Topographic Change: City of Philadelphia, Pennsylvania, 1901-2000
USGS - Eastern Earth Surface Processes Team
Data depicts topographic Change in Philadelphia during the last century. Specifically, for the Frankford 7.5-minute quadrangle, which includes the Wissinoming neighborhood, and the Germantown 7.5-minute quadrangle, which includes the Logan and Feltonville neighborhoods. Data is derived from a variety of sources and estimates elevation change based on raster cells.