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Simulation on Runoff of Rivers in Jeju Island Using SWAT Model
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2009
Year
EngineeringHydrologic EngineeringEarth ScienceChunmi RiverCatchment ScaleHydrological ModelingHydrometeorologyRiver Basin ManagementSurface RunoffJeju IslandGeographyHydrologySediment TransportWater BalanceWater ResourcesEnvironmental EngineeringCivil EngineeringSwat ModelWater Resource AssessmentFlood Risk Management
The discharge within the basin in Jeju Island was calculated by using SWAT model, which a Semi-distributed rainfall-runoff model to the important rivers. The basin of Chunmi river of the eastern region of Jeju Island, as the result of correcting as utilizing direct runoff data of 2 surveys, appeared the similar value to the existing basin average runoff rate as 22% of average direct runoff rate for the applied period. The basin of Oaedo river of the northern region showed <TEX>$R^2$</TEX> of 0.93, RMSE of 14.92 and ME of 0.70 as the result of correcting as utilizing runoff data in the occurrence of 7 rainfalls. The basin of Ongpo river of the western region showed <TEX>$R^2$</TEX> of 0.86, RMSE of 0.62 and ME of 0.56 as the result of correcting as utilizing runoff data except for the period of flood in <TEX>$2002{\sim}2003$</TEX>. Yeonoae river of the southern region showed <TEX>$R^2$</TEX> of 0.85, RMSE of 0.99 and ME of 0.83 as the result of correcting as utilizing runoff data of 2003. As the result of calculating runoff for the long term about 4 basins of Jeju Island from the above results, SWAT model wholly appears the excellent results about the long-term daily runoff simulation.