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Slope calculations way too high

Question asked by dragontoad on Aug 31, 2010
Latest reply on Aug 31, 2010 by Dan_Patterson
When I run the slope analysis tool, the slopes calculated wind up being way too high... (see pictures) Using "degrees" as the units, almost everything is near 90 degrees slope.  Using "percent" as the unit, almost everything is greater than 100.  (I am using 1 as the z factor)

Using "percent", while the highest overall slopes are still in the right locations, the absolute values are just way too high.  My best guess is that the values got multiplied by 100 one time too many. (i.e. rise/run*100*100)

Using "degrees", in addition to being too high, the highest slopes are also in the wrong locations. (i.e. the steepest areas according to the analysis are the tops of lakes)

Has anyone run into this problem before?

Thanks!
-Nathan

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