I can’t figure out what’s wrong with my data that causes the results to always be NAN for `wyield_mn` and `wyield_vol`. I’ve already removed all the zero values from my rasters and reviewed the biophysical table, but I’m still having this problem. I don’t know wat to do anymore…
email: almdpdro@gmail.com
Hi @Almeida_pdro,
Welcome to the forum and thanks for your question! Offhand, I’d guess that there are NaN values in some input raster(s) or values that should be set to NoData (e.g. 3.4e38) but aren’t, which are then overflowing and becoming NaN. Please check your input rasters for NaN values and reclassify these pixels to the NoData value of your raster.
When posting to the forum, please upload the logfile from the model’s output Workspace (the file with a long name that ends in .txt). In addition, if the above suggestion does not solve your issue, would you be able to share your data? This could help me debug your issue or figure out if there is a bug in InVEST.
Thanks!
I noticed that, in addition to the NaN values, the results generated in the TIF file look very strange. I’ve noticed that high Water Yield values are being assigned to LULC classes associated with non-vegetated areas and urbanized areas.
I can’t upload all my datas because “Sorry, the file you are trying to upload is too big”…
InVEST-annual_water_yield-log-2026-04-17–15_10_08.txt (42.8 KB)
If your results are not what you’re expecting, I would recommend taking a look at the Data Needs section of the User Guide, specifically the biophysical table description, to make sure that your CSV adheres to the requirements. However to your specific concern, conceptually we would expect evapotranspiration to be low/runoff to be high for areas that have impervious surfaces (like urban areas) or sparse vegetation, which would contribute to higher water yield values. Low root depth could also contribute by preventing water from infiltrating the soil so it runs off.
I can’t upload all my datas because “Sorry, the file you are trying to upload is too big”…
If you still have concerns, would you be able to share a google drive link with your data?
Thanks
