Production of flood risk maps: Ayancık Stream Example

Year 2022, , 14 - 23, 06.07.2022

Elnaz Najatishendi , Emine Müjgan Ergene , Melis Uzar , Füsun Balık Şanlı

https://doi.org/10.53093/mephoj.1123378

Cited By: 1

Abstract

Natural disasters are events that negatively affect human life and cause material and moral damages. As in the rest of the world, one of the biggest natural disasters after earthquakes in our country is floods. The flood event turns into a disaster in cases caused by human interventions such as the change of the river bed, the increase in the construction on the riversides, and the blocking of the river perpendicular to the flow direction. In this study, risk maps for floods with different return intervals (25, 50, 100 years) were produced with GIS for Ayancık stream in Sinop province. As a result, when the flood risk maps were analyzed, the regions located in the floodplain were considered very risky regions. According to the results obtained, the flood disaster reaches a depth of 7 meters. Ayancık Stream and its surroundings are a very risky area exposed to floods as they have a maximum depth of 3.5 m. In addition, flood risk areas with 50 and 100-year return period floods, increase 3.71 and 12.83 percent, respectively, from 25-year return period flood risk areas. In addition, it was concluded that the majority of the areas affected by the floods in all three turning ranges within the scope of the study area are located in the very risky region, while the extreme risk areas are less than the other risky groups.

Keywords

Remote sensing, photogrammetry, Flood, Risk maps

References

• https://www.afad.gov.tr/kurumlar/afad.gov.tr/2419/files/Afet_Mud_Pl_ResmiG_20122013.pdf
• Özalp, D. (2009). Dere Taşkın Risk Haritalarının CBS Kullanılarak Oluşturulması ve CBS İle Taşkın Risk Analizi, Doktora Tezi, Geomatik Mühendisliği, Fen Bilimleri Enstitüsü, İstanbul Teknik Üniversitesi, İstanbul.
• Özdemir, H. (2007). Farklı Senaryolara Göre Taşkın Risk Analizi: Havran Çayı Örneği (Balıkesir). TMMOB Afet Sempozyumu, 5–7 Aralık 2007, Ankara.
• Özcan Ö, Musaoğlu N & Şeker D Z (2009). Taşkın Alanlarının CBS ve Uzaktan Algılama Yardımıyla Belirlenmesi ve Risk Yöntemi: Sakarya Havzası Örneği. TMMOB Harita ve Kadastro Mühendisleri Odası 12. Türkiye Harita Bilimsel ve Teknik Kurultayı, 11 – 15 Mayıs 2009, Ankara.
• Desalegn, H., & Mulu, A. (2021) Mapping flood inundation areas using GIS and HEC-RAS model at Fetam River, Upper Abbay Basin, Ethiopia. Scientific African
• Iosub, M., Minea, I., Hapciuc, O., & Romanescu, Gh. (2015) The Use of Hec-Ras Modelling In Flood Risk Analysis, International Journal On Humanistic Ideology, 315-322
• http://www.ayancik.gov.tr/cografi-yapisi
• Eckert, S., Kellenberger, T., & Itten, K. (2004). Accuracy Assessment of Automatically Derived Digital Elevation Models from Aster Data in Mountainous Terrain: RSL-Remote Sensing Laboratories, Department of Geography, University of Zurich, CH-8057 Zurich, Switzerland.
• Sümer, E. Ö., Gürçay, B., Pekesin, B. F., Avcı, K., Koruyucu, M., Dağlıyar, A., Teoman, A., Topçu, T. and Özgüner, C., 2006. ASTER Uydu Verisi Uygulamaları: Türkiye'den Örnekler. Özel Yayın Serisi-5, Maden Tetkik Arama Genel Müdürlüğü, 70, Ankara. ISBN: 975-8964-41-0.
• Tachikawa, T., Kaku, M., Iwasaki, A., Gesch, D., Oimoen, M., Zhang, Z., Danielson, J., Krieger, T., Curtis, B., Haase, J., Abrams, M., Crippen, R. and Carabajal, C., 2011. ASTER Global Digital Elevation Model Version 2 – Summary of Validation Results. U.S., NASA Land Processes Distributed Active Archive Center 25.
• URL 4: https://asterweb.jpl.nasa.gov/GDEM.asp
• http://maps.elie.ucl.ac.be/CCI/viewer/download.php
• Korkmaz, B., Şen, K., Aksu, H., (2019). Periodic precipitation-intensity and duration analysis for the Central Black Sea, Muğla Sıtkı Koçman University 10th National Hydrology Congress 9-12 October, 2019
• Urban Hydrology for Small Watersheds United StatesDepartment of Agriculture, Natural Resources Conservation Service, Conservation Engineering Division Technical Release 55, June 1986
• Tingsanchali, T., & Karim, M. F. (2005), Flood Hazard and Risk Analysis in the Southwest Region of Bangladesh, Hydrological Processes, 19, 2055-2069