Análise da ferramenta de avaliação de água e solo – SWAT+: exemplo da sub-bacia do lago Tana na Etiópia

Abstract

Hydrological models are important tools for assessing river basin water behavior and can also be used in scenario prediction to predict the environmental impact of land use, land management practices and climate change. In this context, the present project aims to demonstrate the applicability of the Soil and Water Assessment Tool (SWAT +) model through a simulation. The simulation was performed by installing the SWAT + and QGIS programs and the QSWAT plugin and by means of the demonstration project files available in the SWAT tool installation folder, following some specific data input parameters such as climate generator and ground data for the SWAT tool and the simulation was performed. Thus we obtained the results in the form of graphs, representing the water outflow from the lake Tana sub basin, Ethiopia. One of the graphs is with the measurements, and the other with the values calculated by the model, demonstrating much similarity and good accuracy in the flow estimates between reality and what the model calculates, within differences justified by the uncertainties of both the model and the measurements. This analysis contributes as a first step to the deployment of the SWAT model.