Topics include the physics of surface and subsurface circulation; storage of water; the transport of contaminants in watersheds, soils, aquifers, rivers, the ocean, and the atmosphere; and the laws and equations that govern the recharge, flow, storage, and discharge of water in natural environments. Emphasis is given to qualitative analysis and quantitative evaluation methods of the different hydrologic processes with potential applications in surface and groundwater resources engineering. Environmental analysis is also covered. Analytical and numerical procedures to solve the arising equations are presented, along with the most commonly used models to solve water resource problems. Also studied are engineering methods for the sustainable use of water resources; engineering methods for the containment and treatment of surface and groundwater pollution; and the restoration of aquifers.