2D Flood modeling with the help of GIS: Mersin / Lamas River

Abstract

A flood is a natural disaster that causes damage to the surrounding lands, settlements and living creatures by not fitting the amount of water in the riverbed for various reasons. Flood disasters all over the world and second in terms of loss of life and property in Turkey, located between meteorological disasters in the first place. To reduce the material and moral damages of floods affecting our lives, it is necessary to know the mechanism that turns the flood into a disaster and to take precautions before the flood occurs. In this study, Lamas River Basin, where floods were experienced many times in the past, was chosen as the study area. 2D flood modeling was performed with Geographical Information Systems and HEC-RAS-2D program. As a result of the modeling, flood depth and propagation maps were obtained for different flood return periods (Q50, Ql00 and Q500).