Location of human phenomena in geographical space in the flood zone (case study of Pardisan region of Qom)

Faraji Mondared, Abolfazl; Roostaei, Shahram; Mokhtari, Davoud

doi:10.22034/hyd.2022.51769.1642

Document Type : کاربردی

Authors

¹ PhD Student of Geomorphology, Faculty of Planning and Environmental Sciences, Tabriz University ,Tabriz, Iran

² Professor of Geomorphology, Faculty of Planning and Environmental Sciences, Tabriz University, Tabriz, Iran

https://doi.org/10.22034/hyd.2022.51769.1642

Abstract

Due to their geomorphological characteristics, alluvial fans are part of the high flood risk area. Placement of human phenomena in flood zones is a factor that intensifies the instability of currents. For this purpose, in this research, we applied the location of human phenomena in the geographical space of Pardisan in the flood zone with an applied-experimental method. To achieve this goal, the HEC-RAS-6 hydraulic model has been used as a working tool. Due to the size of the area, the area was divided into 15 sub-basins. First, the sub-layers of rivers and floodplain network were extracted, then human phenomena in the studied space were extracted and located on the RAS background map. Then the measured data and values were considered and implemented in the model. By locating the phenomena and considering the conditions of the alluvial fan flood, it was determined that the 100-year-old flood in the area of railway and communication lines, stairs in the west of Pardisan, west side of Payamnoor University, upstream of Pardisan town and also agricultural lands, has a high vulnerability rate. In general, despite the newly established Pardisan town, urban design and subsequent study and modification of the route did not match the geographical features of the region and the prospect of instability has prevailed in the geographical space of the area. It is suggested that for the future development of the city, the flood route be improved and monitored upstream to maintain environmental sustainability.

Keywords

Main Subjects

Hydrogeomorphology

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Location of human phenomena in geographical space in the flood zone (case study of Pardisan region of Qom)

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Volume 9, Issue 33 - Serial Number 33January 2023Pages 59-37

Volume 9, Issue 33 - Serial Number 33
January 2023
Pages 59-37