Cyanobacteria advisory (harmful blue-green algae) reported, Nov 2, 2026

Advisory lifted · Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations)

Source: Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations), record cyano:29935532-9ae3-4388-8733-ec9bb6279309, reported Nov 3, 2026, 1:40 PM EST, retrieved 2026-11-05 06:15 UTC · Read the original notice

Current status from this report

Earlier version. A later record from the same source replaces this one. The newest version sets the map status. read the newer version

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: Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations). Location: 43.72867, -72.61833; location source: given in the source record.

2. Waters named in the notice

The notice names: “Silver Lake”. DirtyWaterWatch links this report to Silver Lake, VT. 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: Nov 2, 2026, 11:18 AM EST
Ended: Nov 4, 2026, 12:38 PM EST
Detail provided by the source: Times known to the minute
Reported to the source: Nov 3, 2026, 1:40 PM EST
Published: not given
Source last updated: Nov 3, 2026, 1:40 PM EST
Last retrieved by DirtyWaterWatch: 2026-11-05 06:15 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: “cyanobacteria (visual observation)”

Advice from Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations)

“Vermont Department of Health tracker legend: High Alert means a lot of cyanobacteria were observed collecting into a dense bloom that extends at least 10-15 feet offshore.”
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations)

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

Source and versions

Source: Cyanobacteria Tracker; volunteer and staff observations
Source record number: cyano:29935532-9ae3-4388-8733-ec9bb6279309
Original notice: Read the original notice
Earlier version: Read the earlier version
Later versions: version 2

Record details

Record details
Record identifier	vt-advisories:cyano:29935532-9ae3-4388-8733-ec9bb6279309
Source identifier	vt-advisories
Source record number	cyano:29935532-9ae3-4388-8733-ec9bb6279309
Earlier version	vt-advisories:cyano:533299c4-afe3-4d0e-8688-f03d3056e7d6
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	Not provided
Water named in the report	Silver Lake
Linked waters	silver-lake-vt
How this report was linked to the water	the water named in the report
Latitude	43.729
Longitude	-72.618
Location source	given in the source record
Location accuracy, in metres	Not provided
Started	Nov 2, 2026, 11:18 AM EST (2026-11-02T11:18:00-05:00)
Ended	Nov 4, 2026, 12:38 PM EST (2026-11-04T12:38:00-05:00)
Detail provided by the source	to the minute
Reported to the source	Nov 3, 2026, 1:40 PM EST (2026-11-03T13:40:00-05:00)
Published	Not provided
Source last updated	Nov 3, 2026, 1:40 PM EST (2026-11-03T13:40:00-05:00)
Last retrieved by DirtyWaterWatch	Nov 5, 2026, 1:15 AM EST (2026-11-05T06:15:32Z)
Material	cyanobacteria (visual observation)
Volume, in gallons	Not provided
Volume as reported	Not provided
How volume was determined	not stated whether estimated or measured
Authority	Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations)
Advice	Quoted in full above
Advice period, in hours	Not provided
Basis of the advice period	Not provided
Original notice	https://www.healthvermont.gov/environment/tracking/cyanobacteria-blue-green-algae-tracker

Original source data

{
  "OBJECTID": 3604,
  "ReportDate": 1793731200000,
  "Waterbody": "Silver Lake",
  "Municipality": "Barnard",
  "SiteName": "Barnard General Store Recreation Area",
  "StatusWeb": "High Alert",
  "GlobalID": "29935532-9ae3-4388-8733-ec9bb6279309"
}

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