Alert Risk Map (ARM) for Northern Snakehead

Northern snakeheads (Channa argus), native to China, Russia, and Korea, was found in a river in King William County, Virginia, on March 20, 2020. The non-native species can survive in poorly oxygenated water and can adapt to a wide range of aquatic environments. USGS Alert Risk Maps (ARMs) display lakes, river reaches, and other water bodies potentially at risk of invasion by a new non-native species, like the northern snakehead