Cyanobacteria advisory (harmful blue-green algae) reported, Aug 18, 2026

Advisory lifted · Florida Department of Environmental Protection (Algal Bloom Sampling)

Source: Florida Department of Environmental Protection (Algal Bloom Sampling) via Florida DEP Algal Bloom Sampling, blooms and toxins by site, record e9fdabcd-0410-41c1-8d6b-a4f3a7ffc403, updated by the source Sep 15, 2026, 12:23 PM EDT, retrieved 2026-11-05 01:05 UTC · Read the original notice

Current status from this report

This report does not set a map status as of Nov 4, 2026, 8:25 PM EST. Check its dates and the status rules.

A report is not a test of the water. See how we assign statuses.

Read the original notice · Report an error

1. Where the advisory applies

Issued by: Florida Department of Environmental Protection (Algal Bloom Sampling). Place named: “Lake Okeechobee - POLESOUT1”. Location: 27.02569, -80.89909; location source: given in the source record, accurate to about 10 metres.

2. Waters named in the notice

The notice names: “Lake Okeechobee”. DirtyWaterWatch links this report to Lake Okeechobee, FL. Match basis: the water named in the report.

Map sources: water outlines and launches from OpenBoatLaunch and OpenStreetMap contributors (Open Database License); wastewater outlets from EPA and state records; downstream estimates by DirtyWaterWatch using U.S. Geological Survey maps and flow data. Base map: OpenFreeMap and OpenMapTiles.

Open on the main map

When it happened and when it was reported

Event and notice times use Eastern Time (EST or EDT). Retrieval times use Coordinated Universal Time (UTC).

Started: Aug 18, 2026, 12:43 PM EDT
Ended: Oct 6, 2026, 12:55 PM EDT
Detail provided by the source: Times known to the minute
Reported to the source: not given
Published: not given
Source last updated: Sep 15, 2026, 12:23 PM EDT
Last retrieved by DirtyWaterWatch: 2026-11-05 01:05 UTC

What was reported

Type: Cyanobacteria (harmful blue-green algae) can make water unfit for contact; the issuing authority decides when its advisory ends.
Status in the record: Advisory lifted
Material: “algal bloom (Co-dominant taxa were: Raphidiopsis raciborskii and Planktolyngbya limnetica; Co-dominant taxa were: Microcystis aeruginosa and Planktolyngbya limnetica)”

Advice from Florida Department of Environmental Protection (Algal Bloom Sampling)

This report includes no advice. Check current local health notices.

Advice period: This report does not state a period. See the rule DirtyWaterWatch applies and its source.
Basis: not stated

Status history from this report

Discharge or advisory reported a water not yet on the map: Official advisory in effect, Aug 18, 2026, 12:43 PM EDT to Oct 6, 2026, 12:55 PM EDT

Source: DirtyWaterWatch calculations using this report and the published status rules. Updated 2026-11-05 01:25 UTC.

Source and versions

Source: Florida DEP Algal Bloom Sampling, blooms and toxins by site
Source record number: e9fdabcd-0410-41c1-8d6b-a4f3a7ffc403
Original notice: Read the original notice
Earlier version: None: this is the first record
Later versions: None

Record details

Record details
Record identifier	fl-dep-habs:e9fdabcd-0410-41c1-8d6b-a4f3a7ffc403
Source identifier	fl-dep-habs
Source record number	e9fdabcd-0410-41c1-8d6b-a4f3a7ffc403
Earlier version	Not provided
Type	Cyanobacteria advisory (harmful blue-green algae)
Status in the report	Advisory lifted
Sewer operator identifier	Not provided
Sewer operator	Not provided
Federal wastewater discharge permit (NPDES)	Not provided
Outlet number	Not provided
Outlet name	Lake Okeechobee - POLESOUT1
Water named in the report	Lake Okeechobee
Linked waters	lake-okeechobee-fl
How this report was linked to the water	the water named in the report
Latitude	27.026
Longitude	-80.899
Location source	given in the source record
Location accuracy, in metres	10
Started	Aug 18, 2026, 12:43 PM EDT (2026-08-18T12:43:00-04:00)
Ended	Oct 6, 2026, 12:55 PM EDT (2026-10-06T12:55:00-04:00)
Detail provided by the source	to the minute
Reported to the source	Not provided
Published	Not provided
Source last updated	Sep 15, 2026, 12:23 PM EDT (2026-09-15T12:23:00-04:00)
Last retrieved by DirtyWaterWatch	Nov 4, 2026, 8:05 PM EST (2026-11-05T01:05:45Z)
Material	algal bloom (Co-dominant taxa were: Raphidiopsis raciborskii and Planktolyngbya limnetica; Co-dominant taxa were: Microcystis aeruginosa and Planktolyngbya limnetica)
Volume, in gallons	Not provided
Volume as reported	Not provided
How volume was determined	not stated whether estimated or measured
Authority	Florida Department of Environmental Protection (Algal Bloom Sampling)
Advice	Not provided
Advice period, in hours	Not provided
Basis of the advice period	Not provided
Original notice	https://services1.arcgis.com/nRHtyn3uE1kyzoYc/arcgis/rest/services/AlgalBloom_Final_View/FeatureServer/0/query?where=globalid%3D%27e9fdabcd-0410-41c1-8d6b-a4f3a7ffc403%27&outFields=objectid,globalid,SampleDateTime,MonitoringGroupPublicFacing,County,esrignss_latitude,esrignss_longitude,BloomObserved,MeterReadingsOnly,SampleDepthDesc,AnalyzedBy,AlgalIDResult,ToxinPresent,Microcystin,OtherToxin,locationString,EditDate,CyanobacteriaDominant&f=json

Original source data

{
  "site": "Lake Okeechobee - POLESOUT1",
  "site_key": "lake okeechobee polesout1",
  "county": "Glades",
  "group": "SFWMD",
  "visits": [
    {
      "time": "2026-08-18T12:43:00-04:00",
      "globalid": "e9fdabcd-0410-41c1-8d6b-a4f3a7ffc403",
      "bloom_observed": "No",
      "toxin_present": "Yes",
      "microcystin": "not detected",
      "other_toxins": "Anatoxin-a: not detected; Cylindrospermopsin: 0.13 I (I qualifier indicates that the reported value is between the laboratory method detection limit and the laboratory practical quantitation limit.); Nodularin-R: not detected; Saxitoxins: not detected",
      "taxa": "Co-dominant taxa were: Raphidiopsis raciborskii and Planktolyngbya limnetica",
      "cyanobacteria_dominant": "Yes",
      "sample_depth": "SurfaceGrab",
      "group": "SFWMD",
      "edited": "2026-09-15T14:18:10.226000-04:00"
    },
    {
      "time": "2026-09-01T12:25:00-04:00",
      "globalid": "77b0510a-e61a-421a-9516-a5337cd70a4b",
      "bloom_observed": "No",
      "toxin_present": "Yes",
      "microcystin": "not detected",
      "other_toxins": "Anatoxin-a: not detected; Cylindrospermopsin: 0.73; Nodularin-R: not detected; Saxitoxins: not detected",
      "taxa": "Co-dominant taxa were: Raphidiopsis raciborskii and Planktolyngbya limnetica",
      "cyanobacteria_dominant": "Yes",
      "sample_depth": "SurfaceGrab",
      "group": "SFWMD",
      "edited": "2026-09-15T14:21:11.409000-04:00"
    },
    {
      "time": "2026-09-15T12:23:00-04:00",
      "globalid": "a6002e9f-eb47-4233-b28c-c922b6356666",
      "bloom_observed": "No",
      "toxin_present": "Yes",
      "microcystin": "not detected",
      "other_toxins": "Anatoxin-a: not detected; Cylindrospermopsin: 0.81; Nodularin-R: not detected; Saxitoxins: not detected",
      "taxa": "Co-dominant taxa were: Raphidiopsis raciborskii and Planktolyngbya limnetica",
      "cyanobacteria_dominant": "Yes",
      "sample_depth": "SurfaceGrab",
      "group": "SFWMD",
      "edited": "2026-09-17T17:32:32.460000-04:00"
    },
    {
      "time": "2026-10-06T12:55:00-04:00",
      "globalid": "275f6204-08f8-42e2-91ac-e82e7b81a632",
      "bloom_observed": "No",
      "toxin_present": "No",
      "microcystin": "not detected",
      "other_toxins": "Anatoxin-a: not detected; Cylindrospermopsin: not detected; Nodularin-R: not detected; Saxitoxins: not detected",
      "taxa": "Co-dominant taxa were: Microcystis aeruginosa and Planktolyngbya limnetica",
      "cyanobacteria_dominant": "Yes",
      "sample_depth": "SurfaceGrab",
      "group": "SFWMD",
      "edited": "2026-10-21T16:56:58.093000-04:00"
    }
  ],
  "basis": "Florida DEP observed an algal bloom, or found an algal toxin, in a sample at this site. This is a sampling result, not a health advisory; the Florida Department of Health issues health alerts separately.",
  "ended_at_basis": "the next visit found no bloom and no toxin"
}

Staff names, email addresses and phone numbers are removed from source data before it is stored.