A theoretical model of the hydrodynamic operation of the aquifers in the Leon Valley (Guanajato, Mexico) and characterizations of the deep hydrother mal inflows. Modelizacion del funcionamiento hidrodinamico de los acuiferos del valle de Leon (Guanajuato, Mexico) y caracterizacion de los apartes hidrotermales profundos

Aquifers of Leon river basin (Guanajuato) are a complex flow system, that we assume like confinated as a whole, and its initial mathematical modelling shows a very small recharge and the over-explotation of the systems. Further, this aquifers are contaminated by superficial focus, associated with wastewaters and Cr-VI, and they are affected by deep thermal waters near temperatures of 40 degree centigree, that shows anormal fluorine contents. Multivariate methods make possible the hydrogeochemical characterization of hydrothermal contributions, that can influence to the systems, if the over explotation of the aquifer increase in the future. (Author) 12 refs.