Aquifers are examples of physical systems in which several phenomenologies and non-linear processes are developed, and they are highly difficult to be described.This kind of systems are depicted by attributes like the interactions between physical processes in a wide variety of scales, lithology and porous media anisotropies, heterogeneous patterns of fluid dynamics, and so on.Before this complex scenery, engineers and practitioners constantly should make decisions and to build mechanisms for understanding and use aquifers.The following manuscript shows some ideas about the analysis of complex systems and exhibiting a few fractal tools, highly useful for their applications in geophysics and groundwater systems analysis.