نوع مقاله : مقاله پژوهشی
عنوان مقاله English
نویسندگان English
One method of decreasing loss resulted from flooding is to determine flood productive regions and applying appropriate methods to control flooding. In this study, by using HEC-HMS model accompanied by GIS technology the contribution rate of different sub-basins located upstream of Chamchit hydrometry station in Dalaki basin based on 2,50 and 100 years return period is determined.In this research upper sub-basins of Chamchit hydrometry station ranked due to flooding using Single Successive Subwatershed Elimination method in HEC-HMS environment. Results of this study showed that sub-basin contribution rate in whole output not only affected by area and peak discharge of sub-basin but also factors like location of sub-basin, distance from output, CN, and Flood Routing role in main river have significant impact on the portion of sub-basin in production of the whole basin flood (sub-basin flooding). Except above mentioned, it was found that there is no significant change in sub-basin flooding priority in different return periods.
کلیدواژهها English
