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. EPA used 1-meter contour
data provided by the DC Office of Planning. The uncertainty range
considers the accuracy of the elevation data that the
EPA study used. For example, the District has between 1.6 and 3 square kilometers of dry
land within one meter above
spring high water
Like many urban areas, the nations
capital has relatively little wetland. A printer-friendly file with the area of dry land
and wetland vulnerable to sea level rise in Washington, D.C.
is also available.