Every five years, since 1990, the Delaware Valley Regional Planning Commission has produced a GIS Land Use layer for its 9-county region. As it was in 2000, digital orthophotography was flown by DVRPC in 2010. Digitizing was done using these 2010 true-color aerials on the ESRI ArcGIS software platform at a 1:2400 (1 inch = 200 feet) scale.