Summary This research is focused on analyzing the underground water resource, from shallow aquifers to deep ones in Colombia's richest water zone. In this geographical area, important surface and underground water resources converge, as well as important hydrocarbon reserves in conventional fields, and unconventional resources. The sustainable development of hydrocarbons requires solving different questions, among the most important of which are knowing which water resource will be used for its development, or where the disposal of the effluents will take place. Within the scope of this study, these responses were included. The area implementation is the most important hydrocarbon basin in Colombia, where more than 20 Billion barrels of oil to exploit converge. In order to have complete information on the water resource, the fundamental tools for its recognition were the generation of a hydrogeological model, with the statigraphic characterization to be able to count on the extension, composition and behavior of water units that can be contributors of this resource or storage.