 However, when in the path of a storm the City of Poquoson is subject to severe flooding due to its very low elevation above sea level.Poquoson was significantly impacted by the most destructive storm of 2003, Hurricane Isabel, which caused the worst flooding the Hampton Roads area had seen since the 1933 Chesapeake–Potomac hurricane 70 years earlier.During Hurricane Isabel, most of the city was under several feet of water due to the storm surge.