[ENG] In the last times, the city of Abancay (located in Apurímac, a region of southern Peru) has experimented a very fast population growth which has led to do an improper land use by occupying geodynamically unstable areas. These areas are prone to suffer geo-hydrological processes often triggered by extreme rainfalls which generate important personal and economic losses in Abancay and its surrounding villages. Regarding this situation, the Geological, Mining and Metallurgical Institute of Peru, together with the University of Geneva (Switzerland), within the framework of the “National Program of Geological Risks”, chose the micro-basin Mariño River to develop geological, hydrogeological, geophysical and dendrochronological studies in order to evaluate future potential geo-hydrological events in the area. First results show that large part of the Mariño River basin is highly sus...

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