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"OpenStreetMap contributors"
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A Digital Raster Graphic (DRG) is a scanned image of a U.S. Geological Survey (USGS) topographic map. An unclipped scanned image includes all marginal information, while a...
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View within SubmissionGathering Resources...The 7.5-minute digital elevation model (DEM) data are digital representations of cartographic information in a raster form. The DEMs consists of an array of elevations for...-
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View within SubmissionGathering Resources...These DEMs consist of an array of elevations for ground positions at regularly spaced 3-meter intervals. They were created from mass points and breaklines collected as part of...-
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View within SubmissionGathering Resources...The National Elevation Dataset (NED) is a new raster product assembled by the U.S. Geological Survey. The NED is a seamless mosaic of best-available elevation data with a...-
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View within SubmissionGathering Resources... -