Applicability of the swat model for hydrologic simulation in Paraopeba River basin, MG

CERNE

Matheus Fonseca Durães²  Carlos Rogério De Mello¹  Mauro Naghettini¹ 

[1] ,Universidade Federal de Lavras Departamento de Engenharia Laboratório de HidráulicaLavras MG ,Brazil

关键词: Hydrology modeling;    land cover;    basin management;    Modelagem hidrológica;    cobertura vegetal;    manejo de bacias hidrográficas;   

DOI  :  10.1590/S0104-77602011000400006

来源: SciELO

【 摘 要 】

The SWAT model (Soil and Water Assessment Tool) was applied for simulating the hydrologic pattern of Paraopeba river basin, in Minas Gerais state, under different land use and occupation scenarios, looking to support basin management actions. The model parameters were calibrated and validated, with respect to the data observed from 1983 to 2005. The basin was assessed at the 'Porto do Mesquita' gauging station and change in land use and occupation was based on the annual growth scenarios proposed in the partial report of Paraopeba basin's master plan. The model was found to be highly sensitive to baseflow, its main calibration variable. Statistical analyses produced a Nash-Sutcliffe coefficient above 0.75, which is considered good and acceptable. The SWAT model provided satisfactory results in simulating hydrologic pattern under different scenarios of land use change, demonstrating that it can be applied for forecasting discharge in the aforesaid basin. The current land use scenario provided a peak discharge simulation of 1250 m³ s-1, while in years 2019 and 2029 peak discharge simulations were 1190 m³ s-1 and 1230 m³ s-1 respectively. The 2019 scenario provided the best results with respect to baseflow increase and peak discharge reduction.

【 授权许可】

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