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The current state and the continuous changes that affect the wetlands located in the city of Bogotá (Colombia), motivates the development of instruments and tools that illustrate their hydrological behavior under climatic stresses such as the ENSO phenomenon. This article presents the formulation of a model of the hydrological conditions of the urban wetland of Torca. The simulation was carried out with the Vensim® software and the statistical validation of the model was carried out by means of a multivariate sensitivity analysis (MVSS) using the Montecarlo method. It was evidenced that in the years of occurrence of the ENSO climatological phenomenon (2001) and (2011), the behavior pattern of precipitation and inflow (Qi) of the afferent basin of the wetland were parallel. Hydraulic retention time (THR) suggested an inverse behavior in relation to precipitation. Indeed, the average monthly rainfall was 47,8mm and 158,7mm, and the average THR was 55 days and 33 days for the El Niño and La Niña years, respectively. The inflow and outflow presented a parallel behavior during the study period, probably due to the fact that the body of water became an outlet channel. During El Niño, the wetland overflowed for four months (June, September, October and December), with volumes exceeding 130,645m. During La Niña, the wetland overflowed every month; except for August and September, where volumes of 100.018m and 109.166m were observed, respectively.

Modelación dinámica del comportamiento hidrológico de un humedal urbano bajo condiciones del fenómeno ENSO