20 foot contours (2008). This dataset contains locations and attributes of 20-ft interval topography data, created as part of the DC Geographic Information System (DC GIS) for the D.C. Office of the Chief Technology Officer (OCTO) and participating D.C. government agencies. In addition to the 2-ft contour data ancillary datasets containing an ESRI geodatabase of masspoints and breaklines. METADATA CONTENT IS IN PROCESS OF VALIDATION AND SUBJECT TO CHANGE.