Derived from orthorectified Colour Air Photos of Southern Ontario 20cm resolution.
DIGITAL ELEVATION MODEL
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Derived from orthophotos at 20CM resolution
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Note that some layers are free to download. Others must be requested through the Map and Data Library. All roads can be found for public use at this url http://gis.ny.gov/gisdata/inventories/details.cfm?DSID=932
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online repository in the National Spatial Data Clearinghouse program. CUGIR provides geospatial data and metadata for New York State, with special emphasis on those natural features relevant to agriculture, ecology, natural resources, and human-… Read more.
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In support of military applications, the National Imagery and Mapping Agency (NIMA) has developed standard digital datasets (Digital Terrain Elevation Data (DTED) which is a uniform matrix of terrain elevation values which provides basic… Read more.
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The Land Processes DAAC was established as part of NASA's Earth Observing System (EOS) Data and Information System (EOSDIS) initiative to process, archive, and distribute land-related data collected by EOS sensors, thereby promoting the inter-… Read more.
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Canada3D is a digital elevation model (DEM) produced by the Canadian Forestry Service, Ontario region. The DEM consists of an ordered array of ground elevations providing coverage of the entire Canadian landmass. It has been derived from the cells… Read more.