Delimitation and study of hydrographic basins using hydrological models

Las Encadenadas del Oeste basin is located in the southwestern of the Buenos Aires province. It is an endorheic basin and an extremely fragile scenario for its inability to pass large volumes of water. For this reason, it is very important to study and understand the hydrology of its watershed. The aim of this study is to establish the surface runoff direction of the basin using an hydrological model and to identify its watershed. The applied Arc Gis model was "Hydrologic Modeling". The model determines all cells that drain in a particular one. A classification of the sub-basins in larger, medium and active alluvial cones was obtained. Larger basins are permanent major rivers, medium ones are non permanent streams and the alluvial conos were the ones formed at the mouths of major and minor streams.