The Initial Grid dialog box is used to specify the grid or model area for a new ModelMuse MODFLOW, SUTRA, PHAST, or WellFootprint project either when first starting ModelMuse or by selecting File|New. Its appearance varies slightly depending on whether the user is creating a new MODFLOW model, a new SUTRA model, a new PHAST model or a new Footprint project.

Clicking the Finish button will create a grid with the dimensions and location specified. If the No grid button is clicked instead, a new project will be created without a grid. The grid can be created later using the methods described in Generating Grids.