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Influence of river cross-section data resolution on flood inundation modeling: Case study of Kashkan river basin in western Iran
, Article Journal of Hydrology ; Volume 584 , 2020 ; Hosseini, S. M ; Ataie Ashtiani, B ; Sharif University of Technology
Elsevier B.V
2020
Abstract
In this study, a coupling of a hydrologic and hydraulic model was utilized to assess the impacts of river geometry data resolution on the flood inundation characteristics in a data-scarce environment. Hydrological modeling incorporates soil conservation service curve-number (SCS-CN) and the geomorphologic based instantaneous unit hydrograph model (GIUH) to compute the direct runoff hydrograph in Kashkan river basin located in western Iran. 1D HEC-Geo-RAS model was used and performed to simulate inundation extent of 100-yr floods (~1800 m3/s) along 40 km reach of Kashkan river with a ground survey of river cross-section (2000 cross-sections, each including 500 data-points). The effect of...