The process of building the array data file for a groundwater flow model is often the most time-intensive task associated with groundwater modeling projects. PM MODFLOW or Visual MODFLOW allows you to import layer surface data from ASCII (X, Y, Z) text files. GENESIS II is geographical, visualization and graphics free software which offer photorealistic rendering of both imaginative and GIS data. A software allows also efficiently generate 2D surfaces (data matrices) based on isoline map of any parameter (i.e. permeability coefficient, bottom or upper surface of layers, terrain surface and others).