using the Flow Length tool in Spatial Analyst's Hydrology Toolbox to find the Longest Flow Path

[AnneWynn]

How do you find the longest flow path with the Flow Length tool in Spatial Analyst's Hydrology Toolbox?  In the ArcGIS Help, it states  "A primary use of the Flow Length tool is to calculate the length of the longest flow path within a given basin". 

How?  I know that Arc Hydro has a tool that does this, and I have used it before - but I was wondering if it is possible to find the longest flow path with the output from the Flow Length tool without using the ArcHydro tool.

Thanks for any insight you can provide!

A. Wynn

[LukeSturtevant]

This looks great Thomas thanks. I'm not sure if the download link is working for other people, but it is downloading an empty zip file for me for some reason.

[ThomasDilts]

Hi Luke. Thanks for pointing that out.  I've updated the zip file so that it is no longer empty.