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The UPPER PORTION OF THE NORTH ANNA RIVER IS UNDER A VIRGinia department of health (vdh) RECREATIONAL ADVISORY.

The most recent cyanobacteria monitoring was conducted by the Virginia Department of Environmental Quality (DEQ) on July 16th. VDH issued a
HAB status report on July 22nd and an update to add Terry's Run
to the areas under advisory on July 23rd.

Sampling at 5 sites in the Upper & Middle North Anna & Pamunkey branches occurred on 7/16/2024. Results for the five sites contained
cyanobacteria cell counts at levels that exceed VDH's threshold
for issuing a recreational advisory. 

Samples were not collected on Terry’s Run, however, DEQ confirmed visual observation of cyanobacteria presence, and a citizen observation report
was received on July 23. VDH issued an advisory for Terry’s Run
in an abundance of caution on 7/23/24.

A sample collected at the Lake Anna State Park contained results that were acceptable. 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 August 5th.

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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