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Splitting DEM based on elevation using ArcMap?

Geographic Information Systems Asked by zcfaejl on January 6, 2021

I am trying to split a DEM TIFF file into three separate shapefiles (upland, middle and lowland) on ArcMap 10.6. I have used natural breaks to classify the DEM into three elevation categories.

How do I use this and split it further into different rasters which I can then create shapefiles from?

One Answer

You don't need to split the raster at all. There are a couple ways to do it. One is to use two tools in succession:

  1. Use Reclassify to convert the elevation values in your raster. Use the natural breaks you've already found as the bins to reclassify your raster to just 3 values: 1 (lowland), 2 (middle) and 3 (upland).

  2. Use Raster to Polygon to convert your reclassified raster to polygonal shapes. Use the field containing the 1-3 values as the Raster Field.

Answered by Dan C on January 6, 2021

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