosa; no cyanotoxins detected.

Lake Okeechobee — L006: Microcystis aeruginosa; no cyanotoxins detected.

Lake Okeechobee — PALMOUT3: Dolichospermum sp.; no cyanotoxins detected.

Lake Okeechobee — PALMOUT2: Dolichospermum sp.; no cyanotoxins detected.

Lake Okeechobee — PALMOUT1: No dominant algal taxon; no cyanotoxins detected.

Lake Okeechobee — PALMOUT: No dominant algal taxon; no cyanotoxins detected.

Lake Okeechobee — LZ30: Microcystis aeruginosa; no cyanotoxins detected.

Lake Okeechobee — POLE3S: No dominant algal taxon; no cyanotoxins detected.

Lake Okeechobee — L007: No dominant algal taxon; no cyanotoxins detected.

Lake Okeechobee — PELBAY3: Microcystis aeruginosa and Chlamydomonas sp. co-dominant; no cyanotoxins detected.

Lake Okeechobee — KISSR0.0: Microcystis wesenbergii and Planktolyngbya limnetica co-dominant; no cyanotoxins detected.

Lake Okeechobee — LZ2: Planktolyngbya limnetica; no cyanotoxins detected.

Lake Okeechobee — NES191: Dolichospermum circinale and Planktolyngbya limnetica co-dominant; no cyanotoxins detected.

Lake Okeechobee — L001: Planktolyngbya limnetica; no cyanotoxins detected.

Lake Okeechobee — NES135: Planktolyngbya limnetica; no cyanotoxins detected.

Lake Okeechobee — NCENTER: Planktolyngbya limnetica; no cyanotoxins detected.

Lake Okeechobee — EASTSHORE: No dominant algal taxon; no cyanotoxins detected.

Lake Okeechobee — L004: Microcystis aeruginosa; no cyanotoxins detected.

Lake Okeechobee — L008: Microcystis aeruginosa; no cyanotoxins detected.

Lake Okeechobee — L005: Dolichospermum sp.; no cyanotoxins detected.

Lake Okeechobee — POLESOUT3: Microcystis aeruginosa; no cyanotoxins detected.

Lake Okeechobee — POLESOUT2: Planktolyngbya limnetica; no cyanotoxins detected.

Lake Okeechobee — POLESOUT1: Dolichospermum sp. and Planktolyngbya limnetica co-dominant; no cyanotoxins detected.

Lake Okeechobee — POLESOUT: Dolichospermum sp. and Planktolyngbya limnetica co-dominant; no cyanotoxins detected.

Lake Okeechobee — KBARSE: Microcystis aeruginosa; no cyanotoxins detected.

On 6/10-6/11, St. Johns River Water Management District staff collected nine routine HAB samples and two HAB response samples. Dominant algal taxa and cyanotoxin results follow each waterbody name.

Lake Monroe — Center: Dolichospermum sp. and Planktolyngbya limnetica co-dominant; 0.41 ppb cylindrospermopsin detected.

Lake George — Center: Microcystis aeruginosa and Raphidiopsis raciborskii co-dominant; trace level (0.37 ppb) cylindrospermopsin detected.

Lake Jesup — Center: Microcystis sp. and Raphidiopsis raciborskii co-dominant; no cyanotoxins detected.

Blue Cypress Lake — Center: Microcystis wesenbergii; no cyanotoxins detected.

Stick Marsh — North: No dominant algal taxon; no cyanotoxins detected.

Crescent Lake — mouth of Dunns Creek: Microcystis aeruginosa; trace level (0.47 ppb) microcystins detected.

St. Johns River — South of U.S. Highway 17 Bridge: Microcystis flos-aquae and Planktolyngbya limnetica co-dominant; trace level (0.21 ppb) of cylindrospermopsin detected.

St. Johns River — Mandarin Point: No dominant algal taxon; no cyanotoxins detected.

Doctors Lake — Center: Microcystis aeruginosa and Planktolyngbya limnetica co-dominant; 5.6 ppb microcystins detected.

St. Johns River — Shands Bridge: Microcystis aeruginosa and Raphidiopsis raciborskii co-dominant; trace level (0.39 ppb) of cylindrospermopsin detected.

St Johns River — Racy Point: Raphidiopsis raciborskii and Planktolyngbya limnetica co-dominant; trace level (0.39 ppb) of cylindrospermopsin detected.

Results for completed analyses are available at FloridaDEP.gov/AlgalBloom. 

This is a high-level summary of the sampling events for the reported week. For all field visit and analytical result details, please refer to the complete algal bloom map with data table by clicking the “Field and Lab Details” Quick Link from the Algal Bloom Dashboard. Different types of blue-green algal bloom species can look different and have different impacts. However, regardless of species, many types of blue-green algae can produce toxins that can make you or your pets sick if swallowed or possibly cause skin and/or eye irritation due to contact. We advise staying out of water where algae is visibly present as specks or mats or where water is discolored pea-green, blue-green or brownish-red. Additionally, pets or livestock should not come into contact with algal bloom-impacted water or with algal bloom material or fish on the shoreline.

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Last Modified: Friday, Jun 13, 2025 - 02:38pm