1 AIT Asian Institute of Technology

Flood hazard assessment using hydro-geospatial technique : a case study of River Chenab from Qadirabad to Trimmu in Pakistan

AuthorShoaib, Muhammad Asim
Call NumberAIT Thesis no.WM-16-22
Subject(s)Flood damage prevention--Pakistan--Chenab River

NoteA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Water Engineering and Management
PublisherAsian Institute of Technology
Series StatementThesis ; no. WM-16-22
AbstractFlood is damaging phenomenon that occur repeatedly . It is thus essential to address this natural disaster for future safety and to decrease its effects on people. In this study Chenab River reach from Qadirabad to Trimmu was selected for flood modeling, mapping and hazard assessment for various return period floods (25 , 50, 100 and 200 years). Hydraulic modeling (using HEC - RAS) and flood inundation mapping (using HEC - GeoRAS an extension of ArcGIS) were integrated to know the flood extents and inundation depths in the flood plain. Flood hazard maps were prepared using DEFRA (2006) and ESCAP (1991) guidelines. Input cross - sections to HEC - RAS model were collected from physical survey and extracted from DEM SRTM 30 m resolution . Accuracy of HEC - RAS model was determined by performing calibration an d validation at two gauging stations (Chiniot and Rivaz ). The results of model calibration and validation show high correlation coefficient R of 0.972 and 0.966 and Nash and Sutcliffe Coefficient NSC of 0.850 and 0.877 . Model stability has been observed du ring simulation of flood discharge in the study reach. Results of HEC - RAS model were exported in to ArcGIS to perform flood inundation mapping . Flood extent and depth maps were prepared for floods of various return periods. Hydro - geospatial technique used in the study performs well to evaluate flood hazard and effectiveness of flood control infrastructure in terms of inundation depth and flooded area.
Year2016
Corresponding Series Added EntryAsian Institute of Technology. Thesis ; no. WM-16-22
TypeThesis
SchoolSchool of Engineering and Technology
DepartmentDepartment of Civil and Infrastucture Engineering (DCIE)
Academic Program/FoSWater Engineering and Management (WM)
Chairperson(s)Tawatchai Tingsanchali
Examination Committee(s)Andriyas, Sanyogita;Sutat Weesakul;Shrestha, Sangam
Scholarship Donor(s)Punjab Irrigation Department-World Bank
DegreeThesis (M. Eng.) - Asian Institute of Technology, 2016


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