Longest Flow Path ERROR 010088

[HannesZiegler2]

Hi,

I'm having issues running the Longest Flow Path tool in ArcHydro.

Attempting to run the Longest Flow Path tool results in the following warning error message:

"Longest flow path could not be generated for input drainage area OID=1.

ERROR 010088: Invalid input geodataset (Layer, Tin, etc.)."

This message repeats for each drainage area

Any idea what's causing this? I am using sink watersheds as my drainage area and and fdrstradj (stream flow direction adjusted flow direction raster) for input.

Thank you, any help or suggestions are appreciated!

[HannesZiegler2 · Accepted solution]

Ah, the above problem was resolved by the tried and true ArcHydro Troubleshoot method of make sure you are working from the local C: drive and not a network drive and if not, move your project there, close & delete current .mxd, clear %temp% folder, create new blank .mxd to replace deleted, re-set targets, make sure geoprocessing extent is max of all features in dataframe, make sure your dataframe has the correct projected coordinate system set, and turn off background geoprocessing - then try again.