ArcGIS: Raster Analysis

A customer wanted us to conduct an analysis of water run-off in the region. Originally they wanted us to super-impose their sketches on top of the digital cadastre and the contours. But I came up with a better idea. I grabbed the DEM tiles for the geographic extent. Transformed it into a 3D Surface in ArcMap. Then used contrasting colour symbology to display the change in elevation, based on the pixel height value.

Image Image

Legend: Yellow = Higher areas, Purple = Low areas.

Water generally flows from high to low. So now you can clearly see where the water run-off is going. :)

2018, journal