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Slope maps from ArcMap 10.1 and 10.3 are different

Question asked by on May 7, 2018
Latest reply on May 7, 2018 by Dan_Patterson

I was examining a slope map that I created in ArcMap 10.1 approximately a year ago. Calculating the same slope map in ArcMap 10.3 gives me slightly different results. Did something change in the way slope is calculated? I used the same 100m DEM one year ago as I have today. Also, I noticed that the 10.1 slope map opens in a stretched B&W symbology while the 10.3 slope map opens in a classified symbology. Screenshots below show the slightly different results including an increase in the maximum slope value.