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Urban Flood Risk Mapping with Coupling Storm and Sanitary Analysis Software (ASSA) and HEC-RAS Model, Case Study of Ladan Urban Watercourse, Mashhad, Iran | ||
مجله پژوهش های خشکسالی و تغییراقلیم | ||
مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 14 مهر 1404 | ||
نوع مقاله: مقاله پژوهشی | ||
شناسه دیجیتال (DOI): 10.22077/jdcr.2025.9632.1150 | ||
نویسندگان | ||
ریحانه کشاورز1؛ بهرام ملک محمدی2؛ محمد نیک سخن2؛ کیوان بینا* 3 | ||
1دانشجوی دکتری مهندسی محیط زیست، پردیس بین المللی دانشگاه تهران، کیش | ||
2عضو هیات علمی دانشکده مهندسی محیط زیست دانشگاه تهران | ||
3استادیار گروه عمران دانشگاه خیام | ||
چکیده | ||
This study aimed to perform flood risk mapping of the Ladan watercourse in 9rd District of Mashhad city, Iran, through hydraulic and hydrological modeling. The analysis employed Storm and Sanitary Analysis (ASSA) and HEC-RAS 6.2 software. Rainfall–runoff modeling was based on a uniform rainfall pattern, while hydraulic simulations were conducted for return periods of 25, 50, and 100 years. Flood hazard zoning for the 100-year flood was prepared in accordance with Iranian Guideline for flood hazard mapping (Code 821), in which the product of flow depth and velocity (V×D) was considered as the flood hazard index. The findings revealed that the Ladan watercourse can convey floods with return periods of 25 and 50 years. However, during the 100-year flood, specifically, the initial 200 meters of the channel were identified as critical zones where overtopping and road inundation are likely to occur.The results provide a practical basis for prioritizing vulnerable zones | ||
کلیدواژهها | ||
Risk Mapping؛ Urban Flooding؛ ASSA Software؛ HEC-RAS؛ Rainfall-Runoff | ||
آمار تعداد مشاهده مقاله: 3 |