EPA estimates of the Area of Land Close to Sea Level in Delaware
The table below provides EPA's estimated uncertainty range of the area of dry land and nontidal wetlands below particular elevations, in square kilometers, as well as the area of tidal wetlands in the EPA wetlands data set. For the most part, EPA used USGS maps with 5-foot contours with a vertical accuracy of about 75 cm. The uncertainty range considers the accuracy of the elevation data that the EPA study used. For example, Kent County has between 22 and 41 square kilometers of dry land and 10 to 17 square kilometers of nontidal wetlands within one meter above spring high water
The majority of land close to sea level in the nation's first state is wetland rather than dry land. For example, Kent County has approximately 169 square kilometers of tidal wetlands, which is 5 to 10 times the area of dry land potentially inundates by a one-meter rise in sea level. A printer-friendly file with the area of dry land and wetland vulnerable to sea level rise in Delaware is also available.