California / Reports /

Cyanobacteria advisory (harmful blue-green algae) reported, Oct 23, 2026

Not stated by the source · California State Water Resources Control Board (FHAB program)

Source: California State Water Resources Control Board (FHAB program) via Surface Water - Freshwater Harmful Algal Blooms, record 5388, reported Oct 28, 2026, 12:00 AM PDT, retrieved 2026-11-06 03:07 UTC · Read the original notice

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1. Where the advisory applies

Issued by: California State Water Resources Control Board (FHAB program). Place named: “Cypress ridge golf ciurse”. Location: 35.06801, -120.57361; location source: given in the source record.

2. Waters named in the notice

The notice names: “Lower avocet lake”. Not linked to a mapped water.

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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 23, 2026

Ended

not reported

Detail provided by the source

Times known to the day only

Reported to the source

Oct 28, 2026, 12:00 AM PDT

Published

not given

Source last updated

Oct 28, 2026, 12:00 AM PDT

Last retrieved by DirtyWaterWatch

2026-11-06 03:07 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

Not stated by the source

Advice from California State Water Resources Control Board (FHAB program)

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

• Caution a water not yet on the map: Advisory with no reported status, issued recently, Oct 22, 2026, 9:00 PM PDT to Oct 29, 2026, 9:00 PM PDT

Source: DirtyWaterWatch calculations using this report and the published status rules. Updated 2026-11-06 09:03 UTC.

Source and versions

Source

Surface Water - Freshwater Harmful Algal Blooms

Source record number

5388

Original notice

Read the original notice

Earlier version

None: this is the first record

Later versions

None

{
  "Bloom_Report_ID": 5388,
  "Report_Type": "Public Reporting",
  "Bloom_Date_Created": "2026-10-28T16:43:25.000",
  "Water_Body_Name": "Lower avocet lake",
  "Official_Water_Body_Name": null,
  "Landmark": "Cypress ridge golf ciurse",
  "County": "Amador; San Luis Obispo",
  "Regional_Water_Board": "Region 3 - Central Coast",
  "Bloom_Latitude": 35.06801,
  "Bloom_Longitude": -120.57361,
  "Observation_Date": "2026-10-23",
  "Bloom_Texture": "Floating mats; Stranded mats; Surface scum",
  "Water_Body_Type": null,
  "Advisory_ID": null,
  "Advisory_Recommended": null,
  "Advisory_Date": null,
  "AdvisoryStartDate": null,
  "AdvisoryEndDate": null,
  "AdvisoryDetail": null,
  "Advisory_Date_of_Recommendation": null,
  "Case_ID": 0,
  "Case_Status": null,
  "Case_End_Date": null,
  "Last_Field_Result_Sample_Date": null
}