GeoMedia Discussions

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Contributor
Posts: 29
Registered: ‎10-15-2018

Watershed Delineation

Can I ask what is the optimal settings in recoding a Downhill Accumulation for Watershed Mapping in real world application.

Highlighted
Frequent Contributor
Posts: 130
Registered: ‎11-10-2015

Re: Watershed Delineation

Hi,

You have not 'optimal' setting for this. You can consider all the cells of your Study Area as part of the hydrological network... The only goal of this Recode operation is to keep the bigger values, and the threshold depends of your local network.

Perhaps you can get more 'logic' results by using the hotspot detection command and not the recode one. The hotspot detection allows you to define a threshold which is proportional to the average value of all the cells

Regards