A new suggestion for torrent and flood management: Bozburun Peninsula (Muğla) example

With the effect of global warming, showers that have increased their impact throughout the world have caused a significant increase in the number of torrent/floods. Rapid and uncontrolled urbanization and the occupation of flood plains by human elements have also paved the way for the potential disaster danger to turn into serious risks. For this reason, it has become more necessary to make rural and urban planning/investments by taking these hazards/risks into consideration. Bozburun Peninsula, located within the borders of Marmaris district, is a rapidly growing important tourism-oriented destination and is constantly on the agenda with torrents and floods. Within the scope of this study, torrent/flood susceptibility was determined on a sub-basin basis in the peninsula using morphometric analyzes and AHP; two-dimensional (2D) flood propagation maps were created according to the possible Q500 flow rate in the basins selected according to sensitivity, current population and exposure to historical floods, and it was revealed which locations should be paid attention to. In this way, an alternative way is proposed for decision makers/experts to prioritize taking precautions. This prioritization is called the "scaling approach". In addition, it was suggested to develop a settlement-based hierarchical management scheme and this proposal was named "Site-Specific Torrent/Flood Management Model (SATAY)". HEC-RAS 6.0 program was used to detect floods and floodplains (removing possible danger/spread) and ArcGIS 10.5 package program was used for all mapping operations. In the next stage, considering the physical-human characteristics of the relevant basins, it has been tried to explain how applicable the current paradigm tools in flood management are for the relevant basin, using geographical observation/field studies, successful examples in the literature and comparative analyses. In the last part of the thesis, SWOT analysis was used to give a general idea to decision makers and experts in the field. As a result, it has been understood that Integrated Flood Management (IFM) applications are significantly usable for many basins in the peninsula. Key Words: Bozburun Peninsula (Marmaris), Torrent and flood management, Integrated Flood Management (IFM), Hydrology, Basin.