The "Hydrologic Cycle" is the continual movement of water between different regions of the globe (atmosphere, hydrosphere, and lithosphere). Hydrogeology is the study of how water behaves in a geological setting based on hydraulic rules. It includes shaft hydraulic, which is drilling for water for various uses and controlling environmental behaviour, depending on the type of drilled material. Both specialties combine regional and local geology knowledge, as well as superficial and subterranean information, to contribute to the most efficient use of groundwater for long-term development.