The x-y-z Axis System

For finite-difference models (MODFLOW-2000, MODFLOW-2000 GWT, MODFLOW-96, MOC3D, and MT3DMS), the x-y-z axis system is not explicitly defined by the models. Model Viewer defines the axes as follows:

For the finite-element model SUTRA, Model Viewer uses the same the x, y, and z axis system as that defined in the input data.

Normalized Coordinates