Lab 6: DEMs in ArcGIS

Shaded Relief Model

Aspect Map

Slope Map

3-D Model

Extent Data:

Top: 34.1966666658 

Bottom: 33.8680555546

Left: -118.634166666

Right: -118.159722222


For this week's assignment I chose to create a DEM on the Los Angeles basin area. I included the Santa Monica Mountains as well as Santa Monica to Pasadena. The DEM was taken from the USGS Seamless Data server using the 1983 North American GCS datum. I chose this region for a variety of reasons. For one, it is relevant to me. I live in the Los Angeles area so I found it interesting to learn more about my city. The maps display flat plane regions with little change in elevation. However, it still possesses mountains which make for more interesting aspect maps and 3D models due to abrupt and large elevation variations.