Using ArcGIS Pro, I ran 4 different IDW interpolations (rasters) of rainfall measurements across 26 measurement stations (point features). I'm trying to now aggregate the total amount of precipitation within 3 different river catchment areas (polygon features), but cannot find a way to clip and total the aggregate raster results.

How can I calculate the total amount of precipitation within each polygon feature?

Here is a screenshot of an aggregate sum of one IDW interpolation and the 3 river catchment areas: enter image description here

  • 1
    Try zonal statistics.
    – FelixIP
    Jul 3, 2022 at 20:38

1 Answer 1


Here there is a solution that might fit your problem (check TimothyHales answer): https://community.esri.com/t5/arcgis-spatial-analyst-questions/sum-of-all-pixel-cell-values-of-a-raster-map/td-p/230170

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct.

Not the answer you're looking for? Browse other questions tagged or ask your own question.