Environmental studies of water resources in the Tandilia region

The work shows the progresses achieved on the environmental studies carried out on the water resource, in hills and foothills sectors of Tandilia region. The main objective was to know in depth the environmental hydrological analysis in the region, based on the research group background studies. The specific objectives were: to analyze the quality, dynamic and management of surface resources; to evaluate the groundwater management in the region, identifying its main limitations and strengths; and the comparative analysis of the groundwater system in the Langueyú and Del Azul basins. The study starts from an integral approach, considering water as a component of the environmental system. For each objective, specific methodologies were applied, including techniques and tools of natural and social sciences. The main results showed the flow and quality variations in the Langueyú stream from its headwaters to downstream, as well as the water and habitat quality at the Chapaleofú recreation area in Rauch. The advances in the Lago del Fuerte hydrological characterization showed the importance of the relation between groundwater and surface water and the affectation by effluent discharges. Regarding to the management of surface water in the Langueyú basin and the recreation zone in Rauch, one of the main problems detected is the low or null participation by the resource’s users. The peri-urban and rural sectors analysis also identified this weakness, and the lack of a systemic approach and a strong institutional policy. Moreover, the comparison of groundwater hydrology in the Langueyú and Del Azul basins shows that the main differences are found in human management. It was concluded that water management has shortcomings in the different work levels analyzed, which have an impact on water resources quality and dynamic.

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