Flow Length ??? Understanding Output Raster

Discussion created by jameskelly on Apr 23, 2010
Latest reply on Apr 27, 2011 by MBoucher21
I need the length of the longest flow path within a watershed.  I???ve established the watershed and used the ???Flow Length??? tool with the ???upstream??? option on a Flow Direction grid.  I???m expecting the raster pixel at the outlet point to have a value that matches the length of the longest flow path ??? but that does not appear to be the case.  Can anybody share what I might have done wrong, or what I need to do from here?

Thank You,