[GIS] Determining Flow Direction in ArcGIS for Desktop

Question

I have a problem with the Flow Direction tool ArcGIS 10.2.2.
After running the tool on a digital elevation model in .tif format 16 bit unsigned integer.
However the result is an image of 8 bit unsigned integer without flow values. See figure.

Can someone help me?

Answer 1

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I have the same problem, but I solve in this way:

1- Mask the raster 2- Use hydrology/fill 3- use Flow direction

Done!