Masking of DEM in ArcGIS Desktop?

Question

I have a clipped DEM of my study area in ArcGIS Desktop 9.3 which I want to use for SWAT project set-up, but I need to mask it.

How do I go about it?

I'm new to the use of ArcGIS.

I don't want to use the extract by mask option.

Does this Q&A help? gis.stackexchange.com/questions/150103/… It sounds to me like it may be the same as what you are asking. — PolyGeo, Jul 30, 2015 at 7:08

PolyGeo · Accepted Answer · 2015-07-30 08:42:08Z

3

It is unclear why you don't want to use the extract by mask option.

The only other way I know of is to set the mask through the environment settings:

PolyGeo♦

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answered Jul 30, 2015 at 8:36

vpgcloud

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I don't want to use extract by mak because I want the mask to be a little bit bigger than the study area.
– Johnson
Jul 31, 2015 at 7:12
In that case I would first buffer the study area layer and then use the result of that as a mask.
– vpgcloud
Jul 31, 2015 at 10:39

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