Model Mode Model mode is used to specify or modify the hydrologic properties for your model. You enter Model mode in one of two ways. First, if you have just established the grid system for your model in Grid mode, select the Go to Model Mode command under the Model menu. Second, if you have already established a grid system for your model, you will enter Model mode when you open your model from Grid mode. Model mode has twelve menus: File Edit Grid View Layers Stress Periods Overlays Zones Model Results Display Mode Help