CREATING THE SAMPLE FLOOD RISK MODEL AND FLOOD RISK ANALYSIS OF RIVERS IN UNYE
ÖRNEK TAŞKIN RİSK MODELİ OLUŞTURULMASI VE ÜNYE ŞEHRİNDEKİ DERELERE AİT TAŞKIN RİSK ANALİZLERİ

Author : Fatih OCAK -Muhammet BAHADIR
Number of pages : 499-524

Abstract

As in many other countries of the world, the flood incidents which have been increasing in our country especially in the last 15-20 years cause loss of both life and property. In recent years, natural disasters, whose effects are more felt, are the physical factors such as climate, geomorphological features, vegetation and so on. Although it is closely related with the increasing population, unplanned urbanization, the economic and human activities in the river basins are also directly related. It is possible to say that especially disasters of meteorological origin such as floods have more destructive effects with changing climate conditions and these disasters occur more frequently. In our country, floods that occur after sudden rains especially in the Black Sea coastal belt adversely affect coastal cities. Considering such situations and considering that most of the floods occur in our country in the Black Sea Region, it has become a necessity to carry out flood risk analysis and to share the results with the relevant units. In this study, flood risk analysis of six (6) basins within the borders of Ünye district were carried out by using Geographical Information Systems techniques. Again, a flood model was created for flood risk analysis and it was provided to identify the areas that could pose risks in case of a flood. Thus, a model that focuses on what can be done before, during and after a disaster has been developed. In this study in which flood risk analysis is performed, Analytical Hierarchy Method (AHP) which is a method of Multi Criteria Decision Making method which consists of seven (7) parameters including slope, aspect, soil, land use, geology, precipitation and height is used for determination of flood risk groups. With these data, field studies were conducted to take into account the components in the natural environment without being connected to the computer, observations were made on site, sample positional points were selected and controlled classification was made. Thus, the findings obtained through field studies were processed with information technologies, an important tool for geography studies. As a result, an integrated flood early warning system model is targeted.

Keywords

Natural Disaster, Flood Risk Analysis, GIS (Geographic Information Systems), AHP (Analytical Hierarchy Method), Unye

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