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

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

Source: Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations), record cyano:9a06ae6f-9402-478d-80e9-4ac9588d8e7b, reported Nov 2, 2026, 11:18 AM EST, retrieved 2026-11-02 21:21 UTC · Read the original notice

Current status from this report

Discharge or advisory reported on Silver Lake: Official advisory in effect. Current rule period ends Nov 16, 2026, 11:18 AM EST. This is not a water-quality test.

Why this status: Discharge or advisory reported: official advisory.

Why we use this rule: An official advisory is listed. We show it while the authority keeps it in place; an old or missing update does not mean the advisory was lifted.

How long each status lasts, and why

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

Read the original notice · Report an error

1. Reported wastewater outlet

Operator named in the record: not named. Outlet: not stated. Location: 43.72867, -72.61833; location source: given in the source record.

Outfall: a pipe or outlet where wastewater enters a water body.

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.

3. Estimated downstream stretch

We estimate routes only on rivers before they become tidal. We do not estimate routes through tidal water or lakes.

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
Ended
not reported
Detail provided by the source
Times known to the minute
Reported to the source
Published
not given
Source last updated
Last retrieved by DirtyWaterWatch

What and how much

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
“cyanobacteria (visual observation)”
Volume
volume not reported (not stated whether estimated or measured)
Volume as reported
none

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

“Vermont Department of Health tracker legend: Low Alert means that some cyanobacteria were observed collecting in a contained area, but no widespread bloom conditions were observed.”

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

Status history from this report

Source: DirtyWaterWatch calculations using this report and the published status rules. Updated 2026-11-02 21:26 UTC.

Source and versions

Source
Cyanobacteria Tracker; volunteer and staff observations
Source record number
cyano:9a06ae6f-9402-478d-80e9-4ac9588d8e7b
Original notice
Read the original notice
Earlier version
Read the earlier version
Later versions
None

Record details

Record details
Record identifiervt-advisories:cyano:9a06ae6f-9402-478d-80e9-4ac9588d8e7b
Source identifiervt-advisories
Source record numbercyano:9a06ae6f-9402-478d-80e9-4ac9588d8e7b
Earlier versionvt-advisories:cyano:dbeff2b0-fd4a-4a92-87e3-268cf320995e
TypeCyanobacteria advisory (harmful blue-green algae)
Status in the reportAdvisory active
Sewer operator identifierNot provided
Sewer operatorNot provided
Federal wastewater discharge permit (NPDES)Not provided
Outlet numberNot provided
Outlet nameNot provided
Water named in the reportSilver Lake
Linked waterssilver-lake-vt
How this report was linked to the waterthe water named in the report
Latitude43.729
Longitude-72.618
Location sourcegiven in the source record
Location accuracy, in metresNot provided
StartedNov 2, 2026, 11:18 AM EST (2026-11-02T11:18:00-05:00)
EndedNot provided
Detail provided by the sourceto the minute
Reported to the sourceNov 2, 2026, 11:18 AM EST (2026-11-02T11:18:00-05:00)
PublishedNot provided
Source last updatedNov 2, 2026, 11:18 AM EST (2026-11-02T11:18:00-05:00)
Last retrieved by DirtyWaterWatchNov 2, 2026, 4:21 PM EST (2026-11-02T21:21:46Z)
Materialcyanobacteria (visual observation)
Volume, in gallonsNot provided
Volume as reportedNot provided
How volume was determinednot stated whether estimated or measured
AuthorityVermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations)
AdviceVermont Department of Health tracker legend: Low Alert means that some cyanobacteria were observed collecting in a contained area, but no widespread bloom conditions were observed.
Advice period, in hoursNot provided
Basis of the advice periodNot provided
Original noticehttps://www.healthvermont.gov/environment/tracking/cyanobacteria-blue-green-algae-tracker

Original source data

{
  "OBJECTID": 3597,
  "ReportDate": 1793636280000,
  "Waterbody": "Silver Lake",
  "Municipality": "Barnard",
  "SiteName": "Barnard General Store Recreation Area",
  "StatusWeb": "Low Alert",
  "GlobalID": "9a06ae6f-9402-478d-80e9-4ac9588d8e7b",
  "_layer": "Cyanobacteria_Current_Approved_Reports_View",
  "_site_key": "cyano:silver-lake-barnard-barnard-general-store-recreation-area",
  "_match_notes": null,
  "_layer_data_last_edit": "2026-11-02T20:59:11.927000Z",
  "_was_active": true
}

Source: Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations), record cyano:9a06ae6f-9402-478d-80e9-4ac9588d8e7b, reported Nov 2, 2026, 11:18 AM EST, retrieved 2026-11-02 21:21 UTC · Read the original notice

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