Precipitaciones extremas y excesos hídricos durante 2014 en la cuenca del arroyo Cura Malal Grande (Argentina)

The occurrence of water excess events generates significant impacts on environmental, social, and economic dynamics, especially in lowland areas. Accordingly, the objective of this research was to analyze the occurrence of extreme precipitation events and their relationship with water excess events that occurred in 2014 in the Cura Malal Grande basin. The events were identified through the analysis of daily precipitation percentiles, complemented by soil moisture data from the GRACE mission, and the mNDWI index was applied to Landsat 8 images to identify flooded areas. Additionally, articles from regional and local press were reviewed to understand the social and economic repercussions of flooding in the basin. The results highlight that the progressive saturation of the soil increased flooding, with the October events being the most significant due to water accumulation in a context of prior humidity. It is evident that the interaction between extreme precipitation and antecedent hydrological conditions defines the dynamics of flooding in lowland basins, providing relevant tools for water resource management.