A multi-point calibration method for a single basin system according to the present invention in performing the runoff of GRM (Grid-based Rainfall runoff Model) model,
The process of selecting a calibration target parameters for the point calibration and process to identify whether the user is Selecting the basin to the point correction, obtain the sub-basins of the selected watershed, single basin perceived divide the watershed into a number of sub-basins and , in the case of the divided basins into a plurality of sub-basins set the network information between sub-basins using a lattice-specific flow information with subwatersheds information, and the select the corrected sub-basins for branch correction according to the user's selection, and the parameters of the selected sub-basins to set-up process and, all using the network information between the set basin, the process of setting the range of the target sub-basins can apply watershed parameters and receives return the parameters of the watershed a watershed number as a key value included in the watershed process for updating the existing parameters of the grating to a value entered by the user and performs the runoff using the updated parameters and sub-basins, comprises a process for outputting a simulation result thereof.
The present invention can effectively be applied to the model for the watershed subwatersheds correction, and improves the results of the watershed runoff point by the correction. In addition, the grid-based physical distribution rainfall developed in Korea - various runoff areas, including flood forecast by applying a multi-point calibration process according to the invention the outflow model of GRM was to take advantage of the hands, the distributed model in rainfall - runoff was advanced analysis technology.