The area of which I chose to do my digital elevation models was Shasta County in Northern California, right around 42 degrees north of the equator and 124 degrees west of the Prime Meridian. I chose this area because it is very mountainous and would be a good example in showing digital elevation models. In the shaded relief model, the high elevation areas (the mountains) are represented by reds, orange, and yellows and the lower elevations (the valleys and gorges) are represented by light to dark purples. The slope model shows that in the entire map, the slope is more than 88.9, therefore throughout the map there is a steep slope. The aspect model shows all the areas that face a certain way. For example all areas in the map that are facing north are shaded red. The 3D model, my favorite, draws a 3-dimensional picture of the mountains as if we were looking down at it from an angle. The extent of the map in decimal degrees is starting at the top: 42.0016666667; left: -124.001666667; right: -122.998333333; and bottom: 40.99833333. The information downloaded for this map was from the North American Geographic Coordinate System 1983 and the datum is the 1983 North American Datum.
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