Artigo Acesso aberto Revisado por pares

Incidence of Natural and Anthropic Aspects in the Floods of Buenos Aires City

2008; Museo Argentino de Ciencias Naturales Bernardino Rivadavia e Instituto Nacional de Investigación de las Ciencias Naturales; Linguagem: Inglês

10.22179/revmacn.10.291

ISSN

1853-0400

Autores

Perla Nabel, Magdalena Caretti, Rodrigo Becerra Serial,

Tópico(s)

Hydrology and Drought Analysis

Resumo

Incidence of Natural and Anthropic Aspects in the Floods of Buenos Aires City. Floods in Buenos Aires city are the region’s most severe environmental problem. They cause economic losses and a strong impact on the population’s daily life. Historical flood city’s data is essential for the development of hydrologic models and for structural and non structural environmental decisions. This paper presents a detailed register of flood events occurred in Buenos Aires city between 1980 and 2005. During this period, 148 events took place, from which 29 were extreme flood events. From the total events a 61.5% was caused by rainfall and a 38.5% by “sudestadas” (strong southeastern winds). Results show that geomorphology and flood frequency records are related: neighborhoods placed over the Estuarine Plain and Flood Plain show the highest values, whereas those placed over the Interfluves and Laterals show the lowest flood frequency values. Information gathered shows that anthropic aspects, as the presence of ‘Villas’ and green spaces, cause biased results related to the sources that register flood events. The need of developing hydraulic models, which should consider the “sudestada” phenomenon, and the importance of regular controls carried on by appropriated organisms which register accurate information, are pointed.

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