Using a DEM

This map shows contour lines generated from the PASDA 3.2 foot DEM. I used the ArcGIS spatial analyst tool to develop contour lines with a vertical elevation of 20 feet and index contours at 100 feet.

I also made two hillshade maps. The first used the default view with illumination from 315 degrees azimuth. The second was a more realistic 142 degrees illumination. The two different angles make a big difference in the view of the map.

And the second view.

 

 

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