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CCH GIS Data Dictionary |
DEM (10 meter) Surface - Digital Elevation Model; A representation of a geographic feature that can be measured continuously across some part of the earth's surface . A 10 meter 'DEM' or surface model, is an approximation of a surface, generalized from elevation points spaced regulary every 10 meters. |
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| Coverage Notes References Downloads |
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| NOTES: A DEM (Digital Elevation Model) is a 32 bit IEEE floating point value organized in a one-channel Band Interleaved by Line file (BIL) on a 7.5-minute by 7.5-minute geographic (lat/long) grid. The origin of the post is center center. A color ramped shaded relief affect can be attained by overlaying the elevation model with the hillshade layer and assigning a light-to-dark color ramp. The affect works best with 50% transparency set on the elevation layer. The shaded relief lyr (layer) file with these settings can be downloaded below. |
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| REFERENCES: |
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COVERAGE:   DEM (10 meter) Surface shown semi-transparent over hillshade with light green to dark (higher elevs) Download 10 M Elevation Model File Geodatabase (ArcGIS Desktop 9.2 and above) Download 10 M Elevation Model Layer File Download 10 M Hillshade Layer File Download 10 M Elevation Model and 10 M Hillshade group Shaded Relief Layer File (affects shown above) |
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