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You searched for: Author U.S. Geological Survey Remove constraint Author: U.S. Geological Survey Subject Elevation Remove constraint Subject: Elevation Collection Pennsylvania Spatial Data Access (PASDA) Remove constraint Collection: Pennsylvania Spatial Data Access (PASDA) Place District Of Columbia, United States Remove constraint Place: District Of Columbia, United States
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1. 1:24,000 - 7.5 minute digital elevation models (DEM) for the District of Columbia (30 meter)

2000. U.S. Geological Survey. Digital Elevation Model (DEM) is the terminology adopted by the USGS to describe terrain elevation data sets in a digital raster form. The standard...