Calculating uphill/downhill areas on a raster map

Discussion created by cs.tx.usa on Jan 17, 2012
Latest reply on Mar 21, 2014 by MBoucher21
Hi folks,
I need to determine uphill or downhill areas along a road section on a raster map. I know MapCal program can do this but it only accepts maps in 100x100 pixels but my study area is too big to run this program (1500 x 1500). I was wondering if there is a way to do this in ArcGIS.

Thanks in advance.