ANNAPOLIS, MD – State agriculture officials in Maryland announced plans to conduct black fly population control measures along a section of the Potomac River close to Harpers Ferry, West Virginia.
The Maryland Department of Agriculture will work alongside the Department of Natural Resources to carry out the targeted treatment operation on Tuesday, May 12, 2026, starting at 9:00 a.m.
Officials say the treatment will focus on a specific portion of the Potomac River waterway to address black fly infestations in the region.
