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The most recent cyanobacteria monitoring was conducted by the Virginia Department of Environmental Quality (DEQ) on August 6th. VDH issued a
HAB status report on August 9th.

The most recent sampling event for Lake Anna occurred 8/6/2024 at 4 sites
on the Pamunkey Branch, 2 sites in the North Anna Branch, and 1 site on
Terry's Run Branch.

The samples collected at the Middle Pamunkey Branch and Lake Anna
State Park (lower Pamunkey) sites contained results that were acceptable
for cell concentrations. Samples at all other sites indicated a
cyanobacteria bloom with cell concentrations at unsafe levels.

One additional acceptable sample collected at the Middle Pamunkey Branch
site is first of two samples necessary for the advisory to be lifted for that lake segment.

All cyanotoxin results were below detectable levels.

The HAB map and this status report have been updated and
are posted at www.SwimHealthyVA.com. The next sample event
is anticipated for on or about the week of September 16th.

the current hab status report is available here
or at the vdh website.

To submit a HAB report or scum sighting, utilize the online report form located at the VDH website.

The Google Earth polygons used by the VDH to issue advisory areas are included in the .kmz file linked below:

VDH Google Earth Polygons


The Lake Anna Bloom status report has been updated on the website under the quick links page of the HAB website.

Please bookmark www.SwimHealthyVa.com site, and use this page to stay up to date on HAB updates.

You can view the current status of HAB events throughout Virginia on VDA's HAB map.

Report suspected HAB-related HEALTH complaint to the HAB Hotline 1-888-238-6154. All requests for HAB sampling updates received on the HAB hotline will be referred to the website.

A few reminders on reporting and resources:

To submit a HAB report or scum sighting, utilize the online report form.

VDH has many HAB resources available via the HAB resources list on their website, including talking points, signage, and brochures. If you are contacted for information, please point citizens to these resources.

Citizen reports called “Crowd-Sourced Reports” are displayed on the VDH HAB Map online, represented by blue dots on the map. 

If you see what you suspect to be an algae bloom, please report it to the Virginia Department of Health, even if a Recreational Advisory is already in place near your property.  Use the HAB Online Report Form and submit weekly updates with images to keep VDH up to date.   A report must be based on current conditions - a report that documents a past condition (defined as greater than 48 hours in the past) will be rejected by VDH.  Submit reports to VDH using the online reporting form within 24-48 hours of the algae bloom condition. 

Geographic coordinates are required when you submit a report.  You can use Google Maps, or other mapping tools, to provide the latitude and longitude of the location. 

Also - and this is essential - include a picture of the algae/scum condition with your report.


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