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Hi, I'm relatively new to the GMS software and have performed a few of the basic tutorials Aquaveo provides. I have XYZ data that provides spatial reference to every observed pressure points/head values. These points are evenly spaced/gridded. I would like to create a MODFLOW simulation with these pressure data. To my understanding, the best way about creating this model would be to generate a raster that stores XYZ and P data (GeoTIFF). Theoretically, I'd like to create a 3D grid that stores these X, Y, Z, and P data. From there I'm going to need to create an IBOUND layer that specifies the head based on the P value. I've successfully performed these simulations in 2D space but am unable to comprehend where to start in the 3D space. See the attached screenshot for an example of a longitudinal cross-section of a 2D simulation. Can someone provide me some insight on how to begin setting up this model? Let me know if there are further things I need to clarify.