06/21/2024
Lake Anna News Alert...
The most recent sampling event for Lake Anna occurred 6/17/2024 at four sites in the Upper & Middle North Anna & Pamunkey Branches. Results for one site in the Upper North Anna Branch, which represents the waterbody from the headwaters of North Anna River to the Rte. 522 bridge, contained cyanobacteria at levels which pose a health concern. One cyanotoxin was detected at both Upper North Anna and Pamunkey Branch sites but were below levels of health concern. As a result the Virginia Department of Health has issued a no swim advisory on 6/21/2024 for Upper North Anna Branch.
Results for one site in the Upper North Anna Branch, which represents the waterbody from the headwaters of North Anna River to the Rte. 522 bridge, contained *cyanobacteria cell densities at levels which pose a health concern.
*Cell densities of an identified cyanobacteria species were above an actionable VDH threshold
One **cyanotoxin was detected at both Upper North Anna and Pamunkey Branch sites, but concentrations were below levels of health concern. An advisory was issued on 6/21/2024 for Upper North Anna Branch.
**A particular cyanotoxin was present, but at a concentration below an actionable VDH threshold.
This means there is a no swim advisory issued for the following Lake segment: Upper North Anna Branch- From the upper inundated waters of the North Anna arm, to include the “Sandbar” of the lake and downstream to the Rt. 522 Bridge.
The next sample event is anticipated for on or about the week of July 15 (weather dependent). The status report for those results should be released the following week.
The Status Report is available here (https://www.vdh.virginia.gov/content/uploads/sites/178/2024/06/LA-HAB-Status-Report-6.21.24.pdf) and the media release will be available on the VDH Newsroom here (https://www.vdh.virginia.gov/news/2024-regional-news-releases/.
To submit a HAB report or scum sighting, utilize the online report form located at: https://www.vdh.virginia.gov/waterborne-hazards-control/harmful-algal-bloom-online-report-form/