Hi,
I am trying to set up a groundwater model. I have DEM data that covers a large area (these are less accurate). In addition, I have more accurate measured ground surface elevation data (in X, Y and Z form) at several locations of interest given the discharge and pumping activities at these locations. There are observed ground water elevations at these locations which are expected to be used in model calibration.
I first used DEM data to establish ground elevation in the entire model domain and then imported the observed data at these locations of interest and interpolated in 2D. P