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Riverscapes / pyBRAT

pyBRAT - Beaver Restoration Assessment Tool (Python)
http://brat.riverscapes.xyz
GNU General Public License v3.0
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multiple watersheds #267

Closed andrewsechrist100 closed 5 years ago

andrewsechrist100 commented 5 years ago

Hi BRAT tam,

I still have questions about using Python tools from the Supporting Tools folder (my previous Issue

submission), but wanted to ask this question as well. I am going to attempt to model South Dakota east of the Missouri River. The total number of watersheds required for this is 23, including fringe watersheds that are shared between states. Is it best to merge and clip data and run the resulting shapefile through the tools or do I need to run all the tools separately for each watershed? Or, is it best to merge but not clip, as this gets rid of huge chunks of some shared watersheds? Thanks and Cheers,

Andy

banderson1618 commented 5 years ago

Because BRAT is calculated on a reach-by-reach basis, it shouldn't make any difference whether you merge the data and run it in one go or run each smaller watershed separately. You might run into memory issues when running HUC 6s and bigger, because we need to make a Zonal Stats table and ArcGIS can only use 4 GBs of RAM, but other than that, do whatever is easiest for you.