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Cyanobacteria advisory (harmful blue-green algae) reported, Oct 1, 2026

Advisory active · 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 3c1e7f22-1606-473d-affe-324d769a50a6, updated by the source Oct 1, 2026, 11:17 AM EDT, retrieved 2026-11-05 01:05 UTC · Read the original notice

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1. Where the advisory applies

Issued by: Florida Department of Environmental Protection (Algal Bloom Sampling). Place named: “Sweetwater Creek Branch - Coveridge Ln”. Location: 28.71058, -81.43735; location source: given in the source record, accurate to about 10 metres.

2. Waters named in the notice

The notice names: “Sweetwater Creek Branch”. Not linked to a mapped water. Name match too far (646.7 km; limit 12.0 km: the river record's extent (17.6 km, counted to 10 km) plus 2 km).

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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

Oct 1, 2026, 11:17 AM EDT

Ended

not reported

Detail provided by the source

Times known to the minute

Reported to the source

not given

Published

not given

Source last updated

Oct 1, 2026, 11:17 AM 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 active

Material

“algal bloom (Dominant taxon: Chlamydomonas sp.)”

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, Oct 1, 2026, 11:17 AM EDT to Oct 15, 2026, 11:17 AM EDT
• No current status shown a water not yet on the map: advisory not re-confirmed by its source recently, no map colour, Oct 15, 2026, 11:17 AM EDT to Dec 30, 2026, 10:17 AM EST (the end is scheduled: a new report can change it)

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

3c1e7f22-1606-473d-affe-324d769a50a6

Original notice

Read the original notice

Earlier version

None: this is the first record

Later versions

None

{
  "site": "Sweetwater Creek Branch - Coveridge Ln",
  "site_key": "sweetwater creek branch coveridge ln",
  "county": "Seminole",
  "group": "CEROC",
  "visits": [
    {
      "time": "2026-10-01T11:17:00-04:00",
      "globalid": "3c1e7f22-1606-473d-affe-324d769a50a6",
      "bloom_observed": "Yes",
      "toxin_present": "No",
      "microcystin": "not detected",
      "other_toxins": "Anatoxin-a: not detected; Cylindrospermopsin: not detected; Nodularin-R: not detected; Saxitoxins: not detected",
      "taxa": "Dominant taxon: Chlamydomonas sp.",
      "cyanobacteria_dominant": "No",
      "sample_depth": "SurfaceGrab",
      "group": "CEROC",
      "edited": "2026-11-04T02:38:33.648000-05:00"
    }
  ],
  "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."
}