There are negative values in QuickFlow

Hi, I have a problem with running SWY.There are negative values ​​in my QuickFlow raster. I checked these values ​​and they occured on the edge of raster.

I’m not sure what is the source of the negative values.

InVEST-natcap.invest.seasonal_water_yield.seasonal_water_yield-log-2022-10-28–23_40_14.txt (58.4 KB)

Any pointers would be much appreciated.


Hi @YIYI -

Have you checked out this forum post that mentions something similar? @dcdenu4, do you have any updates on that boundary issue? Chen is using InVEST 3.12.0.

~ Stacie

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Could you please share your data? You can upload it here or email to me privately:

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Hi Stacie,
Thanks for your help,your suggestion helped me a lot.DEM and LULC rasters that overlap with negative areas have no values.I guess this is due to inconsistent raster resolution,it’s a problem generated during the raster clipping process.


Hi @esoth ,
I have sent the data to your email, thank you very much for your help.