Estimación de parámetros de respuestas hidrológicas extremas en microcuencas tributarias del río chico (provincia manabí, ecuador) aplicación del hidrograma unitario instantáneo geomorfoclimático

Abstract

The main purpose of this research is to know the magnitudes of the extreme hydrological responses in the microbasin system tributary to the Chico River by means of the application of the Geomorphoclimatic Instantaneous Unit Hydrograph. The methodology includes the following guidelines: (a) Delimit the microbasin system from a digital elevation model (DEM) of the study area, (b) Calculate the morphometric parameters of the tributary microbasins and drainage networks using a database obtained through the application of specialized software, (c) Estimate the CN curves for each of the microbasins that make up the Chico river drainage system, based on available digital cartographic information on land cover, land use and soil texture, (d) Calculate the hydraulic parameters of the main channel of the tributary microbasins that make up the Chico river drainage network, (e) Analyze the current land use and land cover developed within the surface of the Chico river microwatershed system, (f) Estimate the design rainfall hietograms of the tributary microwatershed system for different return periods, (g) Estimate the peak flood flows of the microbasin system that make up the Chico river drainage networks for different return periods, and (h) Estimate the HUIGC parameters for the different tributary microbasins that make up the Chico river drainage system. Therefore, it is important to evaluate and know the magnitudes of the peak flood flows, as hydrological response parameters that characterize these processes, in order to identify the magnitudes of flood and inundation scenarios that will subsequently allow for the zoning, evaluation and management of the risks associated with the hydrogeomorphological threat due to these processes.