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

Question asked by awynn@gsa.state.al.us on Oct 6, 2016
Latest reply on Feb 7, 2017 by awynn@gsa.state.al.us

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

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