California / Reports /

Cyanobacteria advisory (harmful blue-green algae) reported, Oct 14, 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 5386-3472, reported Oct 26, 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: “~1.1km below Ponderosa Way (509BCMCPD)”. Location: 39.87881, -121.70234; location source: given in the source record.

2. Waters named in the notice

The notice names: “Big Chico Creek”. 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 14, 2026

Ended

not reported

Detail provided by the source

Times known to the day only

Reported to the source

Oct 26, 2026, 12:00 AM PDT

Published

not given

Source last updated

Oct 26, 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 13, 2026, 9:00 PM PDT to Oct 20, 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

5386-3472

Original notice

Read the original notice

Earlier version

None: this is the first record

Later versions

None

{
  "Bloom_Report_ID": 5386,
  "Report_Type": "Agency/Partner Reporting",
  "Bloom_Date_Created": "2026-10-26T15:29:15.000",
  "Water_Body_Name": "Big Chico Creek",
  "Official_Water_Body_Name": null,
  "Landmark": "~1.1km below Ponderosa Way (509BCMCPD)",
  "County": "Butte",
  "Regional_Water_Board": "Region 5 - Central Valley",
  "Bloom_Latitude": 39.87881,
  "Bloom_Longitude": -121.70234,
  "Observation_Date": "2026-10-14",
  "Bloom_Texture": null,
  "Water_Body_Type": null,
  "Advisory_ID": 3472,
  "Advisory_Recommended": "None",
  "Advisory_Date": "2026-10-26",
  "AdvisoryStartDate": "2026-10-26",
  "AdvisoryEndDate": null,
  "AdvisoryDetail": null,
  "Advisory_Date_of_Recommendation": "2026-10-26",
  "Case_ID": 1864,
  "Case_Status": "Open",
  "Case_End_Date": null,
  "Last_Field_Result_Sample_Date": null
}