%0 Journal Article %A Tavanpour, N. %A Aflatooni, M. %A Nazari, N. %T Determination of Sub-Basins Flow Contribution to Total Flood in Khersan River Basin %J Journal of Water and Soil Science %V 20 %N 78 %U http://jstnar.iut.ac.ir/article-1-3437-en.html %R 10.18869/acadpub.jstnar.20.78.77 %D 2017 %K flood potential, geographic information system, Khersan river basin, rainfall-runoff model, %X This research is aimed to determine the contribution of sub-basins flow to total watershed flood in Khersan river basin located in Kohkilooyeh and Boyer Ahmad province. To do this, the rainfall-runoff model HEC-HMS was used to simulate peak runoff values for 11 sub-basins. HEC-HMS input was constructed using GIS. The results suggest that the change in different return periods is accompanied by small change in prioritization of flood-potential of the sub-basins; so that for return periods of 2, 50 and 100 years, the most contributions came from sub-basins 1 through 11, respectively. With respect to area and flow rate, contribution of sub-basins to watershed total flow was different. The effect of area was between 0.31 to 1.03 percent; namely, sub-basin 6 showed the highest rank and basin 7 showed the lowest one. With respect to peak flow rate, the effect of individual exclusion of sub-basins, resulted in contribution between 51.2 to 1004.2 m3/s, that is, sub-basin 6 showed the lowest effect and the sub basin 11 showed the highest contribution. %> http://jstnar.iut.ac.ir/article-1-3437-en.pdf %P 77-88 %& 77 %! %9 Research %L A-10-1-237 %+ 1.بخش مهندسي آب، دانشكده كشاورزي، دانشگاه شيراز %G eng %@ 2476-3594 %[ 2017