Can anyone take a look at the workflow I am using, see screenshot of Results and TOC, and explain why I cannot get past the Snap Pour step as explained by esri on the following page...How To: Create a watershed model using the Hydrology toolset
I can create fill, flow direction, flow accumulation layers/shapefiles but I cannot complete the watershed steps because Snap Pour never completes processing.
See attached image.
I don't know the exact reason why the tool failed, but I wanted to suggest some options as these sometimes remedy the issue of raster processing tools not working.
Yes, it will be a pain to move all your data around to do this, but it can be worth it to avoid the aggravation of raster tools that go awry for no apparent reason. Move the data to the C: drive, then process it, then move it back to where it will be stored long-term (and rename as needed).
Chris Donohue, GISP
Another possibility - the Flow Accumulation step often results in an output raster with values for almost every cell. Since the Snap Pour Point process will evaluate every cell that is not null, sometimes it can be worthwhile to create an intermediate raster to use with all cells below a threshold set to NULL to make the Snap Pour Point process faster. To do this, one could use could use the Conditional Tools CON or SETNULL to set all values below a threshold to NULL.
Set Null—Help | ArcGIS for Desktop
Raster Calculator—Help | ArcGIS for Desktop
Chris Donohue, GISP