How to prepare Channel mask raster while Process GEOGRID file

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Xiao Zhang

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Apr 25, 2024, 12:19:02 AMApr 25
to wrf-hydro_users
Hi all,
Does anyone know how to prepare Channel mask raster while Process GEOGRID file?
I tried to find an example of this file, but could find nothing. I have no clue on this.
I would be grateful if you could help me out. Thanks in advance!

Xiao

Kevin

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Apr 25, 2024, 10:56:04 AMApr 25
to wrf-hydro_users, Xiao Zhang
Xiao,

This is a newer parameter that was recently added to the WRF-Hydro GIS Pre-processing tool and is not required. You can use a 'mask raster' consisting of values 1 and NoData which exactly matches your routing grid. This raster will be used to mask channel cells such that the routing stack will only have channels (and derivative grids) within the area defined with values of "1". This could be useful if you want to exclude channel routing outside of a basin of interest. It will not result in very different computation time.

Thanks,

Kevin

Xiao Zhang

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Apr 26, 2024, 2:47:03 AMApr 26
to wrf-hydro_users, Kevin, Xiao Zhang
Hi, Kevin
Thanks for your reply. I will try.

Xiao

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May 19, 2024, 6:45:05 AMMay 19
to wrf-hydro_users, Xiao Zhang, Kevin
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Donkiss Zidane

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May 19, 2024, 6:45:41 AMMay 19
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