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Cyanobacteria advisory (harmful blue-green algae) reported

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:f4f08317-eb74-4998-8339-a479c44b0520, reported Nov 3, 2026, 2:20 PM EST, retrieved 2026-11-05 06:15 UTC · Read the original notice

Current status from this report

This report does not set a map status as of Nov 5, 2026, 1:27 AM EST. Check its dates and the status rules.

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

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1. Where the advisory applies

Issued by: Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations). Location: 44.94288, -72.22629; location source: given in the source record.

2. Waters named in the notice

The notice names: “Lake Memphremagog”. DirtyWaterWatch links this report to Lac Memphrémagog, 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.

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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
not reported
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 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: Generally Safe means no blooms were observed, but there may have been tiny specks of cyanobacteria observed in the water. Conditions can and do change.”

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:f4f08317-eb74-4998-8339-a479c44b0520
Original notice
Read the original notice
Earlier version
Read the earlier version
Later versions
None

Record details

Record details
Record identifiervt-advisories:cyano:f4f08317-eb74-4998-8339-a479c44b0520
Source identifiervt-advisories
Source record numbercyano:f4f08317-eb74-4998-8339-a479c44b0520
Earlier versionvt-advisories:cyano:f5f4e4b4-4972-43ba-8fc7-6e06d8163206
TypeCyanobacteria advisory (harmful blue-green algae)
Status in the reportAdvisory lifted
Sewer operator identifierNot provided
Sewer operatorNot provided
Federal wastewater discharge permit (NPDES)Not provided
Outlet numberNot provided
Outlet nameNot provided
Water named in the reportLake Memphremagog
Linked waterslac-memphremagog-vt
How this report was linked to the waterthe water named in the report
Latitude44.943
Longitude-72.226
Location sourcegiven in the source record
Location accuracy, in metresNot provided
StartedNot provided
EndedNot provided
Detail provided by the sourceto the minute
Reported to the sourceNov 3, 2026, 2:20 PM EST (2026-11-03T14:20:00-05:00)
PublishedNot provided
Source last updatedNov 3, 2026, 2:20 PM EST (2026-11-03T14:20:00-05:00)
Last retrieved by DirtyWaterWatchNov 5, 2026, 1:15 AM EST (2026-11-05T06:15:32Z)
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)
AdviceQuoted in full above
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": 3603,
  "ReportDate": 1793733600000,
  "Waterbody": "Lake Memphremagog",
  "Municipality": "Newport",
  "SiteName": "Farrant Street North",
  "StatusWeb": "Generally Safe",
  "GlobalID": "f4f08317-eb74-4998-8339-a479c44b0520"
}

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