Urbanizing in the natural basin has been increasing flood runoff in the developed areas and downstream areas because of shorten time of concentration and increased peak flow and total runoff due to increasing impervious area and arranging main arteria...
Urbanizing in the natural basin has been increasing flood runoff in the developed areas and downstream areas because of shorten time of concentration and increased peak flow and total runoff due to increasing impervious area and arranging main arterial drainage. To work out countermeasure due to increasing flood runoff precedes the quantitative analysis of flood discharge change before and after development, but it is very difficult for Korea National Housing Corporation(KNHC) not to have made standard and analysis method for it. Therefore, this study provides the method of coping with a civil appeal and drainage designs effectively by presenting the method to analysis quantitatively the change of flood runoff due to land development.