On July 7, 2023, VDH posted an updated Status Report for the Swimming Advisory on the Blackwater arm of SML. Samples taken on June 26th on the lower Blackwater arm of SML contain safe levels of cyanobacteria and toxins. VDH has lifted the Swimming Advisory for the lower portion of the Blackwater arm to just upstream of the confluence with Gills Creek, at Channel Marker B-16.
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